diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/spi/Makefile | 15 | ||||
| -rw-r--r-- | drivers/mtd/spi/atmel.c | 544 | ||||
| -rw-r--r-- | drivers/mtd/spi/eon.c | 60 | ||||
| -rw-r--r-- | drivers/mtd/spi/gigadevice.c | 65 | ||||
| -rw-r--r-- | drivers/mtd/spi/macronix.c | 98 | ||||
| -rw-r--r-- | drivers/mtd/spi/ramtron.c | 122 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf.c | 54 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_internal.h (renamed from drivers/mtd/spi/spi_flash_internal.h) | 140 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_ops.c | 405 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_probe.c | 363 | ||||
| -rw-r--r-- | drivers/mtd/spi/spansion.c | 141 | ||||
| -rw-r--r-- | drivers/mtd/spi/spi_flash.c | 615 | ||||
| -rw-r--r-- | drivers/mtd/spi/sst.c | 238 | ||||
| -rw-r--r-- | drivers/mtd/spi/stmicro.c | 202 | ||||
| -rw-r--r-- | drivers/mtd/spi/winbond.c | 141 | ||||
| -rw-r--r-- | drivers/spi/Makefile | 1 | ||||
| -rw-r--r-- | drivers/spi/exynos_spi.c | 107 | ||||
| -rw-r--r-- | drivers/spi/ti_qspi.c | 311 |
18 files changed, 1417 insertions, 2205 deletions
diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile index 191138a..86ffc59 100644 --- a/drivers/mtd/spi/Makefile +++ b/drivers/mtd/spi/Makefile @@ -14,16 +14,11 @@ COBJS-$(CONFIG_SPL_SPI_LOAD) += spi_spl_load.o COBJS-$(CONFIG_SPL_SPI_BOOT) += fsl_espi_spl.o endif -COBJS-$(CONFIG_SPI_FLASH) += spi_flash.o -COBJS-$(CONFIG_SPI_FLASH_ATMEL) += atmel.o -COBJS-$(CONFIG_SPI_FLASH_EON) += eon.o -COBJS-$(CONFIG_SPI_FLASH_GIGADEVICE) += gigadevice.o -COBJS-$(CONFIG_SPI_FLASH_MACRONIX) += macronix.o -COBJS-$(CONFIG_SPI_FLASH_SPANSION) += spansion.o -COBJS-$(CONFIG_SPI_FLASH_SST) += sst.o -COBJS-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.o -COBJS-$(CONFIG_SPI_FLASH_WINBOND) += winbond.o -COBJS-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.o +ifdef CONFIG_CMD_SF +COBJS-y += sf.o +endif +COBJS-$(CONFIG_SPI_FLASH) += sf_probe.o sf_ops.o +COBJS-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.o COBJS-$(CONFIG_SPI_M95XXX) += eeprom_m95xxx.o COBJS := $(COBJS-y) diff --git a/drivers/mtd/spi/atmel.c b/drivers/mtd/spi/atmel.c deleted file mode 100644 index f34df43..0000000 --- a/drivers/mtd/spi/atmel.c +++ /dev/null @@ -1,544 +0,0 @@ -/* - * Atmel SPI DataFlash support - * - * Copyright (C) 2008 Atmel Corporation - * Licensed under the GPL-2 or later. - */ - -#include <common.h> -#include <malloc.h> -#include <spi_flash.h> - -#include "spi_flash_internal.h" - -/* AT45-specific commands */ -#define CMD_AT45_READ_STATUS 0xd7 -#define CMD_AT45_ERASE_PAGE 0x81 -#define CMD_AT45_LOAD_PROG_BUF1 0x82 -#define CMD_AT45_LOAD_BUF1 0x84 -#define CMD_AT45_LOAD_PROG_BUF2 0x85 -#define CMD_AT45_LOAD_BUF2 0x87 -#define CMD_AT45_PROG_BUF1 0x88 -#define CMD_AT45_PROG_BUF2 0x89 - -/* AT45 status register bits */ -#define AT45_STATUS_P2_PAGE_SIZE (1 << 0) -#define AT45_STATUS_READY (1 << 7) - -/* DataFlash family IDs, as obtained from the second idcode byte */ -#define DF_FAMILY_AT26F 0 -#define DF_FAMILY_AT45 1 -#define DF_FAMILY_AT26DF 2 /* AT25DF and AT26DF */ - -struct atmel_spi_flash_params { - u8 idcode1; - /* Log2 of page size in power-of-two mode */ - u8 l2_page_size; - u8 pages_per_block; - u8 blocks_per_sector; - u8 nr_sectors; - const char *name; -}; - -/* spi_flash needs to be first so upper layers can free() it */ -struct atmel_spi_flash { - struct spi_flash flash; - const struct atmel_spi_flash_params *params; -}; - -static inline struct atmel_spi_flash * -to_atmel_spi_flash(struct spi_flash *flash) -{ - return container_of(flash, struct atmel_spi_flash, flash); -} - -static const struct atmel_spi_flash_params atmel_spi_flash_table[] = { - { - .idcode1 = 0x22, - .l2_page_size = 8, - .pages_per_block = 8, - .blocks_per_sector = 16, - .nr_sectors = 4, - .name = "AT45DB011D", - }, - { - .idcode1 = 0x23, - .l2_page_size = 8, - .pages_per_block = 8, - .blocks_per_sector = 16, - .nr_sectors = 8, - .name = "AT45DB021D", - }, - { - .idcode1 = 0x24, - .l2_page_size = 8, - .pages_per_block = 8, - .blocks_per_sector = 32, - .nr_sectors = 8, - .name = "AT45DB041D", - }, - { - .idcode1 = 0x25, - .l2_page_size = 8, - .pages_per_block = 8, - .blocks_per_sector = 32, - .nr_sectors = 16, - .name = "AT45DB081D", - }, - { - .idcode1 = 0x26, - .l2_page_size = 9, - .pages_per_block = 8, - .blocks_per_sector = 32, - .nr_sectors = 16, - .name = "AT45DB161D", - }, - { - .idcode1 = 0x27, - .l2_page_size = 9, - .pages_per_block = 8, - .blocks_per_sector = 64, - .nr_sectors = 64, - .name = "AT45DB321D", - }, - { - .idcode1 = 0x28, - .l2_page_size = 10, - .pages_per_block = 8, - .blocks_per_sector = 32, - .nr_sectors = 32, - .name = "AT45DB642D", - }, - { - .idcode1 = 0x47, - .l2_page_size = 8, - .pages_per_block = 16, - .blocks_per_sector = 16, - .nr_sectors = 64, - .name = "AT25DF321", - }, -}; - -static int at45_wait_ready(struct spi_flash *flash, unsigned long timeout) -{ - struct spi_slave *spi = flash->spi; - unsigned long timebase; - int ret; - u8 cmd = CMD_AT45_READ_STATUS; - u8 status; - - timebase = get_timer(0); - - ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN); - if (ret) - return -1; - - do { - ret = spi_xfer(spi, 8, NULL, &status, 0); - if (ret) - return -1; - - if (status & AT45_STATUS_READY) - break; - } while (get_timer(timebase) < timeout); - - /* Deactivate CS */ - spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END); - - if (status & AT45_STATUS_READY) - return 0; - - /* Timed out */ - return -1; -} - -/* - * Assemble the address part of a command for AT45 devices in - * non-power-of-two page size mode. - */ -static void at45_build_address(struct atmel_spi_flash *asf, u8 *cmd, u32 offset) -{ - unsigned long page_addr; - unsigned long byte_addr; - unsigned long page_size; - unsigned int page_shift; - - /* - * The "extra" space per page is the power-of-two page size - * divided by 32. - */ - page_shift = asf->params->l2_page_size; - page_size = (1 << page_shift) + (1 << (page_shift - 5)); - page_shift++; - page_addr = offset / page_size; - byte_addr = offset % page_size; - - cmd[0] = page_addr >> (16 - page_shift); - cmd[1] = page_addr << (page_shift - 8) | (byte_addr >> 8); - cmd[2] = byte_addr; -} - -static int dataflash_read_fast_at45(struct spi_flash *flash, - u32 offset, size_t len, void *buf) -{ - struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); - u8 cmd[5]; - - cmd[0] = CMD_READ_ARRAY_FAST; - at45_build_address(asf, cmd + 1, offset); - cmd[4] = 0x00; - - return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); -} - -/* - * TODO: the two write funcs (_p2/_at45) should get unified ... - */ -static int dataflash_write_p2(struct spi_flash *flash, - u32 offset, size_t len, const void *buf) -{ - struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); - unsigned long page_size; - u32 addr = offset; - size_t chunk_len; - size_t actual; - int ret; - u8 cmd[4]; - - /* - * TODO: This function currently uses only page buffer #1. We can - * speed this up by using both buffers and loading one buffer while - * the other is being programmed into main memory. - */ - - page_size = (1 << asf->params->l2_page_size); - - ret = spi_claim_bus(flash->spi); - if (ret) { - debug("SF: Unable to claim SPI bus\n"); - return ret; - } - - for (actual = 0; actual < len; actual += chunk_len) { - chunk_len = min(len - actual, page_size - (addr % page_size)); - - /* Use the same address bits for both commands */ - cmd[0] = CMD_AT45_LOAD_BUF1; - cmd[1] = addr >> 16; - cmd[2] = addr >> 8; - cmd[3] = addr; - - ret = spi_flash_cmd_write(flash->spi, cmd, 4, - buf + actual, chunk_len); - if (ret < 0) { - debug("SF: Loading AT45 buffer failed\n"); - goto out; - } - - cmd[0] = CMD_AT45_PROG_BUF1; - ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); - if (ret < 0) { - debug("SF: AT45 page programming failed\n"); - goto out; - } - - ret = at45_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); - if (ret < 0) { - debug("SF: AT45 page programming timed out\n"); - goto out; - } - - addr += chunk_len; - } - - debug("SF: AT45: Successfully programmed %zu bytes @ 0x%x\n", - len, offset); - ret = 0; - -out: - spi_release_bus(flash->spi); - return ret; -} - -static int dataflash_write_at45(struct spi_flash *flash, - u32 offset, size_t len, const void *buf) -{ - struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); - unsigned long page_addr; - unsigned long byte_addr; - unsigned long page_size; - unsigned int page_shift; - size_t chunk_len; - size_t actual; - int ret; - u8 cmd[4]; - - /* - * TODO: This function currently uses only page buffer #1. We can - * speed this up by using both buffers and loading one buffer while - * the other is being programmed into main memory. - */ - - page_shift = asf->params->l2_page_size; - page_size = (1 << page_shift) + (1 << (page_shift - 5)); - page_shift++; - page_addr = offset / page_size; - byte_addr = offset % page_size; - - ret = spi_claim_bus(flash->spi); - if (ret) { - debug("SF: Unable to claim SPI bus\n"); - return ret; - } - - for (actual = 0; actual < len; actual += chunk_len) { - chunk_len = min(len - actual, page_size - byte_addr); - - /* Use the same address bits for both commands */ - cmd[0] = CMD_AT45_LOAD_BUF1; - cmd[1] = page_addr >> (16 - page_shift); - cmd[2] = page_addr << (page_shift - 8) | (byte_addr >> 8); - cmd[3] = byte_addr; - - ret = spi_flash_cmd_write(flash->spi, cmd, 4, - buf + actual, chunk_len); - if (ret < 0) { - debug("SF: Loading AT45 buffer failed\n"); - goto out; - } - - cmd[0] = CMD_AT45_PROG_BUF1; - ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); - if (ret < 0) { - debug("SF: AT45 page programming failed\n"); - goto out; - } - - ret = at45_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); - if (ret < 0) { - debug("SF: AT45 page programming timed out\n"); - goto out; - } - - page_addr++; - byte_addr = 0; - } - - debug("SF: AT45: Successfully programmed %zu bytes @ 0x%x\n", - len, offset); - ret = 0; - -out: - spi_release_bus(flash->spi); - return ret; -} - -/* - * TODO: the two erase funcs (_p2/_at45) should get unified ... - */ -static int dataflash_erase_p2(struct spi_flash *flash, u32 offset, size_t len) -{ - struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); - unsigned long page_size; - - size_t actual; - int ret; - u8 cmd[4]; - - /* - * TODO: This function currently uses page erase only. We can - * probably speed things up by using block and/or sector erase - * when possible. - */ - - page_size = (1 << asf->params->l2_page_size); - - if (offset % page_size || len % page_size) { - debug("SF: Erase offset/length not multiple of page size\n"); - return -1; - } - - cmd[0] = CMD_AT45_ERASE_PAGE; - cmd[3] = 0x00; - - ret = spi_claim_bus(flash->spi); - if (ret) { - debug("SF: Unable to claim SPI bus\n"); - return ret; - } - - for (actual = 0; actual < len; actual += page_size) { - cmd[1] = offset >> 16; - cmd[2] = offset >> 8; - - ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); - if (ret < 0) { - debug("SF: AT45 page erase failed\n"); - goto out; - } - - ret = at45_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); - if (ret < 0) { - debug("SF: AT45 page erase timed out\n"); - goto out; - } - - offset += page_size; - } - - debug("SF: AT45: Successfully erased %zu bytes @ 0x%x\n", - len, offset); - ret = 0; - -out: - spi_release_bus(flash->spi); - return ret; -} - -static int dataflash_erase_at45(struct spi_flash *flash, u32 offset, size_t len) -{ - struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); - unsigned long page_addr; - unsigned long page_size; - unsigned int page_shift; - size_t actual; - int ret; - u8 cmd[4]; - - /* - * TODO: This function currently uses page erase only. We can - * probably speed things up by using block and/or sector erase - * when possible. - */ - - page_shift = asf->params->l2_page_size; - page_size = (1 << page_shift) + (1 << (page_shift - 5)); - page_shift++; - page_addr = offset / page_size; - - if (offset % page_size || len % page_size) { - debug("SF: Erase offset/length not multiple of page size\n"); - return -1; - } - - cmd[0] = CMD_AT45_ERASE_PAGE; - cmd[3] = 0x00; - - ret = spi_claim_bus(flash->spi); - if (ret) { - debug("SF: Unable to claim SPI bus\n"); - return ret; - } - - for (actual = 0; actual < len; actual += page_size) { - cmd[1] = page_addr >> (16 - page_shift); - cmd[2] = page_addr << (page_shift - 8); - - ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); - if (ret < 0) { - debug("SF: AT45 page erase failed\n"); - goto out; - } - - ret = at45_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); - if (ret < 0) { - debug("SF: AT45 page erase timed out\n"); - goto out; - } - - page_addr++; - } - - debug("SF: AT45: Successfully erased %zu bytes @ 0x%x\n", - len, offset); - ret = 0; - -out: - spi_release_bus(flash->spi); - return ret; -} - -struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode) -{ - const struct atmel_spi_flash_params *params; - unsigned page_size; - unsigned int family; - struct atmel_spi_flash *asf; - unsigned int i; - int ret; - u8 status; - - for (i = 0; i < ARRAY_SIZE(atmel_spi_flash_table); i++) { - params = &atmel_spi_flash_table[i]; - if (params->idcode1 == idcode[1]) - break; - } - - if (i == ARRAY_SIZE(atmel_spi_flash_table)) { - debug("SF: Unsupported DataFlash ID %02x\n", - idcode[1]); - return NULL; - } - - asf = spi_flash_alloc(struct atmel_spi_flash, spi, params->name); - if (!asf) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - - asf->params = params; - - /* Assuming power-of-two page size initially. */ - page_size = 1 << params->l2_page_size; - - family = idcode[1] >> 5; - - switch (family) { - case DF_FAMILY_AT45: - /* - * AT45 chips have configurable page size. The status - * register indicates which configuration is active. - */ - ret = spi_flash_cmd(spi, CMD_AT45_READ_STATUS, &status, 1); - if (ret) - goto err; - - debug("SF: AT45 status register: %02x\n", status); - - if (!(status & AT45_STATUS_P2_PAGE_SIZE)) { - asf->flash.read = dataflash_read_fast_at45; - asf->flash.write = dataflash_write_at45; - asf->flash.erase = dataflash_erase_at45; - page_size += 1 << (params->l2_page_size - 5); - } else { - asf->flash.write = dataflash_write_p2; - asf->flash.erase = dataflash_erase_p2; - } - - asf->flash.page_size = page_size; - asf->flash.sector_size = page_size; - break; - - case DF_FAMILY_AT26F: - case DF_FAMILY_AT26DF: - asf->flash.page_size = page_size; - asf->flash.sector_size = 4096; - /* clear SPRL# bit for locked flash */ - spi_flash_cmd_write_status(&asf->flash, 0); - break; - - default: - debug("SF: Unsupported DataFlash family %u\n", family); - goto err; - } - - asf->flash.size = page_size * params->pages_per_block - * params->blocks_per_sector - * params->nr_sectors; - - return &asf->flash; - -err: - free(asf); - return NULL; -} diff --git a/drivers/mtd/spi/eon.c b/drivers/mtd/spi/eon.c deleted file mode 100644 index 25cfc12..0000000 --- a/drivers/mtd/spi/eon.c +++ /dev/null @@ -1,60 +0,0 @@ -/* - * (C) Copyright 2010, ucRobotics Inc. - * Author: Chong Huang <chuang@ucrobotics.com> - * Licensed under the GPL-2 or later. - */ - -#include <common.h> -#include <malloc.h> -#include <spi_flash.h> - -#include "spi_flash_internal.h" - -struct eon_spi_flash_params { - u8 idcode1; - u16 nr_sectors; - const char *name; -}; - -static const struct eon_spi_flash_params eon_spi_flash_table[] = { - { - .idcode1 = 0x16, - .nr_sectors = 1024, - .name = "EN25Q32B", - }, - { - .idcode1 = 0x18, - .nr_sectors = 4096, - .name = "EN25Q128", - }, -}; - -struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode) -{ - const struct eon_spi_flash_params *params; - struct spi_flash *flash; - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(eon_spi_flash_table); ++i) { - params = &eon_spi_flash_table[i]; - if (params->idcode1 == idcode[2]) - break; - } - - if (i == ARRAY_SIZE(eon_spi_flash_table)) { - debug("SF: Unsupported EON ID %02x\n", idcode[1]); - return NULL; - } - - flash = spi_flash_alloc_base(spi, params->name); - if (!flash) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - - flash->page_size = 256; - flash->sector_size = 256 * 16 * 16; - flash->size = 256 * 16 * params->nr_sectors; - - return flash; -} diff --git a/drivers/mtd/spi/gigadevice.c b/drivers/mtd/spi/gigadevice.c deleted file mode 100644 index b42581a..0000000 --- a/drivers/mtd/spi/gigadevice.c +++ /dev/null @@ -1,65 +0,0 @@ -/* - * Gigadevice SPI flash driver - * Copyright 2013, Samsung Electronics Co., Ltd. - * Author: Banajit Goswami <banajit.g@samsung.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <malloc.h> -#include <spi_flash.h> - -#include "spi_flash_internal.h" - -struct gigadevice_spi_flash_params { - uint16_t id; - uint16_t nr_blocks; - const char *name; -}; - -static const struct gigadevice_spi_flash_params gigadevice_spi_flash_table[] = { - { - .id = 0x6016, - .nr_blocks = 64, - .name = "GD25LQ", - }, - { - .id = 0x4017, - .nr_blocks = 128, - .name = "GD25Q64B", - }, -}; - -struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, u8 *idcode) -{ - const struct gigadevice_spi_flash_params *params; - struct spi_flash *flash; - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(gigadevice_spi_flash_table); i++) { - params = &gigadevice_spi_flash_table[i]; - if (params->id == ((idcode[1] << 8) | idcode[2])) - break; - } - - if (i == ARRAY_SIZE(gigadevice_spi_flash_table)) { - debug("SF: Unsupported Gigadevice ID %02x%02x\n", - idcode[1], idcode[2]); - return NULL; - } - - flash = spi_flash_alloc_base(spi, params->name); - if (!flash) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - /* page_size */ - flash->page_size = 256; - /* sector_size = page_size * pages_per_sector */ - flash->sector_size = flash->page_size * 16; - /* size = sector_size * sector_per_block * number of blocks */ - flash->size = flash->sector_size * 16 * params->nr_blocks; - - return flash; -} diff --git a/drivers/mtd/spi/macronix.c b/drivers/mtd/spi/macronix.c deleted file mode 100644 index 70435eb..0000000 --- a/drivers/mtd/spi/macronix.c +++ /dev/null @@ -1,98 +0,0 @@ -/* - * Copyright 2009(C) Marvell International Ltd. and its affiliates - * Prafulla Wadaskar <prafulla@marvell.com> - * - * Based on drivers/mtd/spi/stmicro.c - * - * Copyright 2008, Network Appliance Inc. - * Jason McMullan <mcmullan@netapp.com> - * - * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. - * TsiChung Liew (Tsi-Chung.Liew@freescale.com) - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <malloc.h> -#include <spi_flash.h> - -#include "spi_flash_internal.h" - -struct macronix_spi_flash_params { - u16 idcode; - u16 nr_blocks; - const char *name; -}; - -static const struct macronix_spi_flash_params macronix_spi_flash_table[] = { - { - .idcode = 0x2013, - .nr_blocks = 8, - .name = "MX25L4005", - }, - { - .idcode = 0x2014, - .nr_blocks = 16, - .name = "MX25L8005", - }, - { - .idcode = 0x2015, - .nr_blocks = 32, - .name = "MX25L1605D", - }, - { - .idcode = 0x2016, - .nr_blocks = 64, - .name = "MX25L3205D", - }, - { - .idcode = 0x2017, - .nr_blocks = 128, - .name = "MX25L6405D", - }, - { - .idcode = 0x2018, - .nr_blocks = 256, - .name = "MX25L12805D", - }, - { - .idcode = 0x2618, - .nr_blocks = 256, - .name = "MX25L12855E", - }, -}; - -struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode) -{ - const struct macronix_spi_flash_params *params; - struct spi_flash *flash; - unsigned int i; - u16 id = idcode[2] | idcode[1] << 8; - - for (i = 0; i < ARRAY_SIZE(macronix_spi_flash_table); i++) { - params = ¯onix_spi_flash_table[i]; - if (params->idcode == id) - break; - } - - if (i == ARRAY_SIZE(macronix_spi_flash_table)) { - debug("SF: Unsupported Macronix ID %04x\n", id); - return NULL; - } - - flash = spi_flash_alloc_base(spi, params->name); - if (!flash) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - - flash->page_size = 256; - flash->sector_size = 256 * 16 * 16; - flash->size = flash->sector_size * params->nr_blocks; - - /* Clear BP# bits for read-only flash */ - spi_flash_cmd_write_status(flash, 0); - - return flash; -} diff --git a/drivers/mtd/spi/ramtron.c b/drivers/mtd/spi/ramtron.c index 38f9d69..d50da37 100644 --- a/drivers/mtd/spi/ramtron.c +++ b/drivers/mtd/spi/ramtron.c @@ -36,7 +36,7 @@ #include <common.h> #include <malloc.h> #include <spi_flash.h> -#include "spi_flash_internal.h" +#include "sf_internal.h" /* * Properties of supported FRAMs @@ -214,7 +214,8 @@ static int ramtron_erase(struct spi_flash *flash, u32 offset, size_t len) * nore: we are called here with idcode pointing to the first non-0x7f byte * already! */ -struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, u8 *idcode) +static struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, + u8 *idcode) { const struct ramtron_spi_fram_params *params; struct ramtron_spi_fram *sn; @@ -270,7 +271,7 @@ struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, u8 *idcode) return NULL; found: - sn = spi_flash_alloc(struct ramtron_spi_fram, spi, params->name); + sn = malloc(sizeof(*sn)); if (!sn) { debug("SF: Failed to allocate memory\n"); return NULL; @@ -285,3 +286,118 @@ found: return &sn->flash; } + +/* + * The following table holds all device probe functions + * (All flashes are removed and implemented a common probe at + * spi_flash_probe.c) + * + * shift: number of continuation bytes before the ID + * idcode: the expected IDCODE or 0xff for non JEDEC devices + * probe: the function to call + * + * Non JEDEC devices should be ordered in the table such that + * the probe functions with best detection algorithms come first. + * + * Several matching entries are permitted, they will be tried + * in sequence until a probe function returns non NULL. + * + * IDCODE_CONT_LEN may be redefined if a device needs to declare a + * larger "shift" value. IDCODE_PART_LEN generally shouldn't be + * changed. This is the max number of bytes probe functions may + * examine when looking up part-specific identification info. + * + * Probe functions will be given the idcode buffer starting at their + * manu id byte (the "idcode" in the table below). In other words, + * all of the continuation bytes will be skipped (the "shift" below). + */ +#define IDCODE_CONT_LEN 0 +#define IDCODE_PART_LEN 5 +static const struct { + const u8 shift; + const u8 idcode; + struct spi_flash *(*probe) (struct spi_slave *spi, u8 *idcode); +} flashes[] = { + /* Keep it sorted by define name */ +#ifdef CONFIG_SPI_FRAM_RAMTRON + { 6, 0xc2, spi_fram_probe_ramtron, }, +# undef IDCODE_CONT_LEN +# define IDCODE_CONT_LEN 6 +#endif +#ifdef CONFIG_SPI_FRAM_RAMTRON_NON_JEDEC + { 0, 0xff, spi_fram_probe_ramtron, }, +#endif +}; +#define IDCODE_LEN (IDCODE_CONT_LEN + IDCODE_PART_LEN) + +struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int spi_mode) +{ + struct spi_slave *spi; + struct spi_flash *flash = NULL; + int ret, i, shift; + u8 idcode[IDCODE_LEN], *idp; + + spi = spi_setup_slave(bus, cs, max_hz, spi_mode); + if (!spi) { + printf("SF: Failed to set up slave\n"); + return NULL; + } + + ret = spi_claim_bus(spi); + if (ret) { + debug("SF: Failed to claim SPI bus: %d\n", ret); + goto err_claim_bus; + } + + /* Read the ID codes */ + ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode)); + if (ret) + goto err_read_id; + +#ifdef DEBUG + printf("SF: Got idcodes\n"); + print_buffer(0, idcode, 1, sizeof(idcode), 0); +#endif + + /* count the number of continuation bytes */ + for (shift = 0, idp = idcode; + shift < IDCODE_CONT_LEN && *idp == 0x7f; + ++shift, ++idp) + continue; + + /* search the table for matches in shift and id */ + for (i = 0; i < ARRAY_SIZE(flashes); ++i) + if (flashes[i].shift == shift && flashes[i].idcode == *idp) { + /* we have a match, call probe */ + flash = flashes[i].probe(spi, idp); + if (flash) + break; + } + + if (!flash) { + printf("SF: Unsupported manufacturer %02x\n", *idp); + goto err_manufacturer_probe; + } + + printf("SF: Detected %s with total size ", flash->name); + print_size(flash->size, ""); + puts("\n"); + + spi_release_bus(spi); + + return flash; + +err_manufacturer_probe: +err_read_id: + spi_release_bus(spi); +err_claim_bus: + spi_free_slave(spi); + return NULL; +} + +void spi_flash_free(struct spi_flash *flash) +{ + spi_free_slave(flash->spi); + free(flash); +} diff --git a/drivers/mtd/spi/sf.c b/drivers/mtd/spi/sf.c new file mode 100644 index 0000000..ddbdda0 --- /dev/null +++ b/drivers/mtd/spi/sf.c @@ -0,0 +1,54 @@ +/* + * SPI flash interface + * + * Copyright (C) 2008 Atmel Corporation + * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik + * + * Licensed under the GPL-2 or later. + */ + +#include <common.h> +#include <spi.h> + +static int spi_flash_read_write(struct spi_slave *spi, + const u8 *cmd, size_t cmd_len, + const u8 *data_out, u8 *data_in, + size_t data_len) +{ + unsigned long flags = SPI_XFER_BEGIN; + int ret; + + if (data_len == 0) + flags |= SPI_XFER_END; + + ret = spi_xfer(spi, cmd_len * 8, cmd, NULL, flags); + if (ret) { + debug("SF: Failed to send command (%zu bytes): %d\n", + cmd_len, ret); + } else if (data_len != 0) { + ret = spi_xfer(spi, data_len * 8, data_out, data_in, + SPI_XFER_END); + if (ret) + debug("SF: Failed to transfer %zu bytes of data: %d\n", + data_len, ret); + } + + return ret; +} + +int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd, + size_t cmd_len, void *data, size_t data_len) +{ + return spi_flash_read_write(spi, cmd, cmd_len, NULL, data, data_len); +} + +int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len) +{ + return spi_flash_cmd_read(spi, &cmd, 1, response, len); +} + +int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, + const void *data, size_t data_len) +{ + return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len); +} diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/sf_internal.h index af1afa9..12d02f9 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/sf_internal.h @@ -2,42 +2,43 @@ * SPI flash internal definitions * * Copyright (C) 2008 Atmel Corporation + * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc. + * + * Licensed under the GPL-2 or later. */ -/* Common parameters -- kind of high, but they should only occur when there - * is a problem (and well your system already is broken), so err on the side - * of caution in case we're dealing with slower SPI buses and/or processors. - */ -#define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ) -#define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ) -#define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ) +#ifndef _SPI_FLASH_INTERNAL_H_ +#define _SPI_FLASH_INTERNAL_H_ -/* Common commands */ -#define CMD_READ_ID 0x9f +#define SPI_FLASH_16MB_BOUN 0x1000000 -#define CMD_READ_ARRAY_SLOW 0x03 -#define CMD_READ_ARRAY_FAST 0x0b +/* SECT flags */ +#define SECT_4K (1 << 1) +#define SECT_32K (1 << 2) +#define E_FSR (1 << 3) + +/* Erase commands */ +#define CMD_ERASE_4K 0x20 +#define CMD_ERASE_32K 0x52 +#define CMD_ERASE_CHIP 0xc7 +#define CMD_ERASE_64K 0xd8 +/* Write commands */ #define CMD_WRITE_STATUS 0x01 #define CMD_PAGE_PROGRAM 0x02 #define CMD_WRITE_DISABLE 0x04 #define CMD_READ_STATUS 0x05 -#define CMD_FLAG_STATUS 0x70 #define CMD_WRITE_ENABLE 0x06 -#define CMD_ERASE_4K 0x20 -#define CMD_ERASE_32K 0x52 -#define CMD_ERASE_64K 0xd8 -#define CMD_ERASE_CHIP 0xc7 - -#define SPI_FLASH_16MB_BOUN 0x1000000 +#define CMD_READ_CONFIG 0x35 +#define CMD_FLAG_STATUS 0x70 -/* Manufacture ID's */ -#define SPI_FLASH_SPANSION_IDCODE0 0x01 -#define SPI_FLASH_STMICRO_IDCODE0 0x20 -#define SPI_FLASH_WINBOND_IDCODE0 0xef +/* Read commands */ +#define CMD_READ_ARRAY_SLOW 0x03 +#define CMD_READ_ARRAY_FAST 0x0b +#define CMD_READ_ID 0x9f -#ifdef CONFIG_SPI_FLASH_BAR /* Bank addr access commands */ +#ifdef CONFIG_SPI_FLASH_BAR # define CMD_BANKADDR_BRWR 0x17 # define CMD_BANKADDR_BRRD 0x16 # define CMD_EXTNADDR_WREAR 0xC5 @@ -48,6 +49,21 @@ #define STATUS_WIP 0x01 #define STATUS_PEC 0x80 +/* Flash timeout values */ +#define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ) +#define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ) +#define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ) + +/* SST specific */ +#ifdef CONFIG_SPI_FLASH_SST +# define SST_WP 0x01 /* Supports AAI word program */ +# define CMD_SST_BP 0x02 /* Byte Program */ +# define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */ + +int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len, + const void *buf); +#endif + /* Send a single-byte command to the device and read the response */ int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len); @@ -58,9 +74,6 @@ int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len); int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, void *data, size_t data_len); -int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, - size_t len, void *data); - /* * Send a multi-byte command to the device followed by (optional) * data. Used for programming the flash array, etc. @@ -68,46 +81,34 @@ int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, const void *data, size_t data_len); -/* - * Write the requested data out breaking it up into multiple write - * commands as needed per the write size. - */ -int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, - size_t len, const void *buf); -/* - * Enable writing on the SPI flash. - */ +/* Flash erase(sectors) operation, support all possible erase commands */ +int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len); + +/* Program the status register */ +int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr); + +/* Set quad enbale bit */ +int spi_flash_set_qeb(struct spi_flash *flash); + +/* Enable writing on the SPI flash */ static inline int spi_flash_cmd_write_enable(struct spi_flash *flash) { return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0); } -/* - * Disable writing on the SPI flash. - */ +/* Disable writing on the SPI flash */ static inline int spi_flash_cmd_write_disable(struct spi_flash *flash) { return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0); } -/* Program the status register. */ -int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr); - -#ifdef CONFIG_SPI_FLASH_BAR -/* Program the bank address register */ -int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel); - -/* Configure the BAR - discover the bank cmds */ -int spi_flash_bank_config(struct spi_flash *flash, u8 idcode0); -#endif - /* - * Same as spi_flash_cmd_read() except it also claims/releases the SPI - * bus. Used as common part of the ->read() operation. + * Send the read status command to the device and wait for the wip + * (write-in-progress) bit to clear itself. */ -int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, - size_t cmd_len, void *data, size_t data_len); +int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout); + /* * Used for spi_flash write operation * - SPI claim @@ -120,21 +121,22 @@ int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd, size_t cmd_len, const void *buf, size_t buf_len); /* - * Send the read status command to the device and wait for the wip - * (write-in-progress) bit to clear itself. + * Flash write operation, support all possible write commands. + * Write the requested data out breaking it up into multiple write + * commands as needed per the write size. */ -int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout); +int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset, + size_t len, const void *buf); + +/* + * Same as spi_flash_cmd_read() except it also claims/releases the SPI + * bus. Used as common part of the ->read() operation. + */ +int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, + size_t cmd_len, void *data, size_t data_len); + +/* Flash read operation, support all possible read commands */ +int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, + size_t len, void *data); -/* Erase sectors. */ -int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len); - -/* Manufacturer-specific probe functions */ -struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode); -struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode); -struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode); -struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode); -struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode); -struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode); -struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode); -struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, u8 *idcode); -struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, u8 *idcode); +#endif /* _SPI_FLASH_INTERNAL_H_ */ diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c new file mode 100644 index 0000000..2396e22 --- /dev/null +++ b/drivers/mtd/spi/sf_ops.c @@ -0,0 +1,405 @@ +/* + * SPI flash operations + * + * Copyright (C) 2008 Atmel Corporation + * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik + * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <common.h> +#include <spi.h> +#include <spi_flash.h> +#include <watchdog.h> + +#include "sf_internal.h" + +static void spi_flash_addr(u32 addr, u8 *cmd) +{ + /* cmd[0] is actual command */ + cmd[1] = addr >> 16; + cmd[2] = addr >> 8; + cmd[3] = addr >> 0; +} + +int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) +{ + u8 cmd; + int ret; + + cmd = CMD_WRITE_STATUS; + ret = spi_flash_write_common(flash, &cmd, 1, &sr, 1); + if (ret < 0) { + debug("SF: fail to write status register\n"); + return ret; + } + + return 0; +} + +#ifdef CONFIG_SPI_FLASH_BAR +static int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel) +{ + u8 cmd; + int ret; + + if (flash->bank_curr == bank_sel) { + debug("SF: not require to enable bank%d\n", bank_sel); + return 0; + } + + cmd = flash->bank_write_cmd; + ret = spi_flash_write_common(flash, &cmd, 1, &bank_sel, 1); + if (ret < 0) { + debug("SF: fail to write bank register\n"); + return ret; + } + flash->bank_curr = bank_sel; + + return 0; +} +#endif + +int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout) +{ + struct spi_slave *spi = flash->spi; + unsigned long timebase; + int ret; + u8 status; + u8 check_status = 0x0; + u8 poll_bit = STATUS_WIP; + u8 cmd = flash->poll_cmd; + + if (cmd == CMD_FLAG_STATUS) { + poll_bit = STATUS_PEC; + check_status = poll_bit; + } + + ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN); + if (ret) { + debug("SF: fail to read %s status register\n", + cmd == CMD_READ_STATUS ? "read" : "flag"); + return ret; + } + + timebase = get_timer(0); + do { + WATCHDOG_RESET(); + + ret = spi_xfer(spi, 8, NULL, &status, 0); + if (ret) + return -1; + + if ((status & poll_bit) == check_status) + break; + + } while (get_timer(timebase) < timeout); + + spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END); + + if ((status & poll_bit) == check_status) + return 0; + + /* Timed out */ + debug("SF: time out!\n"); + return -1; +} + +int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd, + size_t cmd_len, const void *buf, size_t buf_len) +{ + struct spi_slave *spi = flash->spi; + unsigned long timeout = SPI_FLASH_PROG_TIMEOUT; + int ret; + + if (buf == NULL) + timeout = SPI_FLASH_PAGE_ERASE_TIMEOUT; + + ret = spi_claim_bus(flash->spi); + if (ret) { + debug("SF: unable to claim SPI bus\n"); + return ret; + } + + ret = spi_flash_cmd_write_enable(flash); + if (ret < 0) { + debug("SF: enabling write failed\n"); + return ret; + } + + ret = spi_flash_cmd_write(spi, cmd, cmd_len, buf, buf_len); + if (ret < 0) { + debug("SF: write cmd failed\n"); + return ret; + } + + ret = spi_flash_cmd_wait_ready(flash, timeout); + if (ret < 0) { + debug("SF: write %s timed out\n", + timeout == SPI_FLASH_PROG_TIMEOUT ? + "program" : "page erase"); + return ret; + } + + spi_release_bus(spi); + + return ret; +} + +int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len) +{ + u32 erase_size; + u8 cmd[4]; + int ret = -1; + + erase_size = flash->erase_size; + if (offset % erase_size || len % erase_size) { + debug("SF: Erase offset/length not multiple of erase size\n"); + return -1; + } + + cmd[0] = flash->erase_cmd; + while (len) { +#ifdef CONFIG_SPI_FLASH_BAR + u8 bank_sel; + + bank_sel = offset / SPI_FLASH_16MB_BOUN; + + ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); + if (ret) { + debug("SF: fail to set bank%d\n", bank_sel); + return ret; + } +#endif + spi_flash_addr(offset, cmd); + + debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1], + cmd[2], cmd[3], offset); + + ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0); + if (ret < 0) { + debug("SF: erase failed\n"); + break; + } + + offset += erase_size; + len -= erase_size; + } + + return ret; +} + +int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset, + size_t len, const void *buf) +{ + unsigned long byte_addr, page_size; + size_t chunk_len, actual; + u8 cmd[4]; + int ret = -1; + + page_size = flash->page_size; + + cmd[0] = CMD_PAGE_PROGRAM; + for (actual = 0; actual < len; actual += chunk_len) { +#ifdef CONFIG_SPI_FLASH_BAR + u8 bank_sel; + + bank_sel = offset / SPI_FLASH_16MB_BOUN; + + ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); + if (ret) { + debug("SF: fail to set bank%d\n", bank_sel); + return ret; + } +#endif + byte_addr = offset % page_size; + chunk_len = min(len - actual, page_size - byte_addr); + + if (flash->spi->max_write_size) + chunk_len = min(chunk_len, flash->spi->max_write_size); + + spi_flash_addr(offset, cmd); + + debug("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n", + buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); + + ret = spi_flash_write_common(flash, cmd, sizeof(cmd), + buf + actual, chunk_len); + if (ret < 0) { + debug("SF: write failed\n"); + break; + } + + offset += chunk_len; + } + + return ret; +} + +int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, + size_t cmd_len, void *data, size_t data_len) +{ + struct spi_slave *spi = flash->spi; + int ret; + + ret = spi_claim_bus(flash->spi); + if (ret) { + debug("SF: unable to claim SPI bus\n"); + return ret; + } + + ret = spi_flash_cmd_read(spi, cmd, cmd_len, data, data_len); + if (ret < 0) { + debug("SF: read cmd failed\n"); + return ret; + } + + spi_release_bus(spi); + + return ret; +} + +int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, + size_t len, void *data) +{ + u8 cmd[5], bank_sel = 0; + u32 remain_len, read_len; + int ret = -1; + + /* Handle memory-mapped SPI */ + if (flash->memory_map) { + spi_xfer(flash->spi, 0, NULL, NULL, SPI_XFER_MMAP); + memcpy(data, flash->memory_map + offset, len); + spi_xfer(flash->spi, 0, NULL, NULL, SPI_XFER_MMAP_END); + return 0; + } + + cmd[0] = CMD_READ_ARRAY_FAST; + cmd[4] = 0x00; + + while (len) { +#ifdef CONFIG_SPI_FLASH_BAR + bank_sel = offset / SPI_FLASH_16MB_BOUN; + + ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); + if (ret) { + debug("SF: fail to set bank%d\n", bank_sel); + return ret; + } +#endif + remain_len = (SPI_FLASH_16MB_BOUN * (bank_sel + 1) - offset); + if (len < remain_len) + read_len = len; + else + read_len = remain_len; + + spi_flash_addr(offset, cmd); + + ret = spi_flash_read_common(flash, cmd, sizeof(cmd), + data, read_len); + if (ret < 0) { + debug("SF: read failed\n"); + break; + } + + offset += read_len; + len -= read_len; + data += read_len; + } + + return ret; +} + +#ifdef CONFIG_SPI_FLASH_SST +static int sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf) +{ + int ret; + u8 cmd[4] = { + CMD_SST_BP, + offset >> 16, + offset >> 8, + offset, + }; + + debug("BP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n", + spi_w8r8(flash->spi, CMD_READ_STATUS), buf, cmd[0], offset); + + ret = spi_flash_cmd_write_enable(flash); + if (ret) + return ret; + + ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), buf, 1); + if (ret) + return ret; + + return spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); +} + +int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len, + const void *buf) +{ + size_t actual, cmd_len; + int ret; + u8 cmd[4]; + + ret = spi_claim_bus(flash->spi); + if (ret) { + debug("SF: Unable to claim SPI bus\n"); + return ret; + } + + /* If the data is not word aligned, write out leading single byte */ + actual = offset % 2; + if (actual) { + ret = sst_byte_write(flash, offset, buf); + if (ret) + goto done; + } + offset += actual; + + ret = spi_flash_cmd_write_enable(flash); + if (ret) + goto done; + + cmd_len = 4; + cmd[0] = CMD_SST_AAI_WP; + cmd[1] = offset >> 16; + cmd[2] = offset >> 8; + cmd[3] = offset; + + for (; actual < len - 1; actual += 2) { + debug("WP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n", + spi_w8r8(flash->spi, CMD_READ_STATUS), buf + actual, + cmd[0], offset); + + ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len, + buf + actual, 2); + if (ret) { + debug("SF: sst word program failed\n"); + break; + } + + ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); + if (ret) + break; + + cmd_len = 1; + offset += 2; + } + + if (!ret) + ret = spi_flash_cmd_write_disable(flash); + + /* If there is a single trailing byte, write it out */ + if (!ret && actual != len) + ret = sst_byte_write(flash, offset, buf + actual); + + done: + debug("SF: sst: program %s %zu bytes @ 0x%zx\n", + ret ? "failure" : "success", len, offset - actual); + + spi_release_bus(flash->spi); + return ret; +} +#endif diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c new file mode 100644 index 0000000..4251b1b --- /dev/null +++ b/drivers/mtd/spi/sf_probe.c @@ -0,0 +1,363 @@ +/* + * SPI flash probing + * + * Copyright (C) 2008 Atmel Corporation + * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik + * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <common.h> +#include <fdtdec.h> +#include <malloc.h> +#include <spi.h> +#include <spi_flash.h> + +#include "sf_internal.h" + +DECLARE_GLOBAL_DATA_PTR; + +/** + * struct spi_flash_params - SPI/QSPI flash device params structure + * + * @name: Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO]) + * @jedec: Device jedec ID (0x[1byte_manuf_id][2byte_dev_id]) + * @ext_jedec: Device ext_jedec ID + * @sector_size: Sector size of this device + * @nr_sectors: No.of sectors on this device + * @flags: Importent param, for flash specific behaviour + */ +struct spi_flash_params { + const char *name; + u32 jedec; + u16 ext_jedec; + u32 sector_size; + u32 nr_sectors; + u16 flags; +}; + +static const struct spi_flash_params spi_flash_params_table[] = { +#ifdef CONFIG_SPI_FLASH_ATMEL /* ATMEL */ + {"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4, SECT_4K}, + {"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8, SECT_4K}, + {"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8, SECT_4K}, + {"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16, SECT_4K}, + {"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32, SECT_4K}, + {"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64, SECT_4K}, + {"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128, SECT_4K}, +#endif +#ifdef CONFIG_SPI_FLASH_EON /* EON */ + {"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64, 0}, + {"EN25Q64", 0x1c3017, 0x0, 64 * 1024, 128, SECT_4K}, + {"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256, 0}, + {"EN25S64", 0x1c3817, 0x0, 64 * 1024, 128, 0}, +#endif +#ifdef CONFIG_SPI_FLASH_GIGADEVICE /* GIGADEVICE */ + {"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128, SECT_4K}, + {"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64, SECT_4K}, +#endif +#ifdef CONFIG_SPI_FLASH_MACRONIX /* MACRONIX */ + {"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8, 0}, + {"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16, 0}, + {"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32, 0}, + {"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64, 0}, + {"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128, 0}, + {"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256, 0}, + {"MX25L25635F", 0xc22019, 0x0, 64 * 1024, 512, 0}, + {"MX25L51235F", 0xc2201A, 0x0, 64 * 1024, 1024, 0}, + {"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256, 0}, +#endif +#ifdef CONFIG_SPI_FLASH_SPANSION /* SPANSION */ + {"S25FL008A", 0x010213, 0x0, 64 * 1024, 16, 0}, + {"S25FL016A", 0x010214, 0x0, 64 * 1024, 32, 0}, + {"S25FL032A", 0x010215, 0x0, 64 * 1024, 64, 0}, + {"S25FL064A", 0x010216, 0x0, 64 * 1024, 128, 0}, + {"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64, 0}, + {"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256, 0}, + {"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64, 0}, + {"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128, 0}, + {"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256, 0}, + {"S25FL256S_256K", 0x010219, 0x4d00, 64 * 1024, 512, 0}, + {"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512, 0}, + {"S25FL512S_256K", 0x010220, 0x4d00, 64 * 1024, 1024, 0}, + {"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024, 0}, +#endif +#ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */ + {"M25P10", 0x202011, 0x0, 32 * 1024, 4, 0}, + {"M25P20", 0x202012, 0x0, 64 * 1024, 4, 0}, + {"M25P40", 0x202013, 0x0, 64 * 1024, 8, 0}, + {"M25P80", 0x202014, 0x0, 64 * 1024, 16, 0}, + {"M25P16", 0x202015, 0x0, 64 * 1024, 32, 0}, + {"M25P32", 0x202016, 0x0, 64 * 1024, 64, 0}, + {"M25P64", 0x202017, 0x0, 64 * 1024, 128, 0}, + {"M25P128", 0x202018, 0x0, 256 * 1024, 64, 0}, + {"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64, SECT_4K}, + {"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64, SECT_4K}, + {"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128, SECT_4K}, + {"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128, SECT_4K}, + {"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256, SECT_4K}, + {"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256, SECT_4K}, + {"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512, SECT_4K}, + {"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512, SECT_4K}, + {"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, E_FSR | SECT_4K}, + {"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, E_FSR | SECT_4K}, + {"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, E_FSR | SECT_4K}, + {"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, E_FSR | SECT_4K}, +#endif +#ifdef CONFIG_SPI_FLASH_SST /* SST */ + {"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, SECT_4K | SST_WP}, + {"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, SECT_4K | SST_WP}, + {"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, SECT_4K | SST_WP}, + {"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, SECT_4K | SST_WP}, + {"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128, SECT_4K}, + {"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, SECT_4K | SST_WP}, + {"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, SECT_4K | SST_WP}, + {"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, SECT_4K | SST_WP}, + {"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, SECT_4K | SST_WP}, + {"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, SECT_4K | SST_WP}, +#endif +#ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */ + {"W25P80", 0xef2014, 0x0, 64 * 1024, 16, 0}, + {"W25P16", 0xef2015, 0x0, 64 * 1024, 32, 0}, + {"W25P32", 0xef2016, 0x0, 64 * 1024, 64, 0}, + {"W25X40", 0xef3013, 0x0, 64 * 1024, 8, SECT_4K}, + {"W25X16", 0xef3015, 0x0, 64 * 1024, 32, SECT_4K}, + {"W25X32", 0xef3016, 0x0, 64 * 1024, 64, SECT_4K}, + {"W25X64", 0xef3017, 0x0, 64 * 1024, 128, SECT_4K}, + {"W25Q80BL", 0xef4014, 0x0, 64 * 1024, 16, SECT_4K}, + {"W25Q16CL", 0xef4015, 0x0, 64 * 1024, 32, SECT_4K}, + {"W25Q32BV", 0xef4016, 0x0, 64 * 1024, 64, SECT_4K}, + {"W25Q64CV", 0xef4017, 0x0, 64 * 1024, 128, SECT_4K}, + {"W25Q128BV", 0xef4018, 0x0, 64 * 1024, 256, SECT_4K}, + {"W25Q256", 0xef4019, 0x0, 64 * 1024, 512, SECT_4K}, + {"W25Q80BW", 0xef5014, 0x0, 64 * 1024, 16, SECT_4K}, + {"W25Q16DW", 0xef6015, 0x0, 64 * 1024, 32, SECT_4K}, + {"W25Q32DW", 0xef6016, 0x0, 64 * 1024, 64, SECT_4K}, + {"W25Q64DW", 0xef6017, 0x0, 64 * 1024, 128, SECT_4K}, + {"W25Q128FW", 0xef6018, 0x0, 64 * 1024, 256, SECT_4K}, +#endif + /* + * Note: + * Below paired flash devices has similar spi_flash_params params. + * (S25FL129P_64K, S25FL128S_64K) + * (W25Q80BL, W25Q80BV) + * (W25Q16CL, W25Q16DV) + * (W25Q32BV, W25Q32FV_SPI) + * (W25Q64CV, W25Q64FV_SPI) + * (W25Q128BV, W25Q128FV_SPI) + * (W25Q32DW, W25Q32FV_QPI) + * (W25Q64DW, W25Q64FV_QPI) + * (W25Q128FW, W25Q128FV_QPI) + */ +}; + +static struct spi_flash *spi_flash_validate_params(struct spi_slave *spi, + u8 *idcode) +{ + const struct spi_flash_params *params; + struct spi_flash *flash; + int i; + u16 jedec = idcode[1] << 8 | idcode[2]; + u16 ext_jedec = idcode[3] << 8 | idcode[4]; + + /* Get the flash id (jedec = manuf_id + dev_id, ext_jedec) */ + for (i = 0; i < ARRAY_SIZE(spi_flash_params_table); i++) { + params = &spi_flash_params_table[i]; + if ((params->jedec >> 16) == idcode[0]) { + if ((params->jedec & 0xFFFF) == jedec) { + if (params->ext_jedec == 0) + break; + else if (params->ext_jedec == ext_jedec) + break; + } + } + } + + if (i == ARRAY_SIZE(spi_flash_params_table)) { + printf("SF: Unsupported flash IDs: "); + printf("manuf %02x, jedec %04x, ext_jedec %04x\n", + idcode[0], jedec, ext_jedec); + return NULL; + } + + flash = malloc(sizeof(*flash)); + if (!flash) { + debug("SF: Failed to allocate spi_flash\n"); + return NULL; + } + memset(flash, '\0', sizeof(*flash)); + + flash->spi = spi; + flash->name = params->name; + flash->memory_map = spi->memory_map; + + /* Assign spi_flash ops */ + flash->write = spi_flash_cmd_write_ops; +#ifdef CONFIG_SPI_FLASH_SST + if (params->flags & SST_WP) + flash->write = sst_write_wp; +#endif + flash->erase = spi_flash_cmd_erase_ops; + flash->read = spi_flash_cmd_read_ops; + + /* Compute the flash size */ + flash->page_size = (ext_jedec == 0x4d00) ? 512 : 256; + flash->sector_size = params->sector_size; + flash->size = flash->sector_size * params->nr_sectors; + + /* Compute erase sector and command */ + if (params->flags & SECT_4K) { + flash->erase_cmd = CMD_ERASE_4K; + flash->erase_size = 4096; + } else if (params->flags & SECT_32K) { + flash->erase_cmd = CMD_ERASE_32K; + flash->erase_size = 32768; + } else { + flash->erase_cmd = CMD_ERASE_64K; + flash->erase_size = flash->sector_size; + } + + /* Poll cmd seclection */ + flash->poll_cmd = CMD_READ_STATUS; +#ifdef CONFIG_SPI_FLASH_STMICRO + if (params->flags & E_FSR) + flash->poll_cmd = CMD_FLAG_STATUS; +#endif + + /* Configure the BAR - discover bank cmds and read current bank */ +#ifdef CONFIG_SPI_FLASH_BAR + u8 curr_bank = 0; + if (flash->size > SPI_FLASH_16MB_BOUN) { + flash->bank_read_cmd = (idcode[0] == 0x01) ? + CMD_BANKADDR_BRRD : CMD_EXTNADDR_RDEAR; + flash->bank_write_cmd = (idcode[0] == 0x01) ? + CMD_BANKADDR_BRWR : CMD_EXTNADDR_WREAR; + + if (spi_flash_read_common(flash, &flash->bank_read_cmd, 1, + &curr_bank, 1)) { + debug("SF: fail to read bank addr register\n"); + return NULL; + } + flash->bank_curr = curr_bank; + } else { + flash->bank_curr = curr_bank; + } +#endif + + /* Flash powers up read-only, so clear BP# bits */ +#if defined(CONFIG_SPI_FLASH_ATMEL) || \ + defined(CONFIG_SPI_FLASH_MACRONIX) || \ + defined(CONFIG_SPI_FLASH_SST) + spi_flash_cmd_write_status(flash, 0); +#endif + + return flash; +} + +#ifdef CONFIG_OF_CONTROL +int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash) +{ + fdt_addr_t addr; + fdt_size_t size; + int node; + + /* If there is no node, do nothing */ + node = fdtdec_next_compatible(blob, 0, COMPAT_GENERIC_SPI_FLASH); + if (node < 0) + return 0; + + addr = fdtdec_get_addr_size(blob, node, "memory-map", &size); + if (addr == FDT_ADDR_T_NONE) { + debug("%s: Cannot decode address\n", __func__); + return 0; + } + + if (flash->size != size) { + debug("%s: Memory map must cover entire device\n", __func__); + return -1; + } + flash->memory_map = (void *)addr; + + return 0; +} +#endif /* CONFIG_OF_CONTROL */ + +struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int spi_mode) +{ + struct spi_slave *spi; + struct spi_flash *flash = NULL; + u8 idcode[5]; + int ret; + + /* Setup spi_slave */ + spi = spi_setup_slave(bus, cs, max_hz, spi_mode); + if (!spi) { + printf("SF: Failed to set up slave\n"); + return NULL; + } + + /* Claim spi bus */ + ret = spi_claim_bus(spi); + if (ret) { + debug("SF: Failed to claim SPI bus: %d\n", ret); + goto err_claim_bus; + } + + /* Read the ID codes */ + ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode)); + if (ret) { + printf("SF: Failed to get idcodes\n"); + goto err_read_id; + } + +#ifdef DEBUG + printf("SF: Got idcodes\n"); + print_buffer(0, idcode, 1, sizeof(idcode), 0); +#endif + + /* Validate params from spi_flash_params table */ + flash = spi_flash_validate_params(spi, idcode); + if (!flash) + goto err_read_id; + +#ifdef CONFIG_OF_CONTROL + if (spi_flash_decode_fdt(gd->fdt_blob, flash)) { + debug("SF: FDT decode error\n"); + goto err_read_id; + } +#endif +#ifndef CONFIG_SPL_BUILD + printf("SF: Detected %s with page size ", flash->name); + print_size(flash->page_size, ", erase size "); + print_size(flash->erase_size, ", total "); + print_size(flash->size, ""); + if (flash->memory_map) + printf(", mapped at %p", flash->memory_map); + puts("\n"); +#endif +#ifndef CONFIG_SPI_FLASH_BAR + if (flash->size > SPI_FLASH_16MB_BOUN) { + puts("SF: Warning - Only lower 16MiB accessible,"); + puts(" Full access #define CONFIG_SPI_FLASH_BAR\n"); + } +#endif + + /* Release spi bus */ + spi_release_bus(spi); + + return flash; + +err_read_id: + spi_release_bus(spi); +err_claim_bus: + spi_free_slave(spi); + return NULL; +} + +void spi_flash_free(struct spi_flash *flash) +{ + spi_free_slave(flash->spi); + free(flash); +} diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c deleted file mode 100644 index fa7ac8c..0000000 --- a/drivers/mtd/spi/spansion.c +++ /dev/null @@ -1,141 +0,0 @@ -/* - * Copyright (C) 2009 Freescale Semiconductor, Inc. - * - * Author: Mingkai Hu (Mingkai.hu@freescale.com) - * Based on stmicro.c by Wolfgang Denk (wd@denx.de), - * TsiChung Liew (Tsi-Chung.Liew@freescale.com), - * and Jason McMullan (mcmullan@netapp.com) - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <malloc.h> -#include <spi_flash.h> - -#include "spi_flash_internal.h" - -struct spansion_spi_flash_params { - u16 idcode1; - u16 idcode2; - u16 pages_per_sector; - u16 nr_sectors; - const char *name; -}; - -static const struct spansion_spi_flash_params spansion_spi_flash_table[] = { - { - .idcode1 = 0x0213, - .idcode2 = 0, - .pages_per_sector = 256, - .nr_sectors = 16, - .name = "S25FL008A", - }, - { - .idcode1 = 0x0214, - .idcode2 = 0, - .pages_per_sector = 256, - .nr_sectors = 32, - .name = "S25FL016A", - }, - { - .idcode1 = 0x0215, - .idcode2 = 0, - .pages_per_sector = 256, - .nr_sectors = 64, - .name = "S25FL032A", - }, - { - .idcode1 = 0x0216, - .idcode2 = 0, - .pages_per_sector = 256, - .nr_sectors = 128, - .name = "S25FL064A", - }, - { - .idcode1 = 0x2018, - .idcode2 = 0x0301, - .pages_per_sector = 256, - .nr_sectors = 256, - .name = "S25FL128P_64K", - }, - { - .idcode1 = 0x2018, - .idcode2 = 0x0300, - .pages_per_sector = 1024, - .nr_sectors = 64, - .name = "S25FL128P_256K", - }, - { - .idcode1 = 0x0215, - .idcode2 = 0x4d00, - .pages_per_sector = 256, - .nr_sectors = 64, - .name = "S25FL032P", - }, - { - .idcode1 = 0x0216, - .idcode2 = 0x4d00, - .pages_per_sector = 256, - .nr_sectors = 128, - .name = "S25FL064P", - }, - { - .idcode1 = 0x2018, - .idcode2 = 0x4d01, - .pages_per_sector = 256, - .nr_sectors = 256, - .name = "S25FL129P_64K/S25FL128S_64K", - }, - { - .idcode1 = 0x0219, - .idcode2 = 0x4d01, - .pages_per_sector = 256, - .nr_sectors = 512, - .name = "S25FL256S_64K", - }, - { - .idcode1 = 0x0220, - .idcode2 = 0x4d01, - .pages_per_sector = 256, - .nr_sectors = 1024, - .name = "S25FL512S_64K", - }, -}; - -struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode) -{ - const struct spansion_spi_flash_params *params; - struct spi_flash *flash; - unsigned int i; - unsigned short jedec, ext_jedec; - - jedec = idcode[1] << 8 | idcode[2]; - ext_jedec = idcode[3] << 8 | idcode[4]; - - for (i = 0; i < ARRAY_SIZE(spansion_spi_flash_table); i++) { - params = &spansion_spi_flash_table[i]; - if (params->idcode1 == jedec) { - if (params->idcode2 == ext_jedec) - break; - } - } - - if (i == ARRAY_SIZE(spansion_spi_flash_table)) { - debug("SF: Unsupported SPANSION ID %04x %04x\n", - jedec, ext_jedec); - return NULL; - } - - flash = spi_flash_alloc_base(spi, params->name); - if (!flash) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - - flash->page_size = 256; - flash->sector_size = 256 * params->pages_per_sector; - flash->size = flash->sector_size * params->nr_sectors; - - return flash; -} diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c deleted file mode 100644 index 5d5055f..0000000 --- a/drivers/mtd/spi/spi_flash.c +++ /dev/null @@ -1,615 +0,0 @@ -/* - * SPI flash interface - * - * Copyright (C) 2008 Atmel Corporation - * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik - * - * Licensed under the GPL-2 or later. - */ - -#include <common.h> -#include <fdtdec.h> -#include <malloc.h> -#include <spi.h> -#include <spi_flash.h> -#include <watchdog.h> - -#include "spi_flash_internal.h" - -DECLARE_GLOBAL_DATA_PTR; - -static void spi_flash_addr(u32 addr, u8 *cmd) -{ - /* cmd[0] is actual command */ - cmd[1] = addr >> 16; - cmd[2] = addr >> 8; - cmd[3] = addr >> 0; -} - -static int spi_flash_read_write(struct spi_slave *spi, - const u8 *cmd, size_t cmd_len, - const u8 *data_out, u8 *data_in, - size_t data_len) -{ - unsigned long flags = SPI_XFER_BEGIN; - int ret; - - if (data_len == 0) - flags |= SPI_XFER_END; - - ret = spi_xfer(spi, cmd_len * 8, cmd, NULL, flags); - if (ret) { - debug("SF: Failed to send command (%zu bytes): %d\n", - cmd_len, ret); - } else if (data_len != 0) { - ret = spi_xfer(spi, data_len * 8, data_out, data_in, - SPI_XFER_END); - if (ret) - debug("SF: Failed to transfer %zu bytes of data: %d\n", - data_len, ret); - } - - return ret; -} - -int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len) -{ - return spi_flash_cmd_read(spi, &cmd, 1, response, len); -} - -int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd, - size_t cmd_len, void *data, size_t data_len) -{ - return spi_flash_read_write(spi, cmd, cmd_len, NULL, data, data_len); -} - -int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, - const void *data, size_t data_len) -{ - return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len); -} - -int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout) -{ - struct spi_slave *spi = flash->spi; - unsigned long timebase; - int ret; - u8 status; - u8 check_status = 0x0; - u8 poll_bit = STATUS_WIP; - u8 cmd = flash->poll_cmd; - - if (cmd == CMD_FLAG_STATUS) { - poll_bit = STATUS_PEC; - check_status = poll_bit; - } - - ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN); - if (ret) { - debug("SF: fail to read %s status register\n", - cmd == CMD_READ_STATUS ? "read" : "flag"); - return ret; - } - - timebase = get_timer(0); - do { - WATCHDOG_RESET(); - - ret = spi_xfer(spi, 8, NULL, &status, 0); - if (ret) - return -1; - - if ((status & poll_bit) == check_status) - break; - - } while (get_timer(timebase) < timeout); - - spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END); - - if ((status & poll_bit) == check_status) - return 0; - - /* Timed out */ - debug("SF: time out!\n"); - return -1; -} - -int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd, - size_t cmd_len, const void *buf, size_t buf_len) -{ - struct spi_slave *spi = flash->spi; - unsigned long timeout = SPI_FLASH_PROG_TIMEOUT; - int ret; - - if (buf == NULL) - timeout = SPI_FLASH_PAGE_ERASE_TIMEOUT; - - ret = spi_claim_bus(flash->spi); - if (ret) { - debug("SF: unable to claim SPI bus\n"); - return ret; - } - - ret = spi_flash_cmd_write_enable(flash); - if (ret < 0) { - debug("SF: enabling write failed\n"); - return ret; - } - - ret = spi_flash_cmd_write(spi, cmd, cmd_len, buf, buf_len); - if (ret < 0) { - debug("SF: write cmd failed\n"); - return ret; - } - - ret = spi_flash_cmd_wait_ready(flash, timeout); - if (ret < 0) { - debug("SF: write %s timed out\n", - timeout == SPI_FLASH_PROG_TIMEOUT ? - "program" : "page erase"); - return ret; - } - - spi_release_bus(spi); - - return ret; -} - -int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) -{ - u32 erase_size; - u8 cmd[4]; - int ret = -1; - - erase_size = flash->sector_size; - if (offset % erase_size || len % erase_size) { - debug("SF: Erase offset/length not multiple of erase size\n"); - return -1; - } - - if (erase_size == 4096) - cmd[0] = CMD_ERASE_4K; - else - cmd[0] = CMD_ERASE_64K; - - while (len) { -#ifdef CONFIG_SPI_FLASH_BAR - u8 bank_sel; - - bank_sel = offset / SPI_FLASH_16MB_BOUN; - - ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); - if (ret) { - debug("SF: fail to set bank%d\n", bank_sel); - return ret; - } -#endif - spi_flash_addr(offset, cmd); - - debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1], - cmd[2], cmd[3], offset); - - ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0); - if (ret < 0) { - debug("SF: erase failed\n"); - break; - } - - offset += erase_size; - len -= erase_size; - } - - return ret; -} - -int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, - size_t len, const void *buf) -{ - unsigned long byte_addr, page_size; - size_t chunk_len, actual; - u8 cmd[4]; - int ret = -1; - - page_size = flash->page_size; - - cmd[0] = CMD_PAGE_PROGRAM; - for (actual = 0; actual < len; actual += chunk_len) { -#ifdef CONFIG_SPI_FLASH_BAR - u8 bank_sel; - - bank_sel = offset / SPI_FLASH_16MB_BOUN; - - ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); - if (ret) { - debug("SF: fail to set bank%d\n", bank_sel); - return ret; - } -#endif - byte_addr = offset % page_size; - chunk_len = min(len - actual, page_size - byte_addr); - - if (flash->spi->max_write_size) - chunk_len = min(chunk_len, flash->spi->max_write_size); - - spi_flash_addr(offset, cmd); - - debug("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n", - buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); - - ret = spi_flash_write_common(flash, cmd, sizeof(cmd), - buf + actual, chunk_len); - if (ret < 0) { - debug("SF: write failed\n"); - break; - } - - offset += chunk_len; - } - - return ret; -} - -int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, - size_t cmd_len, void *data, size_t data_len) -{ - struct spi_slave *spi = flash->spi; - int ret; - - ret = spi_claim_bus(flash->spi); - if (ret) { - debug("SF: unable to claim SPI bus\n"); - return ret; - } - - ret = spi_flash_cmd_read(spi, cmd, cmd_len, data, data_len); - if (ret < 0) { - debug("SF: read cmd failed\n"); - return ret; - } - - spi_release_bus(spi); - - return ret; -} - -int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, - size_t len, void *data) -{ - u8 cmd[5], bank_sel = 0; - u32 remain_len, read_len; - int ret = -1; - - /* Handle memory-mapped SPI */ - if (flash->memory_map) { - memcpy(data, flash->memory_map + offset, len); - return 0; - } - - cmd[0] = CMD_READ_ARRAY_FAST; - cmd[4] = 0x00; - - while (len) { -#ifdef CONFIG_SPI_FLASH_BAR - bank_sel = offset / SPI_FLASH_16MB_BOUN; - - ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); - if (ret) { - debug("SF: fail to set bank%d\n", bank_sel); - return ret; - } -#endif - remain_len = (SPI_FLASH_16MB_BOUN * (bank_sel + 1) - offset); - if (len < remain_len) - read_len = len; - else - read_len = remain_len; - - spi_flash_addr(offset, cmd); - - ret = spi_flash_read_common(flash, cmd, sizeof(cmd), - data, read_len); - if (ret < 0) { - debug("SF: read failed\n"); - break; - } - - offset += read_len; - len -= read_len; - data += read_len; - } - - return ret; -} - -int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) -{ - u8 cmd; - int ret; - - cmd = CMD_WRITE_STATUS; - ret = spi_flash_write_common(flash, &cmd, 1, &sr, 1); - if (ret < 0) { - debug("SF: fail to write status register\n"); - return ret; - } - - return 0; -} - -#ifdef CONFIG_SPI_FLASH_BAR -int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel) -{ - u8 cmd; - int ret; - - if (flash->bank_curr == bank_sel) { - debug("SF: not require to enable bank%d\n", bank_sel); - return 0; - } - - cmd = flash->bank_write_cmd; - ret = spi_flash_write_common(flash, &cmd, 1, &bank_sel, 1); - if (ret < 0) { - debug("SF: fail to write bank register\n"); - return ret; - } - flash->bank_curr = bank_sel; - - return 0; -} - -int spi_flash_bank_config(struct spi_flash *flash, u8 idcode0) -{ - u8 cmd; - u8 curr_bank = 0; - - /* discover bank cmds */ - switch (idcode0) { - case SPI_FLASH_SPANSION_IDCODE0: - flash->bank_read_cmd = CMD_BANKADDR_BRRD; - flash->bank_write_cmd = CMD_BANKADDR_BRWR; - break; - case SPI_FLASH_STMICRO_IDCODE0: - case SPI_FLASH_WINBOND_IDCODE0: - flash->bank_read_cmd = CMD_EXTNADDR_RDEAR; - flash->bank_write_cmd = CMD_EXTNADDR_WREAR; - break; - default: - printf("SF: Unsupported bank commands %02x\n", idcode0); - return -1; - } - - /* read the bank reg - on which bank the flash is in currently */ - cmd = flash->bank_read_cmd; - if (flash->size > SPI_FLASH_16MB_BOUN) { - if (spi_flash_read_common(flash, &cmd, 1, &curr_bank, 1)) { - debug("SF: fail to read bank addr register\n"); - return -1; - } - flash->bank_curr = curr_bank; - } else { - flash->bank_curr = curr_bank; - } - - return 0; -} -#endif - -#ifdef CONFIG_OF_CONTROL -int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash) -{ - fdt_addr_t addr; - fdt_size_t size; - int node; - - /* If there is no node, do nothing */ - node = fdtdec_next_compatible(blob, 0, COMPAT_GENERIC_SPI_FLASH); - if (node < 0) - return 0; - - addr = fdtdec_get_addr_size(blob, node, "memory-map", &size); - if (addr == FDT_ADDR_T_NONE) { - debug("%s: Cannot decode address\n", __func__); - return 0; - } - - if (flash->size != size) { - debug("%s: Memory map must cover entire device\n", __func__); - return -1; - } - flash->memory_map = (void *)addr; - - return 0; -} -#endif /* CONFIG_OF_CONTROL */ - -/* - * The following table holds all device probe functions - * - * shift: number of continuation bytes before the ID - * idcode: the expected IDCODE or 0xff for non JEDEC devices - * probe: the function to call - * - * Non JEDEC devices should be ordered in the table such that - * the probe functions with best detection algorithms come first. - * - * Several matching entries are permitted, they will be tried - * in sequence until a probe function returns non NULL. - * - * IDCODE_CONT_LEN may be redefined if a device needs to declare a - * larger "shift" value. IDCODE_PART_LEN generally shouldn't be - * changed. This is the max number of bytes probe functions may - * examine when looking up part-specific identification info. - * - * Probe functions will be given the idcode buffer starting at their - * manu id byte (the "idcode" in the table below). In other words, - * all of the continuation bytes will be skipped (the "shift" below). - */ -#define IDCODE_CONT_LEN 0 -#define IDCODE_PART_LEN 5 -static const struct { - const u8 shift; - const u8 idcode; - struct spi_flash *(*probe) (struct spi_slave *spi, u8 *idcode); -} flashes[] = { - /* Keep it sorted by define name */ -#ifdef CONFIG_SPI_FLASH_ATMEL - { 0, 0x1f, spi_flash_probe_atmel, }, -#endif -#ifdef CONFIG_SPI_FLASH_EON - { 0, 0x1c, spi_flash_probe_eon, }, -#endif -#ifdef CONFIG_SPI_FLASH_GIGADEVICE - { 0, 0xc8, spi_flash_probe_gigadevice, }, -#endif -#ifdef CONFIG_SPI_FLASH_MACRONIX - { 0, 0xc2, spi_flash_probe_macronix, }, -#endif -#ifdef CONFIG_SPI_FLASH_SPANSION - { 0, 0x01, spi_flash_probe_spansion, }, -#endif -#ifdef CONFIG_SPI_FLASH_SST - { 0, 0xbf, spi_flash_probe_sst, }, -#endif -#ifdef CONFIG_SPI_FLASH_STMICRO - { 0, 0x20, spi_flash_probe_stmicro, }, -#endif -#ifdef CONFIG_SPI_FLASH_WINBOND - { 0, 0xef, spi_flash_probe_winbond, }, -#endif -#ifdef CONFIG_SPI_FRAM_RAMTRON - { 6, 0xc2, spi_fram_probe_ramtron, }, -# undef IDCODE_CONT_LEN -# define IDCODE_CONT_LEN 6 -#endif - /* Keep it sorted by best detection */ -#ifdef CONFIG_SPI_FLASH_STMICRO - { 0, 0xff, spi_flash_probe_stmicro, }, -#endif -#ifdef CONFIG_SPI_FRAM_RAMTRON_NON_JEDEC - { 0, 0xff, spi_fram_probe_ramtron, }, -#endif -}; -#define IDCODE_LEN (IDCODE_CONT_LEN + IDCODE_PART_LEN) - -struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, - unsigned int max_hz, unsigned int spi_mode) -{ - struct spi_slave *spi; - struct spi_flash *flash = NULL; - int ret, i, shift; - u8 idcode[IDCODE_LEN], *idp; - - spi = spi_setup_slave(bus, cs, max_hz, spi_mode); - if (!spi) { - printf("SF: Failed to set up slave\n"); - return NULL; - } - - ret = spi_claim_bus(spi); - if (ret) { - debug("SF: Failed to claim SPI bus: %d\n", ret); - goto err_claim_bus; - } - - /* Read the ID codes */ - ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode)); - if (ret) - goto err_read_id; - -#ifdef DEBUG - printf("SF: Got idcodes\n"); - print_buffer(0, idcode, 1, sizeof(idcode), 0); -#endif - - /* count the number of continuation bytes */ - for (shift = 0, idp = idcode; - shift < IDCODE_CONT_LEN && *idp == 0x7f; - ++shift, ++idp) - continue; - - /* search the table for matches in shift and id */ - for (i = 0; i < ARRAY_SIZE(flashes); ++i) - if (flashes[i].shift == shift && flashes[i].idcode == *idp) { - /* we have a match, call probe */ - flash = flashes[i].probe(spi, idp); - if (flash) - break; - } - - if (!flash) { - printf("SF: Unsupported manufacturer %02x\n", *idp); - goto err_manufacturer_probe; - } - -#ifdef CONFIG_SPI_FLASH_BAR - /* Configure the BAR - disover bank cmds and read current bank */ - ret = spi_flash_bank_config(flash, *idp); - if (ret < 0) - goto err_manufacturer_probe; -#endif - -#ifdef CONFIG_OF_CONTROL - if (spi_flash_decode_fdt(gd->fdt_blob, flash)) { - debug("SF: FDT decode error\n"); - goto err_manufacturer_probe; - } -#endif -#ifndef CONFIG_SPL_BUILD - printf("SF: Detected %s with page size ", flash->name); - print_size(flash->sector_size, ", total "); - print_size(flash->size, ""); - if (flash->memory_map) - printf(", mapped at %p", flash->memory_map); - puts("\n"); -#endif -#ifndef CONFIG_SPI_FLASH_BAR - if (flash->size > SPI_FLASH_16MB_BOUN) { - puts("SF: Warning - Only lower 16MiB accessible,"); - puts(" Full access #define CONFIG_SPI_FLASH_BAR\n"); - } -#endif - - spi_release_bus(spi); - - return flash; - -err_manufacturer_probe: -err_read_id: - spi_release_bus(spi); -err_claim_bus: - spi_free_slave(spi); - return NULL; -} - -void *spi_flash_do_alloc(int offset, int size, struct spi_slave *spi, - const char *name) -{ - struct spi_flash *flash; - void *ptr; - - ptr = malloc(size); - if (!ptr) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - memset(ptr, '\0', size); - flash = (struct spi_flash *)(ptr + offset); - - /* Set up some basic fields - caller will sort out sizes */ - flash->spi = spi; - flash->name = name; - flash->poll_cmd = CMD_READ_STATUS; - - flash->read = spi_flash_cmd_read_fast; - flash->write = spi_flash_cmd_write_multi; - flash->erase = spi_flash_cmd_erase; - - return flash; -} - -void spi_flash_free(struct spi_flash *flash) -{ - spi_free_slave(flash->spi); - free(flash); -} diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c deleted file mode 100644 index 256867c..0000000 --- a/drivers/mtd/spi/sst.c +++ /dev/null @@ -1,238 +0,0 @@ -/* - * Driver for SST serial flashes - * - * (C) Copyright 2000-2002 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * Copyright 2008, Network Appliance Inc. - * Jason McMullan <mcmullan@netapp.com> - * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. - * TsiChung Liew (Tsi-Chung.Liew@freescale.com) - * Copyright (c) 2008-2009 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#include <common.h> -#include <malloc.h> -#include <spi_flash.h> - -#include "spi_flash_internal.h" - -#define CMD_SST_BP 0x02 /* Byte Program */ -#define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */ - -#define SST_SR_WIP (1 << 0) /* Write-in-Progress */ -#define SST_SR_WEL (1 << 1) /* Write enable */ -#define SST_SR_BP0 (1 << 2) /* Block Protection 0 */ -#define SST_SR_BP1 (1 << 3) /* Block Protection 1 */ -#define SST_SR_BP2 (1 << 4) /* Block Protection 2 */ -#define SST_SR_AAI (1 << 6) /* Addressing mode */ -#define SST_SR_BPL (1 << 7) /* BP bits lock */ - -#define SST_FEAT_WP (1 << 0) /* Supports AAI word program */ -#define SST_FEAT_MBP (1 << 1) /* Supports multibyte program */ - -struct sst_spi_flash_params { - u8 idcode1; - u8 flags; - u16 nr_sectors; - const char *name; -}; - -struct sst_spi_flash { - struct spi_flash flash; - const struct sst_spi_flash_params *params; -}; - -static const struct sst_spi_flash_params sst_spi_flash_table[] = { - { - .idcode1 = 0x8d, - .flags = SST_FEAT_WP, - .nr_sectors = 128, - .name = "SST25VF040B", - }, - { - .idcode1 = 0x8e, - .flags = SST_FEAT_WP, - .nr_sectors = 256, - .name = "SST25VF080B", - }, - { - .idcode1 = 0x41, - .flags = SST_FEAT_WP, - .nr_sectors = 512, - .name = "SST25VF016B", - }, - { - .idcode1 = 0x4a, - .flags = SST_FEAT_WP, - .nr_sectors = 1024, - .name = "SST25VF032B", - }, - { - .idcode1 = 0x4b, - .flags = SST_FEAT_MBP, - .nr_sectors = 2048, - .name = "SST25VF064C", - }, - { - .idcode1 = 0x01, - .flags = SST_FEAT_WP, - .nr_sectors = 16, - .name = "SST25WF512", - }, - { - .idcode1 = 0x02, - .flags = SST_FEAT_WP, - .nr_sectors = 32, - .name = "SST25WF010", - }, - { - .idcode1 = 0x03, - .flags = SST_FEAT_WP, - .nr_sectors = 64, - .name = "SST25WF020", - }, - { - .idcode1 = 0x04, - .flags = SST_FEAT_WP, - .nr_sectors = 128, - .name = "SST25WF040", - }, - { - .idcode1 = 0x05, - .flags = SST_FEAT_WP, - .nr_sectors = 256, - .name = "SST25WF080", - }, -}; - -static int -sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf) -{ - int ret; - u8 cmd[4] = { - CMD_SST_BP, - offset >> 16, - offset >> 8, - offset, - }; - - debug("BP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n", - spi_w8r8(flash->spi, CMD_READ_STATUS), buf, cmd[0], offset); - - ret = spi_flash_cmd_write_enable(flash); - if (ret) - return ret; - - ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), buf, 1); - if (ret) - return ret; - - return spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); -} - -static int -sst_write_wp(struct spi_flash *flash, u32 offset, size_t len, const void *buf) -{ - size_t actual, cmd_len; - int ret; - u8 cmd[4]; - - ret = spi_claim_bus(flash->spi); - if (ret) { - debug("SF: Unable to claim SPI bus\n"); - return ret; - } - - /* If the data is not word aligned, write out leading single byte */ - actual = offset % 2; - if (actual) { - ret = sst_byte_write(flash, offset, buf); - if (ret) - goto done; - } - offset += actual; - - ret = spi_flash_cmd_write_enable(flash); - if (ret) - goto done; - - cmd_len = 4; - cmd[0] = CMD_SST_AAI_WP; - cmd[1] = offset >> 16; - cmd[2] = offset >> 8; - cmd[3] = offset; - - for (; actual < len - 1; actual += 2) { - debug("WP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n", - spi_w8r8(flash->spi, CMD_READ_STATUS), buf + actual, - cmd[0], offset); - - ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len, - buf + actual, 2); - if (ret) { - debug("SF: sst word program failed\n"); - break; - } - - ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); - if (ret) - break; - - cmd_len = 1; - offset += 2; - } - - if (!ret) - ret = spi_flash_cmd_write_disable(flash); - - /* If there is a single trailing byte, write it out */ - if (!ret && actual != len) - ret = sst_byte_write(flash, offset, buf + actual); - - done: - debug("SF: sst: program %s %zu bytes @ 0x%zx\n", - ret ? "failure" : "success", len, offset - actual); - - spi_release_bus(flash->spi); - return ret; -} - -struct spi_flash * -spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode) -{ - const struct sst_spi_flash_params *params; - struct sst_spi_flash *stm; - size_t i; - - for (i = 0; i < ARRAY_SIZE(sst_spi_flash_table); ++i) { - params = &sst_spi_flash_table[i]; - if (params->idcode1 == idcode[2]) - break; - } - - if (i == ARRAY_SIZE(sst_spi_flash_table)) { - debug("SF: Unsupported SST ID %02x\n", idcode[1]); - return NULL; - } - - stm = spi_flash_alloc(struct sst_spi_flash, spi, params->name); - if (!stm) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - - stm->params = params; - - if (stm->params->flags & SST_FEAT_WP) - stm->flash.write = sst_write_wp; - stm->flash.page_size = 256; - stm->flash.sector_size = 4096; - stm->flash.size = stm->flash.sector_size * params->nr_sectors; - - /* Flash powers up read-only, so clear BP# bits */ - spi_flash_cmd_write_status(&stm->flash, 0); - - return &stm->flash; -} diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c deleted file mode 100644 index c5fa64e..0000000 --- a/drivers/mtd/spi/stmicro.c +++ /dev/null @@ -1,202 +0,0 @@ -/* - * (C) Copyright 2000-2002 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Copyright 2008, Network Appliance Inc. - * Jason McMullan <mcmullan@netapp.com> - * - * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. - * TsiChung Liew (Tsi-Chung.Liew@freescale.com) - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <malloc.h> -#include <spi_flash.h> - -#include "spi_flash_internal.h" - -/* M25Pxx-specific commands */ -#define CMD_M25PXX_RES 0xab /* Release from DP, and Read Signature */ - -struct stmicro_spi_flash_params { - u16 id; - u16 pages_per_sector; - u16 nr_sectors; - const char *name; -}; - -static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = { - { - .id = 0x2011, - .pages_per_sector = 128, - .nr_sectors = 4, - .name = "M25P10", - }, - { - .id = 0x2015, - .pages_per_sector = 256, - .nr_sectors = 32, - .name = "M25P16", - }, - { - .id = 0x2012, - .pages_per_sector = 256, - .nr_sectors = 4, - .name = "M25P20", - }, - { - .id = 0x2016, - .pages_per_sector = 256, - .nr_sectors = 64, - .name = "M25P32", - }, - { - .id = 0x2013, - .pages_per_sector = 256, - .nr_sectors = 8, - .name = "M25P40", - }, - { - .id = 0x2017, - .pages_per_sector = 256, - .nr_sectors = 128, - .name = "M25P64", - }, - { - .id = 0x2014, - .pages_per_sector = 256, - .nr_sectors = 16, - .name = "M25P80", - }, - { - .id = 0x2018, - .pages_per_sector = 1024, - .nr_sectors = 64, - .name = "M25P128", - }, - { - .id = 0xba16, - .pages_per_sector = 256, - .nr_sectors = 64, - .name = "N25Q32", - }, - { - .id = 0xbb16, - .pages_per_sector = 256, - .nr_sectors = 64, - .name = "N25Q32A", - }, - { - .id = 0xba17, - .pages_per_sector = 256, - .nr_sectors = 128, - .name = "N25Q064", - }, - { - .id = 0xbb17, - .pages_per_sector = 256, - .nr_sectors = 128, - .name = "N25Q64A", - }, - { - .id = 0xba18, - .pages_per_sector = 256, - .nr_sectors = 256, - .name = "N25Q128", - }, - { - .id = 0xbb18, - .pages_per_sector = 256, - .nr_sectors = 256, - .name = "N25Q128A", - }, - { - .id = 0xba19, - .pages_per_sector = 256, - .nr_sectors = 512, - .name = "N25Q256", - }, - { - .id = 0xbb19, - .pages_per_sector = 256, - .nr_sectors = 512, - .name = "N25Q256A", - }, - { - .id = 0xba20, - .pages_per_sector = 256, - .nr_sectors = 1024, - .name = "N25Q512", - }, - { - .id = 0xbb20, - .pages_per_sector = 256, - .nr_sectors = 1024, - .name = "N25Q512A", - }, - { - .id = 0xba21, - .pages_per_sector = 256, - .nr_sectors = 2048, - .name = "N25Q1024", - }, - { - .id = 0xbb21, - .pages_per_sector = 256, - .nr_sectors = 2048, - .name = "N25Q1024A", - }, -}; - -struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode) -{ - const struct stmicro_spi_flash_params *params; - struct spi_flash *flash; - unsigned int i; - u16 id; - - if (idcode[0] == 0xff) { - i = spi_flash_cmd(spi, CMD_M25PXX_RES, - idcode, 4); - if (i) - return NULL; - if ((idcode[3] & 0xf0) == 0x10) { - idcode[0] = 0x20; - idcode[1] = 0x20; - idcode[2] = idcode[3] + 1; - } else { - return NULL; - } - } - - id = ((idcode[1] << 8) | idcode[2]); - - for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) { - params = &stmicro_spi_flash_table[i]; - if (params->id == id) - break; - } - - if (i == ARRAY_SIZE(stmicro_spi_flash_table)) { - debug("SF: Unsupported STMicro ID %04x\n", id); - return NULL; - } - - flash = spi_flash_alloc_base(spi, params->name); - if (!flash) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - - flash->page_size = 256; - flash->sector_size = 256 * params->pages_per_sector; - flash->size = flash->sector_size * params->nr_sectors; - - /* for >= 512MiB flashes, use flag status instead of read_status */ - if (flash->size >= 0x4000000) - flash->poll_cmd = CMD_FLAG_STATUS; - - return flash; -} diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c deleted file mode 100644 index b31911a..0000000 --- a/drivers/mtd/spi/winbond.c +++ /dev/null @@ -1,141 +0,0 @@ -/* - * Copyright 2008, Network Appliance Inc. - * Author: Jason McMullan <mcmullan <at> netapp.com> - * Licensed under the GPL-2 or later. - */ - -#include <common.h> -#include <malloc.h> -#include <spi_flash.h> - -#include "spi_flash_internal.h" - -struct winbond_spi_flash_params { - uint16_t id; - uint16_t nr_blocks; - const char *name; -}; - -static const struct winbond_spi_flash_params winbond_spi_flash_table[] = { - { - .id = 0x2014, - .nr_blocks = 16, - .name = "W25P80", - }, - { - .id = 0x2015, - .nr_blocks = 32, - .name = "W25P16", - }, - { - .id = 0x2016, - .nr_blocks = 64, - .name = "W25P32", - }, - { - .id = 0x3013, - .nr_blocks = 8, - .name = "W25X40", - }, - { - .id = 0x3015, - .nr_blocks = 32, - .name = "W25X16", - }, - { - .id = 0x3016, - .nr_blocks = 64, - .name = "W25X32", - }, - { - .id = 0x3017, - .nr_blocks = 128, - .name = "W25X64", - }, - { - .id = 0x4014, - .nr_blocks = 16, - .name = "W25Q80BL/W25Q80BV", - }, - { - .id = 0x4015, - .nr_blocks = 32, - .name = "W25Q16CL/W25Q16DV", - }, - { - .id = 0x4016, - .nr_blocks = 64, - .name = "W25Q32BV/W25Q32FV_SPI", - }, - { - .id = 0x4017, - .nr_blocks = 128, - .name = "W25Q64CV/W25Q64FV_SPI", - }, - { - .id = 0x4018, - .nr_blocks = 256, - .name = "W25Q128BV/W25Q128FV_SPI", - }, - { - .id = 0x4019, - .nr_blocks = 512, - .name = "W25Q256", - }, - { - .id = 0x5014, - .nr_blocks = 16, - .name = "W25Q80BW", - }, - { - .id = 0x6015, - .nr_blocks = 32, - .name = "W25Q16DW", - }, - { - .id = 0x6016, - .nr_blocks = 64, - .name = "W25Q32DW/W25Q32FV_QPI", - }, - { - .id = 0x6017, - .nr_blocks = 128, - .name = "W25Q64DW/W25Q64FV_QPI", - }, - { - .id = 0x6018, - .nr_blocks = 256, - .name = "W25Q128FW/W25Q128FV_QPI", - }, -}; - -struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode) -{ - const struct winbond_spi_flash_params *params; - struct spi_flash *flash; - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(winbond_spi_flash_table); i++) { - params = &winbond_spi_flash_table[i]; - if (params->id == ((idcode[1] << 8) | idcode[2])) - break; - } - - if (i == ARRAY_SIZE(winbond_spi_flash_table)) { - debug("SF: Unsupported Winbond ID %02x%02x\n", - idcode[1], idcode[2]); - return NULL; - } - - flash = spi_flash_alloc_base(spi, params->name); - if (!flash) { - debug("SF: Failed to allocate memory\n"); - return NULL; - } - - flash->page_size = 256; - flash->sector_size = (idcode[1] == 0x20) ? 65536 : 4096; - flash->size = 4096 * 16 * params->nr_blocks; - - return flash; -} diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index 91d24ce..e5941b0 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -38,6 +38,7 @@ COBJS-$(CONFIG_FDT_SPI) += fdt_spi.o COBJS-$(CONFIG_TEGRA20_SFLASH) += tegra20_sflash.o COBJS-$(CONFIG_TEGRA20_SLINK) += tegra20_slink.o COBJS-$(CONFIG_TEGRA114_SPI) += tegra114_spi.o +COBJS-$(CONFIG_TI_QSPI) += ti_qspi.o COBJS-$(CONFIG_XILINX_SPI) += xilinx_spi.o COBJS-$(CONFIG_ZYNQ_SPI) += zynq_spi.o diff --git a/drivers/spi/exynos_spi.c b/drivers/spi/exynos_spi.c index efc8b1e..699c57e 100644 --- a/drivers/spi/exynos_spi.c +++ b/drivers/spi/exynos_spi.c @@ -26,6 +26,7 @@ struct spi_bus { struct exynos_spi *regs; int inited; /* 1 if this bus is ready for use */ int node; + uint deactivate_delay_us; /* Delay to wait after deactivate */ }; /* A list of spi buses that we know about */ @@ -40,6 +41,8 @@ struct exynos_spi_slave { enum periph_id periph_id; /* Peripheral ID for this device */ unsigned int fifo_size; int skip_preamble; + struct spi_bus *bus; /* Pointer to our SPI bus info */ + ulong last_transaction_us; /* Time of last transaction end */ }; static struct spi_bus *spi_get_bus(unsigned dev_index) @@ -85,6 +88,7 @@ struct spi_slave *spi_setup_slave(unsigned int busnum, unsigned int cs, } bus = &spi_bus[busnum]; + spi_slave->bus = bus; spi_slave->regs = bus->regs; spi_slave->mode = mode; spi_slave->periph_id = bus->periph_id; @@ -95,6 +99,7 @@ struct spi_slave *spi_setup_slave(unsigned int busnum, unsigned int cs, spi_slave->fifo_size = 256; spi_slave->skip_preamble = 0; + spi_slave->last_transaction_us = timer_get_us(); spi_slave->freq = bus->frequency; if (max_hz) @@ -199,12 +204,29 @@ static void spi_get_fifo_levels(struct exynos_spi *regs, * * @param regs SPI peripheral registers * @param count Number of bytes to transfer + * @param step Number of bytes to transfer in each packet (1 or 4) */ -static void spi_request_bytes(struct exynos_spi *regs, int count) +static void spi_request_bytes(struct exynos_spi *regs, int count, int step) { + /* For word address we need to swap bytes */ + if (step == 4) { + setbits_le32(®s->mode_cfg, + SPI_MODE_CH_WIDTH_WORD | SPI_MODE_BUS_WIDTH_WORD); + count /= 4; + setbits_le32(®s->swap_cfg, SPI_TX_SWAP_EN | SPI_RX_SWAP_EN | + SPI_TX_BYTE_SWAP | SPI_RX_BYTE_SWAP | + SPI_TX_HWORD_SWAP | SPI_RX_HWORD_SWAP); + } else { + /* Select byte access and clear the swap configuration */ + clrbits_le32(®s->mode_cfg, + SPI_MODE_CH_WIDTH_WORD | SPI_MODE_BUS_WIDTH_WORD); + writel(0, ®s->swap_cfg); + } + assert(count && count < (1 << 16)); setbits_le32(®s->ch_cfg, SPI_CH_RST); clrbits_le32(®s->ch_cfg, SPI_CH_RST); + writel(count | SPI_PACKET_CNT_EN, ®s->pkt_cnt); } @@ -219,6 +241,7 @@ static int spi_rx_tx(struct exynos_spi_slave *spi_slave, int todo, int toread; unsigned start = get_timer(0); int stopping; + int step; out_bytes = in_bytes = todo; @@ -226,10 +249,19 @@ static int spi_rx_tx(struct exynos_spi_slave *spi_slave, int todo, !(spi_slave->mode & SPI_SLAVE); /* + * Try to transfer words if we can. This helps read performance at + * SPI clock speeds above about 20MHz. + */ + step = 1; + if (!((todo | (uintptr_t)rxp | (uintptr_t)txp) & 3) && + !spi_slave->skip_preamble) + step = 4; + + /* * If there's something to send, do a software reset and set a * transaction size. */ - spi_request_bytes(regs, todo); + spi_request_bytes(regs, todo, step); /* * Bytes are transmitted/received in pairs. Wait to receive all the @@ -242,24 +274,42 @@ static int spi_rx_tx(struct exynos_spi_slave *spi_slave, int todo, /* Keep the fifos full/empty. */ spi_get_fifo_levels(regs, &rx_lvl, &tx_lvl); - if (tx_lvl < spi_slave->fifo_size && out_bytes) { - temp = txp ? *txp++ : 0xff; + + /* + * Don't completely fill the txfifo, since we don't want our + * rxfifo to overflow, and it may already contain data. + */ + while (tx_lvl < spi_slave->fifo_size/2 && out_bytes) { + if (!txp) + temp = -1; + else if (step == 4) + temp = *(uint32_t *)txp; + else + temp = *txp; writel(temp, ®s->tx_data); - out_bytes--; + out_bytes -= step; + if (txp) + txp += step; + tx_lvl += step; } - if (rx_lvl > 0) { - temp = readl(®s->rx_data); - if (spi_slave->skip_preamble) { - if (temp == SPI_PREAMBLE_END_BYTE) { - spi_slave->skip_preamble = 0; - stopping = 0; + if (rx_lvl >= step) { + while (rx_lvl >= step) { + temp = readl(®s->rx_data); + if (spi_slave->skip_preamble) { + if (temp == SPI_PREAMBLE_END_BYTE) { + spi_slave->skip_preamble = 0; + stopping = 0; + } + } else { + if (rxp || stopping) { + *rxp = temp; + rxp += step; + } + in_bytes -= step; } - } else { - if (rxp || stopping) - *rxp++ = temp; - in_bytes--; + toread -= step; + rx_lvl -= step; } - toread--; } else if (!toread) { /* * We have run out of input data, but haven't read @@ -271,7 +321,7 @@ static int spi_rx_tx(struct exynos_spi_slave *spi_slave, int todo, out_bytes = in_bytes; toread = in_bytes; txp = NULL; - spi_request_bytes(regs, toread); + spi_request_bytes(regs, toread, step); } if (spi_slave->skip_preamble && get_timer(start) > 100) { printf("SPI timeout: in_bytes=%d, out_bytes=%d, ", @@ -315,10 +365,14 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, if ((flags & SPI_XFER_BEGIN)) spi_cs_activate(slave); - /* Exynos SPI limits each transfer to 65535 bytes */ + /* + * Exynos SPI limits each transfer to 65535 transfers. To keep + * things simple, allow a maximum of 65532 bytes. We could allow + * more in word mode, but the performance difference is small. + */ bytelen = bitlen / 8; for (upto = 0; !ret && upto < bytelen; upto += todo) { - todo = min(bytelen - upto, (1 << 16) - 1); + todo = min(bytelen - upto, (1 << 16) - 4); ret = spi_rx_tx(spi_slave, todo, &din, &dout, flags); if (ret) break; @@ -359,9 +413,22 @@ void spi_cs_activate(struct spi_slave *slave) { struct exynos_spi_slave *spi_slave = to_exynos_spi(slave); + /* If it's too soon to do another transaction, wait */ + if (spi_slave->bus->deactivate_delay_us && + spi_slave->last_transaction_us) { + ulong delay_us; /* The delay completed so far */ + delay_us = timer_get_us() - spi_slave->last_transaction_us; + if (delay_us < spi_slave->bus->deactivate_delay_us) + udelay(spi_slave->bus->deactivate_delay_us - delay_us); + } + clrbits_le32(&spi_slave->regs->cs_reg, SPI_SLAVE_SIG_INACT); debug("Activate CS, bus %d\n", spi_slave->slave.bus); spi_slave->skip_preamble = spi_slave->mode & SPI_PREAMBLE; + + /* Remember time of this transaction so we can honour the bus delay */ + if (spi_slave->bus->deactivate_delay_us) + spi_slave->last_transaction_us = timer_get_us(); } /** @@ -411,6 +478,8 @@ static int spi_get_config(const void *blob, int node, struct spi_bus *bus) /* Use 500KHz as a suitable default */ bus->frequency = fdtdec_get_int(blob, node, "spi-max-frequency", 500000); + bus->deactivate_delay_us = fdtdec_get_int(blob, node, + "spi-deactivate-delay", 0); return 0; } diff --git a/drivers/spi/ti_qspi.c b/drivers/spi/ti_qspi.c new file mode 100644 index 0000000..5a5b482 --- /dev/null +++ b/drivers/spi/ti_qspi.c @@ -0,0 +1,311 @@ +/* + * TI QSPI driver + * + * Copyright (C) 2013, Texas Instruments, Incorporated + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/omap.h> +#include <malloc.h> +#include <spi.h> + +/* ti qpsi register bit masks */ +#define QSPI_TIMEOUT 2000000 +#define QSPI_FCLK 192000000 +/* clock control */ +#define QSPI_CLK_EN (1 << 31) +#define QSPI_CLK_DIV_MAX 0xffff +/* command */ +#define QSPI_EN_CS(n) (n << 28) +#define QSPI_WLEN(n) ((n-1) << 19) +#define QSPI_3_PIN (1 << 18) +#define QSPI_RD_SNGL (1 << 16) +#define QSPI_WR_SNGL (2 << 16) +#define QSPI_INVAL (4 << 16) +#define QSPI_RD_QUAD (7 << 16) +/* device control */ +#define QSPI_DD(m, n) (m << (3 + n*8)) +#define QSPI_CKPHA(n) (1 << (2 + n*8)) +#define QSPI_CSPOL(n) (1 << (1 + n*8)) +#define QSPI_CKPOL(n) (1 << (n*8)) +/* status */ +#define QSPI_WC (1 << 1) +#define QSPI_BUSY (1 << 0) +#define QSPI_WC_BUSY (QSPI_WC | QSPI_BUSY) +#define QSPI_XFER_DONE QSPI_WC +#define MM_SWITCH 0x01 +#define MEM_CS 0x100 +#define MEM_CS_UNSELECT 0xfffff0ff +#define MMAP_START_ADDR 0x5c000000 +#define CORE_CTRL_IO 0x4a002558 + +#define QSPI_CMD_READ (0x3 << 0) +#define QSPI_CMD_READ_QUAD (0x6b << 0) +#define QSPI_CMD_READ_FAST (0x0b << 0) +#define QSPI_SETUP0_NUM_A_BYTES (0x2 << 8) +#define QSPI_SETUP0_NUM_D_BYTES_NO_BITS (0x0 << 10) +#define QSPI_SETUP0_NUM_D_BYTES_8_BITS (0x1 << 10) +#define QSPI_SETUP0_READ_NORMAL (0x0 << 12) +#define QSPI_SETUP0_READ_QUAD (0x3 << 12) +#define QSPI_CMD_WRITE (0x2 << 16) +#define QSPI_NUM_DUMMY_BITS (0x0 << 24) + +/* ti qspi register set */ +struct ti_qspi_regs { + u32 pid; + u32 pad0[3]; + u32 sysconfig; + u32 pad1[3]; + u32 int_stat_raw; + u32 int_stat_en; + u32 int_en_set; + u32 int_en_ctlr; + u32 intc_eoi; + u32 pad2[3]; + u32 clk_ctrl; + u32 dc; + u32 cmd; + u32 status; + u32 data; + u32 setup0; + u32 setup1; + u32 setup2; + u32 setup3; + u32 memswitch; + u32 data1; + u32 data2; + u32 data3; +}; + +/* ti qspi slave */ +struct ti_qspi_slave { + struct spi_slave slave; + struct ti_qspi_regs *base; + unsigned int mode; + u32 cmd; + u32 dc; +}; + +static inline struct ti_qspi_slave *to_ti_qspi_slave(struct spi_slave *slave) +{ + return container_of(slave, struct ti_qspi_slave, slave); +} + +static void ti_spi_setup_spi_register(struct ti_qspi_slave *qslave) +{ + struct spi_slave *slave = &qslave->slave; + u32 memval = 0; + + slave->memory_map = (void *)MMAP_START_ADDR; + + memval |= QSPI_CMD_READ | QSPI_SETUP0_NUM_A_BYTES | + QSPI_SETUP0_NUM_D_BYTES_NO_BITS | + QSPI_SETUP0_READ_NORMAL | QSPI_CMD_WRITE | + QSPI_NUM_DUMMY_BITS; + + writel(memval, &qslave->base->setup0); +} + +static void ti_spi_set_speed(struct spi_slave *slave, uint hz) +{ + struct ti_qspi_slave *qslave = to_ti_qspi_slave(slave); + uint clk_div; + + debug("ti_spi_set_speed: hz: %d, clock divider %d\n", hz, clk_div); + + if (!hz) + clk_div = 0; + else + clk_div = (QSPI_FCLK / hz) - 1; + + /* disable SCLK */ + writel(readl(&qslave->base->clk_ctrl) & ~QSPI_CLK_EN, + &qslave->base->clk_ctrl); + + /* assign clk_div values */ + if (clk_div < 0) + clk_div = 0; + else if (clk_div > QSPI_CLK_DIV_MAX) + clk_div = QSPI_CLK_DIV_MAX; + + /* enable SCLK */ + writel(QSPI_CLK_EN | clk_div, &qslave->base->clk_ctrl); +} + +int spi_cs_is_valid(unsigned int bus, unsigned int cs) +{ + return 1; +} + +void spi_cs_activate(struct spi_slave *slave) +{ + /* CS handled in xfer */ + return; +} + +void spi_cs_deactivate(struct spi_slave *slave) +{ + struct ti_qspi_slave *qslave = to_ti_qspi_slave(slave); + + debug("spi_cs_deactivate: 0x%08x\n", (u32)slave); + + writel(qslave->cmd | QSPI_INVAL, &qslave->base->cmd); +} + +void spi_init(void) +{ + /* nothing to do */ +} + +struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int mode) +{ + struct ti_qspi_slave *qslave; + + qslave = spi_alloc_slave(struct ti_qspi_slave, bus, cs); + if (!qslave) { + printf("SPI_error: Fail to allocate ti_qspi_slave\n"); + return NULL; + } + + qslave->base = (struct ti_qspi_regs *)QSPI_BASE; + qslave->mode = mode; + + ti_spi_set_speed(&qslave->slave, max_hz); + +#ifdef CONFIG_TI_SPI_MMAP + ti_spi_setup_spi_register(qslave); +#endif + + return &qslave->slave; +} + +void spi_free_slave(struct spi_slave *slave) +{ + struct ti_qspi_slave *qslave = to_ti_qspi_slave(slave); + free(qslave); +} + +int spi_claim_bus(struct spi_slave *slave) +{ + struct ti_qspi_slave *qslave = to_ti_qspi_slave(slave); + + debug("spi_claim_bus: bus:%i cs:%i\n", slave->bus, slave->cs); + + qslave->dc = 0; + if (qslave->mode & SPI_CPHA) + qslave->dc |= QSPI_CKPHA(slave->cs); + if (qslave->mode & SPI_CPOL) + qslave->dc |= QSPI_CKPOL(slave->cs); + if (qslave->mode & SPI_CS_HIGH) + qslave->dc |= QSPI_CSPOL(slave->cs); + + writel(qslave->dc, &qslave->base->dc); + writel(0, &qslave->base->cmd); + writel(0, &qslave->base->data); + + return 0; +} + +void spi_release_bus(struct spi_slave *slave) +{ + struct ti_qspi_slave *qslave = to_ti_qspi_slave(slave); + + debug("spi_release_bus: bus:%i cs:%i\n", slave->bus, slave->cs); + + writel(0, &qslave->base->dc); + writel(0, &qslave->base->cmd); + writel(0, &qslave->base->data); +} + +int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, + void *din, unsigned long flags) +{ + struct ti_qspi_slave *qslave = to_ti_qspi_slave(slave); + uint words = bitlen >> 3; /* fixed 8-bit word length */ + const uchar *txp = dout; + uchar *rxp = din; + uint status; + int timeout, val; + + debug("spi_xfer: bus:%i cs:%i bitlen:%i words:%i flags:%lx\n", + slave->bus, slave->cs, bitlen, words, flags); + + /* Setup mmap flags */ + if (flags & SPI_XFER_MMAP) { + writel(MM_SWITCH, &qslave->base->memswitch); + val = readl(CORE_CTRL_IO); + val |= MEM_CS; + writel(val, CORE_CTRL_IO); + return 0; + } else if (flags & SPI_XFER_MMAP_END) { + writel(~MM_SWITCH, &qslave->base->memswitch); + val = readl(CORE_CTRL_IO); + val &= MEM_CS_UNSELECT; + writel(val, CORE_CTRL_IO); + return 0; + } + + if (bitlen == 0) + return -1; + + if (bitlen % 8) { + debug("spi_xfer: Non byte aligned SPI transfer\n"); + return -1; + } + + /* Setup command reg */ + qslave->cmd = 0; + qslave->cmd |= QSPI_WLEN(8); + qslave->cmd |= QSPI_EN_CS(slave->cs); + if (flags & SPI_3WIRE) + qslave->cmd |= QSPI_3_PIN; + qslave->cmd |= 0xfff; + + while (words--) { + if (txp) { + debug("tx cmd %08x dc %08x data %02x\n", + qslave->cmd | QSPI_WR_SNGL, qslave->dc, *txp); + writel(*txp++, &qslave->base->data); + writel(qslave->cmd | QSPI_WR_SNGL, + &qslave->base->cmd); + status = readl(&qslave->base->status); + timeout = QSPI_TIMEOUT; + while ((status & QSPI_WC_BUSY) != QSPI_XFER_DONE) { + if (--timeout < 0) { + printf("spi_xfer: TX timeout!\n"); + return -1; + } + status = readl(&qslave->base->status); + } + debug("tx done, status %08x\n", status); + } + if (rxp) { + qslave->cmd |= QSPI_RD_SNGL; + debug("rx cmd %08x dc %08x\n", + qslave->cmd, qslave->dc); + writel(qslave->cmd, &qslave->base->cmd); + status = readl(&qslave->base->status); + timeout = QSPI_TIMEOUT; + while ((status & QSPI_WC_BUSY) != QSPI_XFER_DONE) { + if (--timeout < 0) { + printf("spi_xfer: RX timeout!\n"); + return -1; + } + status = readl(&qslave->base->status); + } + *rxp++ = readl(&qslave->base->data); + debug("rx done, status %08x, read %02x\n", + status, *(rxp-1)); + } + } + + /* Terminate frame */ + if (flags & SPI_XFER_END) + spi_cs_deactivate(slave); + + return 0; +} |