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Diffstat (limited to 'drivers/mtd/spi/sst.c')
-rw-r--r--drivers/mtd/spi/sst.c238
1 files changed, 0 insertions, 238 deletions
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;
-}