From 66948c25bb7d90d561c1b8be3d69696ef649358f Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Wed, 4 Jun 2014 10:26:53 +0900 Subject: nand_spl: remove nand_spl infrastructure Remove the common infrastructure of nand_spl and clean-up the code inside ifdef(CONFIG_NAND_U_BOOT)..endif. Signed-off-by: Masahiro Yamada --- nand_spl/nand_boot.c | 285 --------------------------------------------------- 1 file changed, 285 deletions(-) delete mode 100644 nand_spl/nand_boot.c (limited to 'nand_spl/nand_boot.c') diff --git a/nand_spl/nand_boot.c b/nand_spl/nand_boot.c deleted file mode 100644 index 125e7f3..0000000 --- a/nand_spl/nand_boot.c +++ /dev/null @@ -1,285 +0,0 @@ -/* - * (C) Copyright 2006-2008 - * Stefan Roese, DENX Software Engineering, sr@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include - -static int nand_ecc_pos[] = CONFIG_SYS_NAND_ECCPOS; - -#define ECCSTEPS (CONFIG_SYS_NAND_PAGE_SIZE / \ - CONFIG_SYS_NAND_ECCSIZE) -#define ECCTOTAL (ECCSTEPS * CONFIG_SYS_NAND_ECCBYTES) - - -#if (CONFIG_SYS_NAND_PAGE_SIZE <= 512) -/* - * NAND command for small page NAND devices (512) - */ -static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8 cmd) -{ - struct nand_chip *this = mtd->priv; - int page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT; - - while (!this->dev_ready(mtd)) - ; - - /* Begin command latch cycle */ - this->cmd_ctrl(mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE); - /* Set ALE and clear CLE to start address cycle */ - /* Column address */ - this->cmd_ctrl(mtd, offs, NAND_CTRL_ALE | NAND_CTRL_CHANGE); - this->cmd_ctrl(mtd, page_addr & 0xff, NAND_CTRL_ALE); /* A[16:9] */ - this->cmd_ctrl(mtd, (page_addr >> 8) & 0xff, - NAND_CTRL_ALE); /* A[24:17] */ -#ifdef CONFIG_SYS_NAND_4_ADDR_CYCLE - /* One more address cycle for devices > 32MiB */ - this->cmd_ctrl(mtd, (page_addr >> 16) & 0x0f, - NAND_CTRL_ALE); /* A[28:25] */ -#endif - /* Latch in address */ - this->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); - - /* - * Wait a while for the data to be ready - */ - while (!this->dev_ready(mtd)) - ; - - return 0; -} -#else -/* - * NAND command for large page NAND devices (2k) - */ -static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8 cmd) -{ - struct nand_chip *this = mtd->priv; - int page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT; - void (*hwctrl)(struct mtd_info *mtd, int cmd, - unsigned int ctrl) = this->cmd_ctrl; - - while (!this->dev_ready(mtd)) - ; - - /* Emulate NAND_CMD_READOOB */ - if (cmd == NAND_CMD_READOOB) { - offs += CONFIG_SYS_NAND_PAGE_SIZE; - cmd = NAND_CMD_READ0; - } - - /* Shift the offset from byte addressing to word addressing. */ - if (this->options & NAND_BUSWIDTH_16) - offs >>= 1; - - /* Begin command latch cycle */ - hwctrl(mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE); - /* Set ALE and clear CLE to start address cycle */ - /* Column address */ - hwctrl(mtd, offs & 0xff, - NAND_CTRL_ALE | NAND_CTRL_CHANGE); /* A[7:0] */ - hwctrl(mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */ - /* Row address */ - hwctrl(mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */ - hwctrl(mtd, ((page_addr >> 8) & 0xff), - NAND_CTRL_ALE); /* A[27:20] */ -#ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE - /* One more address cycle for devices > 128MiB */ - hwctrl(mtd, (page_addr >> 16) & 0x0f, - NAND_CTRL_ALE); /* A[31:28] */ -#endif - /* Latch in address */ - hwctrl(mtd, NAND_CMD_READSTART, - NAND_CTRL_CLE | NAND_CTRL_CHANGE); - hwctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); - - /* - * Wait a while for the data to be ready - */ - while (!this->dev_ready(mtd)) - ; - - return 0; -} -#endif - -static int nand_is_bad_block(struct mtd_info *mtd, int block) -{ - struct nand_chip *this = mtd->priv; - - nand_command(mtd, block, 0, CONFIG_SYS_NAND_BAD_BLOCK_POS, NAND_CMD_READOOB); - - /* - * Read one byte (or two if it's a 16 bit chip). - */ - if (this->options & NAND_BUSWIDTH_16) { - if (readw(this->IO_ADDR_R) != 0xffff) - return 1; - } else { - if (readb(this->IO_ADDR_R) != 0xff) - return 1; - } - - return 0; -} - -#if defined(CONFIG_SYS_NAND_4BIT_HW_ECC_OOBFIRST) -static int nand_read_page(struct mtd_info *mtd, int block, int page, uchar *dst) -{ - struct nand_chip *this = mtd->priv; - u_char ecc_calc[ECCTOTAL]; - u_char ecc_code[ECCTOTAL]; - u_char oob_data[CONFIG_SYS_NAND_OOBSIZE]; - int i; - int eccsize = CONFIG_SYS_NAND_ECCSIZE; - int eccbytes = CONFIG_SYS_NAND_ECCBYTES; - int eccsteps = ECCSTEPS; - uint8_t *p = dst; - - nand_command(mtd, block, page, 0, NAND_CMD_READOOB); - this->read_buf(mtd, oob_data, CONFIG_SYS_NAND_OOBSIZE); - nand_command(mtd, block, page, 0, NAND_CMD_READ0); - - /* Pick the ECC bytes out of the oob data */ - for (i = 0; i < ECCTOTAL; i++) - ecc_code[i] = oob_data[nand_ecc_pos[i]]; - - - for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { - this->ecc.hwctl(mtd, NAND_ECC_READ); - this->read_buf(mtd, p, eccsize); - this->ecc.calculate(mtd, p, &ecc_calc[i]); - this->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]); - } - - return 0; -} -#else -static int nand_read_page(struct mtd_info *mtd, int block, int page, uchar *dst) -{ - struct nand_chip *this = mtd->priv; - u_char ecc_calc[ECCTOTAL]; - u_char ecc_code[ECCTOTAL]; - u_char oob_data[CONFIG_SYS_NAND_OOBSIZE]; - int i; - int eccsize = CONFIG_SYS_NAND_ECCSIZE; - int eccbytes = CONFIG_SYS_NAND_ECCBYTES; - int eccsteps = ECCSTEPS; - uint8_t *p = dst; - - nand_command(mtd, block, page, 0, NAND_CMD_READ0); - - for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { - this->ecc.hwctl(mtd, NAND_ECC_READ); - this->read_buf(mtd, p, eccsize); - this->ecc.calculate(mtd, p, &ecc_calc[i]); - } - this->read_buf(mtd, oob_data, CONFIG_SYS_NAND_OOBSIZE); - - /* Pick the ECC bytes out of the oob data */ - for (i = 0; i < ECCTOTAL; i++) - ecc_code[i] = oob_data[nand_ecc_pos[i]]; - - eccsteps = ECCSTEPS; - p = dst; - - for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { - /* No chance to do something with the possible error message - * from correct_data(). We just hope that all possible errors - * are corrected by this routine. - */ - this->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]); - } - - return 0; -} -#endif /* #if defined(CONFIG_SYS_NAND_4BIT_HW_ECC_OOBFIRST) */ - -static int nand_load(struct mtd_info *mtd, unsigned int offs, - unsigned int uboot_size, uchar *dst) -{ - unsigned int block, lastblock; - unsigned int page; - - /* - * offs has to be aligned to a page address! - */ - block = offs / CONFIG_SYS_NAND_BLOCK_SIZE; - lastblock = (offs + uboot_size - 1) / CONFIG_SYS_NAND_BLOCK_SIZE; - page = (offs % CONFIG_SYS_NAND_BLOCK_SIZE) / CONFIG_SYS_NAND_PAGE_SIZE; - - while (block <= lastblock) { - if (!nand_is_bad_block(mtd, block)) { - /* - * Skip bad blocks - */ - while (page < CONFIG_SYS_NAND_PAGE_COUNT) { - nand_read_page(mtd, block, page, dst); - dst += CONFIG_SYS_NAND_PAGE_SIZE; - page++; - } - - page = 0; - } else { - lastblock++; - } - - block++; - } - - return 0; -} - -/* - * The main entry for NAND booting. It's necessary that SDRAM is already - * configured and available since this code loads the main U-Boot image - * from NAND into SDRAM and starts it from there. - */ -void nand_boot(void) -{ - struct nand_chip nand_chip; - nand_info_t nand_info; - __attribute__((noreturn)) void (*uboot)(void); - - /* - * Init board specific nand support - */ - nand_chip.select_chip = NULL; - nand_info.priv = &nand_chip; - nand_chip.IO_ADDR_R = nand_chip.IO_ADDR_W = (void __iomem *)CONFIG_SYS_NAND_BASE; - nand_chip.dev_ready = NULL; /* preset to NULL */ - nand_chip.options = 0; - board_nand_init(&nand_chip); - - if (nand_chip.select_chip) - nand_chip.select_chip(&nand_info, 0); - - /* - * Load U-Boot image from NAND into RAM - */ - nand_load(&nand_info, CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE, - (uchar *)CONFIG_SYS_NAND_U_BOOT_DST); - -#ifdef CONFIG_NAND_ENV_DST - nand_load(&nand_info, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, - (uchar *)CONFIG_NAND_ENV_DST); - -#ifdef CONFIG_ENV_OFFSET_REDUND - nand_load(&nand_info, CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE, - (uchar *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE); -#endif -#endif - - if (nand_chip.select_chip) - nand_chip.select_chip(&nand_info, -1); - - /* - * Jump to U-Boot image - */ - uboot = (void *)CONFIG_SYS_NAND_U_BOOT_START; - (*uboot)(); -} -- cgit v1.1