diff options
Diffstat (limited to 'drivers/mtd/nand')
-rw-r--r-- | drivers/mtd/nand/Makefile | 3 | ||||
-rw-r--r-- | drivers/mtd/nand/davinci_nand.c | 289 | ||||
-rw-r--r-- | drivers/mtd/nand/fsl_elbc_nand.c | 4 | ||||
-rw-r--r-- | drivers/mtd/nand/nand_plat.c | 53 | ||||
-rw-r--r-- | drivers/mtd/nand/nand_util.c | 20 |
5 files changed, 106 insertions, 263 deletions
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 71dd5b9..c1325b9 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -42,9 +42,10 @@ COBJS-$(CONFIG_NAND_FSL_ELBC) += fsl_elbc_nand.o COBJS-$(CONFIG_NAND_FSL_UPM) += fsl_upm.o COBJS-$(CONFIG_NAND_MPC5121_NFC) += mpc5121_nfc.o COBJS-$(CONFIG_NAND_NOMADIK) += nomadik.o -COBJS-$(CONFIG_NAND_S3C2410) += s3c2410_nand.c +COBJS-$(CONFIG_NAND_S3C2410) += s3c2410_nand.o COBJS-$(CONFIG_NAND_S3C64XX) += s3c64xx.o COBJS-$(CONFIG_NAND_OMAP_GPMC) += omap_gpmc.o +COBJS-$(CONFIG_NAND_PLAT) += nand_plat.o endif COBJS := $(COBJS-y) diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 8ef18b8..ca40c6a 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -47,7 +47,7 @@ #include <asm/arch/nand_defs.h> #include <asm/arch/emif_defs.h> -extern struct nand_chip nand_dev_desc[CONFIG_SYS_MAX_NAND_DEVICE]; +static emif_registers *const emif_regs = (void *) DAVINCI_ASYNC_EMIF_CNTRL_BASE; static void nand_davinci_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) { @@ -68,81 +68,30 @@ static void nand_davinci_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int c writeb(cmd, this->IO_ADDR_W); } -/* Set WP on deselect, write enable on select */ -static void nand_davinci_select_chip(struct mtd_info *mtd, int chip) -{ -#define GPIO_SET_DATA01 0x01c67018 -#define GPIO_CLR_DATA01 0x01c6701c -#define GPIO_NAND_WP (1 << 4) -#ifdef SONATA_BOARD_GPIOWP - if (chip < 0) { - REG(GPIO_CLR_DATA01) |= GPIO_NAND_WP; - } else { - REG(GPIO_SET_DATA01) |= GPIO_NAND_WP; - } -#endif -} - #ifdef CONFIG_SYS_NAND_HW_ECC -#ifdef CONFIG_SYS_DAVINCI_BROKEN_ECC -/* Linux-compatible ECC uses MTD defaults. */ -/* These layouts are not compatible with Linux or RBL/UBL. */ -#ifdef CONFIG_SYS_NAND_LARGEPAGE -static struct nand_ecclayout davinci_nand_ecclayout = { - .eccbytes = 12, - .eccpos = {8, 9, 10, 24, 25, 26, 40, 41, 42, 56, 57, 58}, - .oobfree = { - {.offset = 2, .length = 6}, - {.offset = 12, .length = 12}, - {.offset = 28, .length = 12}, - {.offset = 44, .length = 12}, - {.offset = 60, .length = 4} - } -}; -#elif defined(CONFIG_SYS_NAND_SMALLPAGE) -static struct nand_ecclayout davinci_nand_ecclayout = { - .eccbytes = 3, - .eccpos = {0, 1, 2}, - .oobfree = { - {.offset = 6, .length = 2}, - {.offset = 8, .length = 8} - } -}; -#else -#error "Either CONFIG_SYS_NAND_LARGEPAGE or CONFIG_SYS_NAND_SMALLPAGE must be defined!" -#endif -#endif /* CONFIG_SYS_DAVINCI_BROKEN_ECC */ static void nand_davinci_enable_hwecc(struct mtd_info *mtd, int mode) { - emifregs emif_addr; int dummy; - emif_addr = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE; + dummy = emif_regs->NANDF1ECC; - dummy = emif_addr->NANDF1ECC; - dummy = emif_addr->NANDF2ECC; - dummy = emif_addr->NANDF3ECC; - dummy = emif_addr->NANDF4ECC; - - emif_addr->NANDFCR |= (1 << 8); + /* FIXME: only chipselect 0 is supported for now */ + emif_regs->NANDFCR |= 1 << 8; } static u_int32_t nand_davinci_readecc(struct mtd_info *mtd, u_int32_t region) { u_int32_t ecc = 0; - emifregs emif_base_addr; - - emif_base_addr = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE; if (region == 1) - ecc = emif_base_addr->NANDF1ECC; + ecc = emif_regs->NANDF1ECC; else if (region == 2) - ecc = emif_base_addr->NANDF2ECC; + ecc = emif_regs->NANDF2ECC; else if (region == 3) - ecc = emif_base_addr->NANDF3ECC; + ecc = emif_regs->NANDF3ECC; else if (region == 4) - ecc = emif_base_addr->NANDF4ECC; + ecc = emif_regs->NANDF4ECC; return(ecc); } @@ -150,29 +99,6 @@ static u_int32_t nand_davinci_readecc(struct mtd_info *mtd, u_int32_t region) static int nand_davinci_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code) { u_int32_t tmp; -#ifdef CONFIG_SYS_DAVINCI_BROKEN_ECC - /* - * This is not how you should read ECCs on large page Davinci devices. - * The region parameter gets you ECCs for flash chips on different chip - * selects, not the 4x512 byte pages in a 2048 byte page. - * - * Preserved for backwards compatibility though. - */ - - int region, n; - struct nand_chip *this = mtd->priv; - - n = (this->ecc.size/512); - - region = 1; - while (n--) { - tmp = nand_davinci_readecc(mtd, region); - *ecc_code++ = tmp; - *ecc_code++ = tmp >> 16; - *ecc_code++ = ((tmp >> 8) & 0x0f) | ((tmp >> 20) & 0xf0); - region++; - } -#else const int region = 1; tmp = nand_davinci_readecc(mtd, region); @@ -187,148 +113,26 @@ static int nand_davinci_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u *ecc_code++ = tmp; *ecc_code++ = tmp >> 8; *ecc_code++ = tmp >> 16; -#endif /* CONFIG_SYS_DAVINCI_BROKEN_ECC */ - return(0); -} - -#ifdef CONFIG_SYS_DAVINCI_BROKEN_ECC -static void nand_davinci_gen_true_ecc(u_int8_t *ecc_buf) -{ - u_int32_t tmp = ecc_buf[0] | (ecc_buf[1] << 16) | ((ecc_buf[2] & 0xf0) << 20) | ((ecc_buf[2] & 0x0f) << 8); - - ecc_buf[0] = ~(P64o(tmp) | P64e(tmp) | P32o(tmp) | P32e(tmp) | P16o(tmp) | P16e(tmp) | P8o(tmp) | P8e(tmp)); - ecc_buf[1] = ~(P1024o(tmp) | P1024e(tmp) | P512o(tmp) | P512e(tmp) | P256o(tmp) | P256e(tmp) | P128o(tmp) | P128e(tmp)); - ecc_buf[2] = ~( P4o(tmp) | P4e(tmp) | P2o(tmp) | P2e(tmp) | P1o(tmp) | P1e(tmp) | P2048o(tmp) | P2048e(tmp)); -} - -static int nand_davinci_compare_ecc(u_int8_t *ecc_nand, u_int8_t *ecc_calc, u_int8_t *page_data) -{ - u_int32_t i; - u_int8_t tmp0_bit[8], tmp1_bit[8], tmp2_bit[8]; - u_int8_t comp0_bit[8], comp1_bit[8], comp2_bit[8]; - u_int8_t ecc_bit[24]; - u_int8_t ecc_sum = 0; - u_int8_t find_bit = 0; - u_int32_t find_byte = 0; - int is_ecc_ff; - - is_ecc_ff = ((*ecc_nand == 0xff) && (*(ecc_nand + 1) == 0xff) && (*(ecc_nand + 2) == 0xff)); - - nand_davinci_gen_true_ecc(ecc_nand); - nand_davinci_gen_true_ecc(ecc_calc); - - for (i = 0; i <= 2; i++) { - *(ecc_nand + i) = ~(*(ecc_nand + i)); - *(ecc_calc + i) = ~(*(ecc_calc + i)); - } - for (i = 0; i < 8; i++) { - tmp0_bit[i] = *ecc_nand % 2; - *ecc_nand = *ecc_nand / 2; - } - - for (i = 0; i < 8; i++) { - tmp1_bit[i] = *(ecc_nand + 1) % 2; - *(ecc_nand + 1) = *(ecc_nand + 1) / 2; - } - - for (i = 0; i < 8; i++) { - tmp2_bit[i] = *(ecc_nand + 2) % 2; - *(ecc_nand + 2) = *(ecc_nand + 2) / 2; - } - - for (i = 0; i < 8; i++) { - comp0_bit[i] = *ecc_calc % 2; - *ecc_calc = *ecc_calc / 2; - } - - for (i = 0; i < 8; i++) { - comp1_bit[i] = *(ecc_calc + 1) % 2; - *(ecc_calc + 1) = *(ecc_calc + 1) / 2; - } - - for (i = 0; i < 8; i++) { - comp2_bit[i] = *(ecc_calc + 2) % 2; - *(ecc_calc + 2) = *(ecc_calc + 2) / 2; - } - - for (i = 0; i< 6; i++) - ecc_bit[i] = tmp2_bit[i + 2] ^ comp2_bit[i + 2]; - - for (i = 0; i < 8; i++) - ecc_bit[i + 6] = tmp0_bit[i] ^ comp0_bit[i]; - - for (i = 0; i < 8; i++) - ecc_bit[i + 14] = tmp1_bit[i] ^ comp1_bit[i]; - - ecc_bit[22] = tmp2_bit[0] ^ comp2_bit[0]; - ecc_bit[23] = tmp2_bit[1] ^ comp2_bit[1]; - - for (i = 0; i < 24; i++) - ecc_sum += ecc_bit[i]; + /* NOTE: the above code matches mainline Linux: + * .PQR.stu ==> ~PQRstu + * + * MontaVista/TI kernels encode those bytes differently, use + * complicated (and allegedly sometimes-wrong) correction code, + * and usually shipped with U-Boot that uses software ECC: + * .PQR.stu ==> PsQRtu + * + * If you need MV/TI compatible NAND I/O in U-Boot, it should + * be possible to (a) change the mangling above, (b) reverse + * that mangling in nand_davinci_correct_data() below. + */ - switch (ecc_sum) { - case 0: - /* Not reached because this function is not called if - ECC values are equal */ - return 0; - case 1: - /* Uncorrectable error */ - MTDDEBUG (MTD_DEBUG_LEVEL0, - "ECC UNCORRECTED_ERROR 1\n"); - return(-1); - case 12: - /* Correctable error */ - find_byte = (ecc_bit[23] << 8) + - (ecc_bit[21] << 7) + - (ecc_bit[19] << 6) + - (ecc_bit[17] << 5) + - (ecc_bit[15] << 4) + - (ecc_bit[13] << 3) + - (ecc_bit[11] << 2) + - (ecc_bit[9] << 1) + - ecc_bit[7]; - - find_bit = (ecc_bit[5] << 2) + (ecc_bit[3] << 1) + ecc_bit[1]; - - MTDDEBUG (MTD_DEBUG_LEVEL0, "Correcting single bit ECC " - "error at offset: %d, bit: %d\n", - find_byte, find_bit); - - page_data[find_byte] ^= (1 << find_bit); - - return(0); - default: - if (is_ecc_ff) { - if (ecc_calc[0] == 0 && ecc_calc[1] == 0 && ecc_calc[2] == 0) - return(0); - } - MTDDEBUG (MTD_DEBUG_LEVEL0, - "UNCORRECTED_ERROR default\n"); - return(-1); - } + return 0; } -#endif /* CONFIG_SYS_DAVINCI_BROKEN_ECC */ static int nand_davinci_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) { struct nand_chip *this = mtd->priv; -#ifdef CONFIG_SYS_DAVINCI_BROKEN_ECC - int block_count = 0, i, rc; - - block_count = (this->ecc.size/512); - for (i = 0; i < block_count; i++) { - if (memcmp(read_ecc, calc_ecc, 3) != 0) { - rc = nand_davinci_compare_ecc(read_ecc, calc_ecc, dat); - if (rc < 0) { - return(rc); - } - } - read_ecc += 3; - calc_ecc += 3; - dat += 512; - } -#else u_int32_t ecc_nand = read_ecc[0] | (read_ecc[1] << 8) | (read_ecc[2] << 16); u_int32_t ecc_calc = calc_ecc[0] | (calc_ecc[1] << 8) | @@ -362,31 +166,24 @@ static int nand_davinci_correct_data(struct mtd_info *mtd, u_char *dat, u_char * return -1; } } -#endif /* CONFIG_SYS_DAVINCI_BROKEN_ECC */ return(0); } #endif /* CONFIG_SYS_NAND_HW_ECC */ static int nand_davinci_dev_ready(struct mtd_info *mtd) { - emifregs emif_addr; - - emif_addr = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE; - - return(emif_addr->NANDFSR & 0x1); -} - -static int nand_davinci_waitfunc(struct mtd_info *mtd, struct nand_chip *this) -{ - while(!nand_davinci_dev_ready(mtd)) {;} - *NAND_CE0CLE = NAND_STATUS; - return(*NAND_CE0DATA); + return emif_regs->NANDFSR & 0x1; } static void nand_flash_init(void) { + /* This is for DM6446 EVM and *very* similar. DO NOT GROW THIS! + * Instead, have your board_init() set EMIF timings, based on its + * knowledge of the clocks and what devices are hooked up ... and + * don't even do that unless no UBL handled it. + */ +#ifdef CONFIG_SOC_DM6446 u_int32_t acfg1 = 0x3ffffffc; - emifregs emif_regs; /*------------------------------------------------------------------* * NAND FLASH CHIP TIMEOUT @ 459 MHz * @@ -408,39 +205,22 @@ static void nand_flash_init(void) | (0 << 0 ) /* asyncSize 8-bit bus */ ; - emif_regs = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE; - emif_regs->AB1CR = acfg1; /* CS2 */ emif_regs->NANDFCR = 0x00000101; /* NAND flash on CS2 */ +#endif } -int board_nand_init(struct nand_chip *nand) +void davinci_nand_init(struct nand_chip *nand) { - nand->IO_ADDR_R = (void __iomem *)NAND_CE0DATA; - nand->IO_ADDR_W = (void __iomem *)NAND_CE0DATA; nand->chip_delay = 0; - nand->select_chip = nand_davinci_select_chip; #ifdef CONFIG_SYS_NAND_USE_FLASH_BBT nand->options = NAND_USE_FLASH_BBT; #endif #ifdef CONFIG_SYS_NAND_HW_ECC nand->ecc.mode = NAND_ECC_HW; -#ifdef CONFIG_SYS_DAVINCI_BROKEN_ECC - nand->ecc.layout = &davinci_nand_ecclayout; -#ifdef CONFIG_SYS_NAND_LARGEPAGE - nand->ecc.size = 2048; - nand->ecc.bytes = 12; -#elif defined(CONFIG_SYS_NAND_SMALLPAGE) nand->ecc.size = 512; nand->ecc.bytes = 3; -#else -#error "Either CONFIG_SYS_NAND_LARGEPAGE or CONFIG_SYS_NAND_SMALLPAGE must be defined!" -#endif -#else - nand->ecc.size = 512; - nand->ecc.bytes = 3; -#endif /* CONFIG_SYS_DAVINCI_BROKEN_ECC */ nand->ecc.calculate = nand_davinci_calculate_ecc; nand->ecc.correct = nand_davinci_correct_data; nand->ecc.hwctl = nand_davinci_enable_hwecc; @@ -452,9 +232,14 @@ int board_nand_init(struct nand_chip *nand) nand->cmd_ctrl = nand_davinci_hwcontrol; nand->dev_ready = nand_davinci_dev_ready; - nand->waitfunc = nand_davinci_waitfunc; nand_flash_init(); +} - return(0); +int board_nand_init(struct nand_chip *chip) __attribute__((weak)); + +int board_nand_init(struct nand_chip *chip) +{ + davinci_nand_init(chip); + return 0; } diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 3f318e0..77a33c0 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -766,6 +766,9 @@ int board_nand_init(struct nand_chip *nand) nand->waitfunc = fsl_elbc_wait; /* set up nand options */ + /* redirect the pointer of bbt pattern to RAM */ + bbt_main_descr.pattern = bbt_pattern; + bbt_mirror_descr.pattern = mirror_pattern; nand->bbt_td = &bbt_main_descr; nand->bbt_md = &bbt_mirror_descr; @@ -812,6 +815,7 @@ int board_nand_init(struct nand_chip *nand) /* Large-page-specific setup */ if (or & OR_FCM_PGS) { priv->page_size = 1; + largepage_memorybased.pattern = scan_ff_pattern; nand->badblock_pattern = &largepage_memorybased; /* adjust ecc setup if needed */ diff --git a/drivers/mtd/nand/nand_plat.c b/drivers/mtd/nand/nand_plat.c new file mode 100644 index 0000000..b35492b --- /dev/null +++ b/drivers/mtd/nand/nand_plat.c @@ -0,0 +1,53 @@ +/* + * Genericish driver for memory mapped NAND devices + * + * Copyright (c) 2006-2009 Analog Devices Inc. + * Licensed under the GPL-2 or later. + */ + +/* Your board must implement the following macros: + * NAND_PLAT_WRITE_CMD(chip, cmd) + * NAND_PLAT_WRITE_ADR(chip, cmd) + * NAND_PLAT_INIT() + * + * It may also implement the following: + * NAND_PLAT_DEV_READY(chip) + */ + +#include <common.h> +#include <asm/io.h> + +#include <nand.h> + +static void plat_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) +{ + struct nand_chip *this = mtd->priv; + + if (cmd == NAND_CMD_NONE) + return; + + if (ctrl & NAND_CLE) + NAND_PLAT_WRITE_CMD(this, cmd); + else + NAND_PLAT_WRITE_ADR(this, cmd); +} + +#ifdef NAND_PLAT_DEV_READY +static int plat_dev_ready(struct mtd_info *mtd) +{ + return NAND_PLAT_DEV_READY((struct nand_chip *)mtd->priv); +} +#else +# define plat_dev_ready NULL +#endif + +int board_nand_init(struct nand_chip *nand) +{ + NAND_PLAT_INIT(); + + nand->cmd_ctrl = plat_cmd_ctrl; + nand->dev_ready = plat_dev_ready; + nand->ecc.mode = NAND_ECC_SOFT; + + return 0; +} diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c index 88206d0..fc16282 100644 --- a/drivers/mtd/nand/nand_util.c +++ b/drivers/mtd/nand/nand_util.c @@ -315,7 +315,7 @@ int nand_lock(struct mtd_info *mtd, int tight) * NAND_LOCK_STATUS_UNLOCK: page unlocked * */ -int nand_get_lock_status(struct mtd_info *mtd, ulong offset) +int nand_get_lock_status(struct mtd_info *mtd, loff_t offset) { int ret = 0; int chipnr; @@ -436,7 +436,7 @@ int nand_unlock(struct mtd_info *mtd, ulong start, ulong length) * @param length image length * @return image length including bad blocks */ -static size_t get_len_incl_bad (nand_info_t *nand, size_t offset, +static size_t get_len_incl_bad (nand_info_t *nand, loff_t offset, const size_t length) { size_t len_incl_bad = 0; @@ -473,7 +473,7 @@ static size_t get_len_incl_bad (nand_info_t *nand, size_t offset, * @param buf buffer to read from * @return 0 in case of success */ -int nand_write_skip_bad(nand_info_t *nand, size_t offset, size_t *length, +int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, u_char *buffer) { int rval; @@ -498,7 +498,7 @@ int nand_write_skip_bad(nand_info_t *nand, size_t offset, size_t *length, if (len_incl_bad == *length) { rval = nand_write (nand, offset, length, buffer); if (rval != 0) - printf ("NAND write to offset %zx failed %d\n", + printf ("NAND write to offset %llx failed %d\n", offset, rval); return rval; @@ -509,7 +509,7 @@ int nand_write_skip_bad(nand_info_t *nand, size_t offset, size_t *length, size_t write_size; if (nand_block_isbad (nand, offset & ~(nand->erasesize - 1))) { - printf ("Skip bad block 0x%08zx\n", + printf ("Skip bad block 0x%08llx\n", offset & ~(nand->erasesize - 1)); offset += nand->erasesize - block_offset; continue; @@ -522,7 +522,7 @@ int nand_write_skip_bad(nand_info_t *nand, size_t offset, size_t *length, rval = nand_write (nand, offset, &write_size, p_buffer); if (rval != 0) { - printf ("NAND write to offset %zx failed %d\n", + printf ("NAND write to offset %llx failed %d\n", offset, rval); *length -= left_to_write; return rval; @@ -550,7 +550,7 @@ int nand_write_skip_bad(nand_info_t *nand, size_t offset, size_t *length, * @param buffer buffer to write to * @return 0 in case of success */ -int nand_read_skip_bad(nand_info_t *nand, size_t offset, size_t *length, +int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, u_char *buffer) { int rval; @@ -568,7 +568,7 @@ int nand_read_skip_bad(nand_info_t *nand, size_t offset, size_t *length, if (len_incl_bad == *length) { rval = nand_read (nand, offset, length, buffer); if (rval != 0) - printf ("NAND read from offset %zx failed %d\n", + printf ("NAND read from offset %llx failed %d\n", offset, rval); return rval; @@ -579,7 +579,7 @@ int nand_read_skip_bad(nand_info_t *nand, size_t offset, size_t *length, size_t read_length; if (nand_block_isbad (nand, offset & ~(nand->erasesize - 1))) { - printf ("Skipping bad block 0x%08zx\n", + printf ("Skipping bad block 0x%08llx\n", offset & ~(nand->erasesize - 1)); offset += nand->erasesize - block_offset; continue; @@ -592,7 +592,7 @@ int nand_read_skip_bad(nand_info_t *nand, size_t offset, size_t *length, rval = nand_read (nand, offset, &read_length, p_buffer); if (rval != 0) { - printf ("NAND read from offset %zx failed %d\n", + printf ("NAND read from offset %llx failed %d\n", offset, rval); *length -= left_to_read; return rval; |