diff options
| author | Stefano Babic <sbabic@denx.de> | 2011-12-15 10:55:37 +0100 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2012-01-26 16:06:21 -0600 |
| commit | d3022c5f5ce1bff39a58bce2b00b36f2fed0e299 (patch) | |
| tree | cd0b4e375139aefe779ea827bc52951c3e34051c /drivers | |
| parent | 137703b811502dfea364650fb3e17f20b4c21333 (diff) | |
| download | blackbird-obmc-uboot-d3022c5f5ce1bff39a58bce2b00b36f2fed0e299.tar.gz blackbird-obmc-uboot-d3022c5f5ce1bff39a58bce2b00b36f2fed0e299.zip | |
nand_spl_simple: store ecc data on the stack
Currently nand_spl_simple puts it's temp data at 0x10000 offset in SDRAM
which is likely to contain already loaded data.
The patch saves the oob data and the ecc on the stack replacing
the fixed address in RAM.
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Ilya Yanok <yanok@emcraft.com>
CC: Scott Wood <scottwood@freescale.com>
CC: Tom Rini <tom.rini@gmail.com>
CC: Simon Schwarz <simonschwarzcor@googlemail.com>
CC: Wolfgang Denk <wd@denx.de>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/nand_spl_simple.c | 42 |
1 files changed, 16 insertions, 26 deletions
diff --git a/drivers/mtd/nand/nand_spl_simple.c b/drivers/mtd/nand/nand_spl_simple.c index 7eb08a3b08..4a4d02f4c8 100644 --- a/drivers/mtd/nand/nand_spl_simple.c +++ b/drivers/mtd/nand/nand_spl_simple.c @@ -27,6 +27,11 @@ static int nand_ecc_pos[] = CONFIG_SYS_NAND_ECCPOS; static nand_info_t mtd; static struct nand_chip nand_chip; +#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) @@ -145,29 +150,21 @@ static int nand_is_bad_block(int block) static int nand_read_page(int block, int page, uchar *dst) { struct nand_chip *this = mtd.priv; - u_char *ecc_calc; - u_char *ecc_code; - u_char *oob_data; + 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 = CONFIG_SYS_NAND_ECCSTEPS; + int eccsteps = ECCSTEPS; uint8_t *p = dst; - /* - * No malloc available for now, just use some temporary locations - * in SDRAM - */ - ecc_calc = (u_char *)(CONFIG_SYS_SDRAM_BASE + 0x10000); - ecc_code = ecc_calc + 0x100; - oob_data = ecc_calc + 0x200; - nand_command(block, page, 0, NAND_CMD_READOOB); this->read_buf(&mtd, oob_data, CONFIG_SYS_NAND_OOBSIZE); nand_command(block, page, 0, NAND_CMD_READ0); /* Pick the ECC bytes out of the oob data */ - for (i = 0; i < CONFIG_SYS_NAND_ECCTOTAL; i++) + for (i = 0; i < ECCTOTAL; i++) ecc_code[i] = oob_data[nand_ecc_pos[i]]; @@ -184,24 +181,17 @@ static int nand_read_page(int block, int page, uchar *dst) static int nand_read_page(int block, int page, void *dst) { struct nand_chip *this = mtd.priv; - u_char *ecc_calc; - u_char *ecc_code; - u_char *oob_data; + 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 = CONFIG_SYS_NAND_ECCSTEPS; + int eccsteps = ECCSTEPS; uint8_t *p = dst; nand_command(block, page, 0, NAND_CMD_READ0); - /* No malloc available for now, just use some temporary locations - * in SDRAM - */ - ecc_calc = (u_char *)(CONFIG_SYS_SDRAM_BASE + 0x10000); - ecc_code = ecc_calc + 0x100; - oob_data = ecc_calc + 0x200; - for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { if (this->ecc.mode != NAND_ECC_SOFT) this->ecc.hwctl(&mtd, NAND_ECC_READ); @@ -211,10 +201,10 @@ static int nand_read_page(int block, int page, void *dst) this->read_buf(&mtd, oob_data, CONFIG_SYS_NAND_OOBSIZE); /* Pick the ECC bytes out of the oob data */ - for (i = 0; i < CONFIG_SYS_NAND_ECCTOTAL; i++) + for (i = 0; i < ECCTOTAL; i++) ecc_code[i] = oob_data[nand_ecc_pos[i]]; - eccsteps = CONFIG_SYS_NAND_ECCSTEPS; + eccsteps = ECCSTEPS; p = dst; for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { |
