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author | Tom Rini <trini@ti.com> | 2013-03-14 05:32:50 +0000 |
---|---|---|
committer | Marek Vasut <marex@denx.de> | 2013-04-10 15:22:22 +0200 |
commit | c39d6a0ea57d57b53bd7fb8933874e1640e47888 (patch) | |
tree | c3e91d95b7fa285301973278ca4cb2b31ab8c621 /common | |
parent | a24c3155db20f979f9a0aa758d4665f221e470b9 (diff) | |
download | u-boot-imx-c39d6a0ea57d57b53bd7fb8933874e1640e47888.zip u-boot-imx-c39d6a0ea57d57b53bd7fb8933874e1640e47888.tar.gz u-boot-imx-c39d6a0ea57d57b53bd7fb8933874e1640e47888.tar.bz2 |
nand: Extend nand_(read|write)_skip_bad with *actual and limit parameters
We make these two functions take a size_t pointer to how much space
was used on NAND to read or write the buffer (when reads/writes happen)
so that bad blocks can be accounted for. We also make them take an
loff_t limit on how much data can be read or written. This means that
we can now catch the case of when writing to a partition would exceed
the partition size due to bad blocks. To do this we also need to make
check_skip_len count not just complete blocks used but partial ones as
well. All callers of nand_(read|write)_skip_bad are adjusted to call
these with the most sensible limits available.
The changes were started by Pantelis and finished by Tom.
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'common')
-rw-r--r-- | common/cmd_nand.c | 53 | ||||
-rw-r--r-- | common/env_nand.c | 3 |
2 files changed, 33 insertions, 23 deletions
diff --git a/common/cmd_nand.c b/common/cmd_nand.c index 32348f3..110c78c 100644 --- a/common/cmd_nand.c +++ b/common/cmd_nand.c @@ -137,7 +137,8 @@ static inline int str2long(const char *p, ulong *num) return *p != '\0' && *endptr == '\0'; } -static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size) +static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size, + loff_t *maxsize) { #ifdef CONFIG_CMD_MTDPARTS struct mtd_device *dev; @@ -160,6 +161,7 @@ static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size) *off = part->offset; *size = part->size; + *maxsize = part->size; *idx = dev->id->num; ret = set_dev(*idx); @@ -173,10 +175,11 @@ static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size) #endif } -static int arg_off(const char *arg, int *idx, loff_t *off, loff_t *maxsize) +static int arg_off(const char *arg, int *idx, loff_t *off, loff_t *size, + loff_t *maxsize) { if (!str2off(arg, off)) - return get_part(arg, idx, off, maxsize); + return get_part(arg, idx, off, size, maxsize); if (*off >= nand_info[*idx].size) { puts("Offset exceeds device limit\n"); @@ -184,36 +187,35 @@ static int arg_off(const char *arg, int *idx, loff_t *off, loff_t *maxsize) } *maxsize = nand_info[*idx].size - *off; + *size = *maxsize; return 0; } static int arg_off_size(int argc, char *const argv[], int *idx, - loff_t *off, loff_t *size) + loff_t *off, loff_t *size, loff_t *maxsize) { int ret; - loff_t maxsize = 0; if (argc == 0) { *off = 0; *size = nand_info[*idx].size; + *maxsize = *size; goto print; } - ret = arg_off(argv[0], idx, off, &maxsize); + ret = arg_off(argv[0], idx, off, size, maxsize); if (ret) return ret; - if (argc == 1) { - *size = maxsize; + if (argc == 1) goto print; - } if (!str2off(argv[1], size)) { printf("'%s' is not a number\n", argv[1]); return -1; } - if (*size > maxsize) { + if (*size > *maxsize) { puts("Size exceeds partition or device limit\n"); return -1; } @@ -307,7 +309,8 @@ int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[]) if (argc < 3) goto usage; - if (arg_off(argv[2], &idx, &addr, &maxsize)) { + /* We don't care about size, or maxsize. */ + if (arg_off(argv[2], &idx, &addr, &maxsize, &maxsize)) { puts("Offset or partition name expected\n"); return 1; } @@ -426,7 +429,7 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { int i, ret = 0; ulong addr; - loff_t off, size; + loff_t off, size, maxsize; char *cmd, *s; nand_info_t *nand; #ifdef CONFIG_SYS_NAND_QUIET @@ -551,7 +554,8 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) printf("\nNAND %s: ", cmd); /* skip first two or three arguments, look for offset and size */ - if (arg_off_size(argc - o, argv + o, &dev, &off, &size) != 0) + if (arg_off_size(argc - o, argv + o, &dev, &off, &size, + &maxsize) != 0) return 1; nand = &nand_info[dev]; @@ -619,7 +623,7 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (s && !strcmp(s, ".raw")) { raw = 1; - if (arg_off(argv[3], &dev, &off, &size)) + if (arg_off(argv[3], &dev, &off, &size, &maxsize)) return 1; if (argc > 4 && !str2long(argv[4], &pagecount)) { @@ -635,7 +639,7 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) rwsize = pagecount * (nand->writesize + nand->oobsize); } else { if (arg_off_size(argc - 3, argv + 3, &dev, - &off, &size) != 0) + &off, &size, &maxsize) != 0) return 1; rwsize = size; @@ -645,9 +649,11 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) !strcmp(s, ".e") || !strcmp(s, ".i")) { if (read) ret = nand_read_skip_bad(nand, off, &rwsize, + NULL, maxsize, (u_char *)addr); else ret = nand_write_skip_bad(nand, off, &rwsize, + NULL, maxsize, (u_char *)addr, 0); #ifdef CONFIG_CMD_NAND_TRIMFFS } else if (!strcmp(s, ".trimffs")) { @@ -655,8 +661,8 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) printf("Unknown nand command suffix '%s'\n", s); return 1; } - ret = nand_write_skip_bad(nand, off, &rwsize, - (u_char *)addr, + ret = nand_write_skip_bad(nand, off, &rwsize, NULL, + maxsize, (u_char *)addr, WITH_DROP_FFS); #endif #ifdef CONFIG_CMD_NAND_YAFFS @@ -665,8 +671,8 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) printf("Unknown nand command suffix '%s'.\n", s); return 1; } - ret = nand_write_skip_bad(nand, off, &rwsize, - (u_char *)addr, + ret = nand_write_skip_bad(nand, off, &rwsize, NULL, + maxsize, (u_char *)addr, WITH_INLINE_OOB); #endif } else if (!strcmp(s, ".oob")) { @@ -775,7 +781,8 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (s && !strcmp(s, ".allexcept")) allexcept = 1; - if (arg_off_size(argc - 2, argv + 2, &dev, &off, &size) < 0) + if (arg_off_size(argc - 2, argv + 2, &dev, &off, &size, + &maxsize) < 0) return 1; if (!nand_unlock(&nand_info[dev], off, size, allexcept)) { @@ -873,7 +880,8 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand, printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset); cnt = nand->writesize; - r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr); + r = nand_read_skip_bad(nand, offset, &cnt, NULL, nand->size, + (u_char *)addr); if (r) { puts("** Read error\n"); bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ); @@ -905,7 +913,8 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand, } bootstage_mark(BOOTSTAGE_ID_NAND_TYPE); - r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr); + r = nand_read_skip_bad(nand, offset, &cnt, NULL, nand->size, + (u_char *)addr); if (r) { puts("** Read error\n"); bootstage_error(BOOTSTAGE_ID_NAND_READ); diff --git a/common/env_nand.c b/common/env_nand.c index 5b69889..b745822 100644 --- a/common/env_nand.c +++ b/common/env_nand.c @@ -281,7 +281,8 @@ int readenv(size_t offset, u_char *buf) } else { char_ptr = &buf[amount_loaded]; if (nand_read_skip_bad(&nand_info[0], offset, - &len, char_ptr)) + &len, NULL, + nand_info[0].size, char_ptr)) return 1; offset += blocksize; |