with this patch, it is possible to get the offset and size information from the mtdpartiton setting in "mtdparts", similiar to the "nand" commandos.
=> sf sf - SPI flash sub-system
Usage: sf probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus and chip select sf read addr offset|partition len - read `len' bytes starting at `offset' to memory at `addr' sf write addr offset|partition len - write `len' bytes from memory at `addr' to flash at `offset' sf erase offset|partition [+]len - erase `len' bytes from `offset' `+len' round up `len' to block size sf update addr offset|partition len - erase and write `len' bytes from memory at `addr' to flash at `offset' => for example "env" is defined in mtdparts:
=> sf read 13000000 env device 0 offset 0xd0000, size 0x10000 SF: 65536 bytes @ 0xd0000 Read: OK =>
Signed-off-by: Heiko Schocher hs@denx.de Reviewed-by: Jagannadha Sutradharudu Teki jagannadh.teki@gmail.com
---
Changes in v6: None Changes in v2: - none Series-changes: 3 - rebase with d6c1ffc7d23f4fe4ae8c91101861055b8e1501b6 Series-changes: 4 - rebased against 385a08a60f042061b004642d6b9bb6cfb794ad5a Series-changes: 5 - no changes series-changes: 6 - add comment from Jagan Teki: - append help text - add Reviewed-by from Jagannadha Sutradharudu Teki
common/cmd_sf.c | 54 +++++++++++++++++++++++++++++------------------------- 1 file changed, 29 insertions(+), 25 deletions(-)
diff --git a/common/cmd_sf.c b/common/cmd_sf.c index 0250011..3bf9119 100644 --- a/common/cmd_sf.c +++ b/common/cmd_sf.c @@ -13,6 +13,8 @@ #include <mapmem.h> #include <spi.h> #include <spi_flash.h> +#include <jffs2/jffs2.h> +#include <linux/mtd/mtd.h>
#include <asm/io.h> #include <dm/device-internal.h> @@ -254,23 +256,21 @@ static int spi_flash_update(struct spi_flash *flash, u32 offset, static int do_spi_flash_read_write(int argc, char * const argv[]) { unsigned long addr; - unsigned long offset; - unsigned long len; void *buf; char *endp; int ret = 1; + int dev = 0; + loff_t offset, len, maxsize;
- if (argc < 4) + if (argc < 3) return -1;
addr = simple_strtoul(argv[1], &endp, 16); if (*argv[1] == 0 || *endp != 0) return -1; - offset = simple_strtoul(argv[2], &endp, 16); - if (*argv[2] == 0 || *endp != 0) - return -1; - len = simple_strtoul(argv[3], &endp, 16); - if (*argv[3] == 0 || *endp != 0) + + if (mtd_arg_off_size(argc - 2, &argv[2], &dev, &offset, &len, + &maxsize, MTD_DEV_TYPE_NOR, flash->size)) return -1;
/* Consistency checking */ @@ -309,31 +309,31 @@ static int do_spi_flash_read_write(int argc, char * const argv[])
static int do_spi_flash_erase(int argc, char * const argv[]) { - unsigned long offset; - unsigned long len; - char *endp; int ret; + int dev = 0; + loff_t offset, len, maxsize; + ulong size;
if (argc < 3) return -1;
- offset = simple_strtoul(argv[1], &endp, 16); - if (*argv[1] == 0 || *endp != 0) + if (mtd_arg_off(argv[1], &dev, &offset, &len, &maxsize, + MTD_DEV_TYPE_NOR, flash->size)) return -1;
- ret = sf_parse_len_arg(argv[2], &len); + ret = sf_parse_len_arg(argv[2], &size); if (ret != 1) return -1;
/* Consistency checking */ - if (offset + len > flash->size) { + if (offset + size > flash->size) { printf("ERROR: attempting %s past flash size (%#x)\n", argv[0], flash->size); return 1; }
- ret = spi_flash_erase(flash, offset, len); - printf("SF: %zu bytes @ %#x Erased: %s\n", (size_t)len, (u32)offset, + ret = spi_flash_erase(flash, offset, size); + printf("SF: %zu bytes @ %#x Erased: %s\n", (size_t)size, (u32)offset, ret ? "ERROR" : "OK");
return ret == 0 ? 0 : 1; @@ -558,13 +558,17 @@ U_BOOT_CMD( "SPI flash sub-system", "probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus\n" " and chip select\n" - "sf read addr offset len - read `len' bytes starting at\n" - " `offset' to memory at `addr'\n" - "sf write addr offset len - write `len' bytes from memory\n" - " at `addr' to flash at `offset'\n" - "sf erase offset [+]len - erase `len' bytes from `offset'\n" - " `+len' round up `len' to block size\n" - "sf update addr offset len - erase and write `len' bytes from memory\n" - " at `addr' to flash at `offset'" + "sf read addr offset|partition len - read `len' bytes starting at\n" + " `offset' or from start of mtd\n" + " `partition'to memory at `addr'\n" + "sf write addr offset|partition len - write `len' bytes from memory\n" + " at `addr' to flash at `offset'\n" + " or to start of mtd `partition'\n" + "sf erase offset|partition [+]len - erase `len' bytes from `offset'\n" + " ^ or from start of mtd `partition'\n" + " `+len' round up `len' to block size\n" + "sf update addr offset|partition len - erase and write `len' bytes from memory\n" + " at `addr' to flash at `offset'\n" + " or to start of mtd `partition'\n" SF_TEST_HELP );