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| author | Jonas Gorski <jonas.gorski@gmail.com> | 2011-12-17 16:58:14 +0400 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-01-09 22:19:00 +0400 |
| commit | f2d9739b8e0bc9bdcc972950dd433b5083edf72f (patch) | |
| tree | fa3779069cc5608eeef1048d576a9c196b8095ec /drivers/mtd/bcm63xxpart.c | |
| parent | f9fbcdc357f37d6c82a75a89c64efbe8bd5274e1 (diff) | |
| download | linux-f2d9739b8e0bc9bdcc972950dd433b5083edf72f.tar.xz | |
mtd: bcm63xxpart: check version marker string for newer CFEs
Recent CFEs do not contain the CFE1CFE1 magic anymore, so check for the
"cfe-v" version marker string instead. As very old CFEs do not have
this string, leave the CFE1CFE1 magic as a fallback for detection.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/bcm63xxpart.c')
| -rw-r--r-- | drivers/mtd/bcm63xxpart.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/mtd/bcm63xxpart.c b/drivers/mtd/bcm63xxpart.c index ac7d3c823949..9933b347a555 100644 --- a/drivers/mtd/bcm63xxpart.c +++ b/drivers/mtd/bcm63xxpart.c @@ -32,22 +32,34 @@ #include <linux/mtd/partitions.h> #include <asm/mach-bcm63xx/bcm963xx_tag.h> +#include <asm/mach-bcm63xx/board_bcm963xx.h> #define BCM63XX_EXTENDED_SIZE 0xBFC00000 /* Extended flash address */ +#define BCM63XX_CFE_MAGIC_OFFSET 0x4e0 + static int bcm63xx_detect_cfe(struct mtd_info *master) { - int idoffset = 0x4e0; - static char idstring[8] = "CFE1CFE1"; char buf[9]; int ret; size_t retlen; - ret = master->read(master, idoffset, 8, &retlen, (void *)buf); + ret = master->read(master, BCM963XX_CFE_VERSION_OFFSET, 5, &retlen, + (void *)buf); + buf[retlen] = 0; + + if (ret) + return ret; + + if (strncmp("cfe-v", buf, 5) == 0) + return 0; + + /* very old CFE's do not have the cfe-v string, so check for magic */ + ret = master->read(master, BCM63XX_CFE_MAGIC_OFFSET, 8, &retlen, + (void *)buf); buf[retlen] = 0; - pr_info("Read Signature value of %s\n", buf); - return strncmp(idstring, buf, 8); + return strncmp("CFE1CFE1", buf, 8); } static int bcm63xx_parse_cfe_partitions(struct mtd_info *master, |