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spl_mmc.c: Detect missing kernel image in RAW MMC

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Currently, we assume that if we can read from MMC correctly, we have
found a valid image.  This is not the case as an empty area will read
just fine.  Add a check for a valid IH_MAGIC.

Signed-off-by: Tom Rini <trini@ti.com>
Reviewed-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Tom Rini
2013-06-28 14:43:01 -04:00
parent 3864cb2133
commit e4c444b34b
1 changed files with 4 additions and 0 deletions
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4
common/spl/spl_mmc.c
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@@ -13,6 +13,7 @@
#include <mmc.h> #include <mmc.h>
#include <fat.h> #include <fat.h>
#include <version.h> #include <version.h>
#include <image.h>
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
@@ -30,6 +31,9 @@ static int mmc_load_image_raw(struct mmc *mmc, unsigned long sector)
if (err == 0) if (err == 0)
goto end; goto end;
if (image_get_magic(header) != IH_MAGIC)
return -1;
spl_parse_image_header(header); spl_parse_image_header(header);
/* convert size to sectors - round up */ /* convert size to sectors - round up */