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| author | Li-Ta Lo <ollie@lanl.gov> | 2004-12-08 02:10:33 +0000 |
|---|---|---|
| committer | Li-Ta Lo <ollie@lanl.gov> | 2004-12-08 02:10:33 +0000 |
| commit | 19b6945a40d17703124db0a5f3259bb8e7d6dff7 (patch) | |
| tree | 3027ebb279dce0c8bf6ede8128bd3e2b53ee5345 /util/flash_and_burn/jedec.c | |
| parent | c48822ae916eb8f14389f1dbb21cd11ab60fe1ab (diff) | |
| download | coreboot-19b6945a40d17703124db0a5f3259bb8e7d6dff7.tar.xz | |
add retry to write_byte_program_jedec(), 99% success rate
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1814 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/flash_and_burn/jedec.c')
| -rw-r--r-- | util/flash_and_burn/jedec.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/util/flash_and_burn/jedec.c b/util/flash_and_burn/jedec.c index 0344b6985c..8cab944943 100644 --- a/util/flash_and_burn/jedec.c +++ b/util/flash_and_burn/jedec.c @@ -176,11 +176,14 @@ int write_page_write_jedec(volatile unsigned char *bios, unsigned char *src, int write_byte_program_jedec(volatile unsigned char *bios, unsigned char *src, volatile unsigned char *dst) { + int tried = 0; + /* If the data is 0xFF, don't program it */ if (*src == 0xFF) { return 0; } +retry: /* Issue JEDEC Byte Program command */ *(volatile unsigned char *) (bios + 0x5555) = 0xAA; *(volatile unsigned char *) (bios + 0x2AAA) = 0x55; @@ -188,9 +191,12 @@ int write_byte_program_jedec(volatile unsigned char *bios, unsigned char *src, /* transfer data from source to destination */ *dst = *src; - toggle_ready_jedec(bios); + if (*dst != *src && tried++ < 0x10) { + goto retry; + } + return 0; } |