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| author | Uwe Hermann <uwe@hermann-uwe.de> | 2007-08-23 10:20:40 +0000 |
|---|---|---|
| committer | Uwe Hermann <uwe@hermann-uwe.de> | 2007-08-23 10:20:40 +0000 |
| commit | 3a9bbc2cc8bc20fc64d40dc8dd67814ab66e77f5 (patch) | |
| tree | 4530140526fe5c0ff3e611772240e5f3a357950a /util/flashrom/jedec.c | |
| parent | 3436698b6a91a921d7091d141b01c396bdc25dc1 (diff) | |
| download | coreboot-3a9bbc2cc8bc20fc64d40dc8dd67814ab66e77f5.tar.xz | |
Move code into *.c files, there's no reason to have it in header files.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2745 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/flashrom/jedec.c')
| -rw-r--r-- | util/flashrom/jedec.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/util/flashrom/jedec.c b/util/flashrom/jedec.c index c4afadf1e5..0c34e17a58 100644 --- a/util/flashrom/jedec.c +++ b/util/flashrom/jedec.c @@ -33,6 +33,58 @@ #define MAX_REFLASH_TRIES 0x10 +void toggle_ready_jedec(volatile uint8_t *dst) +{ + unsigned int i = 0; + uint8_t tmp1, tmp2; + + tmp1 = *dst & 0x40; + + while (i++ < 0xFFFFFFF) { + tmp2 = *dst & 0x40; + if (tmp1 == tmp2) { + break; + } + tmp1 = tmp2; + } +} + +void data_polling_jedec(volatile uint8_t *dst, uint8_t data) +{ + unsigned int i = 0; + uint8_t tmp; + + data &= 0x80; + + while (i++ < 0xFFFFFFF) { + tmp = *dst & 0x80; + if (tmp == data) { + break; + } + } +} + +void unprotect_jedec(volatile uint8_t *bios) +{ + *(volatile uint8_t *)(bios + 0x5555) = 0xAA; + *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; + *(volatile uint8_t *)(bios + 0x5555) = 0x80; + *(volatile uint8_t *)(bios + 0x5555) = 0xAA; + *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; + *(volatile uint8_t *)(bios + 0x5555) = 0x20; + + usleep(200); +} + +void protect_jedec(volatile uint8_t *bios) +{ + *(volatile uint8_t *)(bios + 0x5555) = 0xAA; + *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; + *(volatile uint8_t *)(bios + 0x5555) = 0xA0; + + usleep(200); +} + int probe_jedec(struct flashchip *flash) { volatile uint8_t *bios = flash->virtual_memory; |