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author | uwe <uwe@2b7e53f0-3cfb-0310-b3e9-8179ed1497e1> | 2007-08-23 10:20:40 +0000 |
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committer | uwe <uwe@2b7e53f0-3cfb-0310-b3e9-8179ed1497e1> | 2007-08-23 10:20:40 +0000 |
commit | bcaf943a70faa01d23da104346c749e4db12c775 (patch) | |
tree | bbb6f4bfdbaa94a46047f0774f3bc009b3214547 /jedec.c | |
parent | dcc8ec4ad82cb3725230ad0e69bc7bbd13881c2d (diff) | |
download | flashrom-bcaf943a70faa01d23da104346c749e4db12c775.tar.gz |
Original v2 revision: 2745
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: https://code.coreboot.org/svn/flashrom/trunk@127 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'jedec.c')
-rw-r--r-- | jedec.c | 52 |
1 files changed, 52 insertions, 0 deletions
@@ -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; |