From 51582f282ba230178aec0226ec6098460a2a25da Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Thu, 23 Aug 2007 10:20:40 +0000 Subject: Move code into *.c files, there's no reason to have it in header files Corresponding to flashrom svn r127 and coreboot v2 svn r2745. Signed-off-by: Uwe Hermann Acked-by: Stefan Reinauer --- jedec.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'jedec.c') diff --git a/jedec.c b/jedec.c index c4afadf..0c34e17 100644 --- a/jedec.c +++ b/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; -- cgit v1.1