mirror of
https://review.coreboot.org/flashrom.git
synced 2025-04-26 22:52:34 +02:00
62 lines
1.1 KiB
C
62 lines
1.1 KiB
C
extern int probe_jedec (struct flashchip * flash);
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extern int erase_jedec (struct flashchip * flash);
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extern int write_jedec (struct flashchip * flash, char * buf);
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extern __inline__ void toggle_ready_jedec (char * dst)
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{
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unsigned int i = 0;
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char tmp1, tmp2;
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tmp1 = *dst & 0x40;
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while (i++ < 0xFFFFFF) {
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tmp2 = *dst & 0x40;
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if (tmp1 == tmp2) {
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break;
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}
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tmp1 = tmp2;
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}
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}
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extern __inline__ void data_polling_jedec (char * dst, char data)
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{
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unsigned int i = 0;
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char tmp;
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data &= 0x80;
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while (i++ < 0xFFFFFF) {
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tmp = *dst & 0x80;
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if (tmp == data) {
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break;
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}
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}
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}
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extern __inline__ void protect_jedec (char * bios)
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{
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*(char *) (bios + 0x5555) = 0xAA;
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*(char *) (bios + 0x2AAA) = 0x55;
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*(char *) (bios + 0x5555) = 0xA0;
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usleep(200);
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}
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extern __inline__ void write_page_jedec (char * bios, char * src, char * dst,
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int page_size)
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{
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int i;
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*(char *) (bios + 0x5555) = 0xAA;
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*(char *) (bios + 0x2AAA) = 0x55;
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*(char *) (bios + 0x5555) = 0xA0;
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for (i = 0; i < page_size; i++) {
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/* transfer data from source to destination */
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*dst++ = *src++;
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}
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usleep(100);
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toggle_ready_jedec(dst-1);
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}
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