94c1b0ccc0
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1232 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
48 lines
921 B
C
48 lines
921 B
C
#ifndef __82802AB_H__
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#define __82802AB_H__ 1
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extern int probe_82802ab (struct flashchip * flash);
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extern int erase_82802ab (struct flashchip * flash);
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extern int write_82802ab (struct flashchip * flash, unsigned char * buf);
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extern __inline__ void toggle_ready_82802ab (volatile 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_82802ab (volatile 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_82802ab (volatile char * bios)
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{
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0xA0;
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usleep(200);
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}
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#endif /* !__82802AB_H__ */
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