SST49LF00[2,3,4] should use
the same driver as 49LF008 git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1812 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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@@ -89,6 +89,7 @@ int erase_sector_jedec(volatile unsigned char *bios, unsigned int page)
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return (0);
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}
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int erase_block_jedec(volatile unsigned char *bios, unsigned int block)
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{
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volatile unsigned char *Temp;
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@@ -149,43 +150,45 @@ int erase_chip_jedec(struct flashchip *flash)
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return (0);
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}
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void write_page_write_jedec(volatile unsigned char *bios, unsigned char *src,
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volatile unsigned char *dst, int page_size)
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int write_page_write_jedec(volatile unsigned char *bios, unsigned char *src,
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volatile unsigned char *dst, int page_size)
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{
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int i;
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/* Issue JEDEC Data Unprotect comand */
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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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*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
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*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
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*(volatile unsigned char *) (bios + 0x5555) = 0xA0;
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/* transfer data from source to destination */
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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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/* If the data is 0xFF, don't program it */
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if (*src == 0xFF)
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continue;
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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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return 0;
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}
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int write_byte_program_jedec(volatile unsigned char *bios, unsigned char *src,
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volatile unsigned char *dst)
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{
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volatile unsigned char *Temp;
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/* transfer data from source to destination */
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/* If the data is 0xFF, don't program it */
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if (*src == 0xFF) {
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/* If the data is 0xFF, don't program it */
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return 0;
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}
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/* Issue JEDEC Byte Program command */
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Temp = bios + 0x5555;
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*Temp = 0xAA;
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Temp = bios + 0x2AAA;
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*Temp = 0x55;
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Temp = bios + 0x5555;
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*Temp = 0xA0;
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*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
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*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
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*(volatile unsigned char *) (bios + 0x5555) = 0xA0;
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/* transfer data from source to destination */
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*dst = *src;
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toggle_ready_jedec(bios);
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return 0;
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