added -E option for chip erase, remove duplicated code
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1815 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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@@ -62,26 +62,19 @@ int probe_jedec(struct flashchip *flash)
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int erase_sector_jedec(volatile unsigned char *bios, unsigned int page)
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{
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volatile unsigned char *Temp;
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/* Issue the Sector Erase command */
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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*(volatile char *) (bios + 0x5555) = 0xAA;
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0x80; /* write data 0x80 to the address */
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*(volatile char *) (bios + 0x5555) = 0x80;
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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*(volatile char *) (bios + 0x5555) = 0xAA;
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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Temp = bios + page; /* set up address to be the current sector */
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*Temp = 0x30; /* write data 0x30 to the address */
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*(volatile char *) (bios + page) = 0x30;
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myusec_delay(10);
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/* wait for Toggle bit ready */
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@@ -92,26 +85,19 @@ int erase_sector_jedec(volatile unsigned char *bios, unsigned int page)
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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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/* Issue the Sector Erase command */
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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*(volatile char *) (bios + 0x5555) = 0xAA;
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0x80; /* write data 0x80 to the address */
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*(volatile char *) (bios + 0x5555) = 0x80;
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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*(volatile char *) (bios + 0x5555) = 0xAA;
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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Temp = bios + block; /* set up address to be the current sector */
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*Temp = 0x50; /* write data 0x30 to the address */
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*(volatile char *) (bios + block) = 0x50;
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myusec_delay(10);
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/* wait for Toggle bit ready */
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@@ -123,26 +109,20 @@ int erase_block_jedec(volatile unsigned char *bios, unsigned int block)
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int erase_chip_jedec(struct flashchip *flash)
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{
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volatile unsigned char *bios = flash->virt_addr;
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volatile unsigned char *Temp;
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/* Issue the JEDEC Chip Erase command */
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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*(volatile char *) (bios + 0x5555) = 0xAA;
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0x80; /* write data 0x80 to the address */
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*(volatile char *) (bios + 0x5555) = 0x80;
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be BASE:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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*(volatile char *) (bios + 0x5555) = 0xAA;
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be BASEy:5555h */
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*Temp = 0x10; /* write data 0x10 to the address */
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*(volatile char *) (bios + 0x5555) = 0x10;
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myusec_delay(10);
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toggle_ready_jedec(bios);
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