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-rw-r--r--jedec.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/jedec.c b/jedec.c
index d99e774be..19a233b81 100644
--- a/jedec.c
+++ b/jedec.c
@@ -89,6 +89,35 @@ int erase_sector_jedec(volatile unsigned char *bios, unsigned int page)
return (0);
}
+int erase_block_jedec(volatile unsigned char *bios, unsigned int block)
+{
+ volatile unsigned char *Temp;
+
+ /* Issue the Sector Erase command */
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0xAA; /* write data 0xAA to the address */
+ myusec_delay(10);
+ Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
+ *Temp = 0x55; /* write data 0x55 to the address */
+ myusec_delay(10);
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0x80; /* write data 0x80 to the address */
+ myusec_delay(10);
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0xAA; /* write data 0xAA to the address */
+ myusec_delay(10);
+ Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
+ *Temp = 0x55; /* write data 0x55 to the address */
+ myusec_delay(10);
+ Temp = bios + block; /* set up address to be the current sector */
+ *Temp = 0x50; /* write data 0x30 to the address */
+ myusec_delay(10);
+
+ /* wait for Toggle bit ready */
+ toggle_ready_jedec(bios);
+
+ return (0);
+}
int erase_chip_jedec(struct flashchip *flash)
{