From 1f4d653d8cb34ad17de722eef45bc9db9bbb1aa3 Mon Sep 17 00:00:00 2001 From: "Ronald G. Minnich" Date: Thu, 30 Sep 2004 16:37:01 +0000 Subject: Support for sst firmware hub Corresponding to flashrom svn r25 and coreboot v2 svn r1651. --- jedec.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'jedec.c') diff --git a/jedec.c b/jedec.c index d99e774..19a233b 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) { -- cgit v1.1