openwrt/flashrom
1
0
Fork 0
mirror of https://review.coreboot.org/flashrom.git synced 2025-07-01 06:01:16 +02:00
Code Issues Releases Wiki Activity

Convert various SST chips to use block_erasers

Browse Source 
Convert the following chips to block_erasers: SST28SF040A SST29EE010
SST29LE010 SST29EE020A SST29LE020 SST39SF010A SST39SF020A SST39SF040
SST39VF512 SST39VF010 SST39VF020 SST39VF040 SST39VF080 SST49LF002A/B
SST49LF003A/B SST49LF004C SST49LF008A SST49LF008C SST49LF016C SST49LF020
SST49LF020A SST49LF040 SST49LF040B SST49LF080A SST49LF160C .

Extend sst28sf040 to include chip and sector functions for block_eraser.
Extend sst49lfxxxc to include chip, sector, block erasers functions for
block_erasers. Extend sst_fwhub to include chip and sector functions for
block_erasers. Add copyrights to changed files. Killed erase_sst_fwhub.
Killed erase_49lfxxxc. NULL A/A mux mode full chip erasers. Ignore block
locks in erase/write. Change comments from "PP mode" to "A/A mux mode"

Corresponding to flashrom svn r877.

Signed-off-by: Sean Nelson <audiohacked@gmail.com> 
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
This commit is contained in:
Sean Nelson
2010-01-20 20:55:53 +00:00
parent 21f5496361
commit 51c83fb2b2
5 changed files with 405 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
sst49lfxxxc.c
View File

@ -3,6 +3,7 @@
*
* Copyright (C) 2000 Silicon Integrated System Corporation
* Copyright (C) 2005-2007 coresystems GmbH
* Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -35,6 +36,15 @@
#define STATUS_ESS (1 << 6)
#define STATUS_WSMS (1 << 7)
int unlock_block_49lfxxxc(struct flashchip *flash, unsigned long address, unsigned char bits)
{
unsigned long lock = flash->virtual_registers + address + 2;
printf_debug("lockbits at address=0x%08lx is 0x%01x\n", lock, chip_readb(lock));
chip_writeb(bits, lock);
return 0;
}
static int write_lockbits_49lfxxxc(struct flashchip *flash, unsigned char bits)
{
chipaddr registers = flash->virtual_registers;
@ -72,7 +82,7 @@ static int write_lockbits_49lfxxxc(struct flashchip *flash, unsigned char bits)
return 0;
}
static int erase_sector_49lfxxxc(struct flashchip *flash, unsigned long address, int sector_size)
int erase_sector_49lfxxxc(struct flashchip *flash, unsigned int address, unsigned int sector_size)
{
unsigned char status;
chipaddr bios = flash->virtual_memory;
@ -97,6 +107,31 @@ static int erase_sector_49lfxxxc(struct flashchip *flash, unsigned long address,
return 0;
}
int erase_block_49lfxxxc(struct flashchip *flash, unsigned int address, unsigned int block_size)
{
unsigned char status;
chipaddr bios = flash->virtual_memory;
chip_writeb(BLOCK_ERASE, bios);
chip_writeb(ERASE, bios + address);
do {
status = chip_readb(bios);
if (status & (STATUS_ESS | STATUS_BPS)) {
printf("block erase FAILED at address=0x%08lx status=0x%01x\n", bios + address, status);
chip_writeb(CLEAR_STATUS, bios);
return (-1);
}
} while (!(status & STATUS_WSMS));
chip_writeb(RESET, bios);
if (check_erased_range(flash, address, block_size)) {
fprintf(stderr, "ERASE FAILED!\n");
return -1;
}
return 0;
}
static int write_sector_49lfxxxc(chipaddr bios, uint8_t *src, chipaddr dst,
unsigned int page_size)
{