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authorSean Nelson <audiohacked@gmail.com>2010-01-20 20:55:53 +0000
committerSean Nelson <audiohacked@gmail.com>2010-01-20 20:55:53 +0000
commit51c83fb2b204a369e1b1825b66c56e5babcf8022 (patch)
treeaf901ed6d2a2214445035d483c29492217ee7727 /sst49lfxxxc.c
parent21f54963611aa0f3ee3ad16a45395d0cec8363f1 (diff)
downloadast2050-flashrom-51c83fb2b204a369e1b1825b66c56e5babcf8022.zip
ast2050-flashrom-51c83fb2b204a369e1b1825b66c56e5babcf8022.tar.gz
Convert various SST chips to use block_erasers
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>
Diffstat (limited to 'sst49lfxxxc.c')
-rw-r--r--sst49lfxxxc.c37
1 files changed, 36 insertions, 1 deletions
diff --git a/sst49lfxxxc.c b/sst49lfxxxc.c
index a421acf..80e5520 100644
--- a/sst49lfxxxc.c
+++ b/sst49lfxxxc.c
@@ -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)
{
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