mirror of
https://review.coreboot.org/flashrom.git
synced 2025-11-13 19:20:41 +01:00
c09a2f5387
Change-Id: Ic24a54ab520053e49efcba02bd9fa5b8ce69b20a Signed-off-by: Anastasia Klimchuk <aklm@flashrom.org> Reviewed-on: https://review.coreboot.org/c/flashrom/+/89956 Reviewed-by: Antonio Vázquez Blanco <antoniovazquezblanco@gmail.com> Reviewed-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/*
|
|
* This file is part of the flashrom project.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
* SPDX-FileCopyrightText: 2000 Silicon Integrated System Corporation
|
|
* SPDX-FileCopyrightText: 2009 Kontron Modular Computers
|
|
* SPDX-FileCopyrightText: 2009 Sean Nelson <audiohacked@gmail.com>
|
|
*/
|
|
|
|
/* Adapted from the Intel FW hub stuff for 82802ax parts. */
|
|
|
|
#include "flash.h"
|
|
#include "parallel.h"
|
|
#include "chipdrivers.h"
|
|
|
|
static int check_sst_fwhub_block_lock(struct flashctx *flash, unsigned int offset)
|
|
{
|
|
chipaddr registers = flash->virtual_registers;
|
|
uint8_t blockstatus;
|
|
|
|
blockstatus = chip_readb(flash, registers + offset + 2);
|
|
msg_cdbg("Lock status for 0x%06x (size 0x%06x) is %02x, ",
|
|
offset, flash->chip->page_size, blockstatus);
|
|
switch (blockstatus & 0x3) {
|
|
case 0x0:
|
|
msg_cdbg("full access\n");
|
|
break;
|
|
case 0x1:
|
|
msg_cdbg("write locked\n");
|
|
break;
|
|
case 0x2:
|
|
msg_cdbg("locked open\n");
|
|
break;
|
|
case 0x3:
|
|
msg_cdbg("write locked down\n");
|
|
break;
|
|
}
|
|
/* Return content of the write_locked bit */
|
|
return blockstatus & 0x1;
|
|
}
|
|
|
|
static int clear_sst_fwhub_block_lock(struct flashctx *flash, unsigned int offset)
|
|
{
|
|
chipaddr registers = flash->virtual_registers;
|
|
uint8_t blockstatus;
|
|
|
|
blockstatus = check_sst_fwhub_block_lock(flash, offset);
|
|
|
|
if (blockstatus) {
|
|
msg_cdbg("Trying to clear lock for 0x%06x... ", offset);
|
|
chip_writeb(flash, 0, registers + offset + 2);
|
|
|
|
blockstatus = check_sst_fwhub_block_lock(flash, offset);
|
|
msg_cdbg("%s\n", (blockstatus) ? "failed" : "OK");
|
|
}
|
|
|
|
return blockstatus;
|
|
}
|
|
|
|
int printlock_sst_fwhub(struct flashctx *flash)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < flash->chip->total_size * 1024; i += flash->chip->page_size)
|
|
check_sst_fwhub_block_lock(flash, i);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int unlock_sst_fwhub(struct flashctx *flash)
|
|
{
|
|
unsigned int i;
|
|
int ret = 0;
|
|
|
|
for (i = 0; i < flash->chip->total_size * 1024; i += flash->chip->page_size)
|
|
{
|
|
if (clear_sst_fwhub_block_lock(flash, i))
|
|
{
|
|
msg_cwarn("Warning: Unlock Failed for block 0x%06x\n", i);
|
|
ret++;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|