1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2000 Silicon Integrated System Corporation
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "flash.h"
#include "chipdrivers.h"
/* FIXME: The datasheet is unclear whether we should use toggle_ready_jedec
* or wait_82802ab.
* FIXME: This file is unused.
*/
int erase_lhf00l04_block(struct flashchip *flash, unsigned int blockaddr, unsigned int blocklen)
{
chipaddr bios = flash->virtual_memory + blockaddr;
chipaddr wrprotect = flash->virtual_registers + blockaddr + 2;
uint8_t status;
// clear status register
chip_writeb(0x50, bios);
status = wait_82802ab(flash);
print_status_82802ab(status);
// clear write protect
msg_cspew("write protect is at 0x%lx\n", (wrprotect));
msg_cspew("write protect is 0x%x\n", chip_readb(wrprotect));
chip_writeb(0, wrprotect);
msg_cspew("write protect is 0x%x\n", chip_readb(wrprotect));
// now start it
chip_writeb(0x20, bios);
chip_writeb(0xd0, bios);
programmer_delay(10);
// now let's see what the register is
status = wait_82802ab(flash);
print_status_82802ab(status);
/* FIXME: Check the status register for errors. */
return 0;
}
|
