Reset Pm49fl002/4's lockbits for write and erasing.
Signed-off-by: Nikolay Petukhov <[EMAIL PROTECTED]>
--
Nikolay
diff -Nru flashrom-2978/flashchips.c flashrom-2978-pm49fl00x/flashchips.c
--- flashrom-2978/flashchips.c 2007-10-30 05:56:50.000000000 +0500
+++ flashrom-2978-pm49fl00x/flashchips.c 2007-11-24 15:52:50.000000000 +0500
@@ -83,9 +83,9 @@
{"SST49LF160C", SST_ID, SST_49LF160C, 2048, 4 * 1024 ,
probe_49lfxxxc, erase_49lfxxxc, write_49lfxxxc},
{"Pm49FL002", PMC_ID, PMC_49FL002, 256, 16 * 1024,
- probe_jedec, erase_chip_jedec, write_49fl004},
+ probe_49fl00x, erase_49fl00x, write_49fl00x},
{"Pm49FL004", PMC_ID, PMC_49FL004, 512, 64 * 1024,
- probe_jedec, erase_chip_jedec, write_49fl004},
+ probe_49fl00x, erase_49fl00x, write_49fl00x},
{"W29C011", WINBOND_ID, W_29C011, 128, 128,
probe_jedec, erase_chip_jedec, write_jedec},
{"W29C040P", WINBOND_ID, W_29C040P, 512, 256,
diff -Nru flashrom-2978/flash.h flashrom-2978-pm49fl00x/flash.h
--- flashrom-2978/flash.h 2007-10-30 05:56:50.000000000 +0500
+++ flashrom-2978-pm49fl00x/flash.h 2007-11-24 15:53:37.000000000 +0500
@@ -290,9 +290,9 @@
int write_29f002(struct flashchip *flash, uint8_t *buf);
/* pm49fl004.c */
-int probe_49fl004(struct flashchip *flash);
-int erase_49fl004(struct flashchip *flash);
-int write_49fl004(struct flashchip *flash, uint8_t *buf);
+int probe_49fl00x(struct flashchip *flash);
+int erase_49fl00x(struct flashchip *flash);
+int write_49fl00x(struct flashchip *flash, uint8_t *buf);
/* sharplhf00l04.c */
int probe_lhf00l04(struct flashchip *flash);
diff -Nru flashrom-2978/pm49fl004.c flashrom-2978-pm49fl00x/pm49fl004.c
--- flashrom-2978/pm49fl004.c 2007-10-18 05:55:15.000000000 +0600
+++ flashrom-2978-pm49fl00x/pm49fl004.c 2007-11-24 16:13:06.000000000 +0500
@@ -2,6 +2,7 @@
* This file is part of the flashrom project.
*
* Copyright (C) 2004 Tyan Corporation
+ * Copyright (C) 2007 Nikolay Petukhov <[EMAIL PROTECTED]>
*
* 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
@@ -23,13 +24,58 @@
extern int exclude_start_page, exclude_end_page;
-int write_49fl004(struct flashchip *flash, uint8_t *buf)
+void write_lockbits_49fl00x(volatile uint8_t *bios, int size,
+ unsigned char bits, int block_size)
+{
+ int i, left = size;
+
+ for (i = 0; left >= block_size; i++, left -= block_size) {
+
+ /* pm49fl002 */
+ if (block_size == 16384 && i%2)
+ continue;
+
+ *(bios + (i * block_size) + 2) = bits;
+ }
+}
+
+int probe_49fl00x(struct flashchip *flash)
+{
+ int ret = probe_jedec(flash);
+
+ if (ret == 1)
+ map_flash_registers(flash);
+
+ return ret;
+}
+
+int erase_49fl00x(struct flashchip *flash)
+{
+ int total_size = flash->total_size * 1024;
+ int page_size = flash->page_size;
+ int ret;
+
+ /* unprotected */
+ write_lockbits_49fl00x(flash->virtual_registers, total_size, 0, page_size);
+
+ ret = erase_chip_jedec(flash);
+
+ /* protected */
+ write_lockbits_49fl00x(flash->virtual_registers, total_size, 1, page_size);
+
+ return ret;
+}
+
+int write_49fl00x(struct flashchip *flash, uint8_t *buf)
{
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
+ /* unprotected */
+ write_lockbits_49fl00x(flash->virtual_registers, total_size, 0, page_size);
+
printf("Programming page: ");
for (i = 0; i < total_size / page_size; i++) {
if ((i >= exclude_start_page) && (i < exclude_end_page))
@@ -46,6 +92,9 @@
fflush(stdout);
}
printf("\n");
+
+ /* protected */
+ write_lockbits_49fl00x(flash->virtual_registers, total_size, 1, page_size);
return 0;
}
--
linuxbios mailing list
[email protected]
http://www.linuxbios.org/mailman/listinfo/linuxbios
