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authorCarl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>2010-12-05 16:33:59 +0000
committerCarl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>2010-12-05 16:33:59 +0000
commit9188240a14d77a1ceb5ab07e61a8d3c602e7995d (patch)
tree39b925cc2b32ac0ca975cbfe24d9cdf8a3c175c8 /w39v080fa.c
parentdce73ae62212c7e22d28ee0d9e48aaccd1cab46a (diff)
downloadast2050-flashrom-9188240a14d77a1ceb5ab07e61a8d3c602e7995d.zip
ast2050-flashrom-9188240a14d77a1ceb5ab07e61a8d3c602e7995d.tar.gz
Add support for Winbond W39V040FB and W39V040FC
Print lock status for all supported Winbond W39* chips: W39V040A, W39V040B, W39V040C, W39V040FA, W39V040FB, W39V040FC, W39V080A, W39V080FA, W39V080FA (dual mode). Fill in correct probe timing for Winbond W39V040C and W39V080FA. Please note that the W39V040B/W39V040FB pair has identical IDs, identical read/write/erase, but locking differs. Same applies to W39V040C/W39V040FC. This causes double detection on chipsets which support LPC and FWH, making flashing more difficult because the user has to select the correct chip. This is called the evil twin problem. A better evil twin handling (patch available) will resolve that problem. Corresponding to flashrom svn r1245. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
Diffstat (limited to 'w39v080fa.c')
-rw-r--r--w39v080fa.c113
1 files changed, 0 insertions, 113 deletions
diff --git a/w39v080fa.c b/w39v080fa.c
deleted file mode 100644
index 62c55f4..0000000
--- a/w39v080fa.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * This file is part of the flashrom project.
- *
- * Copyright (C) 2008 coresystems GmbH
- *
- * 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"
-
-static int unlock_block_winbond_fwhub(struct flashchip *flash, int offset)
-{
- chipaddr wrprotect = flash->virtual_registers + offset + 2;
- uint8_t locking;
-
- msg_cdbg("Trying to unlock block @0x%08x = 0x%02x\n", offset,
- chip_readb(wrprotect));
-
- locking = chip_readb(wrprotect);
- switch (locking & 0x7) {
- case 0:
- msg_cdbg("Full Access.\n");
- return 0;
- case 1:
- msg_cdbg("Write Lock (Default State).\n");
- chip_writeb(0, wrprotect);
- return 0;
- case 2:
- msg_cdbg("Locked Open (Full Access, Lock Down).\n");
- return 0;
- case 3:
- msg_cerr("Error: Write Lock, Locked Down.\n");
- return -1;
- case 4:
- msg_cdbg("Read Lock.\n");
- chip_writeb(0, wrprotect);
- return 0;
- case 5:
- msg_cdbg("Read/Write Lock.\n");
- chip_writeb(0, wrprotect);
- return 0;
- case 6:
- msg_cerr("Error: Read Lock, Locked Down.\n");
- return -1;
- case 7:
- msg_cerr("Error: Read/Write Lock, Locked Down.\n");
- return -1;
- }
-
- /* We will never reach this point, but GCC doesn't know */
- return -1;
-}
-
-int unlock_winbond_fwhub(struct flashchip *flash)
-{
- int i, total_size = flash->total_size * 1024;
- chipaddr bios = flash->virtual_memory;
- uint8_t locking;
-
- /* Are there any hardware restrictions that we can't overcome?
- * If flashrom fail here, someone's got to check all those GPIOs.
- */
-
- /* Product Identification Entry */
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0x90, bios + 0x5555);
- programmer_delay(10);
-
- /* Read Hardware Lock Bits */
- locking = chip_readb(bios + 0xffff2);
-
- /* Product Identification Exit */
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0xF0, bios + 0x5555);
- programmer_delay(10);
-
- msg_cdbg("Lockout bits:\n");
-
- if (locking & (1 << 2))
- msg_cerr("Error: hardware bootblock locking (#TBL).\n");
- else
- msg_cdbg("No hardware bootblock locking (good!)\n");
-
- if (locking & (1 << 3))
- msg_cerr("Error: hardware block locking (#WP).\n");
- else
- msg_cdbg("No hardware block locking (good!)\n");
-
- if (locking & ((1 << 2) | (1 << 3)))
- return -1;
-
- /* Unlock the complete chip */
- for (i = 0; i < total_size; i += flash->page_size)
- if (unlock_block_winbond_fwhub(flash, i))
- return -1;
-
- return 0;
-}
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