[flashrom] [PATCH] Print lock status for Winbond W39*
Carl-Daniel Hailfinger
c-d.hailfinger.devel.2006 at gmx.net
Sat Dec 4 04:12:33 CET 2010
Print lock status for all supported Winbond W39* chips:
W39V040A
W39V040(F)B
W39V040(F)C
W39V040FA
W39V080A
W39V080FA
W39V080FA (dual mode)
Please note that the W39V040B/W39V040FB pair has identical IDs,
identical read/write/erase, but locking differs. Right now they have a
common chip definition, but that will have to change in the future. For
chipsets which support LPC and FWH, separating the chips will be really
painful because both variants will be detected and the user will have to
choose. Same problem appears for W39V040C/W39V040FC.
A better evil twin handling (patch available) will resolve that problem.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>
Please run "svn mv w39v080fa.c w39.c" before applying this patch.
Index: flashrom-w39_printlock/w39.c
===================================================================
--- flashrom-w39_printlock/w39.c (Revision 1241)
+++ flashrom-w39_printlock/w39.c (Arbeitskopie)
@@ -2,6 +2,7 @@
* This file is part of the flashrom project.
*
* Copyright (C) 2008 coresystems GmbH
+ * Copyright (C) 2010 Carl-Daniel Hailfinger
*
* 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
@@ -21,67 +22,78 @@
#include "flash.h"
#include "chipdrivers.h"
-static int unlock_block_winbond_fwhub(struct flashchip *flash, int offset)
+static int printlock_w39_fwh_block(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);
+ msg_cdbg("Lock status of block at 0x%08x is ", offset);
switch (locking & 0x7) {
case 0:
msg_cdbg("Full Access.\n");
- return 0;
+ break;
case 1:
msg_cdbg("Write Lock (Default State).\n");
- chip_writeb(0, wrprotect);
- return 0;
+ break;
case 2:
msg_cdbg("Locked Open (Full Access, Lock Down).\n");
- return 0;
+ break;
case 3:
msg_cerr("Error: Write Lock, Locked Down.\n");
- return -1;
+ break;
case 4:
msg_cdbg("Read Lock.\n");
- chip_writeb(0, wrprotect);
- return 0;
+ break;
case 5:
msg_cdbg("Read/Write Lock.\n");
- chip_writeb(0, wrprotect);
- return 0;
+ break;
case 6:
msg_cerr("Error: Read Lock, Locked Down.\n");
- return -1;
+ break;
case 7:
msg_cerr("Error: Read/Write Lock, Locked Down.\n");
- return -1;
+ break;
}
- /* We will never reach this point, but GCC doesn't know */
- return -1;
+ /* Read or write lock present? */
+ return (locking & ((1 << 2) | (1 << 0))) ? -1 : 0;
}
-int unlock_winbond_fwhub(struct flashchip *flash)
+static int unlock_w39_fwh_block(struct flashchip *flash, int offset)
{
- int i, total_size = flash->total_size * 1024;
- chipaddr bios = flash->virtual_memory;
+ chipaddr wrprotect = flash->virtual_registers + offset + 2;
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.
- */
+ locking = chip_readb(wrprotect);
+ /* Read or write lock present? */
+ if (locking & ((1 << 2) | (1 << 0))) {
+ /* Lockdown active? */
+ if (locking & (1 << 1)) {
+ msg_cerr("Can't unlock block at 0x%x!\n", offset);
+ return -1;
+ } else {
+ msg_cdbg("Unlocking block at 0x%x\n", offset);
+ chip_writeb(0, wrprotect);
+ }
+ }
+ return 0;
+}
+
+static uint8_t w39_idmode_readb(struct flashchip *flash, int offset)
+{
+ chipaddr bios = flash->virtual_memory;
+ uint8_t val;
+
/* 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);
+ /* Read something, maybe hardware lock bits */
+ val = chip_readb(bios + offset);
/* Product Identification Exit */
chip_writeb(0xAA, bios + 0x5555);
@@ -89,25 +101,164 @@
chip_writeb(0xF0, bios + 0x5555);
programmer_delay(10);
- msg_cdbg("Lockout bits:\n");
+ return val;
+}
- if (locking & (1 << 2))
- msg_cerr("Error: hardware bootblock locking (#TBL).\n");
- else
- msg_cdbg("No hardware bootblock locking (good!)\n");
+static int printlock_w39_wblwp(uint8_t lock)
+{
+ msg_cdbg("Hardware bootblock locking (#TBL) is %sactive.\n",
+ (lock & (1 << 2)) ? "" : "not ");
+ msg_cdbg("Hardware remaining chip locking (#WP) is %sactive..\n",
+ (lock & (1 << 3)) ? "" : "not ");
+ if (lock & ((1 << 2) | (1 << 3)))
+ return -1;
- if (locking & (1 << 3))
- msg_cerr("Error: hardware block locking (#WP).\n");
- else
- msg_cdbg("No hardware block locking (good!)\n");
+ return 0;
+}
- if (locking & ((1 << 2) | (1 << 3)))
+static int printlock_w39_bootblock_64k16k(uint8_t lock)
+{
+ msg_cdbg("Software 64 kB bootblock locking is %sactive.\n",
+ (lock & (1 << 0)) ? "" : "not ");
+ msg_cdbg("Software 16 kB bootblock locking is %sactive.\n",
+ (lock & (1 << 1)) ? "" : "not ");
+ if (lock & ((1 << 1) | (1 << 0)))
return -1;
+ return 0;
+}
+
+static int printlock_w39_common(struct flashchip *flash, int offset)
+{
+ uint8_t lock;
+
+ lock = w39_idmode_readb(flash, offset);
+ msg_cdbg("Lockout bits:\n");
+ return printlock_w39_wblwp(lock);
+}
+
+static int printlock_w39_fwh(struct flashchip *flash)
+{
+ int i, total_size = flash->total_size * 1024;
+
+ /* Print lock status of the complete chip */
+ for (i = 0; i < total_size; i += flash->page_size)
+ if (printlock_w39_fwh_block(flash, i))
+ return -1;
+
+ return 0;
+}
+
+static int unlock_w39_fwh(struct flashchip *flash)
+{
+ int i, total_size = flash->total_size * 1024;
+
/* Unlock the complete chip */
for (i = 0; i < total_size; i += flash->page_size)
- if (unlock_block_winbond_fwhub(flash, i))
+ if (unlock_w39_fwh_block(flash, i))
return -1;
return 0;
}
+
+int printlock_w39v040a(struct flashchip *flash)
+{
+ uint8_t lock;
+ int ret = 0;
+
+ /* The W39V040A datasheet contradicts itself on the lock register
+ * location: 0x00002 and 0x7fff2 are both mentioned. Pick the one
+ * which is similar to the other chips of the same family.
+ */
+ lock = w39_idmode_readb(flash, 0x7fff2);
+ msg_cdbg("Lockout bits:\n");
+
+ ret = printlock_w39_wblwp(lock);
+ ret |= printlock_w39_bootblock_64k16k(lock);
+
+ return ret;
+}
+
+int printlock_w39v040b(struct flashchip *flash)
+{
+ return printlock_w39_common(flash, 0x7fff2);
+}
+
+int printlock_w39v040c(struct flashchip *flash)
+{
+ return printlock_w39_common(flash, 0xfff2);
+}
+
+int printlock_w39v040fa(struct flashchip *flash)
+{
+ int ret = 0;
+
+ ret = printlock_w39v040a(flash);
+ ret |= printlock_w39_fwh(flash);
+
+ return ret;
+}
+
+/* Unused because W39V040B and W39V040FB can not be distinguished from each
+ * other based on ID.
+ */
+int printlock_w39v040fb(struct flashchip *flash)
+{
+ int ret = 0;
+
+ ret = printlock_w39v040b(flash);
+ ret |= printlock_w39_fwh(flash);
+
+ return ret;
+}
+
+/* Unused because W39V040C and W39V040FC can not be distinguished from each
+ * other based on ID.
+ */
+int printlock_w39v040fc(struct flashchip *flash)
+{
+ int ret = 0;
+
+ /* W39V040C and W39V040FC use different WP/TBL offsets. */
+ ret = printlock_w39_common(flash, 0x7fff2);
+ ret |= printlock_w39_fwh(flash);
+
+ return ret;
+}
+
+int printlock_w39v080a(struct flashchip *flash)
+{
+ return printlock_w39_common(flash, 0xffff2);
+}
+
+int printlock_w39v080fa(struct flashchip *flash)
+{
+ int ret = 0;
+
+ ret = printlock_w39v080a(flash);
+ ret |= printlock_w39_fwh(flash);
+
+ return ret;
+}
+
+int printlock_w39v080fa_dual(struct flashchip *flash)
+{
+ msg_cinfo("Block locking for W39V080FA in dual mode is "
+ "undocumented.\n");
+ /* Better safe than sorry. */
+ return -1;
+}
+
+int unlock_w39v080fa(struct flashchip *flash)
+{
+ if (unlock_w39_fwh(flash))
+ return -1;
+ /* The soft bootblock locks may have been deactivated by the unlock
+ * above, so check them last.
+ */
+ if (printlock_w39_common(flash, 0xffff2))
+ return -1;
+
+ return 0;
+}
+
Index: flashrom-w39_printlock/Makefile
===================================================================
--- flashrom-w39_printlock/Makefile (Revision 1241)
+++ flashrom-w39_printlock/Makefile (Arbeitskopie)
@@ -82,7 +82,7 @@
endif
endif
-CHIP_OBJS = jedec.o stm50flw0x0x.o w39v040c.o w39v080fa.o w29ee011.o \
+CHIP_OBJS = jedec.o stm50flw0x0x.o w39.o w29ee011.o \
sst28sf040.o m29f400bt.o 82802ab.o pm49fl00x.o \
sst49lfxxxc.o sst_fwhub.o flashchips.o spi.o spi25.o sharplhf00l04.o
Index: flashrom-w39_printlock/w39v040c.c
===================================================================
--- flashrom-w39_printlock/w39v040c.c (Revision 1241)
+++ flashrom-w39_printlock/w39v040c.c (Arbeitskopie)
@@ -1,48 +0,0 @@
-/*
- * This file is part of the flashrom project.
- *
- * Copyright (C) 2008 Peter Stuge <peter at stuge.se>
- *
- * 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"
-
-int printlock_w39v040c(struct flashchip *flash)
-{
- chipaddr bios = flash->virtual_memory;
- uint8_t lock;
-
- chip_writeb(0xAA, bios + 0x5555);
- programmer_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- programmer_delay(10);
- chip_writeb(0x90, bios + 0x5555);
- programmer_delay(10);
-
- lock = chip_readb(bios + 0xfff2);
-
- chip_writeb(0xAA, bios + 0x5555);
- programmer_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- programmer_delay(10);
- chip_writeb(0xF0, bios + 0x5555);
- programmer_delay(40);
-
- msg_cdbg("%s: Boot block #TBL is %slocked, rest of chip #WP is %slocked.\n",
- __func__, lock & 0x4 ? "" : "un", lock & 0x8 ? "" : "un");
- return 0;
-}
Index: flashrom-w39_printlock/flashchips.c
===================================================================
--- flashrom-w39_printlock/flashchips.c (Revision 1241)
+++ flashrom-w39_printlock/flashchips.c (Arbeitskopie)
@@ -7593,6 +7593,7 @@
.block_erase = erase_chip_block_jedec,
}
},
+ .printlock = printlock_w39v040a,
.write = write_jedec_1,
.read = read_memmapped,
},
@@ -7600,7 +7601,7 @@
{
.vendor = "Winbond",
.name = "W39V040(F)B",
- .bustype = CHIP_BUSTYPE_LPC,
+ .bustype = CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH,
.manufacture_id = WINBOND_ID,
.model_id = WINBOND_W39V040B,
.total_size = 512,
@@ -7619,6 +7620,7 @@
.block_erase = erase_chip_block_jedec,
}
},
+ .printlock = printlock_w39v040b,
.write = write_jedec_1,
.read = read_memmapped,
},
@@ -7626,7 +7628,7 @@
{
.vendor = "Winbond",
.name = "W39V040(F)C",
- .bustype = CHIP_BUSTYPE_LPC,
+ .bustype = CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH,
.manufacture_id = WINBOND_ID,
.model_id = WINBOND_W39V040C,
.total_size = 512,
@@ -7634,7 +7636,7 @@
.feature_bits = FEATURE_EITHER_RESET,
.tested = TEST_UNTESTED,
.probe = probe_jedec,
- .probe_timing = TIMING_FIXME,
+ .probe_timing = 10,
.block_erasers =
{
{
@@ -7675,7 +7677,7 @@
.block_erase = erase_chip_block_jedec,
}
},
- .printlock = printlock_sst_fwhub,
+ .printlock = printlock_w39v040fa,
.unlock = unlock_sst_fwhub,
.write = write_jedec_1,
.read = read_memmapped,
@@ -7703,6 +7705,7 @@
.block_erase = erase_chip_block_jedec,
}
},
+ .printlock = printlock_w39v080a,
.write = write_jedec_1,
.read = read_memmapped,
},
@@ -7834,7 +7837,7 @@
.feature_bits = FEATURE_REGISTERMAP | FEATURE_EITHER_RESET,
.tested = TEST_OK_PRE,
.probe = probe_jedec,
- .probe_timing = TIMING_FIXME,
+ .probe_timing = 10,
.block_erasers =
{
{
@@ -7845,7 +7848,8 @@
.block_erase = erase_chip_block_jedec,
}
},
- .unlock = unlock_winbond_fwhub,
+ .printlock = printlock_w39v080fa,
+ .unlock = unlock_w39v080fa,
.write = write_jedec_1,
.read = read_memmapped,
},
@@ -7861,7 +7865,7 @@
.feature_bits = FEATURE_REGISTERMAP | FEATURE_EITHER_RESET,
.tested = TEST_UNTESTED,
.probe = probe_jedec,
- .probe_timing = TIMING_FIXME,
+ .probe_timing = 10,
.block_erasers =
{
{
@@ -7872,7 +7876,7 @@
.block_erase = erase_chip_block_jedec,
}
},
- .unlock = unlock_winbond_fwhub,
+ .printlock = printlock_w39v080fa_dual,
.write = write_jedec_1,
.read = read_memmapped,
},
Index: flashrom-w39_printlock/w39v080fa.c
===================================================================
--- flashrom-w39_printlock/w39v080fa.c (Revision 1241)
+++ flashrom-w39_printlock/w39v080fa.c (Arbeitskopie)
@@ -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;
-}
Index: flashrom-w39_printlock/chipdrivers.h
===================================================================
--- flashrom-w39_printlock/chipdrivers.h (Revision 1241)
+++ flashrom-w39_printlock/chipdrivers.h (Arbeitskopie)
@@ -109,12 +109,16 @@
int printlock_sst_fwhub(struct flashchip *flash);
int unlock_sst_fwhub(struct flashchip *flash);
-/* w39v040c.c */
+/* w39.c */
+int printlock_w39v040a(struct flashchip *flash);
+int printlock_w39v040b(struct flashchip *flash);
int printlock_w39v040c(struct flashchip *flash);
+int printlock_w39v040fa(struct flashchip *flash);
+int printlock_w39v080a(struct flashchip *flash);
+int printlock_w39v080fa(struct flashchip *flash);
+int printlock_w39v080fa_dual(struct flashchip *flash);
+int unlock_w39v080fa(struct flashchip *flash);
-/* w39V080fa.c */
-int unlock_winbond_fwhub(struct flashchip *flash);
-
/* w29ee011.c */
int probe_w29ee011(struct flashchip *flash);
--
http://www.hailfinger.org/
More information about the flashrom
mailing list