Support Pm49FL004/2 Block Locking Registers
The PMC chips understand both LPC and FWH flash commands. When in FWH mode
(MSR_DIVIL_BALL_OPT(0x51400015) = 0x00000f7d on 5536 boards) the Block
Locking Registers by default lock the flash chip for write and erase - in
addition to any chipset write protection.
This patch adds unlock operations before Pm49FL004/2 write and erase, and
it includes an svn mv pm49fl004.c pm49fl00x.c
Thanks go to Nikolay for this patch.
Corresponding to flashrom svn r243 and coreboot v2 svn r3332.
Signed-off-by: Nikolay Petukhov <nikolay.petukhov@gmail.com>
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Bari Ari <bari@onelabs.com>
diff --git a/Makefile b/Makefile
index 35b891d..a645d4c 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@
OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.c \
sst28sf040.o am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o \
- w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o \
+ w49f002u.o 82802ab.o msys_doc.o pm49fl00x.o sst49lf040.o \
sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o \
flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o it87spi.o \
ichspi.o
diff --git a/flash.h b/flash.h
index 673643f..a3740ee 100644
--- a/flash.h
+++ b/flash.h
@@ -453,10 +453,10 @@
int erase_29f002(struct flashchip *flash);
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);
+/* pm49fl00x.c */
+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 --git a/flashchips.c b/flashchips.c
index 50a498d..eeb4a8a 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -64,8 +64,8 @@
{"PMC", "Pm25LV040", PMC_ID, PMC_25LV040, 512, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV080B", PMC_ID, PMC_25LV080B, 1024, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV512", PMC_ID, PMC_25LV512, 64, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
- {"PMC", "Pm49FL002", PMC_ID_NOPREFIX,PMC_49FL002, 256, 16 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49fl004},
- {"PMC", "Pm49FL004", PMC_ID_NOPREFIX,PMC_49FL004, 512, 64 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49fl004},
+ {"PMC", "Pm49FL002", PMC_ID_NOPREFIX,PMC_49FL002, 256, 16 * 1024, TEST_UNTESTED, probe_49fl00x, erase_49fl00x, write_49fl00x},
+ {"PMC", "Pm49FL004", PMC_ID_NOPREFIX,PMC_49FL004, 512, 64 * 1024, TEST_OK_PREW, probe_49fl00x, erase_49fl00x, write_49fl00x},
{"Sharp", "LHF00L04", SHARP_ID, SHARP_LHF00L04, 1024, 64 * 1024, TEST_UNTESTED, probe_lhf00l04, erase_lhf00l04, write_lhf00l04},
{"Spansion", "S25FL016A", SPANSION_ID, SPANSION_S25FL016A, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"SST", "SST25VF016B", SST_ID, SST_25VF016B, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
diff --git a/pm49fl004.c b/pm49fl004.c
deleted file mode 100644
index e5fcd66..0000000
--- a/pm49fl004.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * This file is part of the flashrom project.
- *
- * Copyright (C) 2004 Tyan 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 <stdio.h>
-#include "flash.h"
-
-extern int exclude_start_page, exclude_end_page;
-
-int write_49fl004(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;
-
- printf("Programming page: ");
- for (i = 0; i < total_size / page_size; i++) {
- if ((i >= exclude_start_page) && (i < exclude_end_page))
- continue;
-
- /* erase the page before programming */
- erase_block_jedec(bios, i * page_size);
-
- /* write to the sector */
- printf("%04d at address: 0x%08x", i, i * page_size);
- write_sector_jedec(bios, buf + i * page_size,
- bios + i * page_size, page_size);
- printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
- fflush(stdout);
- }
- printf("\n");
-
- return 0;
-}
diff --git a/pm49fl00x.c b/pm49fl00x.c
new file mode 100644
index 0000000..ed2fed0
--- /dev/null
+++ b/pm49fl00x.c
@@ -0,0 +1,114 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2004 Tyan Corporation
+ * Copyright (C) 2007 Nikolay Petukhov <nikolay.petukhov@gmail.com>
+ * Copyright (C) 2007 Reinder E.N. de Haan <lb_reha@mveas.com>
+ *
+ * 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 <stdio.h>
+#include "flash.h"
+
+extern int exclude_start_page, exclude_end_page;
+
+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 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);
+
+ //erase_chip_jedec will not work ... datasheet says "Chip erase is available in A/A Mux Mode only"
+ printf("Erasing page: ");
+ for (i = 0; i < total_size / page_size; i++) {
+ if ((i >= exclude_start_page) && (i < exclude_end_page))
+ continue;
+
+ /* erase the page */
+ erase_block_jedec(bios, i * page_size);
+ printf("%04d at address: 0x%08x", i, i * page_size);
+ printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+ fflush(stdout);
+ }
+ printf("\n");
+
+ /* protected */
+ write_lockbits_49fl00x(flash->virtual_registers, total_size, 1, page_size);
+
+ return 0;
+}
+
+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))
+ continue;
+
+ /* erase the page before programming */
+ erase_block_jedec(bios, i * page_size);
+
+ /* write to the sector */
+ printf("%04d at address: 0x%08x", i, i * page_size);
+ write_sector_jedec(bios, buf + i * page_size,
+ bios + i * page_size, page_size);
+ printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+ fflush(stdout);
+ }
+ printf("\n");
+
+ /* protected */
+ write_lockbits_49fl00x(flash->virtual_registers, total_size, 1, page_size);
+
+ return 0;
+}