Support for sst firmware hub
Corresponding to flashrom svn r25 and coreboot v2 svn r1651.
diff --git a/Makefile b/Makefile
index d87cde2..9d4124f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
OBJS = flash_enable.o udelay.o jedec.o sst28sf040.o am29f040b.o mx29f002.c sst39sf020.o \
- m29f400bt.o w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o
+ m29f400bt.o w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o sst_fwhub.o
CC = gcc -O2 -g -Wall -Werror
all: flash_rom flash_on
diff --git a/flash_rom.c b/flash_rom.c
index 6abd489..3fd56e3 100644
--- a/flash_rom.c
+++ b/flash_rom.c
@@ -46,6 +46,7 @@
#include "sst49lf040.h"
#include "pm49fl004.h"
#include "mx29f002.h"
+#include "sst_fwhub.h"
struct flashchip flashchips[] = {
{"Am29F040B", AMD_ID, AM_29F040B, NULL, 512, 64 * 1024,
@@ -73,7 +74,7 @@
{"SST49LF004A", SST_ID, SST_49LF004A, NULL, 512, 4096,
probe_jedec, erase_chip_jedec, write_49lf040,NULL},
{"SST49LF008A", SST_ID, SST_49LF008A, NULL, 1024, 4096,
- probe_jedec, erase_chip_jedec, write_49lf040,NULL},
+ probe_sst_fwhub, erase_sst_fwhub, write_sst_fwhub, NULL},
{"Pm49FL004", PMC_ID, PMC_49FL004, NULL, 512, 64 * 1024,
probe_jedec, erase_chip_jedec, write_49fl004,NULL},
{"W29C011", WINBOND_ID, W_29C011, NULL, 128, 128,
diff --git a/jedec.c b/jedec.c
index d99e774..19a233b 100644
--- a/jedec.c
+++ b/jedec.c
@@ -89,6 +89,35 @@
return (0);
}
+int erase_block_jedec(volatile unsigned char *bios, unsigned int block)
+{
+ volatile unsigned char *Temp;
+
+ /* Issue the Sector Erase command */
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0xAA; /* write data 0xAA to the address */
+ myusec_delay(10);
+ Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
+ *Temp = 0x55; /* write data 0x55 to the address */
+ myusec_delay(10);
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0x80; /* write data 0x80 to the address */
+ myusec_delay(10);
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0xAA; /* write data 0xAA to the address */
+ myusec_delay(10);
+ Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
+ *Temp = 0x55; /* write data 0x55 to the address */
+ myusec_delay(10);
+ Temp = bios + block; /* set up address to be the current sector */
+ *Temp = 0x50; /* write data 0x30 to the address */
+ myusec_delay(10);
+
+ /* wait for Toggle bit ready */
+ toggle_ready_jedec(bios);
+
+ return (0);
+}
int erase_chip_jedec(struct flashchip *flash)
{
diff --git a/jedec.h b/jedec.h
index 756605e..2a9f977 100644
--- a/jedec.h
+++ b/jedec.h
@@ -1,10 +1,13 @@
#ifndef __JEDEC_H__
#define __JEDEC_H__ 1
+int write_byte_program_jedec(volatile unsigned char *bios, unsigned char *src,
+ volatile unsigned char *dst);
extern int probe_jedec(struct flashchip *flash);
extern int erase_chip_jedec(struct flashchip *flash);
extern int write_jedec(struct flashchip *flash, unsigned char *buf);
extern int erase_sector_jedec(volatile unsigned char *bios, unsigned int page);
+extern int erase_block_jedec(volatile unsigned char *bios, unsigned int page);
extern int write_sector_jedec(volatile unsigned char *bios, unsigned char *src,
volatile unsigned char *dst,
unsigned int page_size);
diff --git a/sst_fwhub.c b/sst_fwhub.c
new file mode 100644
index 0000000..7ab6bdb
--- /dev/null
+++ b/sst_fwhub.c
@@ -0,0 +1,178 @@
+/*
+ * adapted from the Intel FW hub stuff for 82802ax parts.
+ *
+ *
+ * Copyright 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * $Id$
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/io.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "flash.h"
+#include "jedec.h"
+#include "sst_fwhub.h"
+
+// I need that Berkeley bit-map printer
+void print_sst_fwhub_status(unsigned char status)
+{
+ printf("%s", status & 0x80 ? "Ready:" : "Busy:");
+ printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
+ printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
+ printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
+ printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
+ printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
+ printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
+}
+
+/* probe_jedec works fine for probing */
+
+int probe_sst_fwhub(struct flashchip *flash)
+{
+ volatile unsigned char *bios = flash->virt_addr;
+ unsigned char id1, id2;
+ size_t size = flash->total_size * 1024;
+ /* Issue JEDEC Product ID Entry command */
+ *(volatile char *) (bios + 0x5555) = 0xAA;
+ myusec_delay(10);
+ *(volatile char *) (bios + 0x2AAA) = 0x55;
+ myusec_delay(10);
+ *(volatile char *) (bios + 0x5555) = 0x90;
+ myusec_delay(10);
+
+ /* Read product ID */
+ id1 = *(volatile unsigned char *) bios;
+ id2 = *(volatile unsigned char *) (bios + 0x01);
+
+ /* Issue JEDEC Product ID Exit command */
+ *(volatile char *) (bios + 0x5555) = 0xAA;
+ myusec_delay(10);
+ *(volatile char *) (bios + 0x2AAA) = 0x55;
+ myusec_delay(10);
+ *(volatile char *) (bios + 0x5555) = 0xF0;
+ myusec_delay(10);
+
+ printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
+ if (id1 != flash->manufacture_id || id2 != flash->model_id)
+ return 0;
+
+ myusec_delay(10);
+
+
+
+ // we need to mmap the write-protect space.
+ bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+ flash->fd_mem, (off_t) (0 - 0x400000 - size));
+ if (bios == MAP_FAILED) {
+ // it's this part but we can't map it ...
+ perror("Error MMAP /dev/mem");
+ exit(1);
+ }
+
+ flash->virt_addr_2 = bios;
+ return 1;
+}
+
+unsigned char wait_sst_fwhub(volatile unsigned char *bios)
+{
+
+
+
+ toggle_ready_jedec(bios);
+ return 0;
+}
+
+int erase_sst_fwhub_block(struct flashchip *flash, int offset)
+{
+ volatile unsigned char *bios = flash->virt_addr + offset;
+ volatile unsigned char *wrprotect =
+ flash->virt_addr_2 + offset + 2;
+ unsigned char status;
+
+ // clear status register
+ printf("Erase at %p\n", bios);
+ // clear write protect
+ printf("write protect is at %p\n", (wrprotect));
+ printf("write protect is 0x%x\n", *(wrprotect));
+ *(wrprotect) = 0;
+ printf("write protect is 0x%x\n", *(wrprotect));
+
+ erase_block_jedec(flash->virt_addr, offset);
+ status = wait_sst_fwhub(flash->virt_addr);
+ //print_sst_fwhub_status(status);
+ printf("DONE BLOCK 0x%x\n", offset);
+ return (0);
+}
+
+int erase_sst_fwhub(struct flashchip *flash)
+{
+ int i;
+ unsigned int total_size = flash->total_size * 1024;
+
+ printf("total_size is %d; flash->page_size is %d\n",
+ total_size, flash->page_size);
+ for (i = 0; i < total_size; i += flash->page_size)
+ erase_sst_fwhub_block(flash, i);
+ printf("DONE ERASE\n");
+ return (0);
+}
+
+void write_page_sst_fwhub(volatile char *bios, char *src, volatile char *dst,
+ int page_size)
+{
+ int i;
+
+ for (i = 0; i < page_size; i++) {
+ /* transfer data from source to destination */
+ write_byte_program_jedec(bios, src, dst);
+ src++;
+ dst++;
+ }
+
+}
+
+int write_sst_fwhub(struct flashchip *flash, unsigned char *buf)
+{
+ int i;
+ int total_size = flash->total_size * 1024, page_size =
+ flash->page_size;
+ volatile unsigned char *bios = flash->virt_addr;
+
+ erase_sst_fwhub(flash);
+ if (*bios != 0xff) {
+ printf("ERASE FAILED\n");
+ return -1;
+ }
+ printf("Programming Page: ");
+ for (i = 0; i < total_size / page_size; i++) {
+ printf("%04d at address: 0x%08x", i, i * page_size);
+ write_page_sst_fwhub(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");
+ }
+ printf("\n");
+ protect_sst_fwhub(bios);
+ return (0);
+}
diff --git a/sst_fwhub.h b/sst_fwhub.h
new file mode 100644
index 0000000..3569130
--- /dev/null
+++ b/sst_fwhub.h
@@ -0,0 +1,48 @@
+#ifndef __SST_FWHUB_H__
+#define __SST_FWHUB_H__ 1
+
+extern int probe_sst_fwhub(struct flashchip *flash);
+extern int erase_sst_fwhub(struct flashchip *flash);
+extern int write_sst_fwhub(struct flashchip *flash, unsigned char *buf);
+
+extern __inline__ void toggle_ready_sst_fwhub(volatile char *dst)
+{
+ unsigned int i = 0;
+ char tmp1, tmp2;
+
+ tmp1 = *dst & 0x40;
+
+ while (i++ < 0xFFFFFF) {
+ tmp2 = *dst & 0x40;
+ if (tmp1 == tmp2) {
+ break;
+ }
+ tmp1 = tmp2;
+ }
+}
+
+extern __inline__ void data_polling_sst_fwhub(volatile char *dst, char data)
+{
+ unsigned int i = 0;
+ char tmp;
+
+ data &= 0x80;
+
+ while (i++ < 0xFFFFFF) {
+ tmp = *dst & 0x80;
+ if (tmp == data) {
+ break;
+ }
+ }
+}
+
+extern __inline__ void protect_sst_fwhub(volatile char *bios)
+{
+ *(volatile char *) (bios + 0x5555) = 0xAA;
+ *(volatile char *) (bios + 0x2AAA) = 0x55;
+ *(volatile char *) (bios + 0x5555) = 0xA0;
+
+ usleep(200);
+}
+
+#endif /* !__SST_FWHUB_H__ */