mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-09-12 18:34:16 +03:00
git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4634 3c298f89-4303-0410-b956-a3cf2f4a3e73
917 lines
25 KiB
Diff
917 lines
25 KiB
Diff
diff -urN linux.old/drivers/mtd/devices/Config.in linux.dev/drivers/mtd/devices/Config.in
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--- linux.old/drivers/mtd/devices/Config.in 2006-06-22 17:35:39.000000000 +0200
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+++ linux.dev/drivers/mtd/devices/Config.in 2006-06-21 21:41:24.000000000 +0200
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@@ -5,6 +5,7 @@
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mainmenu_option next_comment
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comment 'Self-contained MTD device drivers'
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+bool ' Broadcom Chipcommon Serial Flash support' CONFIG_MTD_SFLASH
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dep_tristate ' Ramix PMC551 PCI Mezzanine RAM card support' CONFIG_MTD_PMC551 $CONFIG_MTD $CONFIG_PCI
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if [ "$CONFIG_MTD_PMC551" = "y" -o "$CONFIG_MTD_PMC551" = "m" ]; then
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bool ' PMC551 256M DRAM Bugfix' CONFIG_MTD_PMC551_BUGFIX
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diff -urN linux.old/drivers/mtd/devices/Makefile linux.dev/drivers/mtd/devices/Makefile
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--- linux.old/drivers/mtd/devices/Makefile 2006-06-22 17:35:39.000000000 +0200
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+++ linux.dev/drivers/mtd/devices/Makefile 2006-06-21 21:41:24.000000000 +0200
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@@ -3,6 +3,8 @@
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#
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# $Id: Makefile,v 1.4 2001/06/26 21:10:05 spse Exp $
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+EXTRA_CFLAGS := -I$(TOPDIR)/arch/mips/bcm947xx/include
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+
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O_TARGET := devlink.o
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# *** BIG UGLY NOTE ***
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@@ -12,6 +14,7 @@
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# here where previously there was none. We now have to ensure that
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# doc200[01].o are linked before docprobe.o
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+obj-$(CONFIG_MTD_SFLASH) += sflash.o
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obj-$(CONFIG_MTD_DOC1000) += doc1000.o
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obj-$(CONFIG_MTD_DOC2000) += doc2000.o
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obj-$(CONFIG_MTD_DOC2001) += doc2001.o
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diff -urN linux.old/drivers/mtd/devices/sflash.c linux.dev/drivers/mtd/devices/sflash.c
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--- linux.old/drivers/mtd/devices/sflash.c 1970-01-01 01:00:00.000000000 +0100
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+++ linux.dev/drivers/mtd/devices/sflash.c 2006-06-21 21:41:24.000000000 +0200
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@@ -0,0 +1,298 @@
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+/*
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+ * Broadcom SiliconBackplane chipcommon serial flash interface
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+ *
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+ * Copyright 2001-2003, Broadcom Corporation
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+ * All Rights Reserved.
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+ *
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+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
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+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
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+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
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+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
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+ *
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+ * $Id: sflash.c,v 1.1.1.3 2003/11/10 17:43:38 hyin Exp $
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+ */
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+
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+#include <linux/config.h>
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+#include <linux/module.h>
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+#include <linux/slab.h>
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+#include <linux/ioport.h>
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+#include <linux/mtd/compatmac.h>
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+#include <linux/mtd/mtd.h>
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+#include <linux/mtd/partitions.h>
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+#include <linux/errno.h>
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+#include <linux/pci.h>
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+#include <linux/delay.h>
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+#include <asm/io.h>
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+
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+#ifdef CONFIG_MTD_PARTITIONS
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+#include <linux/mtd/mtd.h>
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+#include <linux/mtd/partitions.h>
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+#include <linux/minix_fs.h>
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+#include <linux/ext2_fs.h>
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+#include <linux/romfs_fs.h>
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+#include <linux/cramfs_fs.h>
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+#include <linux/jffs2.h>
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+#endif
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+
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+#include <typedefs.h>
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+#include <bcmdevs.h>
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+#include <bcmutils.h>
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+#include <osl.h>
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+#include <bcmutils.h>
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+#include <bcmnvram.h>
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+#include <sbconfig.h>
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+#include <sbchipc.h>
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+#include <sflash.h>
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+#include <trxhdr.h>
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+
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+#ifdef CONFIG_MTD_PARTITIONS
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+extern struct mtd_partition * init_mtd_partitions(struct mtd_info *mtd, size_t size);
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+#endif
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+
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+struct sflash_mtd {
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+ chipcregs_t *cc;
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+ struct semaphore lock;
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+ struct mtd_info mtd;
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+ struct mtd_erase_region_info regions[1];
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+};
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+
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+/* Private global state */
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+static struct sflash_mtd sflash;
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+
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+static int
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+sflash_mtd_poll(struct sflash_mtd *sflash, unsigned int offset, int timeout)
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+{
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+ int now = jiffies;
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+ int ret = 0;
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+
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+ for (;;) {
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+ if (!sflash_poll(sflash->cc, offset)) {
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+ ret = 0;
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+ break;
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+ }
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+ if (time_after(jiffies, now + timeout)) {
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+ printk(KERN_ERR "sflash: timeout\n");
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+ ret = -ETIMEDOUT;
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+ break;
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+ }
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+ if (current->need_resched) {
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+ set_current_state(TASK_UNINTERRUPTIBLE);
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+ schedule_timeout(timeout / 10);
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+ } else
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+ udelay(1);
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+ }
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+
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+ return ret;
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+}
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+
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+static int
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+sflash_mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
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+{
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+ struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
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+ int bytes, ret = 0;
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+
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+ /* Check address range */
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+ if (!len)
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+ return 0;
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+ if ((from + len) > mtd->size)
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+ return -EINVAL;
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+
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+ down(&sflash->lock);
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+
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+ *retlen = 0;
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+ while (len) {
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+ if ((bytes = sflash_read(sflash->cc, (uint) from, len, buf)) < 0) {
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+ ret = bytes;
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+ break;
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+ }
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+ from += (loff_t) bytes;
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+ len -= bytes;
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+ buf += bytes;
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+ *retlen += bytes;
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+ }
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+
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+ up(&sflash->lock);
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+
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+ return ret;
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+}
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+
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+static int
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+sflash_mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
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+{
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+ struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
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+ int bytes, ret = 0;
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+
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+ /* Check address range */
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+ if (!len)
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+ return 0;
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+ if ((to + len) > mtd->size)
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+ return -EINVAL;
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+
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+ down(&sflash->lock);
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+
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+ *retlen = 0;
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+ while (len) {
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+ if ((bytes = sflash_write(sflash->cc, (uint) to, len, buf)) < 0) {
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+ ret = bytes;
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+ break;
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+ }
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+ if ((ret = sflash_mtd_poll(sflash, (unsigned int) to, HZ / 10)))
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+ break;
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+ to += (loff_t) bytes;
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+ len -= bytes;
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+ buf += bytes;
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+ *retlen += bytes;
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+ }
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+
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+ up(&sflash->lock);
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+
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+ return ret;
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+}
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+
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+static int
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+sflash_mtd_erase(struct mtd_info *mtd, struct erase_info *erase)
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+{
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+ struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
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+ int i, j, ret = 0;
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+ unsigned int addr, len;
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+
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+ /* Check address range */
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+ if (!erase->len)
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+ return 0;
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+ if ((erase->addr + erase->len) > mtd->size)
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+ return -EINVAL;
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+
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+ addr = erase->addr;
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+ len = erase->len;
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+
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+ down(&sflash->lock);
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+
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+ /* Ensure that requested region is aligned */
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+ for (i = 0; i < mtd->numeraseregions; i++) {
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+ for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
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+ if (addr == mtd->eraseregions[i].offset + mtd->eraseregions[i].erasesize * j &&
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+ len >= mtd->eraseregions[i].erasesize) {
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+ if ((ret = sflash_erase(sflash->cc, addr)) < 0)
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+ break;
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+ if ((ret = sflash_mtd_poll(sflash, addr, 10 * HZ)))
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+ break;
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+ addr += mtd->eraseregions[i].erasesize;
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+ len -= mtd->eraseregions[i].erasesize;
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+ }
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+ }
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+ if (ret)
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+ break;
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+ }
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+
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+ up(&sflash->lock);
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+
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+ /* Set erase status */
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+ if (ret)
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+ erase->state = MTD_ERASE_FAILED;
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+ else
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+ erase->state = MTD_ERASE_DONE;
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+
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+ /* Call erase callback */
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+ if (erase->callback)
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+ erase->callback(erase);
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+
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+ return ret;
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+}
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+
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+#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
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+#define sflash_mtd_init init_module
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+#define sflash_mtd_exit cleanup_module
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+#endif
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+
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+mod_init_t
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+sflash_mtd_init(void)
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+{
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+ struct pci_dev *pdev;
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+ int ret = 0;
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+ struct sflash *info;
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+ uint bank, i;
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+#ifdef CONFIG_MTD_PARTITIONS
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+ struct mtd_partition *parts;
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+#endif
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+
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+ if (!(pdev = pci_find_device(VENDOR_BROADCOM, SB_CC, NULL))) {
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+ printk(KERN_ERR "sflash: chipcommon not found\n");
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+ return -ENODEV;
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+ }
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+
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+ memset(&sflash, 0, sizeof(struct sflash_mtd));
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+ init_MUTEX(&sflash.lock);
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+
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+ /* Map registers and flash base */
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+ if (!(sflash.cc = ioremap_nocache(pci_resource_start(pdev, 0),
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+ pci_resource_len(pdev, 0)))) {
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+ printk(KERN_ERR "sflash: error mapping registers\n");
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+ ret = -EIO;
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+ goto fail;
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+ }
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+
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+ /* Initialize serial flash access */
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+ info = sflash_init(sflash.cc);
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+
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+ if (!info) {
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+ printk(KERN_ERR "sflash: found no supported devices\n");
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+ ret = -ENODEV;
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+ goto fail;
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+ }
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+
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+ /* Setup banks */
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+ sflash.regions[0].offset = 0;
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+ sflash.regions[0].erasesize = info->blocksize;
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+ sflash.regions[0].numblocks = info->numblocks;
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+ if (sflash.regions[0].erasesize > sflash.mtd.erasesize)
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+ sflash.mtd.erasesize = sflash.regions[0].erasesize;
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+ if (sflash.regions[0].erasesize * sflash.regions[0].numblocks) {
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+ sflash.mtd.size += sflash.regions[0].erasesize * sflash.regions[0].numblocks;
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+ }
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+ sflash.mtd.numeraseregions = 1;
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+ ASSERT(sflash.mtd.size == info->size);
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+
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+ /* Register with MTD */
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+ sflash.mtd.name = "sflash";
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+ sflash.mtd.type = MTD_NORFLASH;
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+ sflash.mtd.flags = MTD_CAP_NORFLASH;
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+ sflash.mtd.eraseregions = sflash.regions;
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+ sflash.mtd.module = THIS_MODULE;
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+ sflash.mtd.erase = sflash_mtd_erase;
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+ sflash.mtd.read = sflash_mtd_read;
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+ sflash.mtd.write = sflash_mtd_write;
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+ sflash.mtd.priv = &sflash;
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+
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+#ifdef CONFIG_MTD_PARTITIONS
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+ parts = init_mtd_partitions(&sflash.mtd, sflash.mtd.size);
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+ for (i = 0; parts[i].name; i++);
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+ ret = add_mtd_partitions(&sflash.mtd, parts, i);
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+#else
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+ ret = add_mtd_device(&sflash.mtd);
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+#endif
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+ if (ret) {
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+ printk(KERN_ERR "sflash: add_mtd failed\n");
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+ goto fail;
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+ }
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+
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+ return 0;
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+
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+ fail:
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+ if (sflash.cc)
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+ iounmap((void *) sflash.cc);
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+ return ret;
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+}
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+
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+mod_exit_t
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+sflash_mtd_exit(void)
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+{
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+#ifdef CONFIG_MTD_PARTITIONS
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+ del_mtd_partitions(&sflash.mtd);
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+#else
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+ del_mtd_device(&sflash.mtd);
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+#endif
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+ iounmap((void *) sflash.cc);
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+}
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+
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+module_init(sflash_mtd_init);
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+module_exit(sflash_mtd_exit);
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diff -urN linux.old/drivers/mtd/maps/bcm947xx-flash.c linux.dev/drivers/mtd/maps/bcm947xx-flash.c
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--- linux.old/drivers/mtd/maps/bcm947xx-flash.c 1970-01-01 01:00:00.000000000 +0100
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+++ linux.dev/drivers/mtd/maps/bcm947xx-flash.c 2006-06-23 18:08:46.000000000 +0200
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@@ -0,0 +1,548 @@
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+/*
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+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
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+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
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+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
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+ *
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+ * original functions for finding root filesystem from Mike Baker
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
|
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+ * 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.
|
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+ *
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+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
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+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
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+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
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+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
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+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
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+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
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+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
+ *
|
|
+ * 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.
|
|
+ *
|
|
+ *
|
|
+ * Copyright 2004, Broadcom Corporation
|
|
+ * All Rights Reserved.
|
|
+ *
|
|
+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
|
|
+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
|
|
+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
|
|
+ *
|
|
+ * Flash mapping for BCM947XX boards
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/module.h>
|
|
+#include <linux/types.h>
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/wait.h>
|
|
+#include <linux/mtd/mtd.h>
|
|
+#include <linux/mtd/map.h>
|
|
+#ifdef CONFIG_MTD_PARTITIONS
|
|
+#include <linux/mtd/partitions.h>
|
|
+#endif
|
|
+#include <linux/config.h>
|
|
+#include <linux/squashfs_fs.h>
|
|
+#include <linux/jffs2.h>
|
|
+#include <linux/crc32.h>
|
|
+#include <asm/io.h>
|
|
+
|
|
+#include <typedefs.h>
|
|
+#include <osl.h>
|
|
+#include <bcmnvram.h>
|
|
+#include <bcmutils.h>
|
|
+#include <sbconfig.h>
|
|
+#include <sbchipc.h>
|
|
+#include <sbutils.h>
|
|
+#include <trxhdr.h>
|
|
+
|
|
+/* Global SB handle */
|
|
+extern void *bcm947xx_sbh;
|
|
+extern spinlock_t bcm947xx_sbh_lock;
|
|
+
|
|
+/* Convenience */
|
|
+#define sbh bcm947xx_sbh
|
|
+#define sbh_lock bcm947xx_sbh_lock
|
|
+
|
|
+#define WINDOW_ADDR 0x1fc00000
|
|
+#define WINDOW_SIZE 0x400000
|
|
+#define BUSWIDTH 2
|
|
+
|
|
+static struct mtd_info *bcm947xx_mtd;
|
|
+
|
|
+__u8 bcm947xx_map_read8(struct map_info *map, unsigned long ofs)
|
|
+{
|
|
+ if (map->map_priv_2 == 1)
|
|
+ return __raw_readb(map->map_priv_1 + ofs);
|
|
+
|
|
+ u16 val = __raw_readw(map->map_priv_1 + (ofs & ~1));
|
|
+ if (ofs & 1)
|
|
+ return ((val >> 8) & 0xff);
|
|
+ else
|
|
+ return (val & 0xff);
|
|
+}
|
|
+
|
|
+__u16 bcm947xx_map_read16(struct map_info *map, unsigned long ofs)
|
|
+{
|
|
+ return __raw_readw(map->map_priv_1 + ofs);
|
|
+}
|
|
+
|
|
+__u32 bcm947xx_map_read32(struct map_info *map, unsigned long ofs)
|
|
+{
|
|
+ return __raw_readl(map->map_priv_1 + ofs);
|
|
+}
|
|
+
|
|
+void bcm947xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
|
|
+{
|
|
+ if (len==1) {
|
|
+ memcpy_fromio(to, map->map_priv_1 + from, len);
|
|
+ } else {
|
|
+ int i;
|
|
+ u16 *dest = (u16 *) to;
|
|
+ u16 *src = (u16 *) (map->map_priv_1 + from);
|
|
+ for (i = 0; i < (len / 2); i++) {
|
|
+ dest[i] = src[i];
|
|
+ }
|
|
+ if (len & 1)
|
|
+ *((u8 *)dest+len-1) = src[i] & 0xff;
|
|
+ }
|
|
+}
|
|
+
|
|
+void bcm947xx_map_write8(struct map_info *map, __u8 d, unsigned long adr)
|
|
+{
|
|
+ __raw_writeb(d, map->map_priv_1 + adr);
|
|
+ mb();
|
|
+}
|
|
+
|
|
+void bcm947xx_map_write16(struct map_info *map, __u16 d, unsigned long adr)
|
|
+{
|
|
+ __raw_writew(d, map->map_priv_1 + adr);
|
|
+ mb();
|
|
+}
|
|
+
|
|
+void bcm947xx_map_write32(struct map_info *map, __u32 d, unsigned long adr)
|
|
+{
|
|
+ __raw_writel(d, map->map_priv_1 + adr);
|
|
+ mb();
|
|
+}
|
|
+
|
|
+void bcm947xx_map_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
|
|
+{
|
|
+ memcpy_toio(map->map_priv_1 + to, from, len);
|
|
+}
|
|
+
|
|
+struct map_info bcm947xx_map = {
|
|
+ name: "Physically mapped flash",
|
|
+ size: WINDOW_SIZE,
|
|
+ buswidth: BUSWIDTH,
|
|
+ read8: bcm947xx_map_read8,
|
|
+ read16: bcm947xx_map_read16,
|
|
+ read32: bcm947xx_map_read32,
|
|
+ copy_from: bcm947xx_map_copy_from,
|
|
+ write8: bcm947xx_map_write8,
|
|
+ write16: bcm947xx_map_write16,
|
|
+ write32: bcm947xx_map_write32,
|
|
+ copy_to: bcm947xx_map_copy_to
|
|
+};
|
|
+
|
|
+#ifdef CONFIG_MTD_PARTITIONS
|
|
+
|
|
+static struct mtd_partition bcm947xx_parts[] = {
|
|
+ { name: "cfe", offset: 0, size: 0, mask_flags: MTD_WRITEABLE, },
|
|
+ { name: "linux", offset: 0, size: 0, },
|
|
+ { name: "rootfs", offset: 0, size: 0, },
|
|
+ { name: "nvram", offset: 0, size: 0, },
|
|
+ { name: "OpenWrt", offset: 0, size: 0, },
|
|
+ { name: NULL, },
|
|
+};
|
|
+
|
|
+static int __init
|
|
+find_cfe_size(struct mtd_info *mtd, size_t size)
|
|
+{
|
|
+ struct trx_header *trx;
|
|
+ unsigned char buf[512];
|
|
+ int off;
|
|
+ size_t len;
|
|
+ int blocksize;
|
|
+
|
|
+ trx = (struct trx_header *) buf;
|
|
+
|
|
+ blocksize = mtd->erasesize;
|
|
+ if (blocksize < 0x10000)
|
|
+ blocksize = 0x10000;
|
|
+
|
|
+ for (off = (128*1024); off < size; off += blocksize) {
|
|
+ memset(buf, 0xe5, sizeof(buf));
|
|
+
|
|
+ /*
|
|
+ * Read into buffer
|
|
+ */
|
|
+ if (MTD_READ(mtd, off, sizeof(buf), &len, buf) ||
|
|
+ len != sizeof(buf))
|
|
+ continue;
|
|
+
|
|
+ /* found a TRX header */
|
|
+ if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
|
|
+ goto found;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ printk(KERN_NOTICE
|
|
+ "%s: Couldn't find bootloader size\n",
|
|
+ mtd->name);
|
|
+ return -1;
|
|
+
|
|
+ found:
|
|
+ printk(KERN_NOTICE "bootloader size: %d\n", off);
|
|
+ return off;
|
|
+
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Copied from mtdblock.c
|
|
+ *
|
|
+ * Cache stuff...
|
|
+ *
|
|
+ * Since typical flash erasable sectors are much larger than what Linux's
|
|
+ * buffer cache can handle, we must implement read-modify-write on flash
|
|
+ * sectors for each block write requests. To avoid over-erasing flash sectors
|
|
+ * and to speed things up, we locally cache a whole flash sector while it is
|
|
+ * being written to until a different sector is required.
|
|
+ */
|
|
+
|
|
+static void erase_callback(struct erase_info *done)
|
|
+{
|
|
+ wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
|
|
+ wake_up(wait_q);
|
|
+}
|
|
+
|
|
+static int erase_write (struct mtd_info *mtd, unsigned long pos,
|
|
+ int len, const char *buf)
|
|
+{
|
|
+ struct erase_info erase;
|
|
+ DECLARE_WAITQUEUE(wait, current);
|
|
+ wait_queue_head_t wait_q;
|
|
+ size_t retlen;
|
|
+ int ret;
|
|
+
|
|
+ /*
|
|
+ * First, let's erase the flash block.
|
|
+ */
|
|
+
|
|
+ init_waitqueue_head(&wait_q);
|
|
+ erase.mtd = mtd;
|
|
+ erase.callback = erase_callback;
|
|
+ erase.addr = pos;
|
|
+ erase.len = len;
|
|
+ erase.priv = (u_long)&wait_q;
|
|
+
|
|
+ set_current_state(TASK_INTERRUPTIBLE);
|
|
+ add_wait_queue(&wait_q, &wait);
|
|
+
|
|
+ ret = MTD_ERASE(mtd, &erase);
|
|
+ if (ret) {
|
|
+ set_current_state(TASK_RUNNING);
|
|
+ remove_wait_queue(&wait_q, &wait);
|
|
+ printk (KERN_WARNING "erase of region [0x%lx, 0x%x] "
|
|
+ "on \"%s\" failed\n",
|
|
+ pos, len, mtd->name);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ schedule(); /* Wait for erase to finish. */
|
|
+ remove_wait_queue(&wait_q, &wait);
|
|
+
|
|
+ /*
|
|
+ * Next, writhe data to flash.
|
|
+ */
|
|
+
|
|
+ ret = MTD_WRITE (mtd, pos, len, &retlen, buf);
|
|
+ if (ret)
|
|
+ return ret;
|
|
+ if (retlen != len)
|
|
+ return -EIO;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+
|
|
+
|
|
+
|
|
+static int __init
|
|
+find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
|
|
+{
|
|
+ struct trx_header trx, *trx2;
|
|
+ unsigned char buf[512], *block;
|
|
+ int off, blocksize;
|
|
+ u32 i, crc = ~0;
|
|
+ size_t len;
|
|
+ struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
|
|
+
|
|
+ blocksize = mtd->erasesize;
|
|
+ if (blocksize < 0x10000)
|
|
+ blocksize = 0x10000;
|
|
+
|
|
+ for (off = (128*1024); off < size; off += blocksize) {
|
|
+ memset(&trx, 0xe5, sizeof(trx));
|
|
+
|
|
+ /*
|
|
+ * Read into buffer
|
|
+ */
|
|
+ if (MTD_READ(mtd, off, sizeof(trx), &len, (char *) &trx) ||
|
|
+ len != sizeof(trx))
|
|
+ continue;
|
|
+
|
|
+ /* found a TRX header */
|
|
+ if (le32_to_cpu(trx.magic) == TRX_MAGIC) {
|
|
+ part->offset = le32_to_cpu(trx.offsets[2]) ? :
|
|
+ le32_to_cpu(trx.offsets[1]);
|
|
+ part->size = le32_to_cpu(trx.len);
|
|
+
|
|
+ part->size -= part->offset;
|
|
+ part->offset += off;
|
|
+
|
|
+ goto found;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ printk(KERN_NOTICE
|
|
+ "%s: Couldn't find root filesystem\n",
|
|
+ mtd->name);
|
|
+ return -1;
|
|
+
|
|
+ found:
|
|
+ if (part->size == 0)
|
|
+ return 0;
|
|
+
|
|
+ if (MTD_READ(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf))
|
|
+ return 0;
|
|
+
|
|
+ if (*((__u32 *) buf) == SQUASHFS_MAGIC) {
|
|
+ printk(KERN_INFO "%s: Filesystem type: squashfs, size=0x%x\n", mtd->name, (u32) sb->bytes_used);
|
|
+
|
|
+ /* Update the squashfs partition size based on the superblock info */
|
|
+ part->size = sb->bytes_used;
|
|
+ len = part->offset + part->size;
|
|
+ len += (mtd->erasesize - 1);
|
|
+ len &= ~(mtd->erasesize - 1);
|
|
+ part->size = len - part->offset;
|
|
+ } else if (*((__u16 *) buf) == JFFS2_MAGIC_BITMASK) {
|
|
+ printk(KERN_INFO "%s: Filesystem type: jffs2\n", mtd->name);
|
|
+
|
|
+ /* Move the squashfs outside of the trx */
|
|
+ part->size = 0;
|
|
+ } else {
|
|
+ printk(KERN_INFO "%s: Filesystem type: unknown\n", mtd->name);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ if (trx.len != part->offset + part->size - off) {
|
|
+ /* Update the trx offsets and length */
|
|
+ trx.len = part->offset + part->size - off;
|
|
+
|
|
+ /* Update the trx crc32 */
|
|
+ for (i = (u32) &(((struct trx_header *)NULL)->flag_version); i <= trx.len; i += sizeof(buf)) {
|
|
+ if (MTD_READ(mtd, off + i, sizeof(buf), &len, buf) || len != sizeof(buf))
|
|
+ return 0;
|
|
+ crc = crc32_le(crc, buf, min(sizeof(buf), trx.len - i));
|
|
+ }
|
|
+ trx.crc32 = crc;
|
|
+
|
|
+ /* read first eraseblock from the trx */
|
|
+ trx2 = block = kmalloc(mtd->erasesize, GFP_KERNEL);
|
|
+ if (MTD_READ(mtd, off, mtd->erasesize, &len, block) || len != mtd->erasesize) {
|
|
+ printk("Error accessing the first trx eraseblock\n");
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ printk("Updating TRX offsets and length:\n");
|
|
+ printk("old trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx2->offsets[0], trx2->offsets[1], trx2->offsets[2], trx2->len, trx2->crc32);
|
|
+ printk("new trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx.offsets[0], trx.offsets[1], trx.offsets[2], trx.len, trx.crc32);
|
|
+
|
|
+ /* Write updated trx header to the flash */
|
|
+ memcpy(block, &trx, sizeof(trx));
|
|
+ if (mtd->unlock)
|
|
+ mtd->unlock(mtd, off, mtd->erasesize);
|
|
+ erase_write(mtd, off, mtd->erasesize, block);
|
|
+ if (mtd->sync)
|
|
+ mtd->sync(mtd);
|
|
+ kfree(block);
|
|
+ printk("Done\n");
|
|
+ }
|
|
+
|
|
+ return part->size;
|
|
+}
|
|
+
|
|
+struct mtd_partition * __init
|
|
+init_mtd_partitions(struct mtd_info *mtd, size_t size)
|
|
+{
|
|
+ int cfe_size;
|
|
+
|
|
+ if ((cfe_size = find_cfe_size(mtd,size)) < 0)
|
|
+ return NULL;
|
|
+
|
|
+ /* boot loader */
|
|
+ bcm947xx_parts[0].offset = 0;
|
|
+ bcm947xx_parts[0].size = cfe_size;
|
|
+
|
|
+ /* nvram */
|
|
+ if (cfe_size != 384 * 1024) {
|
|
+ bcm947xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
|
+ bcm947xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
|
+ } else {
|
|
+ /* nvram (old 128kb config partition on netgear wgt634u) */
|
|
+ bcm947xx_parts[3].offset = bcm947xx_parts[0].size;
|
|
+ bcm947xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
|
+ }
|
|
+
|
|
+ /* linux (kernel and rootfs) */
|
|
+ if (cfe_size != 384 * 1024) {
|
|
+ bcm947xx_parts[1].offset = bcm947xx_parts[0].size;
|
|
+ bcm947xx_parts[1].size = bcm947xx_parts[3].offset -
|
|
+ bcm947xx_parts[1].offset;
|
|
+ } else {
|
|
+ /* do not count the elf loader, which is on one block */
|
|
+ bcm947xx_parts[1].offset = bcm947xx_parts[0].size +
|
|
+ bcm947xx_parts[3].size + mtd->erasesize;
|
|
+ bcm947xx_parts[1].size = size -
|
|
+ bcm947xx_parts[0].size -
|
|
+ (2*bcm947xx_parts[3].size) -
|
|
+ mtd->erasesize;
|
|
+ }
|
|
+
|
|
+ /* find and size rootfs */
|
|
+ if (find_root(mtd,size,&bcm947xx_parts[2])==0) {
|
|
+ /* entirely jffs2 */
|
|
+ bcm947xx_parts[4].name = NULL;
|
|
+ bcm947xx_parts[2].size = size - bcm947xx_parts[2].offset -
|
|
+ bcm947xx_parts[3].size;
|
|
+ } else {
|
|
+ /* legacy setup */
|
|
+ /* calculate leftover flash, and assign it to the jffs2 partition */
|
|
+ if (cfe_size != 384 * 1024) {
|
|
+ bcm947xx_parts[4].offset = bcm947xx_parts[2].offset +
|
|
+ bcm947xx_parts[2].size;
|
|
+ if ((bcm947xx_parts[4].offset % mtd->erasesize) > 0) {
|
|
+ bcm947xx_parts[4].offset += mtd->erasesize -
|
|
+ (bcm947xx_parts[4].offset % mtd->erasesize);
|
|
+ }
|
|
+ bcm947xx_parts[4].size = bcm947xx_parts[3].offset -
|
|
+ bcm947xx_parts[4].offset;
|
|
+ } else {
|
|
+ bcm947xx_parts[4].offset = bcm947xx_parts[2].offset +
|
|
+ bcm947xx_parts[2].size;
|
|
+ if ((bcm947xx_parts[4].offset % mtd->erasesize) > 0) {
|
|
+ bcm947xx_parts[4].offset += mtd->erasesize -
|
|
+ (bcm947xx_parts[4].offset % mtd->erasesize);
|
|
+ }
|
|
+ bcm947xx_parts[4].size = size - bcm947xx_parts[3].size -
|
|
+ bcm947xx_parts[4].offset;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return bcm947xx_parts;
|
|
+}
|
|
+
|
|
+#endif
|
|
+
|
|
+
|
|
+mod_init_t init_bcm947xx_map(void)
|
|
+{
|
|
+ ulong flags;
|
|
+ uint coreidx;
|
|
+ chipcregs_t *cc;
|
|
+ uint32 fltype;
|
|
+ uint window_addr = 0, window_size = 0;
|
|
+ size_t size;
|
|
+ int ret = 0;
|
|
+#ifdef CONFIG_MTD_PARTITIONS
|
|
+ struct mtd_partition *parts;
|
|
+ int i;
|
|
+#endif
|
|
+
|
|
+ spin_lock_irqsave(&sbh_lock, flags);
|
|
+ coreidx = sb_coreidx(sbh);
|
|
+
|
|
+ /* Check strapping option if chipcommon exists */
|
|
+ if ((cc = sb_setcore(sbh, SB_CC, 0))) {
|
|
+ fltype = readl(&cc->capabilities) & CAP_FLASH_MASK;
|
|
+ if (fltype == PFLASH) {
|
|
+ bcm947xx_map.map_priv_2 = 1;
|
|
+ window_addr = 0x1c000000;
|
|
+ bcm947xx_map.size = window_size = 32 * 1024 * 1024;
|
|
+ if ((readl(&cc->flash_config) & CC_CFG_DS) == 0)
|
|
+ bcm947xx_map.buswidth = 1;
|
|
+ }
|
|
+ } else {
|
|
+ fltype = PFLASH;
|
|
+ bcm947xx_map.map_priv_2 = 0;
|
|
+ window_addr = WINDOW_ADDR;
|
|
+ window_size = WINDOW_SIZE;
|
|
+ }
|
|
+
|
|
+ sb_setcoreidx(sbh, coreidx);
|
|
+ spin_unlock_irqrestore(&sbh_lock, flags);
|
|
+
|
|
+ if (fltype != PFLASH) {
|
|
+ printk(KERN_ERR "pflash: found no supported devices\n");
|
|
+ ret = -ENODEV;
|
|
+ goto fail;
|
|
+ }
|
|
+
|
|
+ bcm947xx_map.map_priv_1 = (unsigned long) ioremap(window_addr, window_size);
|
|
+
|
|
+ if (!bcm947xx_map.map_priv_1) {
|
|
+ printk(KERN_ERR "Failed to ioremap\n");
|
|
+ return -EIO;
|
|
+ }
|
|
+
|
|
+ if (!(bcm947xx_mtd = do_map_probe("cfi_probe", &bcm947xx_map))) {
|
|
+ printk(KERN_ERR "pflash: cfi_probe failed\n");
|
|
+ iounmap((void *)bcm947xx_map.map_priv_1);
|
|
+ return -ENXIO;
|
|
+ }
|
|
+
|
|
+ bcm947xx_mtd->module = THIS_MODULE;
|
|
+
|
|
+ size = bcm947xx_mtd->size;
|
|
+
|
|
+ printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, window_addr);
|
|
+
|
|
+#ifdef CONFIG_MTD_PARTITIONS
|
|
+ parts = init_mtd_partitions(bcm947xx_mtd, size);
|
|
+ for (i = 0; parts[i].name; i++);
|
|
+ ret = add_mtd_partitions(bcm947xx_mtd, parts, i);
|
|
+ if (ret) {
|
|
+ printk(KERN_ERR "Flash: add_mtd_partitions failed\n");
|
|
+ goto fail;
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ return 0;
|
|
+
|
|
+ fail:
|
|
+ if (bcm947xx_mtd)
|
|
+ map_destroy(bcm947xx_mtd);
|
|
+ if (bcm947xx_map.map_priv_1)
|
|
+ iounmap((void *) bcm947xx_map.map_priv_1);
|
|
+ bcm947xx_map.map_priv_1 = 0;
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+mod_exit_t cleanup_bcm947xx_map(void)
|
|
+{
|
|
+#ifdef CONFIG_MTD_PARTITIONS
|
|
+ del_mtd_partitions(bcm947xx_mtd);
|
|
+#endif
|
|
+ map_destroy(bcm947xx_mtd);
|
|
+ iounmap((void *) bcm947xx_map.map_priv_1);
|
|
+ bcm947xx_map.map_priv_1 = 0;
|
|
+}
|
|
+
|
|
+module_init(init_bcm947xx_map);
|
|
+module_exit(cleanup_bcm947xx_map);
|
|
diff -urN linux.old/drivers/mtd/maps/Config.in linux.dev/drivers/mtd/maps/Config.in
|
|
--- linux.old/drivers/mtd/maps/Config.in 2006-06-22 17:35:39.000000000 +0200
|
|
+++ linux.dev/drivers/mtd/maps/Config.in 2006-06-21 21:41:24.000000000 +0200
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@@ -48,6 +48,7 @@
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fi
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if [ "$CONFIG_MIPS" = "y" ]; then
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+ dep_tristate ' CFI Flash device mapped on Broadcom BCM947XX boards' CONFIG_MTD_BCM947XX $CONFIG_MTD_CFI
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dep_tristate ' Pb1000 MTD support' CONFIG_MTD_PB1000 $CONFIG_MIPS_PB1000
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dep_tristate ' Pb1500 MTD support' CONFIG_MTD_PB1500 $CONFIG_MIPS_PB1500
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dep_tristate ' Pb1100 MTD support' CONFIG_MTD_PB1100 $CONFIG_MIPS_PB1100
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diff -urN linux.old/drivers/mtd/maps/Makefile linux.dev/drivers/mtd/maps/Makefile
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--- linux.old/drivers/mtd/maps/Makefile 2006-06-22 17:35:39.000000000 +0200
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+++ linux.dev/drivers/mtd/maps/Makefile 2006-06-21 21:41:24.000000000 +0200
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@@ -3,6 +3,8 @@
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#
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# $Id: Makefile,v 1.37 2003/01/24 14:26:38 dwmw2 Exp $
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+EXTRA_CFLAGS := -I$(TOPDIR)/arch/mips/bcm947xx/include
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+
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BELOW25 := $(shell echo $(PATCHLEVEL) | sed s/[1234]/y/)
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ifeq ($(BELOW25),y)
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@@ -10,6 +12,7 @@
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endif
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# Chip mappings
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+obj-$(CONFIG_MTD_BCM947XX) += bcm947xx-flash.o
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obj-$(CONFIG_MTD_CDB89712) += cdb89712.o
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obj-$(CONFIG_MTD_ARM_INTEGRATOR)+= integrator-flash.o
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obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o
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