mirror of https://github.com/hak5/openwrt.git
parent
f7591f99b3
commit
ef6788dd04
|
@ -1,10 +1,11 @@
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|||
diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-flash/drivers/mtd/maps/bcm47xx-flash.c
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--- linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c 1970-01-01 01:00:00.000000000 +0100
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+++ linux-2.6.15-rc5-flash/drivers/mtd/maps/bcm47xx-flash.c 2005-12-19 00:33:31.276241000 +0100
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@@ -0,0 +1,316 @@
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diff -urN linux.old/drivers/mtd/maps/bcm47xx-flash.c linux.dev/drivers/mtd/maps/bcm47xx-flash.c
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--- linux.old/drivers/mtd/maps/bcm47xx-flash.c 1970-01-01 01:00:00.000000000 +0100
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+++ linux.dev/drivers/mtd/maps/bcm47xx-flash.c 2006-06-23 19:54:06.000000000 +0200
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@@ -0,0 +1,451 @@
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+/*
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+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
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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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@ -43,18 +44,24 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla
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+#include <linux/module.h>
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+#include <linux/types.h>
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+#include <linux/kernel.h>
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+#include <asm/io.h>
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+#include <linux/wait.h>
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+#include <linux/config.h>
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+#include <linux/mtd/mtd.h>
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+#include <linux/mtd/map.h>
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+#ifdef CONFIG_MTD_PARTITIONS
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+#include <linux/mtd/partitions.h>
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+#endif
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+#include <linux/config.h>
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+#include <linux/squashfs_fs.h>
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+#include <linux/jffs2.h>
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+#include <linux/crc32.h>
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+#include <asm/io.h>
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+
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+#include <trxhdr.h>
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+
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+#define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
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+#define NVRAM_SPACE 0x8000
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+#define WINDOW_ADDR 0x1c000000
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+#define WINDOW_SIZE (0x400000*2)
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+#define WINDOW_SIZE 0x800000
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+#define BUSWIDTH 2
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+
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+static struct mtd_info *bcm947xx_mtd;
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@ -104,13 +111,15 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla
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+ unsigned char buf[512];
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+ int off;
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+ size_t len;
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+ int cfe_size_flag;
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+ int blocksize;
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+
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+ trx = (struct trx_header *) buf;
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+
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+ cfe_size_flag=0;
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+ blocksize = mtd->erasesize;
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+ if (blocksize < 0x10000)
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+ blocksize = 0x10000;
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+
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+ for (off = (256*1024); off < size; off += mtd->erasesize) {
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+ for (off = (128*1024); off < size; off += blocksize) {
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+ memset(buf, 0xe5, sizeof(buf));
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+
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+ /*
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@ -122,9 +131,8 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla
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+
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+ /* found a TRX header */
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+ if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
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+ goto done;
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+ goto found;
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+ }
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+ cfe_size_flag += 1;
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+ }
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+
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+ printk(KERN_NOTICE
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@ -132,42 +140,115 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla
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+ mtd->name);
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+ return -1;
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+
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+ done:
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+ printk(KERN_NOTICE "bootloader size flag: %d\n", cfe_size_flag);
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+ return cfe_size_flag;
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+ found:
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+ printk(KERN_NOTICE "bootloader size: %d\n", off);
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+ return off;
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+
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+}
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+
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+/*
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+ * Copied from mtdblock.c
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+ *
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+ * Cache stuff...
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+ *
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+ * Since typical flash erasable sectors are much larger than what Linux's
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+ * buffer cache can handle, we must implement read-modify-write on flash
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+ * sectors for each block write requests. To avoid over-erasing flash sectors
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+ * and to speed things up, we locally cache a whole flash sector while it is
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+ * being written to until a different sector is required.
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+ */
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+
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+static void erase_callback(struct erase_info *done)
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+{
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+ wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
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+ wake_up(wait_q);
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+}
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+
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+static int erase_write (struct mtd_info *mtd, unsigned long pos,
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+ int len, const char *buf)
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+{
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+ struct erase_info erase;
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+ DECLARE_WAITQUEUE(wait, current);
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+ wait_queue_head_t wait_q;
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+ size_t retlen;
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+ int ret;
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+
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+ /*
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+ * First, let's erase the flash block.
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+ */
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+
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+ init_waitqueue_head(&wait_q);
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+ erase.mtd = mtd;
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+ erase.callback = erase_callback;
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+ erase.addr = pos;
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+ erase.len = len;
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+ erase.priv = (u_long)&wait_q;
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+
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+ set_current_state(TASK_INTERRUPTIBLE);
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+ add_wait_queue(&wait_q, &wait);
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+
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+ ret = MTD_ERASE(mtd, &erase);
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+ if (ret) {
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+ set_current_state(TASK_RUNNING);
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+ remove_wait_queue(&wait_q, &wait);
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+ printk (KERN_WARNING "erase of region [0x%lx, 0x%x] "
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+ "on \"%s\" failed\n",
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+ pos, len, mtd->name);
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+ return ret;
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+ }
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+
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+ schedule(); /* Wait for erase to finish. */
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+ remove_wait_queue(&wait_q, &wait);
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+
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+ /*
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+ * Next, writhe data to flash.
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+ */
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+
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+ ret = MTD_WRITE (mtd, pos, len, &retlen, buf);
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+ if (ret)
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+ return ret;
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+ if (retlen != len)
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+ return -EIO;
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+ return 0;
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+}
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+
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+
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+
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+
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+static int __init
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+find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
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+{
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+ struct trx_header *trx;
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+ unsigned char buf[512];
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+ int off;
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+ struct trx_header trx, *trx2;
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+ unsigned char buf[512], *block;
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+ int off, blocksize;
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+ u32 i, crc = ~0;
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+ size_t len;
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+ struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
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+
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+ trx = (struct trx_header *) buf;
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+ blocksize = mtd->erasesize;
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+ if (blocksize < 0x10000)
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+ blocksize = 0x10000;
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+
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+ for (off = (256*1024); off < size; off += mtd->erasesize) {
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+ memset(buf, 0xe5, sizeof(buf));
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+ for (off = (128*1024); off < size; off += blocksize) {
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+ memset(&trx, 0xe5, sizeof(trx));
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+
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+ /*
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+ * Read into buffer
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+ */
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+ if (MTD_READ(mtd, off, sizeof(buf), &len, buf) ||
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+ len != sizeof(buf))
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+ if (MTD_READ(mtd, off, sizeof(trx), &len, (char *) &trx) ||
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+ len != sizeof(trx))
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+ continue;
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+
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+ /* found a TRX header */
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+ if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
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+ part->offset = le32_to_cpu(trx->offsets[2]) ? :
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+ le32_to_cpu(trx->offsets[1]);
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+ part->size = le32_to_cpu(trx->len);
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+ if (le32_to_cpu(trx.magic) == TRX_MAGIC) {
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+ part->offset = le32_to_cpu(trx.offsets[2]) ? :
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+ le32_to_cpu(trx.offsets[1]);
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+ part->size = le32_to_cpu(trx.len);
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+
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+ part->size -= part->offset;
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+ part->offset += off;
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+
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+ goto done;
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+ goto found;
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+ }
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+ }
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+
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@ -176,39 +257,93 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla
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+ mtd->name);
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+ return -1;
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+
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+ done:
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+ found:
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+ if (part->size == 0)
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+ return 0;
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+
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+ if (MTD_READ(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf))
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+ return 0;
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+
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+ if (*((__u32 *) buf) == SQUASHFS_MAGIC) {
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+ printk(KERN_INFO "%s: Filesystem type: squashfs, size=0x%x\n", mtd->name, (u32) sb->bytes_used);
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+
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+ /* Update the squashfs partition size based on the superblock info */
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+ part->size = sb->bytes_used;
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+ len = part->offset + part->size;
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+ len += (mtd->erasesize - 1);
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+ len &= ~(mtd->erasesize - 1);
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+ part->size = len - part->offset;
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+ } else if (*((__u16 *) buf) == JFFS2_MAGIC_BITMASK) {
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+ printk(KERN_INFO "%s: Filesystem type: jffs2\n", mtd->name);
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+
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+ /* Move the squashfs outside of the trx */
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+ part->size = 0;
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+ } else {
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+ printk(KERN_INFO "%s: Filesystem type: unknown\n", mtd->name);
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+ return 0;
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+ }
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+
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+ if (trx.len != part->offset + part->size - off) {
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+ /* Update the trx offsets and length */
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+ trx.len = part->offset + part->size - off;
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+
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+ /* Update the trx crc32 */
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+ for (i = (u32) &(((struct trx_header *)NULL)->flag_version); i <= trx.len; i += sizeof(buf)) {
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+ if (MTD_READ(mtd, off + i, sizeof(buf), &len, buf) || len != sizeof(buf))
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+ return 0;
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+ crc = crc32_le(crc, buf, min(sizeof(buf), trx.len - i));
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+ }
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+ trx.crc32 = crc;
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+
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+ /* read first eraseblock from the trx */
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+ block = kmalloc(mtd->erasesize, GFP_KERNEL);
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+ trx2 = (struct trx_header *) block;
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+ if (MTD_READ(mtd, off, mtd->erasesize, &len, block) || len != mtd->erasesize) {
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+ printk("Error accessing the first trx eraseblock\n");
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+ return 0;
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+ }
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+
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+ printk("Updating TRX offsets and length:\n");
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+ 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);
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+ 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);
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+
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+ /* Write updated trx header to the flash */
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+ memcpy(block, &trx, sizeof(trx));
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+ if (mtd->unlock)
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+ mtd->unlock(mtd, off, mtd->erasesize);
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+ erase_write(mtd, off, mtd->erasesize, block);
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+ if (mtd->sync)
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+ mtd->sync(mtd);
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+ kfree(block);
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+ printk("Done\n");
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+ }
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+
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+ return part->size;
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+}
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+
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+struct mtd_partition * __init
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+init_mtd_partitions(struct mtd_info *mtd, size_t size)
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+{
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+ int cfe_size;
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+
|
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+ int cfe_size_flag;
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+
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+ /* if cfe_size_flag=0, cfe size is 256 kb, else 384 kb */
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+ cfe_size_flag = find_cfe_size(mtd, size);
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+ cfe_size = find_cfe_size(mtd,size);
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+
|
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+ /* boot loader */
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+ bcm947xx_parts[0].offset = 0;
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+ if (cfe_size_flag == 0) {
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+ bcm947xx_parts[0].size = 1024*256;
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+ } else {
|
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+ /* netgear wgt634u has 384 kb bootloader */
|
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+ bcm947xx_parts[0].size = 1024*384;
|
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+ }
|
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+ bcm947xx_parts[0].size = cfe_size;
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+
|
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+ /* nvram */
|
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+ if (cfe_size_flag == 0) {
|
||||
+ bcm947xx_parts[3].offset = size - mtd->erasesize;
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+ if (cfe_size != 384 * 1024) {
|
||||
+ bcm947xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
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+ bcm947xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
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+ } else {
|
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+ /* nvram (old 128kb config partition on netgear wgt634u) */
|
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+ bcm947xx_parts[3].offset = bcm947xx_parts[0].size;
|
||||
+ bcm947xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
||||
+ }
|
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+ bcm947xx_parts[3].size = mtd->erasesize;
|
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+
|
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+ /* linux (kernel and rootfs) */
|
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+ if (cfe_size_flag == 0) {
|
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+ if (cfe_size != 384 * 1024) {
|
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+ bcm947xx_parts[1].offset = bcm947xx_parts[0].size;
|
||||
+ bcm947xx_parts[1].size = bcm947xx_parts[3].offset -
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+ bcm947xx_parts[1].offset;
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|
@ -227,11 +362,11 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla
|
|||
+ /* entirely jffs2 */
|
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+ bcm947xx_parts[4].name = NULL;
|
||||
+ bcm947xx_parts[2].size = size - bcm947xx_parts[2].offset -
|
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+ bcm947xx_parts[3].size;
|
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+ bcm947xx_parts[3].size;
|
||||
+ } else {
|
||||
+ /* legacy setup */
|
||||
+ /* calculate leftover flash, and assign it to the jffs2 partition */
|
||||
+ if (cfe_size_flag == 0) {
|
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+ if (cfe_size != 384 * 1024) {
|
||||
+ bcm947xx_parts[4].offset = bcm947xx_parts[2].offset +
|
||||
+ bcm947xx_parts[2].size;
|
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+ if ((bcm947xx_parts[4].offset % mtd->erasesize) > 0) {
|
||||
|
@ -318,9 +453,9 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla
|
|||
+
|
||||
+module_init(init_bcm947xx_map);
|
||||
+module_exit(cleanup_bcm947xx_map);
|
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diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/Kconfig linux-2.6.15-rc5-flash/drivers/mtd/maps/Kconfig
|
||||
--- linux-2.6.15-rc5/drivers/mtd/maps/Kconfig 2005-12-04 06:10:42.000000000 +0100
|
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+++ linux-2.6.15-rc5-flash/drivers/mtd/maps/Kconfig 2005-12-18 19:36:11.555087000 +0100
|
||||
diff -urN linux.old/drivers/mtd/maps/Kconfig linux.dev/drivers/mtd/maps/Kconfig
|
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--- linux.old/drivers/mtd/maps/Kconfig 2006-06-23 19:13:51.000000000 +0200
|
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+++ linux.dev/drivers/mtd/maps/Kconfig 2006-06-23 18:47:58.000000000 +0200
|
||||
@@ -299,6 +299,12 @@
|
||||
Mapping for the Flaga digital module. If you don't have one, ignore
|
||||
this setting.
|
||||
|
@ -334,10 +469,10 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/Kconfig linux-2.6.15-rc5-flash/drive
|
|||
config MTD_BEECH
|
||||
tristate "CFI Flash device mapped on IBM 405LP Beech"
|
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depends on MTD_CFI && BEECH
|
||||
diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/Makefile linux-2.6.15-rc5-flash/drivers/mtd/maps/Makefile
|
||||
--- linux-2.6.15-rc5/drivers/mtd/maps/Makefile 2005-12-04 06:10:42.000000000 +0100
|
||||
+++ linux-2.6.15-rc5-flash/drivers/mtd/maps/Makefile 2005-12-18 19:36:11.555087000 +0100
|
||||
@@ -31,6 +31,7 @@
|
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diff -urN linux.old/drivers/mtd/maps/Makefile linux.dev/drivers/mtd/maps/Makefile
|
||||
--- linux.old/drivers/mtd/maps/Makefile 2006-06-23 19:13:51.000000000 +0200
|
||||
+++ linux.dev/drivers/mtd/maps/Makefile 2006-06-23 18:47:58.000000000 +0200
|
||||
@@ -30,6 +30,7 @@
|
||||
obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o
|
||||
obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o
|
||||
obj-$(CONFIG_MTD_TQM8XXL) += tqm8xxl.o
|
||||
|
|
Loading…
Reference in New Issue