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-rw-r--r--packages/linux/linux-ezx/ezx_mtd.patch219
1 files changed, 219 insertions, 0 deletions
diff --git a/packages/linux/linux-ezx/ezx_mtd.patch b/packages/linux/linux-ezx/ezx_mtd.patch
new file mode 100644
index 0000000000..e649fe0b60
--- /dev/null
+++ b/packages/linux/linux-ezx/ezx_mtd.patch
@@ -0,0 +1,219 @@
+MTD map support for pxa27x on the EZX
+
+diff -Nru --exclude-from=/sunbeam/home/laforge/scripts/dontdiff linux-2.6.16.5/drivers/mtd/maps/Kconfig linux-2.6.16.5-exz/drivers/mtd/maps/Kconfig
+--- linux-2.6.16.5/drivers/mtd/maps/Kconfig 2006-04-12 22:27:57.000000000 +0200
++++ linux-2.6.16.5-exz/drivers/mtd/maps/Kconfig 2006-04-16 22:31:41.000000000 +0200
+@@ -621,6 +621,13 @@
+ help
+ This enables access to the flash chip on the Sharp SL Series of PDAs.
+
++config MTD_PXA27x
++ bool "Map driver for Intel PXA27x"
++ depends on MTD && ARCH_PXA
++ help
++ This enables access to the flash chip on the Intel PXA27x
++
++
+ config MTD_PLATRAM
+ tristate "Map driver for platform device RAM (mtd-ram)"
+ depends on MTD
+diff -Nru --exclude-from=/sunbeam/home/laforge/scripts/dontdiff linux-2.6.16.5/drivers/mtd/maps/Makefile linux-2.6.16.5-exz/drivers/mtd/maps/Makefile
+--- linux-2.6.16.5/drivers/mtd/maps/Makefile 2006-04-12 22:27:57.000000000 +0200
++++ linux-2.6.16.5-exz/drivers/mtd/maps/Makefile 2006-04-16 22:30:56.000000000 +0200
+@@ -71,3 +71,4 @@
+ obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
+ obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o
+ obj-$(CONFIG_MTD_TQM834x) += tqm834x.o
++obj-$(CONFIG_MTD_PXA27x) += pxa27x.o
+diff -Nru --exclude-from=/sunbeam/home/laforge/scripts/dontdiff linux-2.6.16.5/drivers/mtd/maps/pxa27x.c linux-2.6.16.5-exz/drivers/mtd/maps/pxa27x.c
+--- linux-2.6.16.5/drivers/mtd/maps/pxa27x.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.16.5-exz/drivers/mtd/maps/pxa27x.c 2006-04-16 22:53:13.000000000 +0200
+@@ -0,0 +1,187 @@
++/*
++ * $Id: $
++ *
++ * Map driver for the PXA27x
++ *
++ * Author: Harald Welte
++ * Copyright: (C) 2001 MontaVista Software Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/module.h>
++#include <linux/config.h>
++#include <linux/types.h>
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/dma-mapping.h>
++#include <linux/slab.h>
++
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/map.h>
++#include <linux/mtd/partitions.h>
++
++#include <asm/io.h>
++#include <asm/hardware.h>
++#include <asm/arch/pxa-regs.h>
++#include <asm/arch/mainstone.h>
++
++#define WINDOW_ADDR 0x0
++#define WINDOW_SIZE (32*1024*1024)
++#define WINDOW_CACHE_ADDR 0x0
++#define WINDOW_CACHE_SIZE 0x1a00000
++
++static void pxa27x_map_inval_cache(struct map_info *map, unsigned long from,
++ ssize_t len)
++{
++ unsigned long endaddress, i, j;
++
++ /* FIXME: can this be replaced by consistent_sync? */
++
++ endaddress = from + len -1;
++ from &= ~(32-1);
++ endaddress &= ~(32-1);
++ for (i = from; i <= endaddress; i += 32)
++ asm("mcr p15, 0, %0, c7, c6, 1"::"r"(i));
++
++ asm( "mrc p15, 0, %0, c2, c0, 0\n"
++ "mov %0, %0\n"
++ "sub pc, pc #4"
++ :"=r"(j));
++}
++
++
++struct map_info pxa27x_map = {
++ .name = "PXA27x flash",
++ .size = WINDOW_SIZE,
++ .phys = WINDOW_ADDR,
++ .inval_cache = &pxa27x_map_inval_cache,
++};
++
++#if defined (CONFIG_PXA_EZX_A780) || defined (CONFIG_PXA_EZX_E680)
++static struct mtd_partition pxa27x_partitions[] = {
++ {
++ .name = "Bootloader",
++ .size = 0x00020000,
++ .offset = 0,
++ .mask_flags = MTD_WRITEABLE,
++ }, {
++ .name = "Kernel",
++ .size = 0x000e0000,
++ .offset = 0x00020000,
++ } , {
++ .name = "rootfs",
++ .size = 0x018e0000,
++ .offset = 0x00120000,
++ } , {
++ .name = "VFM_Filesystem",
++ .size = 0x00580000,
++ .offset = 0x01a00000,
++ } , {
++ .name = "setup",
++ .size = 0x00020000,
++ .offset = 0x01fa0000,
++ } , {
++ .name = "Logo",
++ .size = 0x00020000,
++ .offset = 0x01fc0000,
++ },
++};
++#else
++#error "please define partition for this PXA27x implementation"
++#endif
++
++
++static struct mtd_info *mymtd;
++static struct mtd_partition *parsed_parts;
++
++static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
++
++static int __init init_pxa27x(void)
++{
++ struct mtd_partition *parts;
++ int nb_parts = 0;
++ int parsed_nr_parts = 0;
++ char *part_type = "static";
++
++ pxa27x_map.bankwidth = (BOOT_DEF & 1) ? 2 : 4;
++
++ printk("Probing PXA27x flash at physical address 0x%08x (%d-bit bankwidth)\n",
++ WINDOW_ADDR, pxa27x_map.bankwidth * 8);
++ pxa27x_map.virt = ioremap(pxa27x_map.phys, pxa27x_map.size);
++
++ if (!pxa27x_map.virt) {
++ printk("Failed to ioremap\n");
++ return -EIO;
++ }
++
++ mymtd = do_map_probe("cfi_probe", &pxa27x_map);
++ if (!mymtd) {
++ iounmap((void *)pxa27x_map.virt);
++ return -ENXIO;
++ }
++ mymtd->owner = THIS_MODULE;
++
++#if 0
++ /* ioremap the first flash chip as cacheable */
++ pxa27x_map.cached = ioremap_cached(pxa27x_map.phys, pxa27x_map.size);
++ if (!pxa27x_map.cached) {
++ printk("Failed to do cacheable-ioremap\n");
++ iounmap((void *)pxa27x_map.virt);
++ return -EIO;
++ }
++#endif
++ simple_map_init(&pxa27x_map);
++
++ if (parsed_nr_parts == 0) {
++ int ret = parse_mtd_partitions(mymtd, probes, &parsed_parts, 0);
++
++ if (ret > 0) {
++ part_type = "RedBoot";
++ parsed_nr_parts = ret;
++ }
++ }
++
++ if (parsed_nr_parts > 0) {
++ parts = parsed_parts;
++ nb_parts = parsed_nr_parts;
++ } else {
++ parts = pxa27x_partitions;
++ nb_parts = ARRAY_SIZE(pxa27x_partitions);
++ }
++
++ if (nb_parts) {
++ printk(KERN_NOTICE "Using %s partition definition\n", part_type);
++ add_mtd_partitions(mymtd, parts, nb_parts);
++ } else {
++ add_mtd_device(mymtd);
++ }
++#if 0
++ if (ret = ezx_partition_init())
++#endif
++ return 0;
++}
++
++static void __exit cleanup_pxa27x(void)
++{
++ if (mymtd) {
++ del_mtd_partitions(mymtd);
++ map_destroy(mymtd);
++ if (parsed_parts)
++ kfree(parsed_parts);
++ }
++ if (pxa27x_map.virt)
++ iounmap((void *)pxa27x_map.virt);
++ if (pxa27x_map.cached)
++ iounmap((void *)pxa27x_map.cached);
++ return;
++}
++
++module_init(init_pxa27x);
++module_exit(cleanup_pxa27x);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
++MODULE_DESCRIPTION("MTD map driver for Intel PXA27x");
+
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