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openwrt/target/linux/rdc-2.6/patches/001-rdc3210_flash_map.patch
Florian Fainelli 44419aed87 Merge preliminary rdc-2.6 support (Airlink101 AR525W) 
SVN-Revision: 5138
2006-10-15 23:34:22 +00:00

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diff -urN linux-2.6.17/drivers/mtd/maps/imghdr.h linux-2.6.17.new/drivers/mtd/maps/imghdr.h
--- linux-2.6.17/drivers/mtd/maps/imghdr.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.17.new/drivers/mtd/maps/imghdr.h 2006-09-24 20:29:20.000000000 +0200
@@ -0,0 +1,25 @@
+#ifndef GT_IMGHDR_H
+#define GT_IMGHDR_H
+
+#define GTIMG_MAGIC "GMTK"
+
+/* Product ID */
+#define PID_RTL_AIRGO 1
+#define PID_RTL_RALINK 2
+#define PID_RDC_AIRGO 3
+#define PID_RDC_RALINK 5 /* White Lable */
+
+/* Gemtek */
+typedef struct
+{
+ UINT8 magic[4]; /* ASICII: GMTK */
+ UINT32 checksum; /* CRC32 */
+ UINT32 version; /* x.x.x.x */
+ UINT32 kernelsz; /* The size of the kernel image */
+ UINT32 imagesz; /* The length of this image file ( kernel + romfs + this header) */
+ UINT32 pid; /* Product ID */
+ UINT32 fastcksum; /* Partial CRC32 on (First(256), medium(256), last(512)) */
+ UINT32 reserved;
+}gt_imghdr_t;
+
+#endif
diff -urN linux-2.6.17/drivers/mtd/maps/Kconfig linux-2.6.17.new/drivers/mtd/maps/Kconfig
--- linux-2.6.17/drivers/mtd/maps/Kconfig 2006-06-18 03:49:35.000000000 +0200
+++ linux-2.6.17.new/drivers/mtd/maps/Kconfig 2006-09-24 20:28:11.000000000 +0200
@@ -76,6 +76,12 @@
PNC-2000 is the name of Network Camera product from PHOTRON
Ltd. in Japan. It uses CFI-compliant flash.
+config MTD_RDC3210
+ tristate "CFI Flash devcie mapped on RDC3210"
+ depends on X86 && MTD_CFI && MTD_PARTITIONS
+ help
+ RDC-3210 is the flash device we find on Ralink reference board
+
config MTD_SC520CDP
tristate "CFI Flash device mapped on AMD SC520 CDP"
depends on X86 && MTD_CFI
diff -urN linux-2.6.17/drivers/mtd/maps/Makefile linux-2.6.17.new/drivers/mtd/maps/Makefile
--- linux-2.6.17/drivers/mtd/maps/Makefile 2006-06-18 03:49:35.000000000 +0200
+++ linux-2.6.17.new/drivers/mtd/maps/Makefile 2006-09-24 20:26:10.000000000 +0200
@@ -28,6 +28,7 @@
obj-$(CONFIG_MTD_PHYSMAP) += physmap.o
obj-$(CONFIG_MTD_PNC2000) += pnc2000.o
obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o
+obj-$(CONFIG_MTD_RDC3210) += rdc3210.o
obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o
obj-$(CONFIG_MTD_TQM8XXL) += tqm8xxl.o
obj-$(CONFIG_MTD_SA1100) += sa1100-flash.o
diff -urN linux-2.6.17/drivers/mtd/maps/rdc3210.c linux-2.6.17.new/drivers/mtd/maps/rdc3210.c
--- linux-2.6.17/drivers/mtd/maps/rdc3210.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.17.new/drivers/mtd/maps/rdc3210.c 2006-09-24 22:55:20.000000000 +0200
@@ -0,0 +1,211 @@
+/*******************************************************************
+ * Simple Flash mapping for RDC3210 *
+ * *
+ * 2005.03.23 *
+ * Dante Su (dante_su@gemtek.com.tw) *
+ * Copyright (C) 2005 Gemtek Corporation *
+ *******************************************************************/
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/config.h>
+
+#define WINDOW_ADDR 0xFFC00000
+#define WINDOW_SIZE 0x00400000
+
+#define BUSWIDTH 2
+
+static struct mtd_info *rdc3210_mtd_info;
+
+__u8 rdc3210_map_read8(struct map_info *map, unsigned long ofs)
+{
+ return *(__u8 *)(map->map_priv_1 + ofs);
+}
+
+__u16 rdc3210_map_read16(struct map_info *map, unsigned long ofs)
+{
+ return *(__u16 *)(map->map_priv_1 + ofs);
+}
+
+__u32 rdc3210_map_read32(struct map_info *map, unsigned long ofs)
+{
+ return *(__u32 *)(map->map_priv_1 + ofs);
+}
+
+void rdc3210_map_write8(struct map_info *map, __u8 d, unsigned long adr)
+{
+ *(__u8 *)(map->map_priv_1 + adr) = d;
+}
+
+void rdc3210_map_write16(struct map_info *map, __u16 d, unsigned long adr)
+{
+ *(__u16 *)(map->map_priv_1 + adr) = d;
+}
+
+void rdc3210_map_write32(struct map_info *map, __u32 d, unsigned long adr)
+{
+ *(__u32 *)(map->map_priv_1 + adr) = d;
+}
+
+void rdc3210_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+ int i;
+ u16 *dst = (u16 *)(to);
+ u16 *src = (u16 *)(map->map_priv_1 + from);
+
+ for(i = 0; i < (len / 2); ++i)
+ dst[i] = src[i];
+
+ if(len & 1)
+ {
+ printk("# WARNNING!!! rdc3210_map_copy_from has odd length\n");
+ //dst[len - 1] = B0(src[i]);
+ }
+}
+
+void rdc3210_map_copy_to(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+ int i;
+ u16 *dst = (u16 *)(map->map_priv_1 + to);
+ u16 *src = (u16 *)(from);
+
+ for(i = 0; i < (len / 2); ++i)
+ dst[i] = src[i];
+
+ if(len & 1)
+ {
+ printk("# WARNNING!!! rdc3210_map_copy_from has odd length\n");
+ //dst[len - 1] = B0(src[i]);
+ }
+}
+
+static struct map_info rdc3210_map =
+{
+ .name = "RDC3210 Flash",
+ .size = WINDOW_SIZE,
+ .bankwidth = BUSWIDTH,
+ .phys = WINDOW_ADDR,
+};
+
+/* Dante: This is the default static mapping, however this is nothing but a hint. (Say dynamic mapping) */
+static struct mtd_partition rdc3210_parts[] =
+{
+ { .name = "linux", .offset = 0, .size = 0x003C0000 }, /* 3840 KB = (Kernel + ROMFS) = (768 KB + 3072 KB) */
+ { .name = "romfs", .offset = 0x000C0000, .size = 0x00300000 }, /* 3072 KB */
+ { .name = "nvram", .offset = 0x003C0000, .size = 0x00010000 }, /* 64 KB */
+ { .name = "factory", .offset = 0x003D0000, .size = 0x00010000 }, /* 64 KB */
+ { .name = "bootldr", .offset = 0x003E0000, .size = 0x00020000 }, /* 128 KB */
+};
+
+static int __init rdc3210_mtd_init(void)
+{
+ printk(KERN_NOTICE "flash device: 0x%x at 0x%x\n", WINDOW_SIZE, WINDOW_ADDR);
+
+ rdc3210_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+
+ if (!rdc3210_map.virt)
+ {
+ printk("Failed to ioremap\n");
+ return -EIO;
+ }
+
+ simple_map_init(&rdc3210_map);
+
+ rdc3210_mtd_info = do_map_probe("cfi_probe", &rdc3210_map);
+ /* Dante: This is for fixed map */
+ if (rdc3210_mtd_info)
+ {
+ rdc3210_mtd_info->owner = THIS_MODULE;
+ add_mtd_partitions(rdc3210_mtd_info, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
+ return 0;
+ }
+ /* Dante: This is for dynamic mapping */
+#if 0
+ if (rdc3210_mtd_info)
+ { // Dante
+ unsigned int tmp;
+ gt_imghdr_t *hdr;
+
+ hdr = (gt_imghdr_t *)(rdc3210_map.virt);
+
+ if(memcmp(hdr->magic, GTIMG_MAGIC, 4))
+ {
+ printk("Invalid MAGIC for Firmware Image!!!\n");
+ return -EIO;
+ }
+
+ /* 1. Adjust Redboot */
+ tmp = flashdrv_get_size() - rdc3210_parts[4].size;
+ rdc3210_parts[4].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
+ rdc3210_parts[4].size = flashdrv_get_size() - rdc3210_parts[4].offset;
+
+ /* 2. Adjust NVRAM */
+ tmp -= rdc3210_parts[3].size;
+ rdc3210_parts[3].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
+ rdc3210_parts[3].size = rdc3210_parts[4].offset - rdc3210_parts[3].offset;
+
+ /* 3. Adjust Factory Default */
+ tmp -= rdc3210_parts[2].size;
+ rdc3210_parts[2].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
+ rdc3210_parts[2].size = rdc3210_parts[3].offset - rdc3210_parts[2].offset;
+
+ /* 4. Adjust Linux (Kernel + ROMFS) */
+ rdc3210_parts[0].size = rdc3210_parts[2].offset - rdc3210_parts[0].offset;
+
+ /* 5. Adjust ROMFS */
+ tmp = hdr->kernelsz + sizeof(gt_imghdr_t);
+ rdc3210_parts[1].offset = rdc3210_parts[0].offset + (((tmp / 32) + ((tmp % 32) ? 1 : 0)) * 32);
+ rdc3210_parts[1].size = rdc3210_parts[2].offset - rdc3210_parts[1].offset;
+
+ /* 1. Adjust Redboot */
+ tmp = flashdrv_get_size() - rdc3210_parts[3].size;
+ rdc3210_parts[3].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
+ rdc3210_parts[3].size = flashdrv_get_size() - rdc3210_parts[3].offset;
+
+ /* 2. Adjust NVRAM */
+ tmp -= rdc3210_parts[2].size;
+ rdc3210_parts[2].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
+ rdc3210_parts[2].size = rdc3210_parts[3].offset - rdc3210_parts[2].offset;
+
+ /* 4. Adjust Linux (Kernel + ROMFS) */
+ rdc3210_parts[0].size = rdc3210_parts[2].offset - rdc3210_parts[0].offset;
+
+ /* 5. Adjust ROMFS */
+ tmp = hdr->kernelsz + sizeof(gt_imghdr_t);
+ rdc3210_parts[1].offset = rdc3210_parts[0].offset + (((tmp / 32) + ((tmp % 32) ? 1 : 0)) * 32);
+ rdc3210_parts[1].size = rdc3210_parts[2].offset - rdc3210_parts[1].offset;
+
+ rdc3210_mtd_info->owner = THIS_MODULE;
+ add_mtd_partitions(rdc3210_mtd_info, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
+ return 0;
+ }
+#endif
+ iounmap((void *)rdc3210_map.virt);
+ return -ENXIO;
+}
+
+static void __exit rdc3210_mtd_exit(void)
+{
+ if (rdc3210_mtd_info)
+ {
+ del_mtd_partitions(rdc3210_mtd_info);
+ map_destroy(rdc3210_mtd_info);
+ }
+
+ if (rdc3210_map.virt)
+ {
+ iounmap(rdc3210_map.virt);
+ rdc3210_map.virt = 0;
+ }
+}
+
+module_init(rdc3210_mtd_init);
+module_exit(rdc3210_mtd_exit);
+MODULE_LICENSE("GPL");
+
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