--- /dev/null
+/*******************************************************************
+ * 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/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>
+
+#ifndef RDC3210_STATIC_MAP
+#define RDC3210_STATIC_MAP 0
+#endif
+#ifndef RDC3210_NO_FACTORY_DFLT
+#define RDC3210_NO_FACTORY_DFLT 1
+#endif
+#ifndef RDC3210_USING_JFFS2
+#define RDC3210_USING_JFFS2 1
+#endif
+
+#define WINDOW_ADDR 0xFFC00000
+#define WINDOW_SIZE 0x00400000
+
+#define BUSWIDTH 2
+
+/* Dante: linked from linux-2.4.x/drivers/mtd/chips/flashdrv.c */
+extern int flashdrv_get_size(void);
+extern int flashdrv_get_sector(int addr);
+extern int flashdrv_get_sector_addr(int sector);
+extern int flashdrv_get_sector_size(int sector);
+
+static struct mtd_info *rdc3210_mtd;
+
+__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]);
+ }
+}
+
+struct map_info rdc3210_map =
+{
+ name: "RDC3210 Flash",
+ size: WINDOW_SIZE,
+ buswidth: BUSWIDTH,
+ read8: rdc3210_map_read8,
+ read16: rdc3210_map_read16,
+ read32: rdc3210_map_read32,
+ copy_from: rdc3210_map_copy_from,
+ write8: rdc3210_map_write8,
+ write16: rdc3210_map_write16,
+ write32: rdc3210_map_write32,
+ copy_to: rdc3210_map_copy_to,
+};
+
+/* 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 */
+#if RDC3210_STATIC_MAP || !RDC3210_NO_FACTORY_DFLT
+ { name: "factory", offset: 0x003D0000, size: 0x00010000 }, /* 64 KB */
+#endif
+ { name: "bootldr", offset: 0x003E0000, size: 0x00020000 }, /* 128 KB */
+};
+
+#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
+#define init_rdc3210_map init_module
+#define cleanup_rdc3210_map cleanup_module
+#endif
+
+mod_init_t init_rdc3210_map(void)
+{
+ printk(KERN_NOTICE "flash device: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR);
+
+ rdc3210_map.map_priv_1 = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+
+ if (!rdc3210_map.map_priv_1)
+ {
+ printk("Failed to ioremap\n");
+ return -EIO;
+ }
+ rdc3210_mtd = do_map_probe("cfi_probe", &rdc3210_map);
+#if RDC3210_STATIC_MAP /* Dante: This is for fixed map */
+ if (rdc3210_mtd)
+ {
+ rdc3210_mtd->module = THIS_MODULE;
+ add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
+ return 0;
+ }
+#else /* Dante: This is for dynamic mapping */
+
+#include <gemtek/sysdep.h>
+#include <gemtek/imghdr.h>
+
+ if (rdc3210_mtd)
+ { // Dante
+#if RDC3210_USING_JFFS2
+ unsigned int tmp, tmp2 = rdc3210_mtd->erasesize;
+#else
+ unsigned int tmp, tmp2 = 32;
+#endif
+ gt_imghdr_t *hdr;
+
+ hdr = (gt_imghdr_t *)(rdc3210_map.map_priv_1);
+
+ 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 / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2);
+ rdc3210_parts[1].size = rdc3210_parts[2].offset - rdc3210_parts[1].offset;
+#if RDC3210_NO_FACTORY_DFLT
+ /* 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 / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2);
+ rdc3210_parts[1].size = rdc3210_parts[2].offset - rdc3210_parts[1].offset;
+#endif
+
+ rdc3210_mtd->module = THIS_MODULE;
+ add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
+ return 0;
+ }
+#endif
+
+ iounmap((void *)rdc3210_map.map_priv_1);
+ return -ENXIO;
+}
+
+mod_exit_t cleanup_rdc3210_map(void)
+{
+ if (rdc3210_mtd)
+ {
+ del_mtd_partitions(rdc3210_mtd);
+ map_destroy(rdc3210_mtd);
+ }
+
+ if (rdc3210_map.map_priv_1)
+ {
+ iounmap((void *)rdc3210_map.map_priv_1);
+ rdc3210_map.map_priv_1 = NULL;
+ }
+}
+
+module_init(init_rdc3210_map);
+module_exit(cleanup_rdc3210_map);
projects / openwrt / staging / chunkeey.git / blobdiff