diff options
Diffstat (limited to 'target/linux/realtek/files/drivers/mtd/maps/rtl819x_flash.c')
| -rw-r--r-- | target/linux/realtek/files/drivers/mtd/maps/rtl819x_flash.c | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/target/linux/realtek/files/drivers/mtd/maps/rtl819x_flash.c b/target/linux/realtek/files/drivers/mtd/maps/rtl819x_flash.c new file mode 100644 index 000000000..f5a160974 --- /dev/null +++ b/target/linux/realtek/files/drivers/mtd/maps/rtl819x_flash.c @@ -0,0 +1,392 @@ +
+/*
+ * Flash mapping for rtl8196 board
+ *
+ * Copyright (C) 2008 Realtek 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/root_dev.h>
+#include <linux/mtd/partitions.h>
+#include <linux/config.h>
+#include <linux/delay.h>
+#include <linux/autoconf.h>
+
+#ifdef CONFIG_MTD_CONCAT
+#include <linux/mtd/concat.h>
+#endif
+
+#define WINDOW_ADDR 0xbfe00000
+#ifdef CONFIG_SPANSION_16M_FLASH
+#define WINDOW_SIZE 0x1000000
+#define FLASH_BANK_SIZE 0x400000
+#else
+#define WINDOW_SIZE 0x400000
+#endif
+#define BUSWIDTH 2
+
+#ifdef CONFIG_RTL_TWO_SPI_FLASH_ENABLE
+#define MAX_SPI_CS 2 /* Number of CS we are going to test */
+#else
+#define MAX_SPI_CS 1
+#endif
+
+
+
+static struct mtd_info *rtl8196_mtd;
+
+__u8 rtl8196_map_read8(struct map_info *map, unsigned long ofs)
+{
+ //printk("enter %s %d\n",__FILE__,__LINE__);
+ return __raw_readb(map->map_priv_1 + ofs);
+}
+
+__u16 rtl8196_map_read16(struct map_info *map, unsigned long ofs)
+{
+ //printk("enter %s %d\n",__FILE__,__LINE__);
+ return __raw_readw(map->map_priv_1 + ofs);
+}
+
+__u32 rtl8196_map_read32(struct map_info *map, unsigned long ofs)
+{
+ //printk("enter %s %d\n",__FILE__,__LINE__);
+ return __raw_readl(map->map_priv_1 + ofs);
+}
+
+void rtl8196_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+ //printk("enter to %x from %x len %d\n",to, map->map_priv_1+from , len);
+ //11/15/05' hrchen, change the size to fit file systems block size if use different fs
+ //4096 for cramfs, 1024 for squashfs
+ if (from>0x10000)
+ memcpy(to, map->map_priv_1 + from, (len<=1024)?len:1024);//len);
+ else
+ memcpy(to, map->map_priv_1 + from, (len<=4096)?len:4096);//len);
+ //printk("enter %s %d\n", __FILE__,__LINE__);
+
+}
+
+void rtl8196_map_write8(struct map_info *map, __u8 d, unsigned long adr)
+{
+ __raw_writeb(d, map->map_priv_1 + adr);
+ mb();
+}
+
+void rtl8196_map_write16(struct map_info *map, __u16 d, unsigned long adr)
+{
+ __raw_writew(d, map->map_priv_1 + adr);
+ mb();
+}
+
+void rtl8196_map_write32(struct map_info *map, __u32 d, unsigned long adr)
+{
+ __raw_writel(d, map->map_priv_1 + adr);
+ mb();
+}
+
+void rtl8196_map_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
+{
+ //printk("enter %s %d\n",__FILE__,__LINE__);
+ memcpy_toio(map->map_priv_1 + to, from, len);
+}
+
+static struct map_info spi_map[MAX_SPI_CS] = {
+ {
+ name: "flash_bank_1",
+#ifdef CONFIG_RTL_TWO_SPI_FLASH_ENABLE
+ size: CONFIG_RTL_SPI_FLASH1_SIZE,
+#else
+ size: WINDOW_SIZE,
+#endif
+ phys: 0xbd000000,
+ virt: 0xbd000000,
+ bankwidth: BUSWIDTH
+
+ },
+#ifdef CONFIG_RTL_TWO_SPI_FLASH_ENABLE
+ {
+ name: "flash_bank_2",
+ size: CONFIG_RTL_SPI_FLASH2_SIZE,
+ phys: 0xbe000000,
+ virt: 0xbe000000,
+ bankwidth: BUSWIDTH
+ }
+#endif
+};
+
+static struct mtd_info *my_sub_mtd[MAX_SPI_CS] = {
+ NULL,
+#ifdef CONFIG_RTL_TWO_SPI_FLASH_ENABLE
+ NULL
+#endif
+};
+
+static struct mtd_info *mymtd;
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef CONFIG_RTL_FLASH_MAPPING_ENABLE
+#if defined( CONFIG_ROOTFS_JFFS2 )
+static struct mtd_partition rtl8196_parts1[] = {
+ {
+ name: "boot+cfg",
+ size: (CONFIG_RTL_LINUX_IMAGE_OFFSET-0),
+ offset: 0x00000000,
+ },
+ {
+ name: "jffs2(linux+root fs)",
+#ifdef CONFIG_RTL_TWO_SPI_FLASH_ENABLE
+#ifdef CONFIG_MTD_CONCAT
+ size: (CONFIG_RTL_SPI_FLASH1_SIZE+CONFIG_RTL_SPI_FLASH2_SIZE-CONFIG_RTL_ROOT_IMAGE_OFFSET),
+#else
+ size: (CONFIG_RTL_SPI_FLASH1_SIZE-CONFIG_RTL_ROOT_IMAGE_OFFSET),
+#endif
+#else
+ size: (WINDOW_SIZE - CONFIG_RTL_ROOT_IMAGE_OFFSET),
+#endif
+ offset: (CONFIG_RTL_ROOT_IMAGE_OFFSET),
+ }
+};
+#elif defined( CONFIG_ROOTFS_RAMFS )
+static struct mtd_partition rtl8196_parts1[] = {
+ {
+ name: "boot+cfg+linux+rootfs",
+ size: (CONFIG_RTL_FLASH_SIZE-0),
+ offset: 0x00000000,
+ },
+};
+
+#elif defined( CONFIG_ROOTFS_SQUASH ) +#ifndef CONFIG_RTL_FLASH_DUAL_IMAGE_ENABLE +static struct mtd_partition rtl8196_parts1[] = { + { + name: "boot+cfg", + size: (CONFIG_RTL_LINUX_IMAGE_OFFSET - 0), + offset: 0x00000000, + }, + { + name: "kernel", + size: (CONFIG_RTL_ROOT_IMAGE_OFFSET - CONFIG_RTL_LINUX_IMAGE_OFFSET), + offset: CONFIG_RTL_LINUX_IMAGE_OFFSET, + }, + { + name: "rootfs", +#ifdef CONFIG_RTL_TWO_SPI_FLASH_ENABLE +#ifdef CONFIG_MTD_CONCAT + size: (CONFIG_RTL_SPI_FLASH1_SIZE + CONFIG_RTL_SPI_FLASH2_SIZE - CONFIG_RTL_ROOT_IMAGE_OFFSET), +#else + size: (CONFIG_RTL_SPI_FLASH1_SIZE - CONFIG_RTL_ROOT_IMAGE_OFFSET), +#endif +#else + size: (CONFIG_RTL_FLASH_SIZE - CONFIG_RTL_ROOT_IMAGE_OFFSET), +#endif + offset: CONFIG_RTL_ROOT_IMAGE_OFFSET, + }, + { + name: "firmware", + size: (CONFIG_RTL_FLASH_SIZE - CONFIG_RTL_LINUX_IMAGE_OFFSET), + offset: CONFIG_RTL_LINUX_IMAGE_OFFSET, + }, +}; + +#else //!CONFIG_RTL_FLASH_DUAL_IMAGE_ENABLE
+static struct mtd_partition rtl8196_parts1[] = {
+ {
+ name: "boot+cfg+linux(bank1)",
+ size: (CONFIG_RTL_ROOT_IMAGE_OFFSET-0),
+ offset: 0x00000000,
+ },
+ {
+ name: "root fs(bank1)",
+ size: (CONFIG_RTL_FLASH_SIZE-CONFIG_RTL_ROOT_IMAGE_OFFSET),
+ offset: (CONFIG_RTL_ROOT_IMAGE_OFFSET),
+ },
+ {
+ name: "inux(bank2)",
+ size: (CONFIG_RTL_ROOT_IMAGE_OFFSET-0),
+ offset: CONFIG_RTL_FLASH_DUAL_IMAGE_OFFSET,
+ },
+ {
+ name: "root fs(bank2)",
+ size: (CONFIG_RTL_FLASH_SIZE-CONFIG_RTL_ROOT_IMAGE_OFFSET),
+ offset: CONFIG_RTL_FLASH_DUAL_IMAGE_OFFSET+(CONFIG_RTL_ROOT_IMAGE_OFFSET),
+ }
+
+};
+#endif //CONFIG_RTL_FLASH_DUAL_IMAGE_ENABLE
+
+#else
+#error "unknow flash filesystem type"
+#endif
+
+#else // !CONFIG_RTL_FLASH_MAPPING_ENABLE
+static struct mtd_partition rtl8196_parts1[] = {
+ {
+ name: "boot+cfg+linux",
+ size: 0x00130000,
+ offset:0x00000000,
+ },
+ {
+ name: "root fs",
+ size: 0x002D0000,
+ offset: 0x00130000,
+ }
+};
+#endif
+
+#ifdef CONFIG_RTL_TWO_SPI_FLASH_ENABLE
+static struct mtd_partition rtl8196_parts2[] = {
+ {
+ name: "data",
+ size: CONFIG_RTL_SPI_FLASH2_SIZE,
+ offset: 0x00000000,
+ }
+};
+#endif
+
+#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
+#define init_rtl8196_map init_module
+#define cleanup_rtl8196_map cleanup_module
+#endif
+
+#define mod_init_t static int __init
+#define mod_exit_t static void __exit
+
+mod_init_t init_rtl8196_map(void)
+{
+ int i,chips;
+#ifdef SIZE_REMAINING
+ struct mtd_partition *last_partition;
+#endif
+ chips = 0;
+ for (i=0;i<MAX_SPI_CS;i++) {
+ simple_map_init(&spi_map[i]);
+ my_sub_mtd[i] = do_map_probe(spi_map[i].name, &spi_map[i]);
+
+ if (my_sub_mtd[i]) {
+ my_sub_mtd[i]->owner = THIS_MODULE;
+ chips++;
+ //printk("%s, %d, i=%d, chips=%d\n", __FUNCTION__, __LINE__, i, chips);
+ }
+ }
+
+ #ifdef CONFIG_MTD_CONCAT
+ if (chips == 1)
+ mymtd = my_sub_mtd[0];
+ else
+ {
+ //printk("%s, %d\n, size=0x%x\n", __FUNCTION__, __LINE__, my_sub_mtd[0]->size);
+ mymtd = mtd_concat_create(&my_sub_mtd[0], chips,"flash_concat");
+ //printk("%s, %d, size=0x%x\n", __FUNCTION__, __LINE__, (mymtd->size));
+ }
+
+ if (!mymtd) {
+ printk("Cannot create flash concat device\n");
+ return -ENXIO;
+ }
+ #endif
+
+#ifdef SIZE_REMAINING
+#ifdef CONFIG_MTD_CONCAT
+ last_partition = &rtl8196_parts1[ ARRAY_SIZE(rtl8196_parts1) - 1 ];
+ if( last_partition->size == SIZE_REMAINING ) {
+ if( last_partition->offset > mymtd->size ) {
+ printk( "Warning: partition offset larger than mtd size\n" );
+ }else{
+ last_partition->size = mymtd->size - last_partition->offset;
+ }
+#ifdef DEBUG_MAP
+ printk(KERN_NOTICE "last_partition size: 0x%x\n",last_partition->size );
+#endif
+ }
+#else
+ //for (i=0;i<chips;i++)
+ {
+ last_partition = &rtl8196_parts1[ ARRAY_SIZE(rtl8196_parts1) - 1 ];
+ if( last_partition->size == SIZE_REMAINING ) {
+ if( last_partition->offset > my_sub_mtd[0]->size ) {
+ printk( "Warning: partition offset larger than mtd size\n" );
+ }else{
+ last_partition->size = my_sub_mtd[0]->size - last_partition->offset;
+ }
+#ifdef DEBUG_MAP
+ printk(KERN_NOTICE "last_partition size: 0x%x\n",last_partition->size );
+#endif
+ }
+ last_partition = &rtl8196_parts2[ ARRAY_SIZE(rtl8196_parts2) - 1 ];
+ if( last_partition->size == SIZE_REMAINING ) {
+ if( last_partition->offset > my_sub_mtd[1]->size ) {
+ printk( "Warning: partition offset larger than mtd size\n" );
+ }else{
+ last_partition->size = my_sub_mtd[1]->size - last_partition->offset;
+ }
+ #ifdef DEBUG_MAP
+ printk(KERN_NOTICE "last_partition size: 0x%x\n",last_partition->size );
+ #endif
+ }
+ }
+#endif
+#endif
+
+
+ #ifdef CONFIG_MTD_CONCAT
+ add_mtd_partitions(mymtd, rtl8196_parts1, ARRAY_SIZE(rtl8196_parts1));
+ #ifdef DEBUG_MAP
+ printk(KERN_NOTICE "name=%s, size=0x%x\n", mymtd->name, mymtd->size);
+ #endif
+ #else
+ if (my_sub_mtd[0]) {
+ add_mtd_partitions(my_sub_mtd[0], rtl8196_parts1,
+ ARRAY_SIZE(rtl8196_parts1));
+ #ifdef DEBUG_MAP
+ printk(KERN_NOTICE "name=%s, size=0x%x\n", my_sub_mtd[0]->name,
+ my_sub_mtd[0]->size);
+ #endif
+ }
+#ifdef CONFIG_RTL_TWO_SPI_FLASH_ENABLE
+ if (my_sub_mtd[1]) {
+ add_mtd_partitions(my_sub_mtd[1], rtl8196_parts2,
+ ARRAY_SIZE(rtl8196_parts2));
+ #ifdef DEBUG_MAP
+ printk(KERN_NOTICE "name=%s, size=0x%x\n", my_sub_mtd[1]->name,
+ my_sub_mtd[1]->size);
+ #endif
+ }
+#endif
+ #endif
+
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, 0);
+ return 0;
+}
+
+mod_exit_t cleanup_rtl8196_map(void)
+{
+ int i;
+
+ if (mymtd) {
+ del_mtd_partitions(mymtd);
+ map_destroy(mymtd);
+ }
+
+ for(i=0; i<MAX_SPI_CS; i++)
+ {
+ if (my_sub_mtd[i])
+ {
+ del_mtd_partitions(my_sub_mtd[i]);
+ map_destroy(my_sub_mtd[i]);
+ }
+ }
+}
+
+MODULE_LICENSE("GPL");
+module_init(init_rtl8196_map);
+module_exit(cleanup_rtl8196_map);
+
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