📄 s3c2410_wpq.c
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/*
* $Id: s3c2410_wpq.c *
* Normal mappings of chips in physical memory
*/
#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/config.h>
#include <linux/mtd/partitions.h>
#define WINDOW_ADDR 0x0
#define WINDOW_SIZE 0x4000000
#define BUSWIDTH 2
/*
#define WINDOW_ADDR CONFIG_MTD_PHYSMAP_START
#define WINDOW_SIZE CONFIG_MTD_PHYSMAP_LEN
#define BUSWIDTH CONFIG_MTD_PHYSMAP_BUSWIDTH
*/
static struct mtd_info *mymtd;
__u8 s3c2410_read8(struct map_info *map, unsigned long ofs)
{
return __raw_readb(map->map_priv_1 + ofs);
}
__u16 s3c2410_read16(struct map_info *map, unsigned long ofs)
{
return __raw_readw(map->map_priv_1 + ofs);
}
__u32 s3c2410_read32(struct map_info *map, unsigned long ofs)
{
return __raw_readl(map->map_priv_1 + ofs);
}
#ifdef CFI_WORD_64
__u64 s3c2410_read64(struct map_info *map, unsigned long ofs)
{
return __raw_readll(map->map_priv_1 + ofs);
}
#endif
void s3c2410_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
memcpy_fromio(to, map->map_priv_1 + from, len);
}
void s3c2410_write8(struct map_info *map, __u8 d, unsigned long adr)
{
__raw_writeb(d, map->map_priv_1 + adr);
mb();
}
void s3c2410_write16(struct map_info *map, __u16 d, unsigned long adr)
{
__raw_writew(d, map->map_priv_1 + adr);
mb();
}
void s3c2410_write32(struct map_info *map, __u32 d, unsigned long adr)
{
__raw_writel(d, map->map_priv_1 + adr);
mb();
}
#ifdef CFI_WORD_64
void s3c2410_write64(struct map_info *map, __u64 d, unsigned long adr)
{
__raw_writell(d, map->map_priv_1 + adr);
mb();
}
#endif
void s3c2410_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
memcpy_toio(map->map_priv_1 + to, from, len);
}
struct map_info s3c2410_map = {
name: "s3c2410 flash device",
size: WINDOW_SIZE,
buswidth: BUSWIDTH,
read8: s3c2410_read8,
read16: s3c2410_read16,
read32: s3c2410_read32,
#ifdef CFI_WORD_64
read64: s3c2410_read64,
#endif
copy_from: s3c2410_copy_from,
write8: s3c2410_write8,
write16: s3c2410_write16,
write32: s3c2410_write32,
#ifdef CFI_WORD_64
write64: s3c2410_write64,
#endif
copy_to: s3c2410_copy_to
map_priv_1: WINDOW_ADDR
map_priv_2: -1
};
static struct mtd_partition s3c2410_partitions[] = {
{
name: "vivi",
size: 0x020000,
offset: 0x00000,
mask_flags: MTD_WRITEABLE, /* force read-only */
}, {
name: "param",
size: 0x010000,
offset: 0x020000,
},
{
name: "kernel",
size: 0x0001c0000,
offset: 0x030000,
}, {
name: "root",
size: 0x0200000,
offset: 0x0200000,
}, {
name: "usr",
size: 0x01c8f000,
offset: 0x0400000,
}
};
int __init init_s3c2410(void)
{
static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", 0 };
const char **type;
printk(KERN_NOTICE "s3c2410 flash device: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR);
s3c2410_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);
if (!s3c2410_map.map_priv_1) {
printk("Failed to ioremap\n");
return -EIO;
}
mymtd =do_map_probe("jedec_probe",&s3c2410_map);
if (!mymtd) {
mymtd =do_map_probe("cfi_probe",&s3c2410_map);
}
if (mymtd) {
mymtd->module = THIS_MODULE;
mymtd->erasesize = 0x40000;
return add_mtd_partitions (mymtd,s3c2410_partitions,sizeof(s3c2410_partitions)/sizeof(struct mtd_partition));
}
iounmap((void *)s3c2410_map.map_priv_1);
return -ENXIO;
}
static void __exit cleanup_s3c2410(void)
{
if (mymtd) {
del_mtd_device(mymtd);
map_destroy(mymtd);
}
if (s3c2410_map.map_priv_1) {
iounmap((void *)s3c2410_map.map_priv_1);
s3c2410_map.map_priv_1 = 0;
}
}
module_init(init_s3c2410);
module_exit(cleanup_s3c2410);、
6.配置内核
Linux Kernel v2.4.18-rmk7-pxa1 Configuration
Linux Kernel v2.4.18-rmk7-pxa1 Configuration
------------------------------------------------------------------------------
+-------------------- Memory Technology Devices (MTD) --------------------+
| Arrow keys navigate the menu. <Enter> selects submenus --->. |
| Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, |
| <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help. |
| Legend: [*] built-in [ ] excluded <M> module < > module capable |
| +---------------------------------------------------------------------+ |
| | <*> Memory Technology Device (MTD) support | |
| | [*] Debugging | |
| | (3) Debugging verbosity (0 = quiet, 3 = noisy) | |
| | <*> MTD partitioning support | |
| | <*> MTD concatenating support | |
| | < > RedBoot partition table parsing | |
| | < > Command line partition table parsing | |
| | < > ARM Firmware Suite partition parsing | |
| | --- User Modules And Translation Layers | |
| | <*> Direct char device access to MTD devices | |
| | <*> Caching block device access to MTD devices | |
| < > FTL (Flash Translation Layer) support | |
| | < > NFTL (NAND Flash Translation Layer) support | |
| | RAM/ROM/Flash chip drivers ---> | |
| | Mapping drivers for chip access ---> | |
| | Self-contained MTD device drivers ---> | |
| | NAND Flash Device Drivers ---> | |
| +---------------------------------------------------------------------+ |
+------------------------
| +---------v(+)--------------------------------------------------------+ |
+-------------------------------------------------------------------------+
| <Select> < Exit > < Help > |
+---------------------------------------------------
Linux Kernel v2.4.18-rmk7-pxa1 Configuration
------------------------------------------------------------------------------
+---------------------- RAM/ROM/Flash chip drivers -----------------------+
| Arrow keys navigate the menu. <Enter> selects submenus --->. |
| Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, |
| <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help. |
| Legend: [*] built-in [ ] excluded <M> module < > module capable |
| +---------------------------------------------------------------------+ |
| |<*> Detect flash chips by Common Flash Interface (CFI) probe | |
| |<*> Detect JEDEC JESD21c compatible flash chips | |
| |[ ] Flash chip driver advanced configuration options | |
| |< > Support for Intel/Sharp flash chips | |
| |< > Support for AMD/Fujitsu flash chips | |
| |< > Support for RAM chips in bus mapping | |
| |< > Support for ROM chips in bus mapping | |
| |< > Support for absent chips in bus mapping | |
| |[ ] Older (theoretically obsoleted now) drivers for non-CFI chips | |
| | | |
| | | |
| +---------------------------------------------------------------------+ |
+-------------------------------------------------------------------------+
| <Select> < Exit > < Help > |
+-------------------------------------------------------------------------+
Linux Kernel v2.4.18-rmk7-pxa1 Configuration
------------------------------------------------------------------------------
+-------------------- Mapping drivers for chip access --------------------+
| Arrow keys navigate the menu. <Enter> selects submenus --->. |
| Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, |
| <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help. |
| Legend: [*] built-in [ ] excluded <M> module < > module capable |
| +---------------------------------------------------------------------+ |
| | <*> CFI Flash device in physical memory map | |
| | (8000000) Physical start address of flash mapping | |
| | (4000000) Physical length of flash mapping | |
| | (2) Bus width in octets | |
| | <*> CFI Flash device mapped on S3C2410 | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| +---------------------------------------------------------------------+ |
+-------------------------------------------------------------------------+
| <Select> < Exit > < Help > |
+-------------------------------------------------------------------------+
Linux Kernel v2.4.18-rmk7-pxa1 Configuration
------------------------------------------------------------------------------
+----------------------------- File systems ------------------------------+
| Arrow keys navigate the menu. <Enter> selects submenus --->. |
| Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, |
| <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help. |
| Legend: [*] built-in [ ] excluded <M> module < > module capable |
| +---------------------------------------------------------------------+ |
| | [ ] Quota support | |
| | < > Kernel automounter support | |
| | < > Kernel automounter version 4 support (also supports v3) | |
| | < > Reiserfs support | |
| | < > ADFS file system support | |
| | < > Amiga FFS file system support (EXPERIMENTAL) | |
| | < > Apple Macintosh file system support (EXPERIMENTAL) | |
| | < > BFS file system support (EXPERIMENTAL) | |
| | <*> Ext3 journalling file system support (EXPERIMENTAL) | |
| | [ ] JBD (ext3) debugging support | |
| | <*> DOS FAT fs support | |
| < > MSDOS fs support | |
| | <*> VFAT (Windows-95) fs support | |
| | < > EFS file system support (read only) (EXPERIMENTAL) | |
| | < > Journalling Flash File System (JFFS) support | |
| | <*> Journalling Flash File System v2 (JFFS2) support | |
| | (2) JFFS2 debugging verbosity (0 = quiet, 2 = noisy) | |
| | <*> Compressed ROM file system support | |
| | [*] Virtual memory file system support (former shm fs) | |
| | <*> Simple RAM-based file system support | |
| | < > ISO 9660 CDROM file system support | |
| | < > Minix fs support
| < > FreeVxFS file system support (VERITAS VxFS(TM) compatible) | |
| | < > NTFS file system support (read only) | |
| | < > OS/2 HPFS file system support | |
| | [*] /proc file system support | |
| | [*] /dev file system support (EXPERIMENTAL) | |
| | [*] Automatically mount at boot | |
| | [ ] Debug devfs | |
| | [*] /dev/pts file system for Unix98 PTYs | |
| | < > QNX4 file system support (read only) (EXPERIMENTAL) | |
| | < > ROM file system support | |
| | <*> Second extended fs support
| [ ] Debug devfs | |
| | [*] /dev/pts file system for Unix98 PTYs | |
| | < > QNX4 file system support (read only) (EXPERIMENTAL) | |
| | < > ROM file system support | |
| | <*> Second extended fs support | |
| | < > System V/Xenix/V7/Coherent file system support | |
| | < > UDF file system support (read only) | |
| | < > UFS file system support (read only) | |
| | Network File Systems ---> | |
| | Partition Types ---> | |
| | Native Language Support --->
| +--v(+)---------------------------------------------------------------+ |
+-------------------------------------------------------------------------+
| <Select> < Exit > < Help > |
+-------------------------------------------------------------------------+
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