提交 c316eb1e 编写于 作者: Y Yoichi Yuasa 提交者: Ralf Baechle

[MIPS] Add MTD device support for Cobalt

This patch has added MTD device support for Cobalt.
Moreover, removes old type FlashROM support.
Signed-off-by: NYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
上级 575d5e72
......@@ -5,5 +5,6 @@
obj-y := irq.o reset.o setup.o
obj-$(CONFIG_EARLY_PRINTK) += console.o
obj-$(CONFIG_MTD_PHYSMAP) += mtd.o
EXTRA_AFLAGS := $(CFLAGS)
/*
* Registration of Cobalt MTD device.
*
* Copyright (C) 2006 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
static struct mtd_partition cobalt_mtd_partitions[] = {
{
.name = "Colo",
.offset = 0x0,
.size = 0x80000,
},
};
static struct physmap_flash_data cobalt_flash_data = {
.width = 1,
.nr_parts = 1,
.parts = cobalt_mtd_partitions,
};
static struct resource cobalt_mtd_resource = {
.start = 0x1fc00000,
.end = 0x1fc7ffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device cobalt_mtd = {
.name = "physmap-flash",
.dev = {
.platform_data = &cobalt_flash_data,
},
.num_resources = 1,
.resource = &cobalt_mtd_resource,
};
static int __init cobalt_mtd_init(void)
{
platform_device_register(&cobalt_mtd);
return 0;
}
module_init(cobalt_mtd_init);
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.20
# Sun Feb 18 21:27:37 2007
# Mon Feb 19 14:51:58 2007
#
CONFIG_MIPS=y
......@@ -373,7 +373,88 @@ CONFIG_PROC_EVENTS=y
#
# Memory Technology Devices (MTD)
#
# CONFIG_MTD is not set
CONFIG_MTD=y
# CONFIG_MTD_DEBUG is not set
# CONFIG_MTD_CONCAT is not set
CONFIG_MTD_PARTITIONS=y
# CONFIG_MTD_REDBOOT_PARTS is not set
# CONFIG_MTD_CMDLINE_PARTS is not set
#
# User Modules And Translation Layers
#
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLKDEVS=y
# CONFIG_MTD_BLOCK is not set
# CONFIG_MTD_BLOCK_RO is not set
# CONFIG_FTL is not set
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set
#
# RAM/ROM/Flash chip drivers
#
# CONFIG_MTD_CFI is not set
CONFIG_MTD_JEDECPROBE=y
CONFIG_MTD_GEN_PROBE=y
# CONFIG_MTD_CFI_ADV_OPTIONS is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_CFI_I4 is not set
# CONFIG_MTD_CFI_I8 is not set
# CONFIG_MTD_CFI_INTELEXT is not set
CONFIG_MTD_CFI_AMDSTD=y
# CONFIG_MTD_CFI_STAA is not set
CONFIG_MTD_CFI_UTIL=y
# CONFIG_MTD_RAM is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set
# CONFIG_MTD_OBSOLETE_CHIPS is not set
#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_PHYSMAP_START=0x0
CONFIG_MTD_PHYSMAP_LEN=0
CONFIG_MTD_PHYSMAP_BANKWIDTH=0
# CONFIG_MTD_PLATRAM is not set
#
# Self-contained MTD device drivers
#
# CONFIG_MTD_PMC551 is not set
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLOCK2MTD is not set
#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOC2000 is not set
# CONFIG_MTD_DOC2001 is not set
# CONFIG_MTD_DOC2001PLUS is not set
#
# NAND Flash Device Drivers
#
# CONFIG_MTD_NAND is not set
# CONFIG_MTD_NAND_CAFE is not set
#
# OneNAND Flash Device Drivers
#
# CONFIG_MTD_ONENAND is not set
#
# Parallel port support
......@@ -901,6 +982,7 @@ CONFIG_CONFIGFS_FS=y
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_JFFS2_FS is not set
# CONFIG_CRAMFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_HPFS_FS is not set
......
......@@ -409,138 +409,6 @@ static int lcd_ioctl(struct inode *inode, struct file *file,
break;
}
// Erase the flash
case FLASH_Erase:{
int ctr = 0;
if ( !capable(CAP_SYS_ADMIN) ) return -EPERM;
pr_info(LCD "Erasing Flash\n");
// Chip Erase Sequence
WRITE_FLASH(kFlash_Addr1, kFlash_Data1);
WRITE_FLASH(kFlash_Addr2, kFlash_Data2);
WRITE_FLASH(kFlash_Addr1, kFlash_Erase3);
WRITE_FLASH(kFlash_Addr1, kFlash_Data1);
WRITE_FLASH(kFlash_Addr2, kFlash_Data2);
WRITE_FLASH(kFlash_Addr1, kFlash_Erase6);
while ((!dqpoll(0x00000000, 0xFF))
&& (!timeout(0x00000000))) {
ctr++;
}
if (READ_FLASH(0x07FFF0) == 0xFF) {
pr_info(LCD "Erase Successful\n");
} else if (timeout) {
pr_info(LCD "Erase Timed Out\n");
}
break;
}
// burn the flash
case FLASH_Burn:{
volatile unsigned long burn_addr;
unsigned long flags;
unsigned int i, index;
unsigned char *rom;
struct lcd_display display;
if ( !capable(CAP_SYS_ADMIN) ) return -EPERM;
if (copy_from_user
(&display, (struct lcd_display *) arg,
sizeof(struct lcd_display)))
return -EFAULT;
rom = kmalloc((128), GFP_ATOMIC);
if (rom == NULL) {
printk(KERN_ERR LCD "kmalloc() failed in %s\n",
__FUNCTION__);
return -ENOMEM;
}
pr_info(LCD "Starting Flash burn\n");
for (i = 0; i < FLASH_SIZE; i = i + 128) {
if (copy_from_user
(rom, display.RomImage + i, 128)) {
kfree(rom);
return -EFAULT;
}
burn_addr = kFlashBase + i;
spin_lock_irqsave(&lcd_lock, flags);
for (index = 0; index < (128); index++) {
WRITE_FLASH(kFlash_Addr1,
kFlash_Data1);
WRITE_FLASH(kFlash_Addr2,
kFlash_Data2);
WRITE_FLASH(kFlash_Addr1,
kFlash_Prog);
*((volatile unsigned char *)burn_addr) =
(volatile unsigned char) rom[index];
while ((!dqpoll (burn_addr,
(volatile unsigned char)
rom[index])) &&
(!timeout(burn_addr))) { }
burn_addr++;
}
spin_unlock_irqrestore(&lcd_lock, flags);
if (* ((volatile unsigned char *)
(burn_addr - 1)) ==
(volatile unsigned char)
rom[index - 1]) {
} else if (timeout) {
pr_info(LCD "Flash burn timed out\n");
}
}
kfree(rom);
pr_info(LCD "Flash successfully burned\n");
break;
}
// read the flash all at once
case FLASH_Read:{
unsigned char *user_bytes;
volatile unsigned long read_addr;
unsigned int i;
user_bytes =
&(((struct lcd_display *) arg)->RomImage[0]);
if (!access_ok
(VERIFY_WRITE, user_bytes, FLASH_SIZE))
return -EFAULT;
pr_info(LCD "Reading Flash");
for (i = 0; i < FLASH_SIZE; i++) {
unsigned char tmp_byte;
read_addr = kFlashBase + i;
tmp_byte =
*((volatile unsigned char *)
read_addr);
if (__put_user(tmp_byte, &user_bytes[i]))
return -EFAULT;
}
break;
}
default:
return -EINVAL;
......@@ -644,42 +512,6 @@ static void __exit lcd_exit(void)
misc_deregister(&lcd_dev);
}
//
// Function: dqpoll
//
// Description: Polls the data lines to see if the flash is busy
//
// In: address, byte data
//
// Out: 0 = busy, 1 = write or erase complete
//
//
static int dqpoll(volatile unsigned long address, volatile unsigned char data)
{
volatile unsigned char dq7;
dq7 = data & 0x80;
return ((READ_FLASH(address) & 0x80) == dq7);
}
//
// Function: timeout
//
// Description: Checks to see if erase or write has timed out
// By polling dq5
//
// In: address
//
//
// Out: 0 = not timed out, 1 = timed out
static int timeout(volatile unsigned long address)
{
return (READ_FLASH(address) & 0x20) == 0x20;
}
module_init(lcd_init);
module_exit(lcd_exit);
......
......@@ -14,11 +14,7 @@
// function headers
static int dqpoll(volatile unsigned long, volatile unsigned char );
static int timeout(volatile unsigned long);
#define LCD_CHARS_PER_LINE 40
#define FLASH_SIZE 524288
#define MAX_IDLE_TIME 120
struct lcd_display {
......@@ -54,26 +50,6 @@ struct lcd_display {
#define LCDTimeoutValue 0xfff
// Flash definitions AMD 29F040
#define kFlashBase 0x0FC00000
#define kFlash_Addr1 0x5555
#define kFlash_Addr2 0x2AAA
#define kFlash_Data1 0xAA
#define kFlash_Data2 0x55
#define kFlash_Prog 0xA0
#define kFlash_Erase3 0x80
#define kFlash_Erase6 0x10
#define kFlash_Read 0xF0
#define kFlash_ID 0x90
#define kFlash_VenAddr 0x00
#define kFlash_DevAddr 0x01
#define kFlash_VenID 0x01
#define kFlash_DevID 0xA4 // 29F040
//#define kFlash_DevID 0xAD // 29F016
// Macros
#define LCDWriteData(x) outl((x << 24), kLCD_DR)
......@@ -89,9 +65,6 @@ struct lcd_display {
#define WRITE_GAL(x,y) outl(y, 0x04000000 | (x))
#define BusyCheck() while ((LCDReadInst & 0x80) == 0x80)
#define WRITE_FLASH(x,y) outb((char)y, kFlashBase | (x))
#define READ_FLASH(x) (inb(kFlashBase | (x)))
/*
......@@ -124,11 +97,6 @@ struct lcd_display {
// Button defs
#define BUTTON_Read 50
// Flash command codes
#define FLASH_Erase 60
#define FLASH_Burn 61
#define FLASH_Read 62
// Ethernet LINK check hackaroo
#define LINK_Check 90
......
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