forked from Minki/linux
[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: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Yoichi Yuasa
Ralf Baechle
parent
575d5e72aa
commit
c316eb1eee
@ -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)
|
||||
|
||||
61
arch/mips/cobalt/mtd.c
Normal file
61
arch/mips/cobalt/mtd.c
Normal file
@ -0,0 +1,61 @@
|
||||
/*
|
||||
* 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);
|
||||
@ -1,7 +1,7 @@
|
||||
#
|
||||
# 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
|
||||
|
||||
Loading…
Reference in New Issue
Block a user