59018b6d2a
Once upon a time, the MTD repository was using CVS. This patch therefore removes all usages of the no longer updated CVS keywords from the MTD code. This also includes code that printed them to the user. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
122 lines
2.9 KiB
C
122 lines
2.9 KiB
C
/*
|
|
* Mapping for Walnut flash
|
|
* (used ebony.c as a "framework")
|
|
*
|
|
* Heikki Lindholm <holindho@infradead.org>
|
|
*
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/map.h>
|
|
#include <linux/mtd/partitions.h>
|
|
#include <asm/io.h>
|
|
#include <asm/ibm4xx.h>
|
|
#include <platforms/4xx/walnut.h>
|
|
|
|
/* these should be in platforms/4xx/walnut.h ? */
|
|
#define WALNUT_FLASH_ONBD_N(x) (x & 0x02)
|
|
#define WALNUT_FLASH_SRAM_SEL(x) (x & 0x01)
|
|
#define WALNUT_FLASH_LOW 0xFFF00000
|
|
#define WALNUT_FLASH_HIGH 0xFFF80000
|
|
#define WALNUT_FLASH_SIZE 0x80000
|
|
|
|
static struct mtd_info *flash;
|
|
|
|
static struct map_info walnut_map = {
|
|
.name = "Walnut flash",
|
|
.size = WALNUT_FLASH_SIZE,
|
|
.bankwidth = 1,
|
|
};
|
|
|
|
/* Actually, OpenBIOS is the last 128 KiB of the flash - better
|
|
* partitioning could be made */
|
|
static struct mtd_partition walnut_partitions[] = {
|
|
{
|
|
.name = "OpenBIOS",
|
|
.offset = 0x0,
|
|
.size = WALNUT_FLASH_SIZE,
|
|
/*.mask_flags = MTD_WRITEABLE, */ /* force read-only */
|
|
}
|
|
};
|
|
|
|
int __init init_walnut(void)
|
|
{
|
|
u8 fpga_brds1;
|
|
void *fpga_brds1_adr;
|
|
void *fpga_status_adr;
|
|
unsigned long flash_base;
|
|
|
|
/* this should already be mapped (platform/4xx/walnut.c) */
|
|
fpga_status_adr = ioremap(WALNUT_FPGA_BASE, 8);
|
|
if (!fpga_status_adr)
|
|
return -ENOMEM;
|
|
|
|
fpga_brds1_adr = fpga_status_adr+5;
|
|
fpga_brds1 = readb(fpga_brds1_adr);
|
|
/* iounmap(fpga_status_adr); */
|
|
|
|
if (WALNUT_FLASH_ONBD_N(fpga_brds1)) {
|
|
printk("The on-board flash is disabled (U79 sw 5)!");
|
|
iounmap(fpga_status_adr);
|
|
return -EIO;
|
|
}
|
|
if (WALNUT_FLASH_SRAM_SEL(fpga_brds1))
|
|
flash_base = WALNUT_FLASH_LOW;
|
|
else
|
|
flash_base = WALNUT_FLASH_HIGH;
|
|
|
|
walnut_map.phys = flash_base;
|
|
walnut_map.virt =
|
|
(void __iomem *)ioremap(flash_base, walnut_map.size);
|
|
|
|
if (!walnut_map.virt) {
|
|
printk("Failed to ioremap flash.\n");
|
|
iounmap(fpga_status_adr);
|
|
return -EIO;
|
|
}
|
|
|
|
simple_map_init(&walnut_map);
|
|
|
|
flash = do_map_probe("jedec_probe", &walnut_map);
|
|
if (flash) {
|
|
flash->owner = THIS_MODULE;
|
|
add_mtd_partitions(flash, walnut_partitions,
|
|
ARRAY_SIZE(walnut_partitions));
|
|
} else {
|
|
printk("map probe failed for flash\n");
|
|
iounmap(fpga_status_adr);
|
|
return -ENXIO;
|
|
}
|
|
|
|
iounmap(fpga_status_adr);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit cleanup_walnut(void)
|
|
{
|
|
if (flash) {
|
|
del_mtd_partitions(flash);
|
|
map_destroy(flash);
|
|
}
|
|
|
|
if (walnut_map.virt) {
|
|
iounmap((void *)walnut_map.virt);
|
|
walnut_map.virt = 0;
|
|
}
|
|
}
|
|
|
|
module_init(init_walnut);
|
|
module_exit(cleanup_walnut);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Heikki Lindholm <holindho@infradead.org>");
|
|
MODULE_DESCRIPTION("MTD map and partitions for IBM 405GP Walnut boards");
|