mtd/drivers/mtd/maps walnut.c, NONE, 1.1 Config.in, 1.70,
1.71 Kconfig, 1.39, 1.40 Makefile.common, 1.20, 1.21
Heikki O Lindholm
holindho at infradead.org
Thu Dec 9 15:01:08 EST 2004
Update of /home/cvs/mtd/drivers/mtd/maps
In directory phoenix.infradead.org:/tmp/cvs-serv18949/drivers/mtd/maps
Modified Files:
Config.in Kconfig Makefile.common
Added Files:
walnut.c
Log Message:
Added IBM 405GP Walnut flash mapping.
--- NEW FILE walnut.c ---
/*
* $Id $
*
* Mapping for Walnut flash
* (used ebony.c as a "framework")
*
* Heikki Lindholm <holindho at 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 <linux/config.h>
#include <linux/version.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)!");
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");
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");
return -ENXIO;
}
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 at infradead.org>");
MODULE_DESCRIPTION("MTD map and partitions for IBM 405GP Walnut boards");
Index: Config.in
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/maps/Config.in,v
retrieving revision 1.70
retrieving revision 1.71
diff -u -r1.70 -r1.71
--- Config.in 9 Dec 2004 18:39:54 -0000 1.70
+++ Config.in 9 Dec 2004 20:01:05 -0000 1.71
@@ -65,6 +65,7 @@
fi
dep_tristate ' CFI Flash device mapped on IBM Beech' CONFIG_MTD_BEECH $CONFIG_MTD_CFI $CONFIG_BEECH
dep_tristate ' CFI Flash device mapped on IBM Arctic' CONFIG_MTD_ARCTIC $CONFIG_MTD_CFI $CONFIG_ARCTIC2
+ dep_tristate ' Flash device mapped on IBM Walnut' CONFIG_MTD_WALNUT $CONFIG_MTD_JEDECPROBE $CONFIG_WALNUT
fi
if [ "$CONFIG_440" = "y" ]; then
dep_tristate ' Flash devices mapped on IBM Ebony' CONFIG_MTD_EBONY $CONFIG_MTD_JEDECPROBE $CONFIG_EBONY
Index: Kconfig
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/maps/Kconfig,v
retrieving revision 1.39
retrieving revision 1.40
diff -u -r1.39 -r1.40
--- Kconfig 9 Dec 2004 18:39:54 -0000 1.39
+++ Kconfig 9 Dec 2004 20:01:05 -0000 1.40
@@ -373,6 +373,14 @@
Arctic board. If you have one of these boards and would like to
use the flash chips on it, say 'Y'.
+config MTD_WALNUT
+ tristate "Flash device mapped on IBM 405GP Walnut"
+ depends on MTD_JEDECPROBE && PPC32 && 40x && WALNUT
+ help
+ This enables access routines for the flash chips on the IBM 405GP
+ Walnut board. If you have one of these boards and would like to
+ use the flash chips on it, say 'Y'.
+
config MTD_EBONY
tristate "Flash devices mapped on IBM 440GP Ebony"
depends on MTD_JEDECPROBE && PPC32 && 44x && EBONY
Index: Makefile.common
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/maps/Makefile.common,v
retrieving revision 1.20
retrieving revision 1.21
diff -u -r1.20 -r1.21
--- Makefile.common 24 Nov 2004 19:42:51 -0000 1.20
+++ Makefile.common 9 Dec 2004 20:01:05 -0000 1.21
@@ -61,6 +61,7 @@
obj-$(CONFIG_MTD_OCOTEA) += ocotea.o
obj-$(CONFIG_MTD_BEECH) += beech-mtd.o
obj-$(CONFIG_MTD_ARCTIC) += arctic-mtd.o
+obj-$(CONFIG_MTD_WALNUT) += walnut.o
obj-$(CONFIG_MTD_H720X) += h720x-flash.o
obj-$(CONFIG_MTD_SBC8240) += sbc8240.o
obj-$(CONFIG_MTD_NOR_TOTO) += omap-toto-flash.o
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