166 lines
4.5 KiB
Diff
166 lines
4.5 KiB
Diff
--- /dev/null
|
|
+++ b/drivers/mtd/maps/gumstix-flash.c
|
|
@@ -0,0 +1,136 @@
|
|
+/*
|
|
+ * Map driver for the Gumstix platform
|
|
+ *
|
|
+ * Author: Craig Hughes
|
|
+ *
|
|
+ * This program is free software; you can redistribute it and/or modify
|
|
+ * it under the terms of the GNU General Public License version 2 as
|
|
+ * published by the Free Software Foundation.
|
|
+ */
|
|
+
|
|
+#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/hardware.h>
|
|
+#include <asm/arch/gumstix.h>
|
|
+
|
|
+
|
|
+#define ROM_ADDR 0x00000000
|
|
+#define FLASH_ADDR 0x00000000
|
|
+
|
|
+#define WINDOW_SIZE 64*1024*1024
|
|
+
|
|
+static struct map_info gumstix_flash_maps[1] = { {
|
|
+ .name = "Gumstix Flash ROM",
|
|
+ .size = WINDOW_SIZE,
|
|
+ .phys = FLASH_ADDR,
|
|
+ .bankwidth = 2,
|
|
+} };
|
|
+
|
|
+static struct mtd_partition gumstix_flash_partitions[] = {
|
|
+ {
|
|
+ .name = "Bootloader",
|
|
+ .size = 0x00040000,
|
|
+ .offset = FLASH_ADDR
|
|
+ },{
|
|
+ .name = "RootFS",
|
|
+ .size = MTDPART_SIZ_FULL,
|
|
+ .offset = MTDPART_OFS_APPEND
|
|
+ }
|
|
+};
|
|
+
|
|
+static struct mtd_info *mymtds[1];
|
|
+static struct mtd_partition *parsed_parts[1];
|
|
+static int nr_parsed_parts[1];
|
|
+
|
|
+static const char *probes[] = { NULL };
|
|
+
|
|
+static int __init gumstix_flashmap_init(void)
|
|
+{
|
|
+ int ret = 0, i;
|
|
+
|
|
+ for (i = 0; i < 1; i++) {
|
|
+ gumstix_flash_maps[i].virt = ioremap(gumstix_flash_maps[i].phys, WINDOW_SIZE);
|
|
+ if (!gumstix_flash_maps[i].virt) {
|
|
+ printk(KERN_WARNING "Failed to ioremap %s\n", gumstix_flash_maps[i].name);
|
|
+ if (!ret)
|
|
+ ret = -ENOMEM;
|
|
+ continue;
|
|
+ }
|
|
+ simple_map_init(&gumstix_flash_maps[i]);
|
|
+
|
|
+ printk(KERN_NOTICE "Probing %s at physical address 0x%08lx (%d-bit bankwidth)\n",
|
|
+ gumstix_flash_maps[i].name, gumstix_flash_maps[i].phys,
|
|
+ gumstix_flash_maps[i].bankwidth * 8);
|
|
+
|
|
+ mymtds[i] = do_map_probe("cfi_probe", &gumstix_flash_maps[i]);
|
|
+
|
|
+ if (!mymtds[i]) {
|
|
+ iounmap((void *)gumstix_flash_maps[i].virt);
|
|
+ if (gumstix_flash_maps[i].cached)
|
|
+ iounmap(gumstix_flash_maps[i].cached);
|
|
+ if (!ret)
|
|
+ ret = -EIO;
|
|
+ continue;
|
|
+ }
|
|
+ mymtds[i]->owner = THIS_MODULE;
|
|
+
|
|
+ ret = parse_mtd_partitions(mymtds[i], probes,
|
|
+ &parsed_parts[i], 0);
|
|
+
|
|
+ if (ret > 0)
|
|
+ nr_parsed_parts[i] = ret;
|
|
+ }
|
|
+
|
|
+ if (!mymtds[0])
|
|
+ return ret;
|
|
+
|
|
+ for (i = 0; i < 1; i++) {
|
|
+ if (!mymtds[i]) {
|
|
+ printk(KERN_WARNING "%s is absent. Skipping\n", gumstix_flash_maps[i].name);
|
|
+ } else if (nr_parsed_parts[i]) {
|
|
+ add_mtd_partitions(mymtds[i], parsed_parts[i], nr_parsed_parts[i]);
|
|
+ } else if (!i) {
|
|
+ printk("Using static partitions on %s\n", gumstix_flash_maps[i].name);
|
|
+ add_mtd_partitions(mymtds[i], gumstix_flash_partitions, ARRAY_SIZE(gumstix_flash_partitions));
|
|
+ } else {
|
|
+ printk("Registering %s as whole device\n", gumstix_flash_maps[i].name);
|
|
+ add_mtd_device(mymtds[i]);
|
|
+ }
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void __exit gumstix_flashmap_cleanup(void)
|
|
+{
|
|
+ int i;
|
|
+ for (i = 0; i < 1; i++) {
|
|
+ if (!mymtds[i])
|
|
+ continue;
|
|
+
|
|
+ if (nr_parsed_parts[i] || !i)
|
|
+ del_mtd_partitions(mymtds[i]);
|
|
+ else
|
|
+ del_mtd_device(mymtds[i]);
|
|
+
|
|
+ map_destroy(mymtds[i]);
|
|
+ iounmap((void *)gumstix_flash_maps[i].virt);
|
|
+ if (gumstix_flash_maps[i].cached)
|
|
+ iounmap(gumstix_flash_maps[i].cached);
|
|
+
|
|
+ if (parsed_parts[i])
|
|
+ kfree(parsed_parts[i]);
|
|
+ }
|
|
+}
|
|
+
|
|
+module_init(gumstix_flashmap_init);
|
|
+module_exit(gumstix_flashmap_cleanup);
|
|
+
|
|
+MODULE_LICENSE("GPL");
|
|
+MODULE_AUTHOR("Gumstix, Inc. <gumstix-users@lists.sf.net>");
|
|
+MODULE_DESCRIPTION("MTD map driver for the Gumstix Platform");
|
|
--- a/drivers/mtd/maps/Kconfig
|
|
+++ b/drivers/mtd/maps/Kconfig
|
|
@@ -131,6 +131,13 @@ config MTD_SBC_GXX
|
|
More info at
|
|
<http://www.arcomcontrols.com/products/icp/pc104/processors/SBC_GX1.htm>.
|
|
|
|
+config MTD_GUMSTIX
|
|
+ tristate "CFI Flash device mapped on Gumstix"
|
|
+ depends on ARCH_GUMSTIX && MTD_CFI_INTELEXT && MTD_PARTITIONS
|
|
+ help
|
|
+ This provides a driver for the on-board flash of the Gumstix
|
|
+ single board computers.
|
|
+
|
|
config MTD_LUBBOCK
|
|
tristate "CFI Flash device mapped on Intel Lubbock XScale eval board"
|
|
depends on ARCH_LUBBOCK && MTD_CFI_INTELEXT && MTD_PARTITIONS
|
|
--- a/drivers/mtd/maps/Makefile
|
|
+++ b/drivers/mtd/maps/Makefile
|
|
@@ -21,6 +21,7 @@ obj-$(CONFIG_MTD_ICHXROM) += ichxrom.o
|
|
obj-$(CONFIG_MTD_CK804XROM) += ck804xrom.o
|
|
obj-$(CONFIG_MTD_TSUNAMI) += tsunami_flash.o
|
|
obj-$(CONFIG_MTD_LUBBOCK) += lubbock-flash.o
|
|
+obj-$(CONFIG_MTD_GUMSTIX) += gumstix-flash.o
|
|
obj-$(CONFIG_MTD_MAINSTONE) += mainstone-flash.o
|
|
obj-$(CONFIG_MTD_MBX860) += mbx860.o
|
|
obj-$(CONFIG_MTD_CEIVA) += ceiva.o
|