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path: root/drivers/mtd/maps/cdb89712.c
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Diffstat (limited to 'drivers/mtd/maps/cdb89712.c')
-rw-r--r--drivers/mtd/maps/cdb89712.c268
1 files changed, 268 insertions, 0 deletions
diff --git a/drivers/mtd/maps/cdb89712.c b/drivers/mtd/maps/cdb89712.c
new file mode 100644
index 0000000..ab15dac
--- /dev/null
+++ b/drivers/mtd/maps/cdb89712.c
@@ -0,0 +1,268 @@
+/*
+ * Flash on Cirrus CDB89712
+ *
+ * $Id: cdb89712.c,v 1.10 2004/11/04 13:24:14 gleixner Exp $
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+
+
+
+static struct mtd_info *flash_mtd;
+
+struct map_info cdb89712_flash_map = {
+ .name = "flash",
+ .size = FLASH_SIZE,
+ .bankwidth = FLASH_WIDTH,
+ .phys = FLASH_START,
+};
+
+struct resource cdb89712_flash_resource = {
+ .name = "Flash",
+ .start = FLASH_START,
+ .end = FLASH_START + FLASH_SIZE - 1,
+ .flags = IORESOURCE_IO | IORESOURCE_BUSY,
+};
+
+static int __init init_cdb89712_flash (void)
+{
+ int err;
+
+ if (request_resource (&ioport_resource, &cdb89712_flash_resource)) {
+ printk(KERN_NOTICE "Failed to reserve Cdb89712 FLASH space\n");
+ err = -EBUSY;
+ goto out;
+ }
+
+ cdb89712_flash_map.virt = ioremap(FLASH_START, FLASH_SIZE);
+ if (!cdb89712_flash_map.virt) {
+ printk(KERN_NOTICE "Failed to ioremap Cdb89712 FLASH space\n");
+ err = -EIO;
+ goto out_resource;
+ }
+ simple_map_init(&cdb89712_flash_map);
+ flash_mtd = do_map_probe("cfi_probe", &cdb89712_flash_map);
+ if (!flash_mtd) {
+ flash_mtd = do_map_probe("map_rom", &cdb89712_flash_map);
+ if (flash_mtd)
+ flash_mtd->erasesize = 0x10000;
+ }
+ if (!flash_mtd) {
+ printk("FLASH probe failed\n");
+ err = -ENXIO;
+ goto out_ioremap;
+ }
+
+ flash_mtd->owner = THIS_MODULE;
+
+ if (add_mtd_device(flash_mtd)) {
+ printk("FLASH device addition failed\n");
+ err = -ENOMEM;
+ goto out_probe;
+ }
+
+ return 0;
+
+out_probe:
+ map_destroy(flash_mtd);
+ flash_mtd = 0;
+out_ioremap:
+ iounmap((void *)cdb89712_flash_map.virt);
+out_resource:
+ release_resource (&cdb89712_flash_resource);
+out:
+ return err;
+}
+
+
+
+
+
+static struct mtd_info *sram_mtd;
+
+struct map_info cdb89712_sram_map = {
+ .name = "SRAM",
+ .size = SRAM_SIZE,
+ .bankwidth = SRAM_WIDTH,
+ .phys = SRAM_START,
+};
+
+struct resource cdb89712_sram_resource = {
+ .name = "SRAM",
+ .start = SRAM_START,
+ .end = SRAM_START + SRAM_SIZE - 1,
+ .flags = IORESOURCE_IO | IORESOURCE_BUSY,
+};
+
+static int __init init_cdb89712_sram (void)
+{
+ int err;
+
+ if (request_resource (&ioport_resource, &cdb89712_sram_resource)) {
+ printk(KERN_NOTICE "Failed to reserve Cdb89712 SRAM space\n");
+ err = -EBUSY;
+ goto out;
+ }
+
+ cdb89712_sram_map.virt = ioremap(SRAM_START, SRAM_SIZE);
+ if (!cdb89712_sram_map.virt) {
+ printk(KERN_NOTICE "Failed to ioremap Cdb89712 SRAM space\n");
+ err = -EIO;
+ goto out_resource;
+ }
+ simple_map_init(&cdb89712_sram_map);
+ sram_mtd = do_map_probe("map_ram", &cdb89712_sram_map);
+ if (!sram_mtd) {
+ printk("SRAM probe failed\n");
+ err = -ENXIO;
+ goto out_ioremap;
+ }
+
+ sram_mtd->owner = THIS_MODULE;
+ sram_mtd->erasesize = 16;
+
+ if (add_mtd_device(sram_mtd)) {
+ printk("SRAM device addition failed\n");
+ err = -ENOMEM;
+ goto out_probe;
+ }
+
+ return 0;
+
+out_probe:
+ map_destroy(sram_mtd);
+ sram_mtd = 0;
+out_ioremap:
+ iounmap((void *)cdb89712_sram_map.virt);
+out_resource:
+ release_resource (&cdb89712_sram_resource);
+out:
+ return err;
+}
+
+
+
+
+
+
+
+static struct mtd_info *bootrom_mtd;
+
+struct map_info cdb89712_bootrom_map = {
+ .name = "BootROM",
+ .size = BOOTROM_SIZE,
+ .bankwidth = BOOTROM_WIDTH,
+ .phys = BOOTROM_START,
+};
+
+struct resource cdb89712_bootrom_resource = {
+ .name = "BootROM",
+ .start = BOOTROM_START,
+ .end = BOOTROM_START + BOOTROM_SIZE - 1,
+ .flags = IORESOURCE_IO | IORESOURCE_BUSY,
+};
+
+static int __init init_cdb89712_bootrom (void)
+{
+ int err;
+
+ if (request_resource (&ioport_resource, &cdb89712_bootrom_resource)) {
+ printk(KERN_NOTICE "Failed to reserve Cdb89712 BOOTROM space\n");
+ err = -EBUSY;
+ goto out;
+ }
+
+ cdb89712_bootrom_map.virt = ioremap(BOOTROM_START, BOOTROM_SIZE);
+ if (!cdb89712_bootrom_map.virt) {
+ printk(KERN_NOTICE "Failed to ioremap Cdb89712 BootROM space\n");
+ err = -EIO;
+ goto out_resource;
+ }
+ simple_map_init(&cdb89712_bootrom_map);
+ bootrom_mtd = do_map_probe("map_rom", &cdb89712_bootrom_map);
+ if (!bootrom_mtd) {
+ printk("BootROM probe failed\n");
+ err = -ENXIO;
+ goto out_ioremap;
+ }
+
+ bootrom_mtd->owner = THIS_MODULE;
+ bootrom_mtd->erasesize = 0x10000;
+
+ if (add_mtd_device(bootrom_mtd)) {
+ printk("BootROM device addition failed\n");
+ err = -ENOMEM;
+ goto out_probe;
+ }
+
+ return 0;
+
+out_probe:
+ map_destroy(bootrom_mtd);
+ bootrom_mtd = 0;
+out_ioremap:
+ iounmap((void *)cdb89712_bootrom_map.virt);
+out_resource:
+ release_resource (&cdb89712_bootrom_resource);
+out:
+ return err;
+}
+
+
+
+
+
+static int __init init_cdb89712_maps(void)
+{
+
+ printk(KERN_INFO "Cirrus CDB89712 MTD mappings:\n Flash 0x%x at 0x%x\n SRAM 0x%x at 0x%x\n BootROM 0x%x at 0x%x\n",
+ FLASH_SIZE, FLASH_START, SRAM_SIZE, SRAM_START, BOOTROM_SIZE, BOOTROM_START);
+
+ init_cdb89712_flash();
+ init_cdb89712_sram();
+ init_cdb89712_bootrom();
+
+ return 0;
+}
+
+
+static void __exit cleanup_cdb89712_maps(void)
+{
+ if (sram_mtd) {
+ del_mtd_device(sram_mtd);
+ map_destroy(sram_mtd);
+ iounmap((void *)cdb89712_sram_map.virt);
+ release_resource (&cdb89712_sram_resource);
+ }
+
+ if (flash_mtd) {
+ del_mtd_device(flash_mtd);
+ map_destroy(flash_mtd);
+ iounmap((void *)cdb89712_flash_map.virt);
+ release_resource (&cdb89712_flash_resource);
+ }
+
+ if (bootrom_mtd) {
+ del_mtd_device(bootrom_mtd);
+ map_destroy(bootrom_mtd);
+ iounmap((void *)cdb89712_bootrom_map.virt);
+ release_resource (&cdb89712_bootrom_resource);
+ }
+}
+
+module_init(init_cdb89712_maps);
+module_exit(cleanup_cdb89712_maps);
+
+MODULE_AUTHOR("Ray L");
+MODULE_DESCRIPTION("ARM CDB89712 map driver");
+MODULE_LICENSE("GPL");
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