1 files changed, 163 insertions, 0 deletions

diff --git a/drivers/mtd/maps/ebony.c b/drivers/mtd/maps/ebony.c
new file mode 100644
index 000000000000..b9d9cf4854b6
--- /dev/null
+++ b/drivers/mtd/maps/ebony.c
@@ -0,0 +1,163 @@
+/*
+ * $Id: ebony.c,v 1.15 2004/12/09 18:39:54 holindho Exp $
+ * 
+ * Mapping for Ebony user flash
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * Copyright 2002-2004 MontaVista Software Inc.
+ *
+ * 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/ibm44x.h>
+#include <platforms/4xx/ebony.h>
+
+static struct mtd_info *flash;
+
+static struct map_info ebony_small_map = {
+        .name =         "Ebony small flash",
+        .size =         EBONY_SMALL_FLASH_SIZE,
+        .bankwidth =    1,
+};
+
+static struct map_info ebony_large_map = {
+        .name =         "Ebony large flash",
+        .size =         EBONY_LARGE_FLASH_SIZE,
+        .bankwidth =    1,
+};
+
+static struct mtd_partition ebony_small_partitions[] = {
+        {
+                .name =   "OpenBIOS",
+                .offset = 0x0,
+                .size =   0x80000,
+        }
+};
+
+static struct mtd_partition ebony_large_partitions[] = {
+        {
+                .name =   "fs",
+                .offset = 0,
+                .size =   0x380000,
+        },
+        {
+                .name =   "firmware",
+                .offset = 0x380000,
+                .size =   0x80000,
+        }
+};
+
+int __init init_ebony(void)
+{
+        u8 fpga0_reg;
+        u8 __iomem *fpga0_adr;
+        unsigned long long small_flash_base, large_flash_base;
+
+        fpga0_adr = ioremap64(EBONY_FPGA_ADDR, 16);
+        if (!fpga0_adr)
+                return -ENOMEM;
+
+        fpga0_reg = readb(fpga0_adr);
+        iounmap(fpga0_adr);
+
+        if (EBONY_BOOT_SMALL_FLASH(fpga0_reg) &&
+                        !EBONY_FLASH_SEL(fpga0_reg))
+                small_flash_base = EBONY_SMALL_FLASH_HIGH2;
+        else if (EBONY_BOOT_SMALL_FLASH(fpga0_reg) &&
+                        EBONY_FLASH_SEL(fpga0_reg))
+                small_flash_base = EBONY_SMALL_FLASH_HIGH1;
+        else if (!EBONY_BOOT_SMALL_FLASH(fpga0_reg) &&
+                        !EBONY_FLASH_SEL(fpga0_reg))
+                small_flash_base = EBONY_SMALL_FLASH_LOW2;
+        else
+                small_flash_base = EBONY_SMALL_FLASH_LOW1;
+                        
+        if (EBONY_BOOT_SMALL_FLASH(fpga0_reg) &&
+                        !EBONY_ONBRD_FLASH_EN(fpga0_reg))
+                large_flash_base = EBONY_LARGE_FLASH_LOW;
+        else
+                large_flash_base = EBONY_LARGE_FLASH_HIGH;
+
+        ebony_small_map.phys = small_flash_base;
+        ebony_small_map.virt = ioremap64(small_flash_base,
+                                         ebony_small_map.size);
+
+        if (!ebony_small_map.virt) {
+                printk("Failed to ioremap flash\n");
+                return -EIO;
+        }
+
+        simple_map_init(&ebony_small_map);
+
+        flash = do_map_probe("jedec_probe", &ebony_small_map);
+        if (flash) {
+                flash->owner = THIS_MODULE;
+                add_mtd_partitions(flash, ebony_small_partitions,
+                                        ARRAY_SIZE(ebony_small_partitions));
+        } else {
+                printk("map probe failed for flash\n");
+                return -ENXIO;
+        }
+
+        ebony_large_map.phys = large_flash_base;
+        ebony_large_map.virt = ioremap64(large_flash_base,
+                                         ebony_large_map.size);
+
+        if (!ebony_large_map.virt) {
+                printk("Failed to ioremap flash\n");
+                return -EIO;
+        }
+
+        simple_map_init(&ebony_large_map);
+
+        flash = do_map_probe("jedec_probe", &ebony_large_map);
+        if (flash) {
+                flash->owner = THIS_MODULE;
+                add_mtd_partitions(flash, ebony_large_partitions,
+                                        ARRAY_SIZE(ebony_large_partitions));
+        } else {
+                printk("map probe failed for flash\n");
+                return -ENXIO;
+        }
+
+        return 0;
+}
+
+static void __exit cleanup_ebony(void)
+{
+        if (flash) {
+                del_mtd_partitions(flash);
+                map_destroy(flash);
+        }
+
+        if (ebony_small_map.virt) {
+                iounmap(ebony_small_map.virt);
+                ebony_small_map.virt = NULL;
+        }
+
+        if (ebony_large_map.virt) {
+                iounmap(ebony_large_map.virt);
+                ebony_large_map.virt = NULL;
+        }
+}
+
+module_init(init_ebony);
+module_exit(cleanup_ebony);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Matt Porter <mporter@kernel.crashing.org>");
+MODULE_DESCRIPTION("MTD map and partitions for IBM 440GP Ebony boards");