1 files changed, 137 insertions, 0 deletions

diff --git a/drivers/mtd/maps/solutionengine.c b/drivers/mtd/maps/solutionengine.c
new file mode 100644
index 000000000000..8ce5d897645c
--- /dev/null
+++ b/drivers/mtd/maps/solutionengine.c
@@ -0,0 +1,137 @@
+/*
+ * $Id: solutionengine.c,v 1.14 2004/09/16 23:27:14 gleixner Exp $
+ *
+ * Flash and EPROM on Hitachi Solution Engine and similar boards.
+ *
+ * (C) 2001 Red Hat, Inc.
+ *
+ * GPL'd
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/config.h>
+#include <linux/errno.h>
+
+static struct mtd_info *flash_mtd;
+static struct mtd_info *eprom_mtd;
+
+static struct mtd_partition *parsed_parts;
+
+struct map_info soleng_eprom_map = {
+        .name = "Solution Engine EPROM",
+        .size = 0x400000,
+        .bankwidth = 4,
+};
+
+struct map_info soleng_flash_map = {
+        .name = "Solution Engine FLASH",
+        .size = 0x400000,
+        .bankwidth = 4,
+};
+
+static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
+
+#ifdef CONFIG_MTD_SUPERH_RESERVE
+static struct mtd_partition superh_se_partitions[] = {
+        /* Reserved for boot code, read-only */
+        {
+                .name = "flash_boot",
+                .offset = 0x00000000,
+                .size = CONFIG_MTD_SUPERH_RESERVE,
+                .mask_flags = MTD_WRITEABLE,
+        },
+        /* All else is writable (e.g. JFFS) */
+        {
+                .name = "Flash FS",
+                .offset = MTDPART_OFS_NXTBLK,
+                .size = MTDPART_SIZ_FULL,
+        }
+};
+#endif /* CONFIG_MTD_SUPERH_RESERVE */
+
+static int __init init_soleng_maps(void)
+{
+        int nr_parts = 0;
+
+        /* First probe at offset 0 */
+        soleng_flash_map.phys = 0;
+        soleng_flash_map.virt = (void __iomem *)P2SEGADDR(0);
+        soleng_eprom_map.phys = 0x01000000;
+        soleng_eprom_map.virt = (void __iomem *)P1SEGADDR(0x01000000);
+        simple_map_init(&soleng_eprom_map);
+        simple_map_init(&soleng_flash_map);
+        
+        printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n");
+        flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);
+        if (!flash_mtd) {
+                /* Not there. Try swapping */
+                printk(KERN_NOTICE "Probing for flash chips at 0x01000000:\n");
+                soleng_flash_map.phys = 0x01000000;
+                soleng_flash_map.virt = P2SEGADDR(0x01000000);
+                soleng_eprom_map.phys = 0;
+                soleng_eprom_map.virt = P1SEGADDR(0);
+                flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);
+                if (!flash_mtd) {
+                        /* Eep. */
+                        printk(KERN_NOTICE "Flash chips not detected at either possible location.\n");
+                        return -ENXIO;
+                }
+        }
+        printk(KERN_NOTICE "Solution Engine: Flash at 0x%08lx, EPROM at 0x%08lx\n",
+               soleng_flash_map.phys & 0x1fffffff,
+               soleng_eprom_map.phys & 0x1fffffff);
+        flash_mtd->owner = THIS_MODULE;
+
+        eprom_mtd = do_map_probe("map_rom", &soleng_eprom_map);
+        if (eprom_mtd) {
+                eprom_mtd->owner = THIS_MODULE;
+                add_mtd_device(eprom_mtd);
+        }
+
+        nr_parts = parse_mtd_partitions(flash_mtd, probes, &parsed_parts, 0);
+
+#ifdef CONFIG_MTD_SUPERH_RESERVE
+        if (nr_parts <= 0) {
+                printk(KERN_NOTICE "Using configured partition at 0x%08x.\n",
+                       CONFIG_MTD_SUPERH_RESERVE);
+                parsed_parts = superh_se_partitions;
+                nr_parts = sizeof(superh_se_partitions)/sizeof(*parsed_parts);
+        }
+#endif /* CONFIG_MTD_SUPERH_RESERVE */
+
+        if (nr_parts > 0)
+                add_mtd_partitions(flash_mtd, parsed_parts, nr_parts);
+        else
+                add_mtd_device(flash_mtd);
+
+        return 0;
+}
+
+static void __exit cleanup_soleng_maps(void)
+{
+        if (eprom_mtd) {
+                del_mtd_device(eprom_mtd);
+                map_destroy(eprom_mtd);
+        }
+
+        if (parsed_parts)
+                del_mtd_partitions(flash_mtd);
+        else
+                del_mtd_device(flash_mtd);
+        map_destroy(flash_mtd);
+}
+
+module_init(init_soleng_maps);
+module_exit(cleanup_soleng_maps);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("MTD map driver for Hitachi SolutionEngine (and similar) boards");
+