+/*
+ * Flash memory access on RDC R8610 Evaluation board
+ *
+ * (C) 2009, Florian Fainelli
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+
+static struct map_info r8610_map = {
+ .name = "r8610",
+ .size = CONFIG_MTD_RDC3210_SIZE,
+ .bankwidth = CONFIG_MTD_RDC3210_BUSWIDTH,
+};
+
+static struct mtd_partition r8610_partitions[] = {
+ {
+ .name = "Kernel",
+ .size = 0x001f0000,
+ .offset = 0
+ },{
+ .name = "Config",
+ .size = 0x10000,
+ .offset = MTDPART_OFS_APPEND,
+ },{
+ .name = "Initrd",
+ .size = 0x1E0000,
+ .offset = MTDPART_OFS_APPEND,
+ },{
+ .name = "Redboot",
+ .size = 0x20000,
+ .offset = MTDPART_OFS_APPEND,
+ .mask_flags = MTD_WRITEABLE
+ }
+};
+
+static struct mtd_info *mymtd;
+
+int __init r8610_mtd_init(void)
+{
+ struct mtd_partition *parts;
+ int nb_parts = 0;
+
+ /*
+ * Static partition definition selection
+ */
+ parts = r8610_partitions;
+ nb_parts = ARRAY_SIZE(r8610_partitions);
+
+ /*
+ * Now let's probe for the actual flash. Do it here since
+ * specific machine settings might have been set above.
+ */
+ r8610_map.phys = -r8610_map.size;
+ printk(KERN_NOTICE "r8610: flash device: %lx at %x\n", r8610_map.size, r8610_map.phys);
+
+ r8610_map.map_priv_1 = (unsigned long)(r8610_map.virt = ioremap_nocache(r8610_map.phys, r8610_map.size));
+ if (!r8610_map.map_priv_1) {
+ printk(KERN_ERR "Failed to ioremap\n");
+ return -EIO;
+ }
+
+ mymtd = do_map_probe("cfi_probe", &r8610_map);
+ if (!mymtd) {
+ iounmap(r8610_map.virt);
+ return -ENXIO;
+ }
+ mymtd->owner = THIS_MODULE;
+
+ add_mtd_partitions(mymtd, parts, nb_parts);
+
+ return 0;
+}
+
+static void __exit r8610_mtd_cleanup(void)
+{
+ if (mymtd) {
+ del_mtd_partitions(mymtd);
+ map_destroy(mymtd);
+ iounmap(r8610_map.virt);
+ }
+}
+
+module_init(r8610_mtd_init);
+module_exit(r8610_mtd_cleanup);
+
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_DESCRIPTION("RDC R8610 MTD driver");
+MODULE_LICENSE("GPL");
projects / openwrt / openwrt.git / commitdiff