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