mirror of https://gitee.com/openkylin/linux.git
65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
/*
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* Handle mapping of the flash on the RPX Lite and CLLF boards
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*/
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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/init.h>
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#include <asm/io.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/map.h>
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#define WINDOW_ADDR 0xfe000000
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#define WINDOW_SIZE 0x800000
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static struct mtd_info *mymtd;
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static struct map_info rpxlite_map = {
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.name = "RPX",
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.size = WINDOW_SIZE,
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.bankwidth = 4,
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.phys = WINDOW_ADDR,
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};
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static int __init init_rpxlite(void)
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{
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printk(KERN_NOTICE "RPX Lite or CLLF flash device: %x at %x\n", WINDOW_SIZE*4, WINDOW_ADDR);
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rpxlite_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
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if (!rpxlite_map.virt) {
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printk("Failed to ioremap\n");
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return -EIO;
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}
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simple_map_init(&rpxlite_map);
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mymtd = do_map_probe("cfi_probe", &rpxlite_map);
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if (mymtd) {
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mymtd->owner = THIS_MODULE;
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mtd_device_register(mymtd, NULL, 0);
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return 0;
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}
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iounmap((void *)rpxlite_map.virt);
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return -ENXIO;
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}
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static void __exit cleanup_rpxlite(void)
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{
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if (mymtd) {
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mtd_device_unregister(mymtd);
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map_destroy(mymtd);
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}
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if (rpxlite_map.virt) {
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iounmap((void *)rpxlite_map.virt);
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rpxlite_map.virt = 0;
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}
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}
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module_init(init_rpxlite);
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module_exit(cleanup_rpxlite);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Arnold Christensen <AKC@pel.dk>");
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MODULE_DESCRIPTION("MTD map driver for RPX Lite and CLLF boards");
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