^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Flash and EPROM on Hitachi Solution Engine and similar boards.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * (C) 2001 Red Hat, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * GPL'd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mtd/mtd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mtd/map.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mtd/partitions.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static struct mtd_info *flash_mtd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static struct mtd_info *eprom_mtd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct map_info soleng_eprom_map = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) .name = "Solution Engine EPROM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) .size = 0x400000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) .bankwidth = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct map_info soleng_flash_map = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) .name = "Solution Engine FLASH",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) .size = 0x400000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .bankwidth = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static const char * const probes[] = { "RedBoot", "cmdlinepart", NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static int __init init_soleng_maps(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /* First probe at offset 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) soleng_flash_map.phys = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) soleng_flash_map.virt = (void __iomem *)P2SEGADDR(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) soleng_eprom_map.phys = 0x01000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) soleng_eprom_map.virt = (void __iomem *)P1SEGADDR(0x01000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) simple_map_init(&soleng_eprom_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) simple_map_init(&soleng_flash_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (!flash_mtd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* Not there. Try swapping */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) printk(KERN_NOTICE "Probing for flash chips at 0x01000000:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) soleng_flash_map.phys = 0x01000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) soleng_flash_map.virt = P2SEGADDR(0x01000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) soleng_eprom_map.phys = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) soleng_eprom_map.virt = P1SEGADDR(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (!flash_mtd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* Eep. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) printk(KERN_NOTICE "Flash chips not detected at either possible location.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) printk(KERN_NOTICE "Solution Engine: Flash at 0x%pap, EPROM at 0x%pap\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) &soleng_flash_map.phys,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) &soleng_eprom_map.phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) flash_mtd->owner = THIS_MODULE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) eprom_mtd = do_map_probe("map_rom", &soleng_eprom_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (eprom_mtd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) eprom_mtd->owner = THIS_MODULE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) mtd_device_register(eprom_mtd, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) mtd_device_parse_register(flash_mtd, probes, NULL, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static void __exit cleanup_soleng_maps(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (eprom_mtd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) mtd_device_unregister(eprom_mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) map_destroy(eprom_mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) mtd_device_unregister(flash_mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) map_destroy(flash_mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) module_init(init_soleng_maps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) module_exit(cleanup_soleng_maps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) MODULE_DESCRIPTION("MTD map driver for Hitachi SolutionEngine (and similar) boards");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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