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1/*
2 * Flash and EPROM on Hitachi Solution Engine and similar boards.
3 *
4 * (C) 2001 Red Hat, Inc.
5 *
6 * GPL'd
7 */
8
9#include <linux/module.h>
10#include <linux/types.h>
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <asm/io.h>
14#include <linux/mtd/mtd.h>
15#include <linux/mtd/map.h>
16#include <linux/mtd/partitions.h>
17#include <linux/errno.h>
18
19static struct mtd_info *flash_mtd;
20static struct mtd_info *eprom_mtd;
21
22struct map_info soleng_eprom_map = {
23 .name = "Solution Engine EPROM",
24 .size = 0x400000,
25 .bankwidth = 4,
26};
27
28struct map_info soleng_flash_map = {
29 .name = "Solution Engine FLASH",
30 .size = 0x400000,
31 .bankwidth = 4,
32};
33
34static const char * const probes[] = { "RedBoot", "cmdlinepart", NULL };
35
36static int __init init_soleng_maps(void)
37{
38 /* First probe at offset 0 */
39 soleng_flash_map.phys = 0;
40 soleng_flash_map.virt = (void __iomem *)P2SEGADDR(0);
41 soleng_eprom_map.phys = 0x01000000;
42 soleng_eprom_map.virt = (void __iomem *)P1SEGADDR(0x01000000);
43 simple_map_init(&soleng_eprom_map);
44 simple_map_init(&soleng_flash_map);
45
46 printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n");
47 flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);
48 if (!flash_mtd) {
49 /* Not there. Try swapping */
50 printk(KERN_NOTICE "Probing for flash chips at 0x01000000:\n");
51 soleng_flash_map.phys = 0x01000000;
52 soleng_flash_map.virt = P2SEGADDR(0x01000000);
53 soleng_eprom_map.phys = 0;
54 soleng_eprom_map.virt = P1SEGADDR(0);
55 flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);
56 if (!flash_mtd) {
57 /* Eep. */
58 printk(KERN_NOTICE "Flash chips not detected at either possible location.\n");
59 return -ENXIO;
60 }
61 }
62 printk(KERN_NOTICE "Solution Engine: Flash at 0x%08lx, EPROM at 0x%08lx\n",
63 soleng_flash_map.phys & 0x1fffffff,
64 soleng_eprom_map.phys & 0x1fffffff);
65 flash_mtd->owner = THIS_MODULE;
66
67 eprom_mtd = do_map_probe("map_rom", &soleng_eprom_map);
68 if (eprom_mtd) {
69 eprom_mtd->owner = THIS_MODULE;
70 mtd_device_register(eprom_mtd, NULL, 0);
71 }
72
73 mtd_device_parse_register(flash_mtd, probes, NULL, NULL, 0);
74
75 return 0;
76}
77
78static void __exit cleanup_soleng_maps(void)
79{
80 if (eprom_mtd) {
81 mtd_device_unregister(eprom_mtd);
82 map_destroy(eprom_mtd);
83 }
84
85 mtd_device_unregister(flash_mtd);
86 map_destroy(flash_mtd);
87}
88
89module_init(init_soleng_maps);
90module_exit(cleanup_soleng_maps);
91
92MODULE_LICENSE("GPL");
93MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
94MODULE_DESCRIPTION("MTD map driver for Hitachi SolutionEngine (and similar) boards");
95
1/*
2 * Flash and EPROM on Hitachi Solution Engine and similar boards.
3 *
4 * (C) 2001 Red Hat, Inc.
5 *
6 * GPL'd
7 */
8
9#include <linux/module.h>
10#include <linux/types.h>
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <asm/io.h>
14#include <linux/mtd/mtd.h>
15#include <linux/mtd/map.h>
16#include <linux/mtd/partitions.h>
17#include <linux/errno.h>
18
19static struct mtd_info *flash_mtd;
20static struct mtd_info *eprom_mtd;
21
22struct map_info soleng_eprom_map = {
23 .name = "Solution Engine EPROM",
24 .size = 0x400000,
25 .bankwidth = 4,
26};
27
28struct map_info soleng_flash_map = {
29 .name = "Solution Engine FLASH",
30 .size = 0x400000,
31 .bankwidth = 4,
32};
33
34static const char * const probes[] = { "RedBoot", "cmdlinepart", NULL };
35
36#ifdef CONFIG_MTD_SUPERH_RESERVE
37static struct mtd_partition superh_se_partitions[] = {
38 /* Reserved for boot code, read-only */
39 {
40 .name = "flash_boot",
41 .offset = 0x00000000,
42 .size = CONFIG_MTD_SUPERH_RESERVE,
43 .mask_flags = MTD_WRITEABLE,
44 },
45 /* All else is writable (e.g. JFFS) */
46 {
47 .name = "Flash FS",
48 .offset = MTDPART_OFS_NXTBLK,
49 .size = MTDPART_SIZ_FULL,
50 }
51};
52#define NUM_PARTITIONS ARRAY_SIZE(superh_se_partitions)
53#else
54#define superh_se_partitions NULL
55#define NUM_PARTITIONS 0
56#endif /* CONFIG_MTD_SUPERH_RESERVE */
57
58static int __init init_soleng_maps(void)
59{
60 /* First probe at offset 0 */
61 soleng_flash_map.phys = 0;
62 soleng_flash_map.virt = (void __iomem *)P2SEGADDR(0);
63 soleng_eprom_map.phys = 0x01000000;
64 soleng_eprom_map.virt = (void __iomem *)P1SEGADDR(0x01000000);
65 simple_map_init(&soleng_eprom_map);
66 simple_map_init(&soleng_flash_map);
67
68 printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n");
69 flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);
70 if (!flash_mtd) {
71 /* Not there. Try swapping */
72 printk(KERN_NOTICE "Probing for flash chips at 0x01000000:\n");
73 soleng_flash_map.phys = 0x01000000;
74 soleng_flash_map.virt = P2SEGADDR(0x01000000);
75 soleng_eprom_map.phys = 0;
76 soleng_eprom_map.virt = P1SEGADDR(0);
77 flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);
78 if (!flash_mtd) {
79 /* Eep. */
80 printk(KERN_NOTICE "Flash chips not detected at either possible location.\n");
81 return -ENXIO;
82 }
83 }
84 printk(KERN_NOTICE "Solution Engine: Flash at 0x%08lx, EPROM at 0x%08lx\n",
85 soleng_flash_map.phys & 0x1fffffff,
86 soleng_eprom_map.phys & 0x1fffffff);
87 flash_mtd->owner = THIS_MODULE;
88
89 eprom_mtd = do_map_probe("map_rom", &soleng_eprom_map);
90 if (eprom_mtd) {
91 eprom_mtd->owner = THIS_MODULE;
92 mtd_device_register(eprom_mtd, NULL, 0);
93 }
94
95 mtd_device_parse_register(flash_mtd, probes, NULL,
96 superh_se_partitions, NUM_PARTITIONS);
97
98 return 0;
99}
100
101static void __exit cleanup_soleng_maps(void)
102{
103 if (eprom_mtd) {
104 mtd_device_unregister(eprom_mtd);
105 map_destroy(eprom_mtd);
106 }
107
108 mtd_device_unregister(flash_mtd);
109 map_destroy(flash_mtd);
110}
111
112module_init(init_soleng_maps);
113module_exit(cleanup_soleng_maps);
114
115MODULE_LICENSE("GPL");
116MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
117MODULE_DESCRIPTION("MTD map driver for Hitachi SolutionEngine (and similar) boards");
118