Commit | Line | Data |
---|---|---|
daeb51e6 DH |
1 | /* Handle mapping of the flash on the ASB2303 board |
2 | * | |
3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public Licence | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the Licence, or (at your option) any later version. | |
10 | */ | |
11 | #include <linux/init.h> | |
12 | #include <linux/platform_device.h> | |
13 | #include <linux/mtd/partitions.h> | |
14 | #include <linux/mtd/physmap.h> | |
15 | ||
16 | #define ASB2303_PROM_ADDR 0xA0000000 /* Boot PROM */ | |
17 | #define ASB2303_PROM_SIZE (2 * 1024 * 1024) | |
18 | #define ASB2303_FLASH_ADDR 0xA4000000 /* System Flash */ | |
19 | #define ASB2303_FLASH_SIZE (32 * 1024 * 1024) | |
20 | #define ASB2303_CONFIG_ADDR 0xA6000000 /* System Config EEPROM */ | |
21 | #define ASB2303_CONFIG_SIZE (8 * 1024) | |
22 | ||
23 | /* | |
24 | * default MTD partition table for both main flash devices, expected to be | |
25 | * overridden by RedBoot | |
26 | */ | |
27 | static struct mtd_partition asb2303_partitions[] = { | |
28 | { | |
29 | .name = "Bootloader", | |
30 | .size = 0x00040000, | |
31 | .offset = 0, | |
32 | .mask_flags = MTD_CAP_ROM /* force read-only */ | |
33 | }, { | |
34 | .name = "Kernel", | |
35 | .size = 0x00400000, | |
36 | .offset = 0x00040000, | |
37 | }, { | |
38 | .name = "Filesystem", | |
39 | .size = MTDPART_SIZ_FULL, | |
40 | .offset = 0x00440000 | |
41 | } | |
42 | }; | |
43 | ||
44 | /* | |
45 | * the ASB2303 Boot PROM definition | |
46 | */ | |
47 | static struct physmap_flash_data asb2303_bootprom_data = { | |
48 | .width = 2, | |
49 | .nr_parts = 1, | |
50 | .parts = asb2303_partitions, | |
51 | }; | |
52 | ||
53 | static struct resource asb2303_bootprom_resource = { | |
54 | .start = ASB2303_PROM_ADDR, | |
55 | .end = ASB2303_PROM_ADDR + ASB2303_PROM_SIZE, | |
56 | .flags = IORESOURCE_MEM, | |
57 | }; | |
58 | ||
59 | static struct platform_device asb2303_bootprom = { | |
60 | .name = "physmap-flash", | |
61 | .id = 0, | |
62 | .dev.platform_data = &asb2303_bootprom_data, | |
63 | .num_resources = 1, | |
64 | .resource = &asb2303_bootprom_resource, | |
65 | }; | |
66 | ||
67 | /* | |
68 | * the ASB2303 System Flash definition | |
69 | */ | |
70 | static struct physmap_flash_data asb2303_sysflash_data = { | |
71 | .width = 4, | |
72 | .nr_parts = 1, | |
73 | .parts = asb2303_partitions, | |
74 | }; | |
75 | ||
76 | static struct resource asb2303_sysflash_resource = { | |
77 | .start = ASB2303_FLASH_ADDR, | |
78 | .end = ASB2303_FLASH_ADDR + ASB2303_FLASH_SIZE, | |
79 | .flags = IORESOURCE_MEM, | |
80 | }; | |
81 | ||
82 | static struct platform_device asb2303_sysflash = { | |
83 | .name = "physmap-flash", | |
84 | .id = 1, | |
85 | .dev.platform_data = &asb2303_sysflash_data, | |
86 | .num_resources = 1, | |
87 | .resource = &asb2303_sysflash_resource, | |
88 | }; | |
89 | ||
90 | /* | |
91 | * register the ASB2303 flashes | |
92 | */ | |
93 | static int __init asb2303_mtd_init(void) | |
94 | { | |
95 | platform_device_register(&asb2303_bootprom); | |
96 | platform_device_register(&asb2303_sysflash); | |
97 | return 0; | |
98 | } | |
99 | ||
100 | module_init(asb2303_mtd_init); |