2 * $Id: ebony.c,v 1.10 2004/07/12 21:59:44 dwmw2 Exp $
4 * Mapping for Ebony user flash
6 * Matt Porter <mporter@mvista.com>
8 * Copyright 2002 MontaVista Software Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
16 #include <linux/module.h>
17 #include <linux/types.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/mtd/mtd.h>
21 #include <linux/mtd/map.h>
22 #include <linux/mtd/partitions.h>
23 #include <linux/config.h>
25 #include <asm/ibm44x.h>
26 #include <platforms/ebony.h>
28 static struct mtd_info
*flash
;
30 static struct map_info ebony_small_map
= {
31 .name
= "Ebony small flash",
32 .size
= EBONY_SMALL_FLASH_SIZE
,
36 static struct map_info ebony_large_map
= {
37 .name
= "Ebony large flash",
38 .size
= EBONY_LARGE_FLASH_SIZE
,
42 static struct mtd_partition ebony_small_partitions
[] = {
50 static struct mtd_partition ebony_large_partitions
[] = {
63 int __init
init_ebony(void)
66 unsigned long fpga0_adr
;
67 unsigned long long small_flash_base
, large_flash_base
;
69 fpga0_adr
= ioremap64(EBONY_FPGA_ADDR
, 16);
73 fpga0_reg
= readb(fpga0_adr
);
76 if (EBONY_BOOT_SMALL_FLASH(fpga0_reg
) &&
77 !EBONY_FLASH_SEL(fpga0_reg
))
78 small_flash_base
= EBONY_SMALL_FLASH_HIGH2
;
79 else if (EBONY_BOOT_SMALL_FLASH(fpga0_reg
) &&
80 EBONY_FLASH_SEL(fpga0_reg
))
81 small_flash_base
= EBONY_SMALL_FLASH_HIGH1
;
82 else if (!EBONY_BOOT_SMALL_FLASH(fpga0_reg
) &&
83 !EBONY_FLASH_SEL(fpga0_reg
))
84 small_flash_base
= EBONY_SMALL_FLASH_LOW2
;
86 small_flash_base
= EBONY_SMALL_FLASH_LOW1
;
88 if (EBONY_BOOT_SMALL_FLASH(fpga0_reg
) &&
89 !EBONY_ONBRD_FLASH_EN(fpga0_reg
))
90 large_flash_base
= EBONY_LARGE_FLASH_LOW
;
92 large_flash_base
= EBONY_LARGE_FLASH_HIGH
;
94 ebony_small_map
.phys
= small_flash_base
;
95 ebony_small_map
.virt
=
96 (unsigned long)ioremap64(small_flash_base
,
97 ebony_small_map
.size
);
99 if (!ebony_small_map
.virt
) {
100 printk("Failed to ioremap flash\n");
104 simple_map_init(&ebony_small_map
);
106 flash
= do_map_probe("map_rom", &ebony_small_map
);
108 flash
->owner
= THIS_MODULE
;
109 add_mtd_partitions(flash
, ebony_small_partitions
,
110 ARRAY_SIZE(ebony_small_partitions
));
112 printk("map probe failed for flash\n");
116 ebony_large_map
.phys
= large_flash_base
;
117 ebony_large_map
.virt
=
118 (unsigned long)ioremap64(large_flash_base
,
119 ebony_large_map
.size
);
121 if (!ebony_large_map
.virt
) {
122 printk("Failed to ioremap flash\n");
126 simple_map_init(&ebony_large_map
);
128 flash
= do_map_probe("cfi_probe", &ebony_large_map
);
130 flash
->owner
= THIS_MODULE
;
131 add_mtd_partitions(flash
, ebony_large_partitions
,
132 ARRAY_SIZE(ebony_large_partitions
));
134 printk("map probe failed for flash\n");
141 static void __exit
cleanup_ebony(void)
144 del_mtd_partitions(flash
);
148 if (ebony_small_map
.virt
) {
149 iounmap((void *)ebony_small_map
.virt
);
150 ebony_small_map
.virt
= 0;
153 if (ebony_large_map
.virt
) {
154 iounmap((void *)ebony_large_map
.virt
);
155 ebony_large_map
.virt
= 0;
159 module_init(init_ebony
);
160 module_exit(cleanup_ebony
);
162 MODULE_LICENSE("GPL");
163 MODULE_AUTHOR("Matt Porter <mporter@mvista.com>");
164 MODULE_DESCRIPTION("MTD map and partitions for IBM 440GP Ebony boards");