1 // SPDX-License-Identifier: GPL-2.0
2 /***************************************************************************/
3
4 /*
5 * firebee.c -- extra startup code support for the FireBee boards
6 *
7 * Copyright (C) 2011, Greg Ungerer (gerg@snapgear.com)
8 */
9
10 /***************************************************************************/
11
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/io.h>
15 #include <linux/platform_device.h>
16 #include <linux/mtd/mtd.h>
17 #include <linux/mtd/partitions.h>
18 #include <linux/mtd/physmap.h>
19 #include <asm/coldfire.h>
20 #include <asm/mcfsim.h>
21
22 /***************************************************************************/
23
24 /*
25 * 8MB of NOR flash fitted to the FireBee board.
26 */
27 #define FLASH_PHYS_ADDR 0xe0000000 /* Physical address of flash */
28 #define FLASH_PHYS_SIZE 0x00800000 /* Size of flash */
29
30 #define PART_BOOT_START 0x00000000 /* Start at bottom of flash */
31 #define PART_BOOT_SIZE 0x00040000 /* 256k in size */
32 #define PART_IMAGE_START 0x00040000 /* Start after boot loader */
33 #define PART_IMAGE_SIZE 0x006c0000 /* Most of flash */
34 #define PART_FPGA_START 0x00700000 /* Start at offset 7MB */
35 #define PART_FPGA_SIZE 0x00100000 /* 1MB in size */
36
37 static struct mtd_partition firebee_flash_parts[] = {
38 {
39 .name = "dBUG",
40 .offset = PART_BOOT_START,
41 .size = PART_BOOT_SIZE,
42 },
43 {
44 .name = "FPGA",
45 .offset = PART_FPGA_START,
46 .size = PART_FPGA_SIZE,
47 },
48 {
49 .name = "image",
50 .offset = PART_IMAGE_START,
51 .size = PART_IMAGE_SIZE,
52 },
53 };
54
55 static struct physmap_flash_data firebee_flash_data = {
56 .width = 2,
57 .nr_parts = ARRAY_SIZE(firebee_flash_parts),
58 .parts = firebee_flash_parts,
59 };
60
61 static struct resource firebee_flash_resource = {
62 .start = FLASH_PHYS_ADDR,
63 .end = FLASH_PHYS_ADDR + FLASH_PHYS_SIZE,
64 .flags = IORESOURCE_MEM,
65 };
66
67 static struct platform_device firebee_flash = {
68 .name = "physmap-flash",
69 .id = 0,
70 .dev = {
71 .platform_data = &firebee_flash_data,
72 },
73 .num_resources = 1,
74 .resource = &firebee_flash_resource,
75 };
76
77 /***************************************************************************/
78
79 static int __init init_firebee(void)
80 {
81 platform_device_register(&firebee_flash);
82 return 0;
83 }
84
85 arch_initcall(init_firebee);
86
87 /***************************************************************************/
88
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