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 | |