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 
init_firebee(void)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