aboutsummaryrefslogtreecommitdiff
path: root/tools/lpc32xximage.c
blob: 715a55a5b5b3cb322a7d338ebcb47f4e0662515b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
// SPDX-License-Identifier: GPL-2.0+
/*
 * Image manipulator for LPC32XX SoCs
 *
 * (C) Copyright 2015  DENX Software Engineering GmbH
 * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
 *
 * Derived from omapimage.c:
 *
 * (C) Copyright 2010
 * Linaro LTD, www.linaro.org
 * Author: John Rigby <john.rigby@linaro.org>
 * Based on TI's signGP.c
 *
 * (C) Copyright 2009
 * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
 *
 * (C) Copyright 2008
 * Marvell Semiconductor <www.marvell.com>
 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
 */

#include "imagetool.h"
#include <compiler.h>
#include <image.h>

/*
 * NAND page 0 boot header
 */

struct nand_page_0_boot_header {
	uint32_t data[129];
	uint32_t pad[383];
};

/*
 * Default ICC (interface configuration data [sic]) if none specified
 * in board config
 */

#ifndef LPC32XX_BOOT_ICR
#define LPC32XX_BOOT_ICR 0x00000096
#endif

/*
 * Default boot NAND page size if none specified in board config
 */

#ifndef LPC32XX_BOOT_NAND_PAGESIZE
#define LPC32XX_BOOT_NAND_PAGESIZE 2048
#endif

/*
 * Default boot NAND pages per sector if none specified in board config
 */

#ifndef LPC32XX_BOOT_NAND_PAGES_PER_SECTOR
#define LPC32XX_BOOT_NAND_PAGES_PER_SECTOR 64
#endif

/*
 * Maximum size for boot code is 56K unless defined in board config
 */

#ifndef LPC32XX_BOOT_CODESIZE
#define LPC32XX_BOOT_CODESIZE (56*1024)
#endif

/* signature byte for a readable block */

#define LPC32XX_BOOT_BLOCK_OK 0xaa

static struct nand_page_0_boot_header lpc32xximage_header;

static int lpc32xximage_check_image_types(uint8_t type)
{
	if (type == IH_TYPE_LPC32XXIMAGE)
		return EXIT_SUCCESS;
	return EXIT_FAILURE;
}

static int lpc32xximage_verify_header(unsigned char *ptr, int image_size,
			struct image_tool_params *params)
{
	struct nand_page_0_boot_header *hdr =
		(struct nand_page_0_boot_header *)ptr;

	/* turn image size from bytes to NAND pages, page 0 included */
	int image_size_in_pages = ((image_size - 1)
				  / LPC32XX_BOOT_NAND_PAGESIZE);

	if (hdr->data[0] != (0xff & LPC32XX_BOOT_ICR))
		return -1;
	if (hdr->data[1] != (0xff & ~LPC32XX_BOOT_ICR))
		return -1;
	if (hdr->data[2] != (0xff & LPC32XX_BOOT_ICR))
		return -1;
	if (hdr->data[3] != (0xff & ~LPC32XX_BOOT_ICR))
		return -1;
	if (hdr->data[4] != (0xff & image_size_in_pages))
		return -1;
	if (hdr->data[5] != (0xff & ~image_size_in_pages))
		return -1;
	if (hdr->data[6] != (0xff & image_size_in_pages))
		return -1;
	if (hdr->data[7] != (0xff & ~image_size_in_pages))
		return -1;
	if (hdr->data[8] != (0xff & image_size_in_pages))
		return -1;
	if (hdr->data[9] != (0xff & ~image_size_in_pages))
		return -1;
	if (hdr->data[10] != (0xff & image_size_in_pages))
		return -1;
	if (hdr->data[11] != (0xff & ~image_size_in_pages))
		return -1;
	if (hdr->data[12] != LPC32XX_BOOT_BLOCK_OK)
		return -1;
	if (hdr->data[128] != LPC32XX_BOOT_BLOCK_OK)
		return -1;
	return 0;
}

static void print_hdr_byte(struct nand_page_0_boot_header *hdr, int ofs)
{
	printf("header[%d] = %02x\n", ofs, hdr->data[ofs]);
}

static void lpc32xximage_print_header(const void *ptr, struct image_tool_params *params)
{
	struct nand_page_0_boot_header *hdr =
		(struct nand_page_0_boot_header *)ptr;
	int ofs;

	for (ofs = 0; ofs <= 12; ofs++)
		print_hdr_byte(hdr, ofs);
	print_hdr_byte(hdr, 128);
}

static void lpc32xximage_set_header(void *ptr, struct stat *sbuf, int ifd,
				struct image_tool_params *params)
{
	struct nand_page_0_boot_header *hdr =
		(struct nand_page_0_boot_header *)ptr;

	/* turn image size from bytes to NAND pages, page 0 included */
	int image_size_in_pages = ((sbuf->st_size
				  + LPC32XX_BOOT_NAND_PAGESIZE - 1)
				  / LPC32XX_BOOT_NAND_PAGESIZE);

	/* fill header -- default byte value is 0x00, not 0xFF */
	memset((void *)hdr, 0, sizeof(*hdr));
	hdr->data[0] = (hdr->data[2] = 0xff & LPC32XX_BOOT_ICR);
	hdr->data[1] = (hdr->data[3] = 0xff & ~LPC32XX_BOOT_ICR);
	hdr->data[4] = (hdr->data[6] = (hdr->data[8]
		       = (hdr->data[10] = 0xff & image_size_in_pages)));
	hdr->data[5] = (hdr->data[7] = (hdr->data[9]
		       = (hdr->data[11] = 0xff & ~image_size_in_pages)));
	hdr->data[12] = (hdr->data[128] = LPC32XX_BOOT_BLOCK_OK);
}

/*
 * lpc32xximage parameters
 */
U_BOOT_IMAGE_TYPE(
	lpc32xximage,
	"LPC32XX Boot Image",
	sizeof(lpc32xximage_header),
	(void *)&lpc32xximage_header,
	NULL,
	lpc32xximage_verify_header,
	lpc32xximage_print_header,
	lpc32xximage_set_header,
	NULL,
	lpc32xximage_check_image_types,
	NULL,
	NULL
);