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9#include <fcntl.h>
10#include <stdio.h>
11#include <unistd.h>
12#include <stdlib.h>
13#include <string.h>
14#include <errno.h>
15#include <sys/types.h>
16#include <sys/stat.h>
17#include "../arch/arm/include/asm/arch-sunxi/spl.h"
18
19#define STAMP_VALUE 0x5F0A6C39
20
21
22int gen_check_sum(struct boot_file_head *head_p)
23{
24 uint32_t length;
25 uint32_t *buf;
26 uint32_t loop;
27 uint32_t i;
28 uint32_t sum;
29
30 length = le32_to_cpu(head_p->length);
31 if ((length & 0x3) != 0)
32 return -1;
33 buf = (uint32_t *)head_p;
34 head_p->check_sum = cpu_to_le32(STAMP_VALUE);
35 loop = length >> 2;
36
37
38 for (i = 0, sum = 0; i < loop; i++)
39 sum += le32_to_cpu(buf[i]);
40
41
42 head_p->check_sum = cpu_to_le32(sum);
43
44 return 0;
45}
46
47#define ALIGN(x, a) __ALIGN_MASK((x), (typeof(x))(a)-1)
48#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
49
50#define SUNXI_SRAM_SIZE 0x8000
51#define SRAM_LOAD_MAX_SIZE (SUNXI_SRAM_SIZE - sizeof(struct boot_file_head))
52
53
54
55
56
57
58#define BLOCK_SIZE 0x2000
59
60struct boot_img {
61 struct boot_file_head header;
62 char code[SRAM_LOAD_MAX_SIZE];
63 char pad[BLOCK_SIZE];
64};
65
66int main(int argc, char *argv[])
67{
68 int fd_in, fd_out;
69 struct boot_img img;
70 unsigned file_size;
71 int count;
72 char *tool_name = argv[0];
73 char *default_dt = NULL;
74
75
76 if ((sizeof(img.header) % 32) != 0) {
77 fprintf(stderr, "ERROR: the SPL header must be a multiple ");
78 fprintf(stderr, "of 32 bytes.\n");
79 return EXIT_FAILURE;
80 }
81
82
83 while (argc >= 2 && argv[1][0] == '-') {
84 if (strcmp(argv[1], "--default-dt") == 0) {
85 if (argc >= 3) {
86 default_dt = argv[2];
87 argv += 2;
88 argc -= 2;
89 continue;
90 }
91 fprintf(stderr, "ERROR: no --default-dt arg\n");
92 return EXIT_FAILURE;
93 } else {
94 fprintf(stderr, "ERROR: bad option '%s'\n", argv[1]);
95 return EXIT_FAILURE;
96 }
97 }
98
99 if (argc < 3) {
100 printf("This program converts an input binary file to a sunxi bootable image.\n");
101 printf("\nUsage: %s [options] input_file output_file\n",
102 tool_name);
103 printf("Where [options] may be:\n");
104 printf(" --default-dt arg - 'arg' is the default device tree name\n");
105 printf(" (CONFIG_DEFAULT_DEVICE_TREE).\n");
106 return EXIT_FAILURE;
107 }
108
109 fd_in = open(argv[1], O_RDONLY);
110 if (fd_in < 0) {
111 perror("Open input file");
112 return EXIT_FAILURE;
113 }
114
115 memset(&img, 0, sizeof(img));
116
117
118 file_size = lseek(fd_in, 0, SEEK_END);
119
120 if (file_size > SRAM_LOAD_MAX_SIZE) {
121 fprintf(stderr, "ERROR: File too large!\n");
122 return EXIT_FAILURE;
123 }
124
125 fd_out = open(argv[2], O_WRONLY | O_CREAT, 0666);
126 if (fd_out < 0) {
127 perror("Open output file");
128 return EXIT_FAILURE;
129 }
130
131
132 lseek(fd_in, 0, SEEK_SET);
133 count = read(fd_in, img.code, file_size);
134 if (count != file_size) {
135 perror("Reading input image");
136 return EXIT_FAILURE;
137 }
138
139
140 img.header.b_instruction =
141 0xEA000000 |
142 ((sizeof(struct boot_file_head) / sizeof(int) - 2)
143 & 0x00FFFFFF);
144 memcpy(img.header.magic, BOOT0_MAGIC, 8);
145 img.header.length =
146 ALIGN(file_size + sizeof(struct boot_file_head), BLOCK_SIZE);
147 img.header.b_instruction = cpu_to_le32(img.header.b_instruction);
148 img.header.length = cpu_to_le32(img.header.length);
149
150 memcpy(img.header.spl_signature, SPL_SIGNATURE, 3);
151 img.header.spl_signature[3] = SPL_HEADER_VERSION;
152
153 if (default_dt) {
154 if (strlen(default_dt) + 1 <= sizeof(img.header.string_pool)) {
155 strcpy((char *)img.header.string_pool, default_dt);
156 img.header.dt_name_offset =
157 cpu_to_le32(offsetof(struct boot_file_head,
158 string_pool));
159 } else {
160 printf("WARNING: The SPL header is too small\n");
161 printf(" and has no space to store the dt name.\n");
162 }
163 }
164
165 gen_check_sum(&img.header);
166
167 count = write(fd_out, &img, le32_to_cpu(img.header.length));
168 if (count != le32_to_cpu(img.header.length)) {
169 perror("Writing output");
170 return EXIT_FAILURE;
171 }
172
173 close(fd_in);
174 close(fd_out);
175
176 return EXIT_SUCCESS;
177}
178