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git.ipfire.org Git - people/ms/u-boot.git/blob - tools/mksunxiboot.c
2 * (C) Copyright 2007-2011
3 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
4 * Tom Cubie <tangliang@allwinnertech.com>
6 * a simple tool to generate bootable image for sunxi platform.
8 * SPDX-License-Identifier: GPL-2.0+
16 #include <sys/types.h>
18 #include "asm/arch/spl.h"
20 #define STAMP_VALUE 0x5F0A6C39
22 /* check sum functon from sun4i boot code */
23 int gen_check_sum(struct boot_file_head
*head_p
)
31 length
= le32_to_cpu(head_p
->length
);
32 if ((length
& 0x3) != 0) /* must 4-byte-aligned */
34 buf
= (uint32_t *)head_p
;
35 head_p
->check_sum
= cpu_to_le32(STAMP_VALUE
); /* fill stamp */
38 /* calculate the sum */
39 for (i
= 0, sum
= 0; i
< loop
; i
++)
40 sum
+= le32_to_cpu(buf
[i
]);
42 /* write back check sum */
43 head_p
->check_sum
= cpu_to_le32(sum
);
48 #define ALIGN(x, a) __ALIGN_MASK((x), (typeof(x))(a)-1)
49 #define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
51 #define SUN4I_SRAM_SIZE 0x7600 /* 0x7748+ is used by BROM */
52 #define SRAM_LOAD_MAX_SIZE (SUN4I_SRAM_SIZE - sizeof(struct boot_file_head))
55 * BROM (at least on A10 and A20) requires NAND-images to be explicitly aligned
56 * to a multiple of 8K, and rejects the image otherwise. MMC-images are fine
57 * with 512B blocks. To cater for both, align to the largest of the two.
59 #define BLOCK_SIZE 0x2000
62 struct boot_file_head header
;
63 char code
[SRAM_LOAD_MAX_SIZE
];
67 int main(int argc
, char *argv
[])
75 printf("\tThis program makes an input bin file to sun4i " \
77 "\tUsage: %s input_file out_putfile\n", argv
[0]);
81 fd_in
= open(argv
[1], O_RDONLY
);
83 perror("Open input file");
87 memset(&img
, 0, sizeof(img
));
89 /* get input file size */
90 file_size
= lseek(fd_in
, 0, SEEK_END
);
92 if (file_size
> SRAM_LOAD_MAX_SIZE
) {
93 fprintf(stderr
, "ERROR: File too large!\n");
97 fd_out
= open(argv
[2], O_WRONLY
| O_CREAT
, 0666);
99 perror("Open output file");
103 /* read file to buffer to calculate checksum */
104 lseek(fd_in
, 0, SEEK_SET
);
105 count
= read(fd_in
, img
.code
, file_size
);
106 if (count
!= file_size
) {
107 perror("Reading input image");
111 /* fill the header */
112 img
.header
.b_instruction
= /* b instruction */
113 0xEA000000 | /* jump to the first instr after the header */
114 ((sizeof(struct boot_file_head
) / sizeof(int) - 2)
116 memcpy(img
.header
.magic
, BOOT0_MAGIC
, 8); /* no '0' termination */
118 ALIGN(file_size
+ sizeof(struct boot_file_head
), BLOCK_SIZE
);
119 img
.header
.b_instruction
= cpu_to_le32(img
.header
.b_instruction
);
120 img
.header
.length
= cpu_to_le32(img
.header
.length
);
122 memcpy(img
.header
.spl_signature
, SPL_SIGNATURE
, 3); /* "sunxi" marker */
123 img
.header
.spl_signature
[3] = SPL_HEADER_VERSION
;
125 gen_check_sum(&img
.header
);
127 count
= write(fd_out
, &img
, le32_to_cpu(img
.header
.length
));
128 if (count
!= le32_to_cpu(img
.header
.length
)) {
129 perror("Writing output");