]>
git.ipfire.org Git - people/ms/u-boot.git/blob - tools/rkcommon.c
2 * (C) Copyright 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
7 * Helper functions for Rockchip images
10 #include "imagetool.h"
17 RK_SIGNATURE
= 0x0ff0aa55,
21 * struct header0_info - header block for boot ROM
23 * This is stored at SD card block 64 (where each block is 512 bytes, or at
24 * the start of SPI flash. It is encoded with RC4.
26 * @signature: Signature (must be RKSD_SIGNATURE)
27 * @disable_rc4: 0 to use rc4 for boot image, 1 to use plain binary
28 * @code1_offset: Offset in blocks of the SPL code from this header
29 * block. E.g. 4 means 2KB after the start of this header.
30 * Other fields are not used by U-Boot
36 uint16_t code1_offset
;
37 uint16_t code2_offset
;
38 uint8_t reserved1
[490];
39 uint16_t usflashdatasize
;
40 uint16_t ucflashbootsize
;
44 static unsigned char rc4_key
[16] = {
45 124, 78, 3, 4, 85, 5, 9, 7,
46 45, 44, 123, 56, 23, 13, 23, 17
49 int rkcommon_set_header(void *buf
, uint file_size
)
51 struct header0_info
*hdr
;
53 if (file_size
> RK_MAX_CODE1_SIZE
)
56 memset(buf
, '\0', RK_CODE1_OFFSET
* RK_BLK_SIZE
);
57 hdr
= (struct header0_info
*)buf
;
58 hdr
->signature
= RK_SIGNATURE
;
60 hdr
->code1_offset
= RK_CODE1_OFFSET
;
61 hdr
->code2_offset
= 8;
63 hdr
->usflashdatasize
= (file_size
+ RK_BLK_SIZE
- 1) / RK_BLK_SIZE
;
64 hdr
->usflashdatasize
= (hdr
->usflashdatasize
+ 3) & ~3;
65 hdr
->ucflashbootsize
= hdr
->usflashdatasize
;
67 debug("size=%x, %x\n", params
->file_size
, hdr
->usflashdatasize
);
69 rc4_encode(buf
, RK_BLK_SIZE
, rc4_key
);