blob: a3c4c73916440b3d1bb7b06ba192374cea04fc7f [file] [log] [blame]
Simon Glass10b84fe2015-08-30 16:55:26 -06001/*
2 * (C) Copyright 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 *
7 * See README.rockchip for details of the rkspi format
8 */
9
10#include "imagetool.h"
11#include <image.h>
12#include <rc4.h>
13#include "mkimage.h"
14#include "rkcommon.h"
15
16enum {
17 RKSPI_SPL_HDR_START = RK_CODE1_OFFSET * RK_BLK_SIZE,
18 RKSPI_SPL_START = RKSPI_SPL_HDR_START + 4,
19 RKSPI_HEADER_LEN = RKSPI_SPL_START,
20 RKSPI_SECT_LEN = RK_BLK_SIZE * 4,
21};
22
23static char dummy_hdr[RKSPI_HEADER_LEN];
24
25static int rkspi_check_params(struct image_tool_params *params)
26{
27 return 0;
28}
29
30static int rkspi_verify_header(unsigned char *buf, int size,
31 struct image_tool_params *params)
32{
33 return 0;
34}
35
36static void rkspi_print_header(const void *buf)
37{
38}
39
40static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd,
41 struct image_tool_params *params)
42{
43 int sector;
44 unsigned int size;
45 int ret;
46
47 size = params->orig_file_size;
48 ret = rkcommon_set_header(buf, size);
49 debug("size %x\n", size);
50 if (ret) {
51 /* TODO(sjg@chromium.org): This method should return an error */
52 printf("Warning: SPL image is too large (size %#x) and will not boot\n",
53 size);
54 }
55
56 memcpy(buf + RKSPI_SPL_HDR_START, "RK32", 4);
57
58 /*
59 * Spread the image out so we only use the first 2KB of each 4KB
60 * region. This is a feature of the SPI format required by the Rockchip
61 * boot ROM. Its rationale is unknown.
62 */
63 for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) {
64 printf("sector %u\n", sector);
65 memmove(buf + sector * RKSPI_SECT_LEN * 2,
66 buf + sector * RKSPI_SECT_LEN,
67 RKSPI_SECT_LEN);
68 memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN,
69 '\0', RKSPI_SECT_LEN);
70 }
71}
72
73static int rkspi_extract_subimage(void *buf, struct image_tool_params *params)
74{
75 return 0;
76}
77
78static int rkspi_check_image_type(uint8_t type)
79{
80 if (type == IH_TYPE_RKSPI)
81 return EXIT_SUCCESS;
82 else
83 return EXIT_FAILURE;
84}
85
86/* We pad the file out to a fixed size - this method returns that size */
87static int rkspi_vrec_header(struct image_tool_params *params,
88 struct image_type_params *tparams)
89{
90 int pad_size;
91
92 pad_size = (RK_MAX_CODE1_SIZE + 0x7ff) / 0x800 * 0x800;
93 params->orig_file_size = pad_size;
94
95 /* We will double the image size due to the SPI format */
96 pad_size *= 2;
97 pad_size += RKSPI_SPL_HDR_START;
98 debug("pad_size %x\n", pad_size);
99
100 return pad_size - params->file_size;
101}
102
103/*
104 * rk_spi parameters
105 */
106U_BOOT_IMAGE_TYPE(
107 rkspi,
108 "Rockchip SPI Boot Image support",
109 RKSPI_HEADER_LEN,
110 dummy_hdr,
111 rkspi_check_params,
112 rkspi_verify_header,
113 rkspi_print_header,
114 rkspi_set_header,
115 rkspi_extract_subimage,
116 rkspi_check_image_type,
117 NULL,
118 rkspi_vrec_header
119);