blob: a0b0051d3805919ae72e67b2aa186fafdb77c0c4 [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 {
Simon Glass10b84fe2015-08-30 16:55:26 -060017 RKSPI_SECT_LEN = RK_BLK_SIZE * 4,
18};
19
Jeffy Chen7bf274b2015-11-27 12:07:17 +080020static char dummy_hdr[RK_IMAGE_HEADER_LEN];
Simon Glass10b84fe2015-08-30 16:55:26 -060021
22static int rkspi_verify_header(unsigned char *buf, int size,
23 struct image_tool_params *params)
24{
25 return 0;
26}
27
28static void rkspi_print_header(const void *buf)
29{
30}
31
32static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd,
33 struct image_tool_params *params)
34{
35 int sector;
36 unsigned int size;
37 int ret;
38
39 size = params->orig_file_size;
Jeffy Chen7bf274b2015-11-27 12:07:17 +080040 ret = rkcommon_set_header(buf, size, params);
Simon Glass10b84fe2015-08-30 16:55:26 -060041 debug("size %x\n", size);
42 if (ret) {
43 /* TODO(sjg@chromium.org): This method should return an error */
44 printf("Warning: SPL image is too large (size %#x) and will not boot\n",
45 size);
46 }
47
Jeffy Chen7bf274b2015-11-27 12:07:17 +080048 memcpy(buf + RK_SPL_HDR_START, rkcommon_get_spl_hdr(params),
49 RK_SPL_HDR_SIZE);
Simon Glass10b84fe2015-08-30 16:55:26 -060050
51 /*
52 * Spread the image out so we only use the first 2KB of each 4KB
53 * region. This is a feature of the SPI format required by the Rockchip
54 * boot ROM. Its rationale is unknown.
55 */
56 for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) {
Simon Glass25525eb2015-12-29 05:22:44 -070057 debug("sector %u\n", sector);
Simon Glass10b84fe2015-08-30 16:55:26 -060058 memmove(buf + sector * RKSPI_SECT_LEN * 2,
59 buf + sector * RKSPI_SECT_LEN,
60 RKSPI_SECT_LEN);
61 memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN,
62 '\0', RKSPI_SECT_LEN);
63 }
64}
65
66static int rkspi_extract_subimage(void *buf, struct image_tool_params *params)
67{
68 return 0;
69}
70
71static int rkspi_check_image_type(uint8_t type)
72{
73 if (type == IH_TYPE_RKSPI)
74 return EXIT_SUCCESS;
75 else
76 return EXIT_FAILURE;
77}
78
79/* We pad the file out to a fixed size - this method returns that size */
80static int rkspi_vrec_header(struct image_tool_params *params,
81 struct image_type_params *tparams)
82{
83 int pad_size;
84
Jeffy Chen7bf274b2015-11-27 12:07:17 +080085 pad_size = (rkcommon_get_spl_size(params) + 0x7ff) / 0x800 * 0x800;
Simon Glass10b84fe2015-08-30 16:55:26 -060086 params->orig_file_size = pad_size;
87
88 /* We will double the image size due to the SPI format */
89 pad_size *= 2;
Jeffy Chen7bf274b2015-11-27 12:07:17 +080090 pad_size += RK_SPL_HDR_START;
Simon Glass10b84fe2015-08-30 16:55:26 -060091 debug("pad_size %x\n", pad_size);
92
93 return pad_size - params->file_size;
94}
95
96/*
97 * rk_spi parameters
98 */
99U_BOOT_IMAGE_TYPE(
100 rkspi,
101 "Rockchip SPI Boot Image support",
Jeffy Chen7bf274b2015-11-27 12:07:17 +0800102 RK_IMAGE_HEADER_LEN,
Simon Glass10b84fe2015-08-30 16:55:26 -0600103 dummy_hdr,
Jeffy Chen7bf274b2015-11-27 12:07:17 +0800104 rkcommon_check_params,
Simon Glass10b84fe2015-08-30 16:55:26 -0600105 rkspi_verify_header,
106 rkspi_print_header,
107 rkspi_set_header,
108 rkspi_extract_subimage,
109 rkspi_check_image_type,
110 NULL,
111 rkspi_vrec_header
112);