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 * @init_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
37 uint8_t reserved1[492];
39 uint16_t init_boot_size;
44 * struct spl_info - spl info for each chip
46 * @imagename: Image name(passed by "mkimage -n")
47 * @spl_hdr: Boot ROM requires a 4-bytes spl header
48 * @spl_size: Spl size(include extra 4-bytes spl header)
51 const char *imagename;
53 const uint32_t spl_size;
56 static struct spl_info spl_infos[] = {
57 { "rk3036", "RK30", 0x1000 },
58 { "rk3288", "RK32", 0x8000 },
59 { "rk3399", "RK33", 0x20000 },
62 static unsigned char rc4_key[16] = {
63 124, 78, 3, 4, 85, 5, 9, 7,
64 45, 44, 123, 56, 23, 13, 23, 17
67 static struct spl_info *rkcommon_get_spl_info(char *imagename)
71 for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
72 if (!strncmp(imagename, spl_infos[i].imagename, 6))
78 int rkcommon_check_params(struct image_tool_params *params)
82 if (rkcommon_get_spl_info(params->imagename) != NULL)
85 fprintf(stderr, "ERROR: imagename (%s) is not supported!\n",
86 strlen(params->imagename) > 0 ? params->imagename : "NULL");
88 fprintf(stderr, "Available imagename:");
89 for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
90 fprintf(stderr, "\t%s", spl_infos[i].imagename);
91 fprintf(stderr, "\n");
96 const char *rkcommon_get_spl_hdr(struct image_tool_params *params)
98 struct spl_info *info = rkcommon_get_spl_info(params->imagename);
101 * info would not be NULL, because of we checked params before.
103 return info->spl_hdr;
106 int rkcommon_get_spl_size(struct image_tool_params *params)
108 struct spl_info *info = rkcommon_get_spl_info(params->imagename);
111 * info would not be NULL, because of we checked params before.
113 return info->spl_size;
116 int rkcommon_set_header(void *buf, uint file_size,
117 struct image_tool_params *params)
119 struct header0_info *hdr;
121 if (file_size > rkcommon_get_spl_size(params))
124 memset(buf, '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
125 hdr = (struct header0_info *)buf;
126 hdr->signature = RK_SIGNATURE;
127 hdr->disable_rc4 = 1;
128 hdr->init_offset = RK_INIT_OFFSET;
130 hdr->init_size = (file_size + RK_BLK_SIZE - 1) / RK_BLK_SIZE;
131 hdr->init_size = (hdr->init_size + 3) & ~3;
132 hdr->init_boot_size = hdr->init_size + RK_MAX_BOOT_SIZE / RK_BLK_SIZE;
134 rc4_encode(buf, RK_BLK_SIZE, rc4_key);