| /* |
| * (C) Copyright 2015 Google, Inc |
| * Written by Simon Glass <sjg@chromium.org> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| * |
| * See README.rockchip for details of the rkspi format |
| */ |
| |
| #include "imagetool.h" |
| #include <image.h> |
| #include <rc4.h> |
| #include "mkimage.h" |
| #include "rkcommon.h" |
| |
| enum { |
| RKSPI_SECT_LEN = RK_BLK_SIZE * 4, |
| }; |
| |
| static char dummy_hdr[RK_IMAGE_HEADER_LEN]; |
| |
| static int rkspi_verify_header(unsigned char *buf, int size, |
| struct image_tool_params *params) |
| { |
| return 0; |
| } |
| |
| static void rkspi_print_header(const void *buf) |
| { |
| } |
| |
| static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd, |
| struct image_tool_params *params) |
| { |
| int sector; |
| unsigned int size; |
| int ret; |
| |
| size = params->orig_file_size; |
| ret = rkcommon_set_header(buf, size, params); |
| debug("size %x\n", size); |
| if (ret) { |
| /* TODO(sjg@chromium.org): This method should return an error */ |
| printf("Warning: SPL image is too large (size %#x) and will not boot\n", |
| size); |
| } |
| |
| memcpy(buf + RK_SPL_HDR_START, rkcommon_get_spl_hdr(params), |
| RK_SPL_HDR_SIZE); |
| |
| if (rkcommon_need_rc4_spl(params)) |
| rkcommon_rc4_encode_spl(buf, RK_SPL_HDR_START, |
| params->file_size - RK_SPL_HDR_START); |
| |
| /* |
| * Spread the image out so we only use the first 2KB of each 4KB |
| * region. This is a feature of the SPI format required by the Rockchip |
| * boot ROM. Its rationale is unknown. |
| */ |
| for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) { |
| debug("sector %u\n", sector); |
| memmove(buf + sector * RKSPI_SECT_LEN * 2, |
| buf + sector * RKSPI_SECT_LEN, |
| RKSPI_SECT_LEN); |
| memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN, |
| '\0', RKSPI_SECT_LEN); |
| } |
| } |
| |
| static int rkspi_extract_subimage(void *buf, struct image_tool_params *params) |
| { |
| return 0; |
| } |
| |
| static int rkspi_check_image_type(uint8_t type) |
| { |
| if (type == IH_TYPE_RKSPI) |
| return EXIT_SUCCESS; |
| else |
| return EXIT_FAILURE; |
| } |
| |
| /* We pad the file out to a fixed size - this method returns that size */ |
| static int rkspi_vrec_header(struct image_tool_params *params, |
| struct image_type_params *tparams) |
| { |
| int pad_size; |
| |
| pad_size = (rkcommon_get_spl_size(params) + 0x7ff) / 0x800 * 0x800; |
| params->orig_file_size = pad_size; |
| |
| /* We will double the image size due to the SPI format */ |
| pad_size *= 2; |
| pad_size += RK_SPL_HDR_START; |
| debug("pad_size %x\n", pad_size); |
| |
| return pad_size - params->file_size; |
| } |
| |
| /* |
| * rk_spi parameters |
| */ |
| U_BOOT_IMAGE_TYPE( |
| rkspi, |
| "Rockchip SPI Boot Image support", |
| RK_IMAGE_HEADER_LEN, |
| dummy_hdr, |
| rkcommon_check_params, |
| rkspi_verify_header, |
| rkspi_print_header, |
| rkspi_set_header, |
| rkspi_extract_subimage, |
| rkspi_check_image_type, |
| NULL, |
| rkspi_vrec_header |
| ); |