1 /* 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 16 enum { 17 RKSPI_SECT_LEN = RK_BLK_SIZE * 4, 18 }; 19 20 static int rkspi_verify_header(unsigned char *buf, int size, 21 struct image_tool_params *params) 22 { 23 return 0; 24 } 25 26 static void rkspi_print_header(const void *buf) 27 { 28 } 29 30 static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd, 31 struct image_tool_params *params) 32 { 33 int sector; 34 unsigned int size; 35 int ret; 36 37 size = params->orig_file_size; 38 ret = rkcommon_set_header(buf, size, params); 39 debug("size %x\n", size); 40 if (ret) { 41 /* TODO(sjg@chromium.org): This method should return an error */ 42 printf("Warning: SPL image is too large (size %#x) and will not boot\n", 43 size); 44 } 45 46 /* 47 * Spread the image out so we only use the first 2KB of each 4KB 48 * region. This is a feature of the SPI format required by the Rockchip 49 * boot ROM. Its rationale is unknown. 50 */ 51 for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) { 52 debug("sector %u\n", sector); 53 memmove(buf + sector * RKSPI_SECT_LEN * 2, 54 buf + sector * RKSPI_SECT_LEN, 55 RKSPI_SECT_LEN); 56 memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN, 57 '\0', RKSPI_SECT_LEN); 58 } 59 } 60 61 static int rkspi_extract_subimage(void *buf, struct image_tool_params *params) 62 { 63 return 0; 64 } 65 66 static int rkspi_check_image_type(uint8_t type) 67 { 68 if (type == IH_TYPE_RKSPI) 69 return EXIT_SUCCESS; 70 else 71 return EXIT_FAILURE; 72 } 73 74 /* We pad the file out to a fixed size - this method returns that size */ 75 static int rkspi_vrec_header(struct image_tool_params *params, 76 struct image_type_params *tparams) 77 { 78 int pad_size; 79 80 rkcommon_vrec_header(params, tparams); 81 82 pad_size = (rkcommon_get_spl_size(params) + 0x7ff) / 0x800 * 0x800; 83 params->orig_file_size = pad_size; 84 85 /* We will double the image size due to the SPI format */ 86 pad_size *= 2; 87 pad_size += RK_SPL_HDR_START; 88 debug("pad_size %x\n", pad_size); 89 90 return pad_size - params->file_size - tparams->header_size; 91 } 92 93 /* 94 * rk_spi parameters 95 */ 96 U_BOOT_IMAGE_TYPE( 97 rkspi, 98 "Rockchip SPI Boot Image support", 99 0, 100 NULL, 101 rkcommon_check_params, 102 rkspi_verify_header, 103 rkspi_print_header, 104 rkspi_set_header, 105 rkspi_extract_subimage, 106 rkspi_check_image_type, 107 NULL, 108 rkspi_vrec_header 109 ); 110