1 /* 2 * (C) Copyright 2016 3 * Xilinx, Inc. 4 * 5 * (C) Copyright 2016 6 * Toradex AG 7 * 8 * Michal Simek <michal.simek@xilinx.com> 9 * Stefan Agner <stefan.agner@toradex.com> 10 * 11 * SPDX-License-Identifier: GPL-2.0+ 12 */ 13 #include <common.h> 14 #include <binman_sym.h> 15 #include <mapmem.h> 16 #include <spl.h> 17 #include <libfdt.h> 18 19 #ifndef CONFIG_SPL_LOAD_FIT_ADDRESS 20 # define CONFIG_SPL_LOAD_FIT_ADDRESS 0 21 #endif 22 23 static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector, 24 ulong count, void *buf) 25 { 26 debug("%s: sector %lx, count %lx, buf %lx\n", 27 __func__, sector, count, (ulong)buf); 28 memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count); 29 return count; 30 } 31 32 static int spl_ram_load_image(struct spl_image_info *spl_image, 33 struct spl_boot_device *bootdev) 34 { 35 struct image_header *header; 36 37 header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS; 38 39 #if defined(CONFIG_SPL_DFU_SUPPORT) 40 if (bootdev->boot_device == BOOT_DEVICE_DFU) 41 spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0"); 42 #endif 43 44 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) && 45 image_get_magic(header) == FDT_MAGIC) { 46 struct spl_load_info load; 47 48 debug("Found FIT\n"); 49 load.bl_len = 1; 50 load.read = spl_ram_load_read; 51 spl_load_simple_fit(spl_image, &load, 0, header); 52 } else { 53 ulong u_boot_pos = binman_sym(ulong, u_boot_any, pos); 54 55 debug("Legacy image\n"); 56 /* 57 * Get the header. It will point to an address defined by 58 * handoff which will tell where the image located inside 59 * the flash. 60 */ 61 debug("u_boot_pos = %lx\n", u_boot_pos); 62 if (u_boot_pos == BINMAN_SYM_MISSING) { 63 /* 64 * No binman support or no information. For now, fix it 65 * to the address pointed to by U-Boot. 66 */ 67 u_boot_pos = CONFIG_SYS_TEXT_BASE - 68 sizeof(struct image_header); 69 } 70 header = (struct image_header *)map_sysmem(u_boot_pos, 0); 71 72 spl_parse_image_header(spl_image, header); 73 } 74 75 return 0; 76 } 77 #if defined(CONFIG_SPL_RAM_DEVICE) 78 SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image); 79 #endif 80 #if defined(CONFIG_SPL_DFU_SUPPORT) 81 SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image); 82 #endif 83 84 85