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