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 <spl.h> 15 #include <libfdt.h> 16 17 #ifndef CONFIG_SPL_LOAD_FIT_ADDRESS 18 # define CONFIG_SPL_LOAD_FIT_ADDRESS 0 19 #endif 20 21 static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector, 22 ulong count, void *buf) 23 { 24 debug("%s: sector %lx, count %lx, buf %lx\n", 25 __func__, sector, count, (ulong)buf); 26 memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count); 27 return count; 28 } 29 30 static int spl_ram_load_image(struct spl_image_info *spl_image, 31 struct spl_boot_device *bootdev) 32 { 33 struct image_header *header; 34 35 header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS; 36 37 #if defined(CONFIG_SPL_DFU_SUPPORT) 38 if (bootdev->boot_device == BOOT_DEVICE_DFU) 39 spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0"); 40 #endif 41 42 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) && 43 image_get_magic(header) == FDT_MAGIC) { 44 struct spl_load_info load; 45 46 debug("Found FIT\n"); 47 load.bl_len = 1; 48 load.read = spl_ram_load_read; 49 spl_load_simple_fit(spl_image, &load, 0, header); 50 } else { 51 debug("Legacy image\n"); 52 /* 53 * Get the header. It will point to an address defined by 54 * handoff which will tell where the image located inside 55 * the flash. For now, it will temporary fixed to address 56 * pointed by U-Boot. 57 */ 58 header = (struct image_header *) 59 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header)); 60 61 spl_parse_image_header(spl_image, header); 62 } 63 64 return 0; 65 } 66 #if defined(CONFIG_SPL_RAM_DEVICE) 67 SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image); 68 #endif 69 #if defined(CONFIG_SPL_DFU_SUPPORT) 70 SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image); 71 #endif 72 73 74