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@amd.com> 10 * Stefan Agner <stefan.agner@toradex.com> 11 */ 12#include <common.h> 13#include <binman_sym.h> 14#include <image.h> 15#include <log.h> 16#include <mapmem.h> 17#include <spl.h> 18#include <linux/libfdt.h> 19 20static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector, 21 ulong count, void *buf) 22{ 23 ulong addr = 0; 24 25 debug("%s: sector %lx, count %lx, buf %lx\n", 26 __func__, sector, count, (ulong)buf); 27 28 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT)) { 29 addr = IF_ENABLED_INT(CONFIG_SPL_LOAD_FIT, 30 CONFIG_SPL_LOAD_FIT_ADDRESS); 31 } 32 addr += sector; 33 if (CONFIG_IS_ENABLED(IMAGE_PRE_LOAD)) 34 addr += image_load_offset; 35 36 memcpy(buf, (void *)addr, count); 37 38 return count; 39} 40 41static int spl_ram_load_image(struct spl_image_info *spl_image, 42 struct spl_boot_device *bootdev) 43{ 44 struct legacy_img_hdr *header; 45 ulong addr = 0; 46 int ret; 47 48 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT)) { 49 addr = IF_ENABLED_INT(CONFIG_SPL_LOAD_FIT, 50 CONFIG_SPL_LOAD_FIT_ADDRESS); 51 } 52 53 if (CONFIG_IS_ENABLED(IMAGE_PRE_LOAD)) { 54 ret = image_pre_load(addr); 55 56 if (ret) 57 return ret; 58 59 addr += image_load_offset; 60 } 61 header = map_sysmem(addr, 0); 62 63#if CONFIG_IS_ENABLED(DFU) 64 if (bootdev->boot_device == BOOT_DEVICE_DFU) 65 spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0"); 66#endif 67 68 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) && 69 image_get_magic(header) == FDT_MAGIC) { 70 struct spl_load_info load; 71 72 debug("Found FIT\n"); 73 spl_set_bl_len(&load, 1); 74 load.read = spl_ram_load_read; 75 ret = spl_load_simple_fit(spl_image, &load, 0, header); 76 } else { 77 ulong u_boot_pos = spl_get_image_pos(); 78 79 debug("Legacy image\n"); 80 /* 81 * Get the header. It will point to an address defined by 82 * handoff which will tell where the image located inside 83 * the flash. 84 */ 85 debug("u_boot_pos = %lx\n", u_boot_pos); 86 if (u_boot_pos == BINMAN_SYM_MISSING) { 87 /* 88 * No binman support or no information. For now, fix it 89 * to the address pointed to by U-Boot. 90 */ 91 u_boot_pos = (ulong)spl_get_load_buffer(-sizeof(*header), 92 sizeof(*header)); 93 } 94 header = map_sysmem(u_boot_pos, 0); 95 96 ret = spl_parse_image_header(spl_image, bootdev, header); 97 } 98 99 return ret; 100} 101#if CONFIG_IS_ENABLED(RAM_DEVICE) 102SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image); 103#endif 104#if CONFIG_IS_ENABLED(DFU) 105SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image); 106#endif 107