1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2019 Western Digital Corporation or its affiliates. 4 * Authors: 5 * Atish Patra <atish.patra@wdc.com> 6 * Based on arm/lib/image.c 7 */ 8 9 #include <common.h> 10 #include <image.h> 11 #include <mapmem.h> 12 #include <errno.h> 13 #include <asm/global_data.h> 14 #include <linux/sizes.h> 15 #include <linux/stddef.h> 16 17 DECLARE_GLOBAL_DATA_PTR; 18 19 /* ASCII version of "RSC\0x5" defined in Linux kernel */ 20 #define LINUX_RISCV_IMAGE_MAGIC 0x05435352 21 22 struct linux_image_h { 23 uint32_t code0; /* Executable code */ 24 uint32_t code1; /* Executable code */ 25 uint64_t text_offset; /* Image load offset */ 26 uint64_t image_size; /* Effective Image size */ 27 uint64_t flags; /* kernel flags (little endian) */ 28 uint32_t version; /* version of the header */ 29 uint32_t res1; /* reserved */ 30 uint64_t res2; /* reserved */ 31 uint64_t res3; /* reserved */ 32 uint32_t magic; /* Magic number */ 33 uint32_t res4; /* reserved */ 34 }; 35 booti_setup(ulong image,ulong * relocated_addr,ulong * size,bool force_reloc)36int booti_setup(ulong image, ulong *relocated_addr, ulong *size, 37 bool force_reloc) 38 { 39 struct linux_image_h *lhdr; 40 41 lhdr = (struct linux_image_h *)map_sysmem(image, 0); 42 43 if (lhdr->magic != LINUX_RISCV_IMAGE_MAGIC) { 44 puts("Bad Linux RISCV Image magic!\n"); 45 return -EINVAL; 46 } 47 48 if (lhdr->image_size == 0) { 49 puts("Image lacks image_size field, error!\n"); 50 return -EINVAL; 51 } 52 *size = lhdr->image_size; 53 *relocated_addr = gd->ram_base + lhdr->text_offset; 54 55 unmap_sysmem(lhdr); 56 57 return 0; 58 } 59