1 /* 2 * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <arch_helpers.h> 8 #include <assert.h> 9 #include <debug.h> 10 #include <firmware_image_package.h> 11 #include <io_block.h> 12 #include <io_driver.h> 13 #include <io_fip.h> 14 #include <io_memmap.h> 15 #include <io_storage.h> 16 #include <mmio.h> 17 #include <partition/partition.h> 18 #include <semihosting.h> 19 #include <string.h> 20 #include <tbbr_img_def.h> 21 #include <utils.h> 22 #include "platform_def.h" 23 24 static const io_dev_connector_t *mmap_dev_con; 25 static const io_dev_connector_t *fip_dev_con; 26 27 static uintptr_t mmap_dev_handle; 28 static uintptr_t fip_dev_handle; 29 30 static int open_mmap(const uintptr_t spec); 31 static int open_fip(const uintptr_t spec); 32 33 static const io_block_spec_t loader_fip_spec = { 34 .offset = FIP_BASE, 35 .length = FIP_SIZE 36 }; 37 38 static const io_uuid_spec_t bl2_uuid_spec = { 39 .uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2, 40 }; 41 42 static const io_uuid_spec_t bl31_uuid_spec = { 43 .uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31, 44 }; 45 46 static const io_uuid_spec_t bl33_uuid_spec = { 47 .uuid = UUID_NON_TRUSTED_FIRMWARE_BL33, 48 }; 49 50 struct plat_io_policy { 51 uintptr_t *dev_handle; 52 uintptr_t image_spec; 53 int (*check)(const uintptr_t spec); 54 }; 55 56 static const struct plat_io_policy policies[] = { 57 [FIP_IMAGE_ID] = { 58 &mmap_dev_handle, 59 (uintptr_t)&loader_fip_spec, 60 open_mmap 61 }, 62 [BL2_IMAGE_ID] = { 63 &fip_dev_handle, 64 (uintptr_t)&bl2_uuid_spec, 65 open_fip 66 }, 67 [BL31_IMAGE_ID] = { 68 &fip_dev_handle, 69 (uintptr_t)&bl31_uuid_spec, 70 open_fip 71 }, 72 [BL33_IMAGE_ID] = { 73 &fip_dev_handle, 74 (uintptr_t)&bl33_uuid_spec, 75 open_fip 76 }, 77 }; 78 79 static int open_mmap(const uintptr_t spec) 80 { 81 int result; 82 uintptr_t local_image_handle; 83 84 result = io_dev_init(mmap_dev_handle, (uintptr_t)NULL); 85 if (result == 0) { 86 result = io_open(mmap_dev_handle, spec, &local_image_handle); 87 if (result == 0) { 88 io_close(local_image_handle); 89 } 90 } 91 return result; 92 } 93 94 static int open_fip(const uintptr_t spec) 95 { 96 uintptr_t local_image_handle; 97 int result; 98 99 result = io_dev_init(fip_dev_handle, (uintptr_t) FIP_IMAGE_ID); 100 if (result == 0) { 101 result = io_open(fip_dev_handle, spec, &local_image_handle); 102 if (result == 0) { 103 io_close(local_image_handle); 104 } else { 105 VERBOSE("error opening fip\n"); 106 } 107 } else { 108 VERBOSE("error initializing fip\n"); 109 } 110 111 return result; 112 } 113 114 int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle, 115 uintptr_t *image_spec) 116 { 117 const struct plat_io_policy *policy; 118 int result; 119 120 assert(image_id < ARRAY_SIZE(policies)); 121 122 policy = &policies[image_id]; 123 result = policy->check(policy->image_spec); 124 assert(result == 0); 125 126 *image_spec = policy->image_spec; 127 *dev_handle = *(policy->dev_handle); 128 129 return result; 130 } 131 132 void plat_io_setup(void) 133 { 134 int result; 135 136 result = register_io_dev_memmap(&mmap_dev_con); 137 assert(result == 0); 138 139 result = register_io_dev_fip(&fip_dev_con); 140 assert(result == 0); 141 142 result = io_dev_open(fip_dev_con, (uintptr_t)&loader_fip_spec, 143 &fip_dev_handle); 144 assert(result == 0); 145 146 result = io_dev_open(mmap_dev_con, (uintptr_t)NULL, &mmap_dev_handle); 147 assert(result == 0); 148 149 (void) result; 150 } 151
