1 /* 2 * Copyright (c) 2017-2018, 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 <emmc.h> 11 #include <errno.h> 12 #include <firmware_image_package.h> 13 #include <io_block.h> 14 #include <io_driver.h> 15 #include <io_fip.h> 16 #include <io_memmap.h> 17 #include <io_storage.h> 18 #include <mmio.h> 19 #include <platform_def.h> 20 #include <semihosting.h> /* For FOPEN_MODE_... */ 21 #include <string.h> 22 #include "hikey_private.h" 23 24 #define EMMC_BLOCK_SHIFT 9 25 26 /* Page 1024, since only a few pages before 2048 are used as partition table */ 27 #define SERIALNO_EMMC_OFFSET (1024 * 512) 28 29 struct plat_io_policy { 30 uintptr_t *dev_handle; 31 uintptr_t image_spec; 32 int (*check)(const uintptr_t spec); 33 }; 34 35 static const io_dev_connector_t *emmc_dev_con; 36 static uintptr_t emmc_dev_handle; 37 static const io_dev_connector_t *fip_dev_con; 38 static uintptr_t fip_dev_handle; 39 40 static int check_emmc(const uintptr_t spec); 41 static int check_fip(const uintptr_t spec); 42 43 static const io_block_spec_t emmc_fip_spec = { 44 .offset = HIKEY_FIP_BASE, 45 .length = HIKEY_FIP_MAX_SIZE, 46 }; 47 48 static const io_block_dev_spec_t emmc_dev_spec = { 49 /* It's used as temp buffer in block driver. */ 50 #ifdef IMAGE_BL1 51 .buffer = { 52 .offset = HIKEY_BL1_MMC_DATA_BASE, 53 .length = HIKEY_BL1_MMC_DATA_SIZE, 54 }, 55 #else 56 .buffer = { 57 .offset = HIKEY_MMC_DATA_BASE, 58 .length = HIKEY_MMC_DATA_SIZE, 59 }, 60 #endif 61 .ops = { 62 .read = emmc_read_blocks, 63 .write = emmc_write_blocks, 64 }, 65 .block_size = EMMC_BLOCK_SIZE, 66 }; 67 68 static const io_uuid_spec_t bl31_uuid_spec = { 69 .uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31, 70 }; 71 72 static const io_uuid_spec_t bl32_uuid_spec = { 73 .uuid = UUID_SECURE_PAYLOAD_BL32, 74 }; 75 76 static const io_uuid_spec_t bl32_extra1_uuid_spec = { 77 .uuid = UUID_SECURE_PAYLOAD_BL32_EXTRA1, 78 }; 79 80 static const io_uuid_spec_t bl32_extra2_uuid_spec = { 81 .uuid = UUID_SECURE_PAYLOAD_BL32_EXTRA2, 82 }; 83 84 static const io_uuid_spec_t bl33_uuid_spec = { 85 .uuid = UUID_NON_TRUSTED_FIRMWARE_BL33, 86 }; 87 88 static const io_uuid_spec_t scp_bl2_uuid_spec = { 89 .uuid = UUID_SCP_FIRMWARE_SCP_BL2, 90 }; 91 92 static const struct plat_io_policy policies[] = { 93 [FIP_IMAGE_ID] = { 94 &emmc_dev_handle, 95 (uintptr_t)&emmc_fip_spec, 96 check_emmc 97 }, 98 [SCP_BL2_IMAGE_ID] = { 99 &fip_dev_handle, 100 (uintptr_t)&scp_bl2_uuid_spec, 101 check_fip 102 }, 103 [BL31_IMAGE_ID] = { 104 &fip_dev_handle, 105 (uintptr_t)&bl31_uuid_spec, 106 check_fip 107 }, 108 [BL32_IMAGE_ID] = { 109 &fip_dev_handle, 110 (uintptr_t)&bl32_uuid_spec, 111 check_fip 112 }, 113 [BL32_EXTRA1_IMAGE_ID] = { 114 &fip_dev_handle, 115 (uintptr_t)&bl32_extra1_uuid_spec, 116 check_fip 117 }, 118 [BL32_EXTRA2_IMAGE_ID] = { 119 &fip_dev_handle, 120 (uintptr_t)&bl32_extra2_uuid_spec, 121 check_fip 122 }, 123 [BL33_IMAGE_ID] = { 124 &fip_dev_handle, 125 (uintptr_t)&bl33_uuid_spec, 126 check_fip 127 } 128 }; 129 130 static int check_emmc(const uintptr_t spec) 131 { 132 int result; 133 uintptr_t local_handle; 134 135 result = io_dev_init(emmc_dev_handle, (uintptr_t)NULL); 136 if (result == 0) { 137 result = io_open(emmc_dev_handle, spec, &local_handle); 138 if (result == 0) 139 io_close(local_handle); 140 } 141 return result; 142 } 143 144 static int check_fip(const uintptr_t spec) 145 { 146 int result; 147 uintptr_t local_image_handle; 148 149 /* See if a Firmware Image Package is available */ 150 result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID); 151 if (result == 0) { 152 result = io_open(fip_dev_handle, spec, &local_image_handle); 153 if (result == 0) { 154 VERBOSE("Using FIP\n"); 155 io_close(local_image_handle); 156 } 157 } 158 return result; 159 } 160 161 void hikey_io_setup(void) 162 { 163 int result; 164 165 result = register_io_dev_block(&emmc_dev_con); 166 assert(result == 0); 167 168 result = register_io_dev_fip(&fip_dev_con); 169 assert(result == 0); 170 171 result = io_dev_open(emmc_dev_con, (uintptr_t)&emmc_dev_spec, 172 &emmc_dev_handle); 173 assert(result == 0); 174 175 result = io_dev_open(fip_dev_con, (uintptr_t)NULL, &fip_dev_handle); 176 assert(result == 0); 177 178 /* Ignore improbable errors in release builds */ 179 (void)result; 180 } 181 182 /* Return an IO device handle and specification which can be used to access 183 * an image. Use this to enforce platform load policy 184 */ 185 int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle, 186 uintptr_t *image_spec) 187 { 188 int result; 189 const struct plat_io_policy *policy; 190 191 assert(image_id < ARRAY_SIZE(policies)); 192 193 policy = &policies[image_id]; 194 result = policy->check(policy->image_spec); 195 assert(result == 0); 196 197 *image_spec = policy->image_spec; 198 *dev_handle = *(policy->dev_handle); 199 200 return result; 201 } 202