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 <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 #if 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 bl2_uuid_spec = { 69 .uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2, 70 }; 71 72 static const io_uuid_spec_t bl31_uuid_spec = { 73 .uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31, 74 }; 75 76 static const io_uuid_spec_t bl33_uuid_spec = { 77 .uuid = UUID_NON_TRUSTED_FIRMWARE_BL33, 78 }; 79 80 static const io_uuid_spec_t scp_bl2_uuid_spec = { 81 .uuid = UUID_SCP_FIRMWARE_SCP_BL2, 82 }; 83 84 static const struct plat_io_policy policies[] = { 85 [FIP_IMAGE_ID] = { 86 &emmc_dev_handle, 87 (uintptr_t)&emmc_fip_spec, 88 check_emmc 89 }, 90 [BL2_IMAGE_ID] = { 91 &fip_dev_handle, 92 (uintptr_t)&bl2_uuid_spec, 93 check_fip 94 }, 95 [SCP_BL2_IMAGE_ID] = { 96 &fip_dev_handle, 97 (uintptr_t)&scp_bl2_uuid_spec, 98 check_fip 99 }, 100 [BL31_IMAGE_ID] = { 101 &fip_dev_handle, 102 (uintptr_t)&bl31_uuid_spec, 103 check_fip 104 }, 105 [BL33_IMAGE_ID] = { 106 &fip_dev_handle, 107 (uintptr_t)&bl33_uuid_spec, 108 check_fip 109 } 110 }; 111 112 static int check_emmc(const uintptr_t spec) 113 { 114 int result; 115 uintptr_t local_handle; 116 117 result = io_dev_init(emmc_dev_handle, (uintptr_t)NULL); 118 if (result == 0) { 119 result = io_open(emmc_dev_handle, spec, &local_handle); 120 if (result == 0) 121 io_close(local_handle); 122 } 123 return result; 124 } 125 126 static int check_fip(const uintptr_t spec) 127 { 128 int result; 129 uintptr_t local_image_handle; 130 131 /* See if a Firmware Image Package is available */ 132 result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID); 133 if (result == 0) { 134 result = io_open(fip_dev_handle, spec, &local_image_handle); 135 if (result == 0) { 136 VERBOSE("Using FIP\n"); 137 io_close(local_image_handle); 138 } 139 } 140 return result; 141 } 142 143 void hikey_io_setup(void) 144 { 145 int result; 146 147 result = register_io_dev_block(&emmc_dev_con); 148 assert(result == 0); 149 150 result = register_io_dev_fip(&fip_dev_con); 151 assert(result == 0); 152 153 result = io_dev_open(emmc_dev_con, (uintptr_t)&emmc_dev_spec, 154 &emmc_dev_handle); 155 assert(result == 0); 156 157 result = io_dev_open(fip_dev_con, (uintptr_t)NULL, &fip_dev_handle); 158 assert(result == 0); 159 160 /* Ignore improbable errors in release builds */ 161 (void)result; 162 } 163 164 /* Return an IO device handle and specification which can be used to access 165 * an image. Use this to enforce platform load policy 166 */ 167 int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle, 168 uintptr_t *image_spec) 169 { 170 int result; 171 const struct plat_io_policy *policy; 172 173 assert(image_id < ARRAY_SIZE(policies)); 174 175 policy = &policies[image_id]; 176 result = policy->check(policy->image_spec); 177 assert(result == 0); 178 179 *image_spec = policy->image_spec; 180 *dev_handle = *(policy->dev_handle); 181 182 return result; 183 } 184