Haojian Zhuang | 08b167e | 2017-05-24 08:45:05 +0800 | [diff] [blame] | 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 | |
Victor Chong | 3b6e88a | 2017-05-28 00:14:25 +0900 | [diff] [blame^] | 76 | static const io_uuid_spec_t bl32_uuid_spec = { |
| 77 | .uuid = UUID_SECURE_PAYLOAD_BL32, |
| 78 | }; |
| 79 | |
Haojian Zhuang | 08b167e | 2017-05-24 08:45:05 +0800 | [diff] [blame] | 80 | static const io_uuid_spec_t bl33_uuid_spec = { |
| 81 | .uuid = UUID_NON_TRUSTED_FIRMWARE_BL33, |
| 82 | }; |
| 83 | |
| 84 | static const io_uuid_spec_t scp_bl2_uuid_spec = { |
| 85 | .uuid = UUID_SCP_FIRMWARE_SCP_BL2, |
| 86 | }; |
| 87 | |
| 88 | static const struct plat_io_policy policies[] = { |
| 89 | [FIP_IMAGE_ID] = { |
| 90 | &emmc_dev_handle, |
| 91 | (uintptr_t)&emmc_fip_spec, |
| 92 | check_emmc |
| 93 | }, |
| 94 | [BL2_IMAGE_ID] = { |
| 95 | &fip_dev_handle, |
| 96 | (uintptr_t)&bl2_uuid_spec, |
| 97 | check_fip |
| 98 | }, |
| 99 | [SCP_BL2_IMAGE_ID] = { |
| 100 | &fip_dev_handle, |
| 101 | (uintptr_t)&scp_bl2_uuid_spec, |
| 102 | check_fip |
| 103 | }, |
| 104 | [BL31_IMAGE_ID] = { |
| 105 | &fip_dev_handle, |
| 106 | (uintptr_t)&bl31_uuid_spec, |
| 107 | check_fip |
| 108 | }, |
Victor Chong | 3b6e88a | 2017-05-28 00:14:25 +0900 | [diff] [blame^] | 109 | [BL32_IMAGE_ID] = { |
| 110 | &fip_dev_handle, |
| 111 | (uintptr_t)&bl32_uuid_spec, |
| 112 | check_fip |
| 113 | }, |
Haojian Zhuang | 08b167e | 2017-05-24 08:45:05 +0800 | [diff] [blame] | 114 | [BL33_IMAGE_ID] = { |
| 115 | &fip_dev_handle, |
| 116 | (uintptr_t)&bl33_uuid_spec, |
| 117 | check_fip |
| 118 | } |
| 119 | }; |
| 120 | |
| 121 | static int check_emmc(const uintptr_t spec) |
| 122 | { |
| 123 | int result; |
| 124 | uintptr_t local_handle; |
| 125 | |
| 126 | result = io_dev_init(emmc_dev_handle, (uintptr_t)NULL); |
| 127 | if (result == 0) { |
| 128 | result = io_open(emmc_dev_handle, spec, &local_handle); |
| 129 | if (result == 0) |
| 130 | io_close(local_handle); |
| 131 | } |
| 132 | return result; |
| 133 | } |
| 134 | |
| 135 | static int check_fip(const uintptr_t spec) |
| 136 | { |
| 137 | int result; |
| 138 | uintptr_t local_image_handle; |
| 139 | |
| 140 | /* See if a Firmware Image Package is available */ |
| 141 | result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID); |
| 142 | if (result == 0) { |
| 143 | result = io_open(fip_dev_handle, spec, &local_image_handle); |
| 144 | if (result == 0) { |
| 145 | VERBOSE("Using FIP\n"); |
| 146 | io_close(local_image_handle); |
| 147 | } |
| 148 | } |
| 149 | return result; |
| 150 | } |
| 151 | |
| 152 | void hikey_io_setup(void) |
| 153 | { |
| 154 | int result; |
| 155 | |
| 156 | result = register_io_dev_block(&emmc_dev_con); |
| 157 | assert(result == 0); |
| 158 | |
| 159 | result = register_io_dev_fip(&fip_dev_con); |
| 160 | assert(result == 0); |
| 161 | |
| 162 | result = io_dev_open(emmc_dev_con, (uintptr_t)&emmc_dev_spec, |
| 163 | &emmc_dev_handle); |
| 164 | assert(result == 0); |
| 165 | |
| 166 | result = io_dev_open(fip_dev_con, (uintptr_t)NULL, &fip_dev_handle); |
| 167 | assert(result == 0); |
| 168 | |
| 169 | /* Ignore improbable errors in release builds */ |
| 170 | (void)result; |
| 171 | } |
| 172 | |
| 173 | /* Return an IO device handle and specification which can be used to access |
| 174 | * an image. Use this to enforce platform load policy |
| 175 | */ |
| 176 | int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle, |
| 177 | uintptr_t *image_spec) |
| 178 | { |
| 179 | int result; |
| 180 | const struct plat_io_policy *policy; |
| 181 | |
| 182 | assert(image_id < ARRAY_SIZE(policies)); |
| 183 | |
| 184 | policy = &policies[image_id]; |
| 185 | result = policy->check(policy->image_spec); |
| 186 | assert(result == 0); |
| 187 | |
| 188 | *image_spec = policy->image_spec; |
| 189 | *dev_handle = *(policy->dev_handle); |
| 190 | |
| 191 | return result; |
| 192 | } |