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 <errno.h> 11 #include <firmware_image_package.h> 12 #include <io_block.h> 13 #include <io_driver.h> 14 #include <io_fip.h> 15 #include <io_memmap.h> 16 #include <io_storage.h> 17 #include <mmio.h> 18 #include <platform_def.h> 19 #include <semihosting.h> /* For FOPEN_MODE_... */ 20 #include <string.h> 21 #include <ufs.h> 22 23 struct plat_io_policy { 24 uintptr_t *dev_handle; 25 uintptr_t image_spec; 26 int (*check)(const uintptr_t spec); 27 }; 28 29 static const io_dev_connector_t *ufs_dev_con, *fip_dev_con; 30 static uintptr_t ufs_dev_handle, fip_dev_handle; 31 32 static int check_ufs(const uintptr_t spec); 33 static int check_fip(const uintptr_t spec); 34 size_t ufs_read_lun3_blks(int lba, uintptr_t buf, size_t size); 35 size_t ufs_write_lun3_blks(int lba, const uintptr_t buf, size_t size); 36 37 static const io_block_spec_t ufs_fip_spec = { 38 .offset = HIKEY960_FIP_BASE, 39 .length = HIKEY960_FIP_MAX_SIZE, 40 }; 41 42 static const io_block_spec_t ufs_data_spec = { 43 .offset = 0, 44 .length = 256 << 20, 45 }; 46 47 static const io_block_dev_spec_t ufs_dev_spec = { 48 /* It's used as temp buffer in block driver. */ 49 .buffer = { 50 .offset = HIKEY960_UFS_DATA_BASE, 51 .length = HIKEY960_UFS_DATA_SIZE, 52 }, 53 .ops = { 54 .read = ufs_read_lun3_blks, 55 .write = ufs_write_lun3_blks, 56 }, 57 .block_size = UFS_BLOCK_SIZE, 58 }; 59 60 static const io_uuid_spec_t bl2_uuid_spec = { 61 .uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2, 62 }; 63 64 static const io_uuid_spec_t scp_bl2_uuid_spec = { 65 .uuid = UUID_SCP_FIRMWARE_SCP_BL2, 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 bl33_uuid_spec = { 73 .uuid = UUID_NON_TRUSTED_FIRMWARE_BL33, 74 }; 75 76 static const struct plat_io_policy policies[] = { 77 [FIP_IMAGE_ID] = { 78 &ufs_dev_handle, 79 (uintptr_t)&ufs_fip_spec, 80 check_ufs 81 }, 82 [BL2_IMAGE_ID] = { 83 &fip_dev_handle, 84 (uintptr_t)&bl2_uuid_spec, 85 check_fip 86 }, 87 [SCP_BL2_IMAGE_ID] = { 88 &fip_dev_handle, 89 (uintptr_t)&scp_bl2_uuid_spec, 90 check_fip 91 }, 92 [BL31_IMAGE_ID] = { 93 &fip_dev_handle, 94 (uintptr_t)&bl31_uuid_spec, 95 check_fip 96 }, 97 [BL33_IMAGE_ID] = { 98 &fip_dev_handle, 99 (uintptr_t)&bl33_uuid_spec, 100 check_fip 101 }, 102 [BL2U_IMAGE_ID] = { 103 &ufs_dev_handle, 104 (uintptr_t)&ufs_data_spec, 105 check_ufs 106 } 107 }; 108 109 static int check_ufs(const uintptr_t spec) 110 { 111 int result; 112 uintptr_t local_handle; 113 114 result = io_dev_init(ufs_dev_handle, (uintptr_t)NULL); 115 if (result == 0) { 116 result = io_open(ufs_dev_handle, spec, &local_handle); 117 if (result == 0) 118 io_close(local_handle); 119 } 120 return result; 121 } 122 123 static int check_fip(const uintptr_t spec) 124 { 125 int result; 126 uintptr_t local_image_handle; 127 128 /* See if a Firmware Image Package is available */ 129 result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID); 130 if (result == 0) { 131 result = io_open(fip_dev_handle, spec, &local_image_handle); 132 if (result == 0) { 133 VERBOSE("Using FIP\n"); 134 io_close(local_image_handle); 135 } 136 } 137 return result; 138 } 139 140 void hikey960_io_setup(void) 141 { 142 int result; 143 144 result = register_io_dev_block(&ufs_dev_con); 145 assert(result == 0); 146 147 result = register_io_dev_fip(&fip_dev_con); 148 assert(result == 0); 149 150 result = io_dev_open(ufs_dev_con, (uintptr_t)&ufs_dev_spec, 151 &ufs_dev_handle); 152 assert(result == 0); 153 154 result = io_dev_open(fip_dev_con, (uintptr_t)NULL, &fip_dev_handle); 155 assert(result == 0); 156 157 /* Ignore improbable errors in release builds */ 158 (void)result; 159 } 160 161 /* Return an IO device handle and specification which can be used to access 162 * an image. Use this to enforce platform load policy 163 */ 164 int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle, 165 uintptr_t *image_spec) 166 { 167 int result; 168 const struct plat_io_policy *policy; 169 170 assert(image_id < ARRAY_SIZE(policies)); 171 172 policy = &policies[image_id]; 173 result = policy->check(policy->image_spec); 174 assert(result == 0); 175 176 *image_spec = policy->image_spec; 177 *dev_handle = *(policy->dev_handle); 178 179 return result; 180 } 181 182 size_t ufs_read_lun3_blks(int lba, uintptr_t buf, size_t size) 183 { 184 return ufs_read_blocks(3, lba, buf, size); 185 } 186 187 size_t ufs_write_lun3_blks(int lba, const uintptr_t buf, size_t size) 188 { 189 return ufs_write_blocks(3, lba, buf, size); 190 } 191