diff options
Diffstat (limited to 'plat/imx/common/imx_io_storage.c')
| -rw-r--r-- | plat/imx/common/imx_io_storage.c | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/plat/imx/common/imx_io_storage.c b/plat/imx/common/imx_io_storage.c new file mode 100644 index 0000000..bb35662 --- /dev/null +++ b/plat/imx/common/imx_io_storage.c @@ -0,0 +1,301 @@ +/* + * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> + +#include <common/debug.h> +#include <drivers/io/io_block.h> +#include <drivers/io/io_driver.h> +#include <drivers/io/io_fip.h> +#include <drivers/io/io_memmap.h> +#include <drivers/mmc.h> +#include <lib/utils_def.h> +#include <tbbr_img_def.h> +#include <tools_share/firmware_image_package.h> + +#include <platform_def.h> + +static const io_dev_connector_t *fip_dev_con; +static uintptr_t fip_dev_handle; + +#ifndef IMX_FIP_MMAP +static const io_dev_connector_t *mmc_dev_con; +static uintptr_t mmc_dev_handle; + +static const io_block_spec_t mmc_fip_spec = { + .offset = IMX_FIP_MMC_BASE, + .length = IMX_FIP_SIZE +}; + +static const io_block_dev_spec_t mmc_dev_spec = { + /* It's used as temp buffer in block driver. */ + .buffer = { + .offset = IMX_FIP_BASE, + /* do we need a new value? */ + .length = IMX_FIP_SIZE + }, + .ops = { + .read = mmc_read_blocks, + .write = mmc_write_blocks, + }, + .block_size = MMC_BLOCK_SIZE, +}; + +static int open_mmc(const uintptr_t spec); + +#else +static const io_dev_connector_t *memmap_dev_con; +static uintptr_t memmap_dev_handle; + +static const io_block_spec_t fip_block_spec = { + .offset = IMX_FIP_BASE, + .length = IMX_FIP_SIZE +}; +static int open_memmap(const uintptr_t spec); +#endif + +static int open_fip(const uintptr_t spec); + +static const io_uuid_spec_t bl31_uuid_spec = { + .uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31, +}; + +static const io_uuid_spec_t bl32_uuid_spec = { + .uuid = UUID_SECURE_PAYLOAD_BL32, +}; + +static const io_uuid_spec_t bl32_extra1_uuid_spec = { + .uuid = UUID_SECURE_PAYLOAD_BL32_EXTRA1, +}; + +static const io_uuid_spec_t bl32_extra2_uuid_spec = { + .uuid = UUID_SECURE_PAYLOAD_BL32_EXTRA2, +}; + +static const io_uuid_spec_t bl33_uuid_spec = { + .uuid = UUID_NON_TRUSTED_FIRMWARE_BL33, +}; + +#if TRUSTED_BOARD_BOOT +static const io_uuid_spec_t tb_fw_cert_uuid_spec = { + .uuid = UUID_TRUSTED_BOOT_FW_CERT, +}; + +static const io_uuid_spec_t trusted_key_cert_uuid_spec = { + .uuid = UUID_TRUSTED_KEY_CERT, +}; + +static const io_uuid_spec_t soc_fw_key_cert_uuid_spec = { + .uuid = UUID_SOC_FW_KEY_CERT, +}; + +static const io_uuid_spec_t tos_fw_key_cert_uuid_spec = { + .uuid = UUID_TRUSTED_OS_FW_KEY_CERT, +}; + +static const io_uuid_spec_t tos_fw_cert_uuid_spec = { + .uuid = UUID_TRUSTED_OS_FW_CONTENT_CERT, +}; + +static const io_uuid_spec_t soc_fw_content_cert_uuid_spec = { + .uuid = UUID_SOC_FW_CONTENT_CERT, +}; + +static const io_uuid_spec_t nt_fw_key_cert_uuid_spec = { + .uuid = UUID_NON_TRUSTED_FW_KEY_CERT, +}; + +static const io_uuid_spec_t nt_fw_cert_uuid_spec = { + .uuid = UUID_NON_TRUSTED_FW_CONTENT_CERT, +}; +#endif /* TRUSTED_BOARD_BOOT */ + +/* TODO: this structure is replicated multiple times. rationalize it ! */ +struct plat_io_policy { + uintptr_t *dev_handle; + uintptr_t image_spec; + int (*check)(const uintptr_t spec); +}; + +static const struct plat_io_policy policies[] = { +#ifndef IMX_FIP_MMAP + [FIP_IMAGE_ID] = { + &mmc_dev_handle, + (uintptr_t)&mmc_fip_spec, + open_mmc + }, +#else + [FIP_IMAGE_ID] = { + &memmap_dev_handle, + (uintptr_t)&fip_block_spec, + open_memmap + }, +#endif + [BL31_IMAGE_ID] = { + &fip_dev_handle, + (uintptr_t)&bl31_uuid_spec, + open_fip + }, + [BL32_IMAGE_ID] = { + &fip_dev_handle, + (uintptr_t)&bl32_uuid_spec, + open_fip + }, + [BL32_EXTRA1_IMAGE_ID] = { + &fip_dev_handle, + (uintptr_t)&bl32_extra1_uuid_spec, + open_fip + }, + [BL32_EXTRA2_IMAGE_ID] = { + &fip_dev_handle, + (uintptr_t)&bl32_extra2_uuid_spec, + open_fip + }, + [BL33_IMAGE_ID] = { + &fip_dev_handle, + (uintptr_t)&bl33_uuid_spec, + open_fip + }, +#if TRUSTED_BOARD_BOOT + [TRUSTED_BOOT_FW_CERT_ID] = { + &fip_dev_handle, + (uintptr_t)&tb_fw_cert_uuid_spec, + open_fip + }, + [SOC_FW_KEY_CERT_ID] = { + &fip_dev_handle, + (uintptr_t)&soc_fw_key_cert_uuid_spec, + open_fip + }, + [TRUSTED_KEY_CERT_ID] = { + &fip_dev_handle, + (uintptr_t)&trusted_key_cert_uuid_spec, + open_fip + }, + [TRUSTED_OS_FW_KEY_CERT_ID] = { + &fip_dev_handle, + (uintptr_t)&tos_fw_key_cert_uuid_spec, + open_fip + }, + [NON_TRUSTED_FW_KEY_CERT_ID] = { + &fip_dev_handle, + (uintptr_t)&nt_fw_key_cert_uuid_spec, + open_fip + }, + [SOC_FW_CONTENT_CERT_ID] = { + &fip_dev_handle, + (uintptr_t)&soc_fw_content_cert_uuid_spec, + open_fip + }, + [TRUSTED_OS_FW_CONTENT_CERT_ID] = { + &fip_dev_handle, + (uintptr_t)&tos_fw_cert_uuid_spec, + open_fip + }, + [NON_TRUSTED_FW_CONTENT_CERT_ID] = { + &fip_dev_handle, + (uintptr_t)&nt_fw_cert_uuid_spec, + open_fip + }, +#endif /* TRUSTED_BOARD_BOOT */ +}; + +static int open_fip(const uintptr_t spec) +{ + int result; + uintptr_t local_image_handle; + + /* See if a Firmware Image Package is available */ + result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID); + if (result == 0) { + result = io_open(fip_dev_handle, spec, &local_image_handle); + if (result == 0) { + VERBOSE("Using FIP\n"); + io_close(local_image_handle); + } + } + return result; +} + +#ifndef IMX_FIP_MMAP +static int open_mmc(const uintptr_t spec) +{ + int result; + uintptr_t local_handle; + + result = io_dev_init(mmc_dev_handle, (uintptr_t)NULL); + if (result == 0) { + result = io_open(mmc_dev_handle, spec, &local_handle); + if (result == 0) { + io_close(local_handle); + } + } + return result; +} +#else +static int open_memmap(const uintptr_t spec) +{ + int result; + uintptr_t local_image_handle; + + result = io_dev_init(memmap_dev_handle, (uintptr_t)NULL); + if (result == 0) { + result = io_open(memmap_dev_handle, spec, &local_image_handle); + if (result == 0) { + VERBOSE("Using Memmap\n"); + io_close(local_image_handle); + } + } + return result; +} +#endif + +int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle, + uintptr_t *image_spec) +{ + int result; + const struct plat_io_policy *policy; + + assert(image_id < ARRAY_SIZE(policies)); + + policy = &policies[image_id]; + result = policy->check(policy->image_spec); + assert(result == 0); + + *image_spec = policy->image_spec; + *dev_handle = *policy->dev_handle; + + return result; +} + +void plat_imx_io_setup(void) +{ + int result __unused; + +#ifndef IMX_FIP_MMAP + result = register_io_dev_block(&mmc_dev_con); + assert(result == 0); + + result = io_dev_open(mmc_dev_con, (uintptr_t)&mmc_dev_spec, + &mmc_dev_handle); + assert(result == 0); + +#else + result = register_io_dev_memmap(&memmap_dev_con); + assert(result == 0); + + result = io_dev_open(memmap_dev_con, (uintptr_t)NULL, + &memmap_dev_handle); + assert(result == 0); +#endif + + result = register_io_dev_fip(&fip_dev_con); + assert(result == 0); + + result = io_dev_open(fip_dev_con, (uintptr_t)NULL, + &fip_dev_handle); + assert(result == 0); +} |