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arm-trusted-firmware/plat/arm/common/fconf/arm_fconf_io.c
Ruari Phipps 0d4120d87e SPM: Get rid of uint32_t array representation of UUID 
UUID's in the device tree files were stored in little endian. So
to keep all entries in these files RFC 4122 compliant, store them in
big endian then convert it to little endian when they are read so they
can be used in the UUID data structure.

Signed-off-by: Ruari Phipps <ruari.phipps@arm.com>
Change-Id: I5674159b82b245104381df10a4e3291160d9b3b5
2020-09-10 09:29:54 +01:00

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/*
* Copyright (c) 2019-2020, ARM Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/debug.h>
#include <common/fdt_wrappers.h>
#include <drivers/io/io_storage.h>
#include <lib/object_pool.h>
#include <libfdt.h>
#include <tools_share/firmware_image_package.h>
#include <plat/arm/common/arm_fconf_getter.h>
#include <plat/arm/common/arm_fconf_io_storage.h>
#include <platform_def.h>
const io_block_spec_t fip_block_spec = {
.offset = PLAT_ARM_FIP_BASE,
.length = PLAT_ARM_FIP_MAX_SIZE
};
const io_uuid_spec_t arm_uuid_spec[MAX_NUMBER_IDS] = {
[BL2_IMAGE_ID] = {UUID_TRUSTED_BOOT_FIRMWARE_BL2},
[TB_FW_CONFIG_ID] = {UUID_TB_FW_CONFIG},
[FW_CONFIG_ID] = {UUID_FW_CONFIG},
#if !ARM_IO_IN_DTB
[SCP_BL2_IMAGE_ID] = {UUID_SCP_FIRMWARE_SCP_BL2},
[BL31_IMAGE_ID] = {UUID_EL3_RUNTIME_FIRMWARE_BL31},
[BL32_IMAGE_ID] = {UUID_SECURE_PAYLOAD_BL32},
[BL32_EXTRA1_IMAGE_ID] = {UUID_SECURE_PAYLOAD_BL32_EXTRA1},
[BL32_EXTRA2_IMAGE_ID] = {UUID_SECURE_PAYLOAD_BL32_EXTRA2},
[BL33_IMAGE_ID] = {UUID_NON_TRUSTED_FIRMWARE_BL33},
[HW_CONFIG_ID] = {UUID_HW_CONFIG},
[SOC_FW_CONFIG_ID] = {UUID_SOC_FW_CONFIG},
[TOS_FW_CONFIG_ID] = {UUID_TOS_FW_CONFIG},
[NT_FW_CONFIG_ID] = {UUID_NT_FW_CONFIG},
#endif /* ARM_IO_IN_DTB */
#if TRUSTED_BOARD_BOOT
[TRUSTED_BOOT_FW_CERT_ID] = {UUID_TRUSTED_BOOT_FW_CERT},
#if !ARM_IO_IN_DTB
[TRUSTED_KEY_CERT_ID] = {UUID_TRUSTED_KEY_CERT},
[SCP_FW_KEY_CERT_ID] = {UUID_SCP_FW_KEY_CERT},
[SOC_FW_KEY_CERT_ID] = {UUID_SOC_FW_KEY_CERT},
[TRUSTED_OS_FW_KEY_CERT_ID] = {UUID_TRUSTED_OS_FW_KEY_CERT},
[NON_TRUSTED_FW_KEY_CERT_ID] = {UUID_NON_TRUSTED_FW_KEY_CERT},
[SCP_FW_CONTENT_CERT_ID] = {UUID_SCP_FW_CONTENT_CERT},
[SOC_FW_CONTENT_CERT_ID] = {UUID_SOC_FW_CONTENT_CERT},
[TRUSTED_OS_FW_CONTENT_CERT_ID] = {UUID_TRUSTED_OS_FW_CONTENT_CERT},
[NON_TRUSTED_FW_CONTENT_CERT_ID] = {UUID_NON_TRUSTED_FW_CONTENT_CERT},
#if defined(SPD_spmd)
[SIP_SP_CONTENT_CERT_ID] = {UUID_SIP_SECURE_PARTITION_CONTENT_CERT},
[PLAT_SP_CONTENT_CERT_ID] = {UUID_PLAT_SECURE_PARTITION_CONTENT_CERT},
#endif
#endif /* ARM_IO_IN_DTB */
#endif /* TRUSTED_BOARD_BOOT */
};
/* By default, ARM platforms load images from the FIP */
struct plat_io_policy policies[MAX_NUMBER_IDS] = {
[FIP_IMAGE_ID] = {
&memmap_dev_handle,
(uintptr_t)&fip_block_spec,
open_memmap
},
[BL2_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[BL2_IMAGE_ID],
open_fip
},
[TB_FW_CONFIG_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[TB_FW_CONFIG_ID],
open_fip
},
[FW_CONFIG_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[FW_CONFIG_ID],
open_fip
},
#if !ARM_IO_IN_DTB
[SCP_BL2_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[SCP_BL2_IMAGE_ID],
open_fip
},
[BL31_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[BL31_IMAGE_ID],
open_fip
},
[BL32_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[BL32_IMAGE_ID],
open_fip
},
[BL32_EXTRA1_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[BL32_EXTRA1_IMAGE_ID],
open_fip
},
[BL32_EXTRA2_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[BL32_EXTRA2_IMAGE_ID],
open_fip
},
[BL33_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[BL33_IMAGE_ID],
open_fip
},
[HW_CONFIG_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[HW_CONFIG_ID],
open_fip
},
[SOC_FW_CONFIG_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[SOC_FW_CONFIG_ID],
open_fip
},
[TOS_FW_CONFIG_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[TOS_FW_CONFIG_ID],
open_fip
},
[NT_FW_CONFIG_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[NT_FW_CONFIG_ID],
open_fip
},
#endif /* ARM_IO_IN_DTB */
#if TRUSTED_BOARD_BOOT
[TRUSTED_BOOT_FW_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[TRUSTED_BOOT_FW_CERT_ID],
open_fip
},
#if !ARM_IO_IN_DTB
[TRUSTED_KEY_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[TRUSTED_KEY_CERT_ID],
open_fip
},
[SCP_FW_KEY_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[SCP_FW_KEY_CERT_ID],
open_fip
},
[SOC_FW_KEY_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[SOC_FW_KEY_CERT_ID],
open_fip
},
[TRUSTED_OS_FW_KEY_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[TRUSTED_OS_FW_KEY_CERT_ID],
open_fip
},
[NON_TRUSTED_FW_KEY_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[NON_TRUSTED_FW_KEY_CERT_ID],
open_fip
},
[SCP_FW_CONTENT_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[SCP_FW_CONTENT_CERT_ID],
open_fip
},
[SOC_FW_CONTENT_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[SOC_FW_CONTENT_CERT_ID],
open_fip
},
[TRUSTED_OS_FW_CONTENT_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[TRUSTED_OS_FW_CONTENT_CERT_ID],
open_fip
},
[NON_TRUSTED_FW_CONTENT_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[NON_TRUSTED_FW_CONTENT_CERT_ID],
open_fip
},
#if defined(SPD_spmd)
[SIP_SP_CONTENT_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[SIP_SP_CONTENT_CERT_ID],
open_fip
},
[PLAT_SP_CONTENT_CERT_ID] = {
&fip_dev_handle,
(uintptr_t)&arm_uuid_spec[PLAT_SP_CONTENT_CERT_ID],
open_fip
},
#endif
#endif /* ARM_IO_IN_DTB */
#endif /* TRUSTED_BOARD_BOOT */
};
#ifdef IMAGE_BL2
#if TRUSTED_BOARD_BOOT
#define FCONF_ARM_IO_UUID_NUMBER U(21)
#else
#define FCONF_ARM_IO_UUID_NUMBER U(10)
#endif
static io_uuid_spec_t fconf_arm_uuids[FCONF_ARM_IO_UUID_NUMBER];
static OBJECT_POOL_ARRAY(fconf_arm_uuids_pool, fconf_arm_uuids);
struct policies_load_info {
unsigned int image_id;
const char *name;
};
/* image id to property name table */
static const struct policies_load_info load_info[FCONF_ARM_IO_UUID_NUMBER] = {
{SCP_BL2_IMAGE_ID, "scp_bl2_uuid"},
{BL31_IMAGE_ID, "bl31_uuid"},
{BL32_IMAGE_ID, "bl32_uuid"},
{BL32_EXTRA1_IMAGE_ID, "bl32_extra1_uuid"},
{BL32_EXTRA2_IMAGE_ID, "bl32_extra2_uuid"},
{BL33_IMAGE_ID, "bl33_uuid"},
{HW_CONFIG_ID, "hw_cfg_uuid"},
{SOC_FW_CONFIG_ID, "soc_fw_cfg_uuid"},
{TOS_FW_CONFIG_ID, "tos_fw_cfg_uuid"},
{NT_FW_CONFIG_ID, "nt_fw_cfg_uuid"},
#if TRUSTED_BOARD_BOOT
{TRUSTED_KEY_CERT_ID, "t_key_cert_uuid"},
{SCP_FW_KEY_CERT_ID, "scp_fw_key_uuid"},
{SOC_FW_KEY_CERT_ID, "soc_fw_key_uuid"},
{TRUSTED_OS_FW_KEY_CERT_ID, "tos_fw_key_cert_uuid"},
{NON_TRUSTED_FW_KEY_CERT_ID, "nt_fw_key_cert_uuid"},
{SCP_FW_CONTENT_CERT_ID, "scp_fw_content_cert_uuid"},
{SOC_FW_CONTENT_CERT_ID, "soc_fw_content_cert_uuid"},
{TRUSTED_OS_FW_CONTENT_CERT_ID, "tos_fw_content_cert_uuid"},
{NON_TRUSTED_FW_CONTENT_CERT_ID, "nt_fw_content_cert_uuid"},
#if defined(SPD_spmd)
{SIP_SP_CONTENT_CERT_ID, "sip_sp_content_cert_uuid"},
{PLAT_SP_CONTENT_CERT_ID, "plat_sp_content_cert_uuid"},
#endif
#endif /* TRUSTED_BOARD_BOOT */
};
int fconf_populate_arm_io_policies(uintptr_t config)
{
int err, node;
unsigned int i;
unsigned int j;
union uuid_helper_t uuid_helper;
io_uuid_spec_t *uuid_ptr;
/* As libfdt uses void *, we can't avoid this cast */
const void *dtb = (void *)config;
/* Assert the node offset point to "arm,io-fip-handle" compatible property */
const char *compatible_str = "arm,io-fip-handle";
node = fdt_node_offset_by_compatible(dtb, -1, compatible_str);
if (node < 0) {
ERROR("FCONF: Can't find %s compatible in dtb\n", compatible_str);
return node;
}
/* Locate the uuid cells and read the value for all the load info uuid */
for (i = 0; i < FCONF_ARM_IO_UUID_NUMBER; i++) {
uuid_ptr = pool_alloc(&fconf_arm_uuids_pool);
err = fdt_read_uint32_array(dtb, node, load_info[i].name,
4, uuid_helper.word);
if (err < 0) {
WARN("FCONF: Read cell failed for %s\n", load_info[i].name);
return err;
}
/* Convert uuid from big endian to little endian */
for (j = 0U; j < 4U; j++) {
uuid_helper.word[j] =
((uuid_helper.word[j] >> 24U) & 0xff) |
((uuid_helper.word[j] << 8U) & 0xff0000) |
((uuid_helper.word[j] >> 8U) & 0xff00) |
((uuid_helper.word[j] << 24U) & 0xff000000);
}
VERBOSE("FCONF: arm-io_policies.%s cell found with value = 0x%x 0x%x 0x%x 0x%x\n",
load_info[i].name,
uuid_helper.word[0], uuid_helper.word[1],
uuid_helper.word[2], uuid_helper.word[3]);
uuid_ptr->uuid = uuid_helper.uuid_struct;
policies[load_info[i].image_id].image_spec = (uintptr_t)uuid_ptr;
policies[load_info[i].image_id].dev_handle = &fip_dev_handle;
policies[load_info[i].image_id].check = open_fip;
}
return 0;
}
#if ARM_IO_IN_DTB
FCONF_REGISTER_POPULATOR(TB_FW, arm_io, fconf_populate_arm_io_policies);
#endif /* ARM_IO_IN_DTB */
#endif /* IMAGE_BL2 */
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