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Merge changes from topic "jc/tc_fw_handoff" into integration

Browse source 
* changes:
  refactor(arm): simplify early platform setup function in BL31
  refactor(arm): simplify early platform setup function in BL2
  feat(arm): add support for Transfer List creation
This commit is contained in:
Govindraj Raja 2025-03-31 20:33:44 +02:00 • committed by TrustedFirmware Code Review
commit c997a8deab
13 changed files with 45 additions and 66 deletions
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10
include/plat/arm/common/plat_arm.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2024, Arm Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2025, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -249,7 +249,8 @@ void arm_bl1_platform_setup(void);
void arm_bl1_plat_arch_setup(void);
/* BL2 utility functions */
void arm_bl2_early_platform_setup(uintptr_t fw_config, struct meminfo *mem_layout);
void arm_bl2_early_platform_setup(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3);
void arm_bl2_platform_setup(void);
void arm_bl2_plat_arch_setup(void);
uint32_t arm_get_spsr_for_bl32_entry(void);
@ -273,13 +274,8 @@ void arm_bl2u_platform_setup(void);
void arm_bl2u_plat_arch_setup(void);
/* BL31 utility functions */
#if TRANSFER_LIST
void arm_bl31_early_platform_setup(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3);
#else
void arm_bl31_early_platform_setup(void *from_bl2, uintptr_t soc_fw_config,
uintptr_t hw_config, void *plat_params_from_bl2);
#endif
void arm_bl31_platform_setup(void);
void arm_bl31_plat_runtime_setup(void);
void arm_bl31_plat_arch_setup(void);

4
plat/arm/board/a5ds/a5ds_bl2_setup.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2019, Arm Limited. All rights reserved.
* Copyright (c) 2019-2025, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -9,7 +9,7 @@
void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
arm_bl2_early_platform_setup((uintptr_t)arg0, (meminfo_t *)arg1);
arm_bl2_early_platform_setup(arg0, arg1, arg2, arg3);
}
void bl2_platform_setup(void)

5
plat/arm/board/fvp/fvp_bl2_setup.c
View file

@ -52,10 +52,7 @@ static const arm_gpt_info_t arm_gpt_info = {
void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_t arg2, u_register_t arg3)
{
#if TRANSFER_LIST
arg0 = arg3;
#endif
arm_bl2_early_platform_setup((uintptr_t)arg0, (meminfo_t *)arg1);
arm_bl2_early_platform_setup(arg0, arg1, arg2, arg3);
/* Initialize the platform config for future decision making */
fvp_config_setup();

13
plat/arm/board/fvp/fvp_bl31_setup.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2024, Arm Limited and Contributors. All rights reserved.
* Copyright (c) 2013-2025, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -28,10 +28,7 @@ void __init bl31_early_platform_setup2(u_register_t arg0,
/* Initialize the console to provide early debug support */
arm_console_boot_init();
#if TRANSFER_LIST
arm_bl31_early_platform_setup(arg0, arg1, arg2, arg3);
#else
#if !RESET_TO_BL31 && !RESET_TO_BL2
#if !(TRANSFER_LIST || RESET_TO_BL31 || RESET_TO_BL2)
const struct dyn_cfg_dtb_info_t *soc_fw_config_info;
INFO("BL31 FCONF: FW_CONFIG address = %lx\n", (uintptr_t)arg1);
@ -53,9 +50,9 @@ void __init bl31_early_platform_setup2(u_register_t arg0,
assert(hw_config_info != NULL);
assert(hw_config_info->secondary_config_addr != 0UL);
arg2 = hw_config_info->secondary_config_addr;
#endif /* !RESET_TO_BL31 && !RESET_TO_BL2 */
arm_bl31_early_platform_setup((void *)arg0, arg1, arg2, (void *)arg3);
#endif /* TRANSFER_LIST */
#endif /* !(TRANSFER_LIST || RESET_TO_BL31 || RESET_TO_BL2)*/
arm_bl31_early_platform_setup(arg0, arg1, arg2, arg3);
/* Initialize the platform config for future decision making */
fvp_config_setup();

1
plat/arm/board/fvp/platform.mk
View file

@ -433,7 +433,6 @@ endif
$(eval $(call TOOL_ADD_PAYLOAD,${FVP_HW_CONFIG},--hw-config,${FVP_HW_CONFIG}))
ifeq (${TRANSFER_LIST}, 1)
include lib/transfer_list/transfer_list.mk
ifeq ($(RESET_TO_BL31), 1)
FW_HANDOFF_SIZE := 20000

4
plat/arm/board/fvp_ve/fvp_ve_bl2_setup.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2019, Arm Limited. All rights reserved.
* Copyright (c) 2019-2025, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -15,7 +15,7 @@
void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_t arg2, u_register_t arg3)
{
arm_bl2_early_platform_setup((uintptr_t)arg0, (meminfo_t *)arg1);
arm_bl2_early_platform_setup(arg0, arg1, arg2, arg3);
/* Initialize the platform config for future decision making */
fvp_ve_config_setup();

4
plat/arm/board/juno/juno_bl31_setup.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2021, Arm Limited and Contributors. All rights reserved.
* Copyright (c) 2021-2025, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -27,7 +27,7 @@ void __init bl31_early_platform_setup2(u_register_t arg0,
arg1 = soc_fw_config_info->config_addr;
}
arm_bl31_early_platform_setup((void *)arg0, arg1, arg2, (void *)arg3);
arm_bl31_early_platform_setup(arg0, arg1, arg2, arg3);
/*
* Initialize Interconnect for this cluster during cold boot.

2
plat/arm/board/neoverse_rd/common/nrd_bl31_setup.c
View file

@ -179,7 +179,7 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
arg1 = soc_fw_config_info->config_addr;
}
#endif /* SPMD_SPM_AT_SEL2 && !RESET_TO_BL31 */
arm_bl31_early_platform_setup((void *)arg0, arg1, arg2, (void *)arg3);
arm_bl31_early_platform_setup(arg0, arg1, arg2, arg3);
}
/*******************************************************************************

5
plat/arm/board/tc/tc_bl31_setup.c
View file

@ -154,7 +154,10 @@ scmi_channel_plat_info_t *plat_css_get_scmi_info(unsigned int channel_id __unuse
void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
arm_bl31_early_platform_setup((void *)arg0, arg1, arg2, (void *)arg3);
/* Initialize the console to provide early debug support */
arm_console_boot_init();
arm_bl31_early_platform_setup(arg0, arg1, arg2, arg3);
/* Fill the properties struct with the info from the config dtb */
fconf_populate("FW_CONFIG", arg1);

20
plat/arm/common/arm_bl2_setup.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2024, Arm Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2025, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -66,8 +66,8 @@ struct transfer_list_header *secure_tl __unused;
* in x0. This memory layout is sitting at the base of the free trusted SRAM.
* Copy it to a safe location before its reclaimed by later BL2 functionality.
******************************************************************************/
void arm_bl2_early_platform_setup(uintptr_t fw_config,
struct meminfo *mem_layout)
void arm_bl2_early_platform_setup(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
struct transfer_list_entry *te __unused;
int __maybe_unused ret;
@ -76,8 +76,7 @@ void arm_bl2_early_platform_setup(uintptr_t fw_config,
arm_console_boot_init();
#if TRANSFER_LIST
// TODO: modify the prototype of this function fw_config != bl2_tl
secure_tl = (struct transfer_list_header *)fw_config;
secure_tl = (struct transfer_list_header *)arg3;
te = transfer_list_find(secure_tl, TL_TAG_SRAM_LAYOUT64);
assert(te != NULL);
@ -85,11 +84,11 @@ void arm_bl2_early_platform_setup(uintptr_t fw_config,
bl2_tzram_layout = *(meminfo_t *)transfer_list_entry_data(te);
transfer_list_rem(secure_tl, te);
#else
config_base = fw_config;
config_base = (uintptr_t)arg0;
/* Setup the BL2 memory layout */
bl2_tzram_layout = *mem_layout;
#endif
bl2_tzram_layout = *(meminfo_t *)arg1;
#endif /* TRANSFER_LIST */
/* Initialise the IO layer and register platform IO devices */
plat_arm_io_setup();
@ -105,9 +104,10 @@ void arm_bl2_early_platform_setup(uintptr_t fw_config,
#endif /* ARM_GPT_SUPPORT */
}
void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_t arg2, u_register_t arg3)
void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
arm_bl2_early_platform_setup((uintptr_t)arg0, (meminfo_t *)arg1);
arm_bl2_early_platform_setup(arg0, arg1, arg2, arg3);
generic_delay_timer_init();
}

38
plat/arm/common/arm_bl31_setup.c
View file

@ -154,10 +154,10 @@ struct entry_point_info *bl31_plat_get_next_image_ep_info(uint32_t type)
* while creating page tables. BL2 has flushed this information to memory, so
* we are guaranteed to pick up good data.
******************************************************************************/
#if TRANSFER_LIST
void __init arm_bl31_early_platform_setup(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
#if TRANSFER_LIST
#if RESET_TO_BL31
/* Populate entry point information for BL33 */
SET_PARAM_HEAD(&bl33_image_ep_info, PARAM_EP, VERSION_1, 0);
@ -208,18 +208,11 @@ void __init arm_bl31_early_platform_setup(u_register_t arg0, u_register_t arg1,
}
}
#endif /* RESET_TO_BL31 */
}
#else
void __init arm_bl31_early_platform_setup(void *from_bl2, uintptr_t soc_fw_config,
uintptr_t hw_config, void *plat_params_from_bl2)
{
/* Initialize the console to provide early debug support */
arm_console_boot_init();
#else /* (!TRANSFER_LIST) */
#if RESET_TO_BL31
/* There are no parameters from BL2 if BL31 is a reset vector */
assert(from_bl2 == NULL);
assert(plat_params_from_bl2 == NULL);
assert((void *)arg0 == NULL);
assert((void *)arg3 == NULL);
# ifdef BL32_BASE
/* Populate entry point information for BL32 */
@ -258,21 +251,18 @@ void __init arm_bl31_early_platform_setup(void *from_bl2, uintptr_t soc_fw_confi
*/
rmm_image_ep_info.pc = RMM_BASE;
#endif /* ENABLE_RME */
#else /* RESET_TO_BL31 */
/*
* In debug builds, we pass a special value in 'plat_params_from_bl2'
* In debug builds, we pass a special value in 'arg3'
* to verify platform parameters from BL2 to BL31.
* In release builds, it's not used.
*/
assert(((unsigned long long)plat_params_from_bl2) ==
ARM_BL31_PLAT_PARAM_VAL);
assert(((unsigned long long)arg3) == ARM_BL31_PLAT_PARAM_VAL);
/*
* Check params passed from BL2 should not be NULL,
*/
bl_params_t *params_from_bl2 = (bl_params_t *)from_bl2;
bl_params_t *params_from_bl2 = (bl_params_t *)arg0;
assert(params_from_bl2 != NULL);
assert(params_from_bl2->h.type == PARAM_BL_PARAMS);
assert(params_from_bl2->h.version >= VERSION_2);
@ -325,7 +315,7 @@ void __init arm_bl31_early_platform_setup(void *from_bl2, uintptr_t soc_fw_confi
#endif
#endif /* RESET_TO_BL31 */
# if ARM_LINUX_KERNEL_AS_BL33
#if ARM_LINUX_KERNEL_AS_BL33
/*
* According to the file ``Documentation/arm64/booting.txt`` of the
* Linux kernel tree, Linux expects the physical address of the device
@ -339,23 +329,19 @@ void __init arm_bl31_early_platform_setup(void *from_bl2, uintptr_t soc_fw_confi
#if RESET_TO_BL31
bl33_image_ep_info.args.arg0 = (u_register_t)ARM_PRELOADED_DTB_BASE;
#else
bl33_image_ep_info.args.arg0 = (u_register_t)hw_config;
#endif
bl33_image_ep_info.args.arg0 = arg2;
#endif /* RESET_TO_BL31 */
bl33_image_ep_info.args.arg1 = 0U;
bl33_image_ep_info.args.arg2 = 0U;
bl33_image_ep_info.args.arg3 = 0U;
# endif
#endif /* ARM_LINUX_KERNEL_AS_BL33 */
#endif /* TRANSFER_LIST */
}
#endif
void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
#if TRANSFER_LIST
arm_bl31_early_platform_setup(arg0, arg1, arg2, arg3);
#else
arm_bl31_early_platform_setup((void *)arg0, arg1, arg2, (void *)arg3);
#endif
/*
* Initialize Interconnect for this cluster during cold boot.

1
plat/arm/common/arm_common.mk
View file

@ -311,6 +311,7 @@ BL31_SOURCES += plat/arm/common/arm_bl31_setup.c \
plat/common/plat_psci_common.c
ifeq (${TRANSFER_LIST}, 1)
include lib/transfer_list/transfer_list.mk
TRANSFER_LIST_SOURCES += plat/arm/common/arm_transfer_list.c
endif

4
plat/arm/css/common/css_bl2_setup.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2023, Arm Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2025, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -56,7 +56,7 @@ static unsigned int scp_boot_config;
void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
arm_bl2_early_platform_setup((uintptr_t)arg0, (meminfo_t *)arg1);
arm_bl2_early_platform_setup(arg0, arg1, arg2, arg3);
/* Save SCP Boot config before it gets overwritten by SCP_BL2 loading */
scp_boot_config = mmio_read_32(SCP_BOOT_CFG_ADDR);