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feat(tc): port BL31-BL33 interface to firmware handoff framework

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Adding support for this framework at the handoff boundary between
firmware stage BL31 and BL33 on TC.

Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
Change-Id: Ia6cd29c8b6cdda0a127a3bac02f6fa1dcfc07151
This commit is contained in:
Jayanth Dodderi Chidanand 2025-03-01 18:17:23 +00:00
parent 2a36dee8f1
commit 25a6bcd571
3 changed files with 20 additions and 0 deletions
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6
plat/arm/board/tc/include/platform_def.h
View file

@ -42,12 +42,18 @@
#define PLAT_ARM_FW_HANDOFF_SIZE U(0x9000)
#define PLAT_ARM_EL3_FW_HANDOFF_BASE ARM_BL_RAM_BASE
#define PLAT_ARM_EL3_FW_HANDOFF_LIMIT PLAT_ARM_EL3_FW_HANDOFF_BASE + PLAT_ARM_FW_HANDOFF_SIZE
#define FW_NS_HANDOFF_BASE (PLAT_ARM_NS_IMAGE_BASE - PLAT_ARM_FW_HANDOFF_SIZE)
/* Mappings for Secure and Non-secure Transfer_list */
#define TC_MAP_EL3_FW_HANDOFF MAP_REGION_FLAT( \
PLAT_ARM_EL3_FW_HANDOFF_BASE, \
PLAT_ARM_FW_HANDOFF_SIZE, \
MT_MEMORY | MT_RW | EL3_PAS)
#define TC_MAP_FW_NS_HANDOFF MAP_REGION_FLAT( \
FW_NS_HANDOFF_BASE, \
PLAT_ARM_FW_HANDOFF_SIZE, \
MT_MEMORY | MT_RW | MT_NS)
#endif /* TRANSFER_LIST */
/*

10
plat/arm/board/tc/tc_bl31_setup.c
View file

@ -159,8 +159,10 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
arm_bl31_early_platform_setup(arg0, arg1, arg2, arg3);
#if !TRANSFER_LIST
/* Fill the properties struct with the info from the config dtb */
fconf_populate("FW_CONFIG", arg1);
#endif
}
#ifdef PLATFORM_TESTS
@ -205,6 +207,13 @@ void __init bl31_plat_arch_setup(void)
{
arm_bl31_plat_arch_setup();
/*
* When TRANSFER_LIST is enabled, HW_CONFIG is included in Transfer List
* as an entry with the tag TL_TAG_FDT. In this case, the configuration
* is already available, so the fconf_populate mechanism is not needed.
* The code block below is only required when TRANSFER_LIST is not used.
*/
#if !TRANSFER_LIST
/* HW_CONFIG was also loaded by BL2 */
const struct dyn_cfg_dtb_info_t *hw_config_info;
@ -212,6 +221,7 @@ void __init bl31_plat_arch_setup(void)
assert(hw_config_info != NULL);
fconf_populate("HW_CONFIG", hw_config_info->config_addr);
#endif
}
#if defined(SPD_spmd) && (SPMC_AT_EL3 == 0)

4
plat/arm/board/tc/tc_plat.c
View file

@ -77,6 +77,10 @@ const mmap_region_t plat_arm_mmap[] = {
PLAT_DTB_DRAM_NS,
#if SPM_MM
ARM_SPM_BUF_EL3_MMAP,
#endif
#if TRANSFER_LIST
TC_MAP_FW_NS_HANDOFF,
TC_MAP_EL3_FW_HANDOFF,
#endif
{0}
};