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feat(handoff): add support for RESET_TO_BL2

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When BL2 is enabled as the entrypoint in the reset vector, none of the
TL initialisation ordinarily performed in BL1 will have been done. This
change ensures that BL2 has a secure TL to pass information onto BL31
through.

Change-Id: I553b0b7aac9390cd6a2d63471b81ddc72cc40a60
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
This commit is contained in:
Harrison Mutai 2024-04-23 10:31:36 +00:00
parent 9c11ed7e3e
commit f019c8013e
2 changed files with 12 additions and 1 deletions
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11
plat/arm/common/arm_bl2_setup.c
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@ -127,6 +127,17 @@ void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_
void bl2_plat_preload_setup(void)
{
#if TRANSFER_LIST
/* Assume the secure TL hasn't been initialised if BL2 is running at EL3. */
#if RESET_TO_BL2
secure_tl = transfer_list_init((void *)PLAT_ARM_EL3_FW_HANDOFF_BASE,
PLAT_ARM_FW_HANDOFF_SIZE);
if (secure_tl == NULL) {
ERROR("Secure transfer list initialisation failed!\n");
panic();
}
#endif
arm_transfer_list_dyn_cfg_init(secure_tl);
#else
arm_bl2_dyn_cfg_init();

2
plat/arm/common/arm_bl31_setup.c
View file

@ -504,7 +504,7 @@ void __init bl31_plat_arch_setup(void)
arm_bl31_plat_arch_setup();
#if TRANSFER_LIST
#if TRANSFER_LIST && !RESET_TO_BL2
te = transfer_list_find(secure_tl, TL_TAG_FDT);
assert(te != NULL);