From c3be6190f97c1232e2e0a388586922619ec28239 Mon Sep 17 00:00:00 2001 From: Philipp Tomsich Date: Tue, 4 Jul 2017 11:02:14 +0200 Subject: [PATCH] armv8: spl: Support separate stack for TPL To allow a TPL and SPL to run from different addresses/memories, we need to split setup of the TPL and SPL stacks. To do so, we introduce CONFIG_TPL_STACK (not listed in Kconfig) which can be used to override the initial stack pointer for TPL. To provide backward compatibility for existing boards, this is added as an optional configuration item and the normal search order (i.e. SPL_STACK, then SYS_STACK) apply if not defined. Signed-off-by: Philipp Tomsich Reviewed-by: Simon Glass Reviewed-by: Tom Rini --- arch/arm/lib/crt0_64.S | 4 +++- scripts/config_whitelist.txt | 1 + 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S index 57e728f9f2..177b5bf31d 100644 --- a/arch/arm/lib/crt0_64.S +++ b/arch/arm/lib/crt0_64.S @@ -69,7 +69,9 @@ ENTRY(_main) /* * Set up initial C runtime environment and call board_init_f(0). */ -#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_STACK) +#if defined(CONFIG_TPL_BUILD) && defined(CONFIG_TPL_STACK) + ldr x0, =(CONFIG_TPL_STACK) +#elif defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_STACK) ldr x0, =(CONFIG_SPL_STACK) #else ldr x0, =(CONFIG_SYS_INIT_SP_ADDR) diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt index f509984d77..93c53a3341 100644 --- a/scripts/config_whitelist.txt +++ b/scripts/config_whitelist.txt @@ -4911,6 +4911,7 @@ CONFIG_TI_SPI_MMAP CONFIG_TMU_TIMER CONFIG_TPL_DRIVERS_MISC_SUPPORT CONFIG_TPL_PAD_TO +CONFIG_TPL_STACK CONFIG_TPM_TIS_BASE_ADDRESS CONFIG_TPS6586X_POWER CONFIG_TQM834X -- 2.39.5