From e2c18e40b111470fbe1aca47b58570099695f10a Mon Sep 17 00:00:00 2001 From: Alison Wang Date: Thu, 10 Nov 2016 10:49:04 +0800 Subject: armv8: fsl-layerscape: SMP support for loading 32-bit OS Spin-table method is used for secondary cores to load 32-bit OS. The architecture information will be got through checking FIT image and saved in the os_arch element of spin-table, then the secondary cores will check os_arch and jump to 32-bit OS or 64-bit OS automatically. Signed-off-by: Alison Wang Signed-off-by: Chenhui Zhao Reviewed-by: York Sun --- arch/arm/lib/bootm.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/arm/lib') diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c index 6f3be8b528..35e6b06733 100644 --- a/arch/arm/lib/bootm.c +++ b/arch/arm/lib/bootm.c @@ -277,6 +277,10 @@ bool armv7_boot_nonsec(void) #endif #ifdef CONFIG_ARM64 +__weak void update_os_arch_secondary_cores(uint8_t os_arch) +{ +} + #ifdef CONFIG_ARMV8_SWITCH_TO_EL1 static void switch_to_el1(void) { @@ -314,6 +318,8 @@ static void boot_jump_linux(bootm_headers_t *images, int flag) if (!fake) { do_nonsec_virt_switch(); + update_os_arch_secondary_cores(images->os.arch); + #ifdef CONFIG_ARMV8_SWITCH_TO_EL1 armv8_switch_to_el2((u64)images->ft_addr, 0, 0, (u64)switch_to_el1, ES_TO_AARCH64); -- cgit