From 786b1224795b76889e5eb10644b5102646f4c24b Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Thu, 7 May 2015 16:59:31 -0700 Subject: arm64: Reorganize payload entry code and related Kconfigs This patch slightly reorganizes arm64/boot.c with the aim of being more readable: the secure monitor entry is now guarded by an explicit if statement for its Kconfig rather than hiding than in the corresponding header file. This makes it clear that there are two (soon three) separate code paths here. Change-Id: I44993da7a982b08f485b93ffc522d193bb3fa118 Signed-off-by: Patrick Georgi Original-Commit-Id: 5067e47bc03f04ad2dba044f022716e0fc62bb9e Original-Change-Id: I1b2038acc0d054716a3c580ce97ea8e9a45abfa2 Original-Signed-off-by: Julius Werner Original-Reviewed-on: https://chromium-review.googlesource.com/270783 Original-Reviewed-by: Aaron Durbin Reviewed-on: http://review.coreboot.org/10243 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/arch/arm64/boot.c | 34 ++++++++++++++++++---------------- 1 file changed, 18 insertions(+), 16 deletions(-) (limited to 'src/arch') diff --git a/src/arch/arm64/boot.c b/src/arch/arm64/boot.c index f62ceb66ef..1fdc234fd1 100644 --- a/src/arch/arm64/boot.c +++ b/src/arch/arm64/boot.c @@ -40,27 +40,29 @@ static void run_payload(struct prog *prog) printk(BIOS_SPEW, "entry = %p\n", doit); - secmon_run(doit, arg); + if (IS_ENABLED(CONFIG_ARM64_USE_SECURE_MONITOR)) + secmon_run(doit, arg); + else { + /* Start the other CPUs spinning. */ + spintable_start(); - /* Start the other CPUs spinning. */ - spintable_start(); + /* If current EL is not EL3, jump to payload at same EL. */ + if (current_el != EL3) { + cache_sync_instructions(); + /* Point of no-return */ + doit(arg); + } - /* If current EL is not EL3, jump to payload at same EL. */ - if (current_el != EL3) { - cache_sync_instructions(); - /* Point of no-return */ - doit(arg); - } - - /* If current EL is EL3, we transition to payload in EL2. */ - struct exc_state exc_state; + /* If current EL is EL3, we transition to payload in EL2. */ + struct exc_state exc_state; - memset(&exc_state, 0, sizeof(exc_state)); + memset(&exc_state, 0, sizeof(exc_state)); - exc_state.elx.spsr = get_eret_el(EL2, SPSR_USE_L); + exc_state.elx.spsr = get_eret_el(EL2, SPSR_USE_L); - cache_sync_instructions(); - transition_with_entry(doit, arg, &exc_state); + cache_sync_instructions(); + transition_with_entry(doit, arg, &exc_state); + } } void arch_prog_run(struct prog *prog) -- cgit v1.2.3