From 724219a65f55894413c098be06263960c399c323 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Fri, 15 Apr 2016 14:40:37 -0600 Subject: ARM: always perform per-CPU GIC init The current code in ARMv8's lowlevel_init() skips the per-CPU GIC initialization ifndef CONFIG_ARMV8_MULTIENTRY. However, the per-CPU init should always occur; it's just the one-time init that should only happen on the master. Once this consideration is taken into account, the only difference between the paths when CONFIG_ARMV8_MULTIENTRY is undefined/defined is the use of branch_if_slave. Naively, any unified code would need to invoke this conditionally upon ifdef CONFIG_ARMV8_MULTIENTRY. However, branch_if_slave already checks CONFIG_ARMV8_MULTIENTRY and does nothing if it isn't defined, so we don't even need that ifdef at the call site. Reported-by: Masahiro Yamada Signed-off-by: Stephen Warren Reviewed-by: Masahiro Yamada --- arch/arm/cpu/armv8/start.S | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'arch') diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S index dceedd7..deb44a8 100644 --- a/arch/arm/cpu/armv8/start.S +++ b/arch/arm/cpu/armv8/start.S @@ -201,15 +201,6 @@ ENDPROC(apply_core_errata) WEAK(lowlevel_init) mov x29, lr /* Save LR */ -#ifndef CONFIG_ARMV8_MULTIENTRY -#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3) - /* - * For single-entry systems the lowlevel init is very simple. - */ - ldr x0, =GICD_BASE - bl gic_init_secure -#endif -#else /* CONFIG_ARMV8_MULTIENTRY is set */ #if defined(CONFIG_GICV2) || defined(CONFIG_GICV3) branch_if_slave x0, 1f ldr x0, =GICD_BASE @@ -223,7 +214,6 @@ WEAK(lowlevel_init) ldr x1, =GICC_BASE bl gic_init_secure_percpu #endif -#endif branch_if_master x0, x1, 2f -- cgit v1.1