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authorAaron Durbin <adurbin@chromium.org>2014-08-27 10:30:39 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-03-27 08:03:53 +0100
commit1b315d0cdedede33cc2ac2892ae4fd36fef19b4e (patch)
treedb3639e4d481e5ac06e4b52e0751df4f590f4eff /src/arch/arm64
parentebfee7e9914770b126ba8451ef824d763e1c66c5 (diff)
arm64: implement cpu_info() correctly
There are 2 things wrong with the current implementation: 1. the stack isn't guaranteed to be aligned to CONFIG_STACK_SIZE. 2. the stack isn't necessarily CONFIG_STACK_SIZE bytes. Utilize the smp_processor_id() function to obtain the correct cpu_info structure to obtain the correct index. BUG=chrome-os-partner:31545 BRANC=None TEST=Built and booted. Change-Id: I43d4a2baa26e48147bc0dbdb3e9e13ad023f0690 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: e2c32b1a46ac8dc1364ed03c195322c0bf28dd7f Original-Change-Id: I2825118e2313dbbf13712a4afdfa05a2e38ee3a4 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/214665 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9009 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/arch/arm64')
-rw-r--r--src/arch/arm64/cpu.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/src/arch/arm64/cpu.c b/src/arch/arm64/cpu.c
index f90c759559..e3bc19d163 100644
--- a/src/arch/arm64/cpu.c
+++ b/src/arch/arm64/cpu.c
@@ -30,13 +30,9 @@
#include <stdlib.h>
#include <arch/cpu.h>
-/* Return the cpu struct which is at the high memory address of the stack.
- */
+static struct cpu_info cpu_infos[CONFIG_MAX_CPUS];
+
struct cpu_info *cpu_info(void)
{
- uintptr_t addr = ALIGN((uintptr_t)__builtin_frame_address(0),
- CONFIG_STACK_SIZE);
- addr -= sizeof(struct cpu_info);
- return (void *)addr;
+ return &cpu_infos[smp_processor_id()];
}
-