[coreboot-gerrit] New patch to review for coreboot: 8e86224 arm64: add smp_processor_id() declaration

[Patrick Georgi (pgeorgi@google.com)]

Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9007

-gerrit

commit 8e86224dd7c9b90e9402ee07ea6c08ba7c689f77
Author: Aaron Durbin <adurbin at chromium.org>
Date:   Wed Aug 27 10:26:15 2014 -0500

    arm64: add smp_processor_id() declaration
    
    In order to accomodate MP on arm64 one needs to be able to determine
    the current logical processor id. Because it depends on the SoC
    implementation the SoC needs to provide this implementation.
    
    BUG=chrome-os-partner:31545
    BRANCH=None
    TEST=Built.
    
    Change-Id: I2f09df9bf7d4f829d8f45471bf7281a4ddba2fc8
    Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
    Original-Commit-Id: 6033e73d70c3b8296b36ff36b4b848b176917e12
    Original-Change-Id: I9511b54b5a1ab340b0f1309b0d9976be68b50903
    Original-Signed-off-by: Aaron Durbin <adurbin at chromium.org>
    Original-Reviewed-on: https://chromium-review.googlesource.com/214663
    Original-Reviewed-by: Furquan Shaikh <furquan at chromium.org>
---
 src/arch/arm64/include/armv8/arch/cpu.h | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/arch/arm64/include/armv8/arch/cpu.h b/src/arch/arm64/include/armv8/arch/cpu.h
index 5a8f145..70311dd 100644
--- a/src/arch/arm64/include/armv8/arch/cpu.h
+++ b/src/arch/arm64/include/armv8/arch/cpu.h
@@ -40,13 +40,16 @@ struct cpu_info {
 #endif
 };
 
-struct cpuinfo_arm {
-        uint8_t    arm;            /* CPU family */
-        uint8_t    arm_vendor;     /* CPU vendor */
-        uint8_t    arm_model;
-};
-
 #endif
 
 struct cpu_info *cpu_info(void);
+
+/*
+ * Returns logical cpu in range [0:MAX_CPUS). SoC should define this.
+ * Additionally, this is needed early in arm64 init so it should not
+ * rely on a stack. Standard clobber list is fair game: x0-x7 and x0
+ * returns the logical cpu number.
+ */
+unsigned int smp_processor_id(void);
+
 #endif /* __ARCH_CPU_H__ */