msm: socinfo: Add support for detecting Krait and Krait Pass 2
Add APIs for checking whether the current CPU is Krait and
Krait Pass 2.
Change-Id: I5b28e8ae76b2df64675a6808092d792833931544
Signed-off-by: Jin Hong <jinh@codeaurora.org>
diff --git a/arch/arm/mach-msm/include/mach/socinfo.h b/arch/arm/mach-msm/include/mach/socinfo.h
index 9110632..2c3d395 100644
--- a/arch/arm/mach-msm/include/mach/socinfo.h
+++ b/arch/arm/mach-msm/include/mach/socinfo.h
@@ -94,7 +94,9 @@
int __init socinfo_init(void) __must_check;
const int read_msm_cpu_type(void);
const int get_core_count(void);
+const int cpu_is_krait(void);
const int cpu_is_krait_v1(void);
+const int cpu_is_krait_v2(void);
static inline int cpu_is_msm7x01(void)
{
diff --git a/arch/arm/mach-msm/socinfo.c b/arch/arm/mach-msm/socinfo.c
index 281e7b8..817c2dc 100644
--- a/arch/arm/mach-msm/socinfo.c
+++ b/arch/arm/mach-msm/socinfo.c
@@ -798,6 +798,11 @@
};
}
+const int cpu_is_krait(void)
+{
+ return ((read_cpuid_id() & 0xFF00FC00) == 0x51000400);
+}
+
const int cpu_is_krait_v1(void)
{
switch (read_cpuid_id()) {
@@ -810,3 +815,22 @@
return 0;
};
}
+
+const int cpu_is_krait_v2(void)
+{
+ switch (read_cpuid_id()) {
+ case 0x511F04D0:
+ case 0x511F04D1:
+ case 0x511F04D2:
+ case 0x511F04D3:
+ case 0x511F04D4:
+
+ case 0x510F06F0:
+ case 0x510F06F1:
+ case 0x510F06F2:
+ return 1;
+
+ default:
+ return 0;
+ };
+}