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authorKyösti Mälkki <kyosti.malkki@gmail.com>2017-08-18 12:11:16 +0300
committerKyösti Mälkki <kyosti.malkki@gmail.com>2017-08-19 15:30:40 +0000
commitff284f656606548f122c59a9ffb6ab453ca89149 (patch)
treef04801df002509c12a735dbfa7a5fa91d9857850 /src/include/cpu/x86/lapic.h
parentaeb2d64c85ca2c3a77f50d57e3a92f6fc0a5c2d3 (diff)
downloadcoreboot-ff284f656606548f122c59a9ffb6ab453ca89149.tar.xz
arch/x86: Fix ugly NEED_LAPIC use
Change-Id: I2d6fdfd0465fe5f558daa04c6f980f7226596b55 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/21087 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/include/cpu/x86/lapic.h')
-rw-r--r--src/include/cpu/x86/lapic.h32
1 files changed, 18 insertions, 14 deletions
diff --git a/src/include/cpu/x86/lapic.h b/src/include/cpu/x86/lapic.h
index e781b5a5bb..6121230a22 100644
--- a/src/include/cpu/x86/lapic.h
+++ b/src/include/cpu/x86/lapic.h
@@ -6,13 +6,6 @@
#include <halt.h>
#include <smp/node.h>
-/* See if I need to initialize the local APIC */
-#if IS_ENABLED(CONFIG_SMP) || IS_ENABLED(CONFIG_IOAPIC)
-# define NEED_LAPIC 1
-#else
-# define NEED_LAPIC 0
-#endif
-
static inline __attribute__((always_inline)) unsigned long lapic_read(
unsigned long reg)
{
@@ -32,12 +25,12 @@ static inline __attribute__((always_inline)) void lapic_wait_icr_idle(void)
static inline void enable_lapic(void)
{
-
msr_t msr;
msr = rdmsr(LAPIC_BASE_MSR);
msr.hi &= 0xffffff00;
- msr.lo &= 0x000007ff;
- msr.lo |= LAPIC_DEFAULT_BASE | (1 << 11);
+ msr.lo &= ~LAPIC_BASE_MSR_ADDR_MASK;
+ msr.lo |= LAPIC_DEFAULT_BASE;
+ msr.lo |= LAPIC_BASE_MSR_ENABLE;
wrmsr(LAPIC_BASE_MSR, msr);
}
@@ -45,7 +38,7 @@ static inline void disable_lapic(void)
{
msr_t msr;
msr = rdmsr(LAPIC_BASE_MSR);
- msr.lo &= ~(1 << 11);
+ msr.lo &= ~LAPIC_BASE_MSR_ENABLE;
wrmsr(LAPIC_BASE_MSR, msr);
}
@@ -146,13 +139,24 @@ static inline int lapic_remote_read(int apicid, int reg, unsigned long *pvalue)
return result;
}
+void do_lapic_init(void);
-void setup_lapic(void);
+/* See if I need to initialize the local APIC */
+static inline int need_lapic_init(void)
+{
+ return IS_ENABLED(CONFIG_SMP) || IS_ENABLED(CONFIG_IOAPIC);
+}
+
+static inline void setup_lapic(void)
+{
+ if (need_lapic_init())
+ do_lapic_init();
+ else
+ disable_lapic();
+}
-#if IS_ENABLED(CONFIG_SMP)
struct device;
int start_cpu(struct device *cpu);
-#endif /* CONFIG_SMP */
#endif /* !__PRE_RAM__ */