summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/x86/kernel/apic/apic.c125
1 files changed, 62 insertions, 63 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 3b4bdd5da12e..c681e9ba9e47 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1852,71 +1852,8 @@ void __init register_lapic_address(unsigned long address)
}
}
-/*
- * This initializes the IO-APIC and APIC hardware if this is
- * a UP kernel.
- */
int apic_version[MAX_LOCAL_APIC];
-int __init APIC_init_uniprocessor(void)
-{
- if (disable_apic) {
- pr_info("Apic disabled\n");
- return -1;
- }
-#ifdef CONFIG_X86_64
- if (!cpu_has_apic) {
- disable_apic = 1;
- pr_info("Apic disabled by BIOS\n");
- return -1;
- }
-#else
- if (!smp_found_config && !cpu_has_apic)
- return -1;
-
- /*
- * Complain if the BIOS pretends there is one.
- */
- if (!cpu_has_apic &&
- APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
- pr_err("BIOS bug, local APIC 0x%x not detected!...\n",
- boot_cpu_physical_apicid);
- return -1;
- }
-#endif
-
- default_setup_apic_routing();
-
- verify_local_APIC();
- connect_bsp_APIC();
-
-#ifdef CONFIG_X86_64
- apic_write(APIC_ID, SET_APIC_ID(boot_cpu_physical_apicid));
-#else
- /*
- * Hack: In case of kdump, after a crash, kernel might be booting
- * on a cpu with non-zero lapic id. But boot_cpu_physical_apicid
- * might be zero if read from MP tables. Get it from LAPIC.
- */
-# ifdef CONFIG_CRASH_DUMP
- boot_cpu_physical_apicid = read_apic_id();
-# endif
-#endif
- physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
- setup_local_APIC();
-
- /* Enable IO-APICs before enabling error vector */
- enable_IO_APIC();
-
- bsp_end_local_APIC_setup();
-
- if (smp_found_config)
- setup_IO_APIC();
-
- x86_init.timers.setup_percpu_clockev();
- return 0;
-}
-
/*
* Local APIC interrupts
*/
@@ -2269,6 +2206,68 @@ void __init apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v))
}
/*
+ * This initializes the IO-APIC and APIC hardware if this is
+ * a UP kernel.
+ */
+int __init APIC_init_uniprocessor(void)
+{
+ if (disable_apic) {
+ pr_info("Apic disabled\n");
+ return -1;
+ }
+#ifdef CONFIG_X86_64
+ if (!cpu_has_apic) {
+ disable_apic = 1;
+ pr_info("Apic disabled by BIOS\n");
+ return -1;
+ }
+#else
+ if (!smp_found_config && !cpu_has_apic)
+ return -1;
+
+ /*
+ * Complain if the BIOS pretends there is one.
+ */
+ if (!cpu_has_apic &&
+ APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
+ pr_err("BIOS bug, local APIC 0x%x not detected!...\n",
+ boot_cpu_physical_apicid);
+ return -1;
+ }
+#endif
+
+ default_setup_apic_routing();
+
+ verify_local_APIC();
+ connect_bsp_APIC();
+
+#ifdef CONFIG_X86_64
+ apic_write(APIC_ID, SET_APIC_ID(boot_cpu_physical_apicid));
+#else
+ /*
+ * Hack: In case of kdump, after a crash, kernel might be booting
+ * on a cpu with non-zero lapic id. But boot_cpu_physical_apicid
+ * might be zero if read from MP tables. Get it from LAPIC.
+ */
+# ifdef CONFIG_CRASH_DUMP
+ boot_cpu_physical_apicid = read_apic_id();
+# endif
+#endif
+ physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
+ setup_local_APIC();
+
+ if (smp_found_config)
+ enable_IO_APIC();
+
+ bsp_end_local_APIC_setup();
+
+ setup_IO_APIC();
+
+ x86_init.timers.setup_percpu_clockev();
+ return 0;
+}
+
+/*
* Power management
*/
#ifdef CONFIG_PM