Initialize the LINT LVTs on the local APIC of the BSP.

Since the APIC is enabled, we need to initialize LINT0 to ExtINT and LINT1 to NMI.
For now, only do this on non-coreboot configurations.

Signed-off-by: Magnus Christensson <mch@virtutech.com>

diff --git a/src/smp.c b/src/smp.c
index 71b0da8ce39994759877ebdb2f206957f0f73538..71004767ba5c23f0ebba65c54d045cf4105f3b6d 100644 (file)
--- a/src/smp.c
+++ b/src/smp.c
@@ -13,6 +13,8 @@
 
 #define APIC_ICR_LOW ((u8*)BUILD_APIC_ADDR + 0x300)
 #define APIC_SVR     ((u8*)BUILD_APIC_ADDR + 0x0F0)
+#define APIC_LINT0   ((u8*)BUILD_APIC_ADDR + 0x350)
+#define APIC_LINT1   ((u8*)BUILD_APIC_ADDR + 0x360)
 
 #define APIC_ENABLED 0x0100
 
@@ -91,6 +93,14 @@ smp_probe(void)
     u32 val = readl(APIC_SVR);
     writel(APIC_SVR, val | APIC_ENABLED);
 
+    if (! CONFIG_COREBOOT) {
+        /* Set LINT0 as Ext_INT, level triggered */
+        writel(APIC_LINT0, 0x8700);
+
+        /* Set LINT1 as NMI, level triggered */
+        writel(APIC_LINT1, 0x8400);
+    }
+
     // broadcast SIPI
     writel(APIC_ICR_LOW, 0x000C4500);
     u32 sipi_vector = BUILD_AP_BOOT_ADDR >> 12;