kernel/amd64: Add task state segment logic

This commit implements the task state segment and splits up processor
initialization into two seperate stages. The cpu_conf() function is
apart of the first stage and sets up things that should be going by the
time the kernel is started / early init. The cpu_init() function runs
later functions that initialize further platform specific subsystems.

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/src/sys/arch/amd64/cpu/cpu_conf.c b/src/sys/arch/amd64/cpu/cpu_conf.c
index 7c1f5a0..ee3bb78 100644
--- a/src/sys/arch/amd64/cpu/cpu_conf.c
+++ b/src/sys/arch/amd64/cpu/cpu_conf.c
@@ -57,12 +57,17 @@ init_vectors(void)
 void
 cpu_conf(struct pcore *pcore)
 {
+    /* We use %GS to store the processor */
     pcore->self = pcore;
+    wrmsr(IA32_GS_BASE, (uintptr_t)pcore);
+
     init_vectors();
     idt_load();
-    platform_boot();
+}
 
-    /* We use %GS to store the processor */
-    wrmsr(IA32_GS_BASE, (uintptr_t)pcore);
+void
+cpu_init(struct pcore *pcore)
+{
     lapic_init();
+    platform_boot();
 }