Integrate uACPI

kernel/amd64/bootmain.c

@@ -3,18 +3,21 @@
 #include <sys/debug.h>
 #include <mm/pmm.h>
 #include <mm/liballoc.h>
+#include <uacpi/uacpi.h>
+
+#define UACPI_MEMORY_BUFFER_MAX 4096
+
+__attribute__((aligned(16))) static uint8_t uacpi_memory_buffer[UACPI_MEMORY_BUFFER_MAX];
 
 void bootmain(void) {
   amd64_init();
-  DEBUG("Hello from amd64!\n");
-
   pmm_init();
+  
+  uacpi_setup_early_table_access((void *)uacpi_memory_buffer, sizeof(uacpi_memory_buffer));
 
   int *a = malloc(sizeof(int));
   *a = 6969;
   DEBUG("a=%p, *a=%d\n", a, *a);
 
-  *(volatile int *)0 = 123;
-
   for (;;);
 }

kernel/amd64/vars.mk

@@ -0,0 +1,2 @@
+# make vars
+PLATFORM_ACPI=1