initgraph, whole lot of refactor

dev/acpi/init.c

@@ -1,25 +1,45 @@
+#define pr_fmt(fmt) "acpi: " fmt
+
 #include <zinnia/acpi.h>
+#include <zinnia/alloc.h>
 #include <zinnia/cmdline.h>
+#include <zinnia/percpu.h>
 #include <zinnia/print.h>
 #include <zinnia/types.h>
+#include <uacpi/status.h>
+#include <uacpi/tables.h>
+#include <uacpi/uacpi.h>
 
 phys_t acpi_rsdp_addr = 0;
 
+static char table_buf[0x1000];
+
 static bool use_acpi = true;
 void use_acpi_option(bool use) {
     use_acpi = use;
 }
 CMDLINE_OPTION("acpi", "Enable ACPI firmware subsystem", use_acpi_option);
 
-void acpi_init(struct boot_info* info) {
+[[__init]]
+static bool acpi_stage_init(struct boot_info* info) {
     if (!use_acpi) {
-        log("acpi: ACPI disabled on the command line!\n");
-        return;
+        log_warn("ACPI disabled on the command line!\n");
+        return false;
     }
 
     if (!info->rsdp) {
-        log("acpi: No RSDP was passed, unable to start ACPI subsystem!\n");
-        return;
+        log_warn("No RSDP was passed, unable to start ACPI subsystem!\n");
+        return false;
     }
     acpi_rsdp_addr = info->rsdp;
+
+    if (uacpi_setup_early_table_access(table_buf, sizeof(table_buf)) != UACPI_STATUS_OK) {
+        log_err("Failed to set up early table access!\n");
+        return false;
+    }
+
+    return true;
 }
+INIT_TASK(acpi_stage, "dev.acpi", acpi_stage_init);
+INIT_DEPENDS(acpi_stage, mem_stage);
+INIT_ENTAILS(acpi_stage, percpu_stage);