refactor, new arch dirs, (wip) page alloc on write, hsv screen (convert to userspace later), other fixes

1 files changed, 26 insertions, 10 deletions

diff --git a/src/arch/amd64/acpi.c b/src/arch/amd64/acpi.c
index e262a99..eb38f73 100644
--- a/src/arch/amd64/acpi.c
+++ b/src/arch/amd64/acpi.c
@@ -1,14 +1,12 @@
 #include <acpi.h>
 #include <lib.h>
-
+#include <memory.h>
 #include <stdint.h>
 #include <stddef.h>
+#include <string.h>
+#include <panic.h>
 
 #include "bindings.h"
-#include "memory.h"
-
-/* global state, idk a better way rn */
-struct acpi_state state;
 
 struct acpi_header {
 	char signature[4];
@@ -20,7 +18,7 @@ struct acpi_header {
 	uint32_t oem_revision;
 	uint32_t creator_id;
 	uint32_t creator_revision;
-};
+} __attribute__((packed));
 
 // root system descriptor pointer
 // ACPI 1.0
@@ -30,7 +28,7 @@ struct rsdp {
 	char oemid[6];
 	uint8_t revision;
 	uint32_t rsdt_addr;
-};
+} __attribute__((packed));
 
 // eXtended system descriptor pointer
 // ACPI 2.0
@@ -45,7 +43,7 @@ struct xsdp {
 	uint64_t xsdt_addr;
 	uint8_t extendeid_checksum;
 	uint8_t reserved[3];
-};
+} __attribute__((packed));
 
 // root system descriptor table
 // ACPI 1.0
@@ -152,6 +150,9 @@ struct acpi_state {
 	uint16_t SCI_EN;
 };
 
+/* global state, idk a better way rn */
+static struct acpi_state state;
+
 static bool checksum(uint8_t *data, size_t len) {
 	unsigned char sum = 0;
 	for (size_t i = 0; i < len; i++)
@@ -230,6 +231,9 @@ static void *acpi_find_table_xsdt(struct xsdt *xsdt, const char *identifier, int
 }
 
 int acpi_init_rsdt(struct rsdt *rsdt) {
+
+	kprintf("RSDT: %#016lx\n", (size_t)rsdt);
+
 	rsdt = mmap(rsdt, sizeof(struct rsdt));
 
 	state.dst.rsdt = rsdt;
@@ -278,23 +282,35 @@ int acpi_init(void *rootsdp) {
 	if (!checksum((uint8_t *)rsdp, sizeof(struct rsdp)))
 		return -1;
 
+	if (strncmp(rsdp->signature, "RSD PTR ", 8) != 0) {
+		panic("invalid acpi rsdp signature: %.*s\n", 8, rsdp->signature);
+	}
+
 	int res;
 
 	if (rsdp->revision == 0) {
+		kprintf("ACPI 1.0\n");
+		kprintf("RSDP: %#016lx\n", (size_t)rsdp);
 		res = acpi_init_rsdt(
 				(struct rsdt *) (uintptr_t) rsdp->rsdt_addr
 		);
 	} else if (rsdp->revision == 2) {
 		struct xsdp *xsdp = (struct xsdp *) rsdp;
+		kprintf("ACPI 2.0\n");
+		kprintf("XSDP: %#016lx\n", (size_t)xsdp);
 		res = acpi_init_xsdt(
 				(struct xsdt *) (uintptr_t) xsdp->xsdt_addr
 		);
 	} else {
-		return -1;
+		panic("invalid acpi rev: %d\n", rsdp->revision);
 	}
 
-	if (res)
+	if (res) {
+		kprintf("...acpi failed to load\n\n");
 		return res;
+	}
+
+	kprintf("\n\n");
 
 	int ret = read_s5_addr(&state);
 	if (!ret)