better mboot and kalloc

1 files changed, 24 insertions, 3 deletions

diff --git a/src/arch/amd64/acpi.c b/src/arch/amd64/acpi.c
index 61083f4..732add7 100644
--- a/src/arch/amd64/acpi.c
+++ b/src/arch/amd64/acpi.c
@@ -5,6 +5,7 @@
 #include <stddef.h>
 
 #include "bindings.h"
+#include "memory.h"
 #include "serial.h"
 
 /* global state, idk a better way rn */
@@ -51,7 +52,7 @@ struct xsdp {
 // ACPI 1.0
 struct rsdt {
 	struct acpi_header h;
-	uint64_t sdt_pointers[];
+	uint32_t sdt_pointers[];
 };
 
 // eXtended system descriptor table
@@ -140,6 +141,11 @@ struct fadt {
 };
 
 struct acpi_state {
+	union {
+		struct xsdt *xsdt;
+		struct rsdt *rsdt;
+	} dst;
+	uint8_t version;
 	struct fadt fadt;
 	uint16_t SLP_TYPa;
 	uint16_t SLP_TYPb;
@@ -196,10 +202,15 @@ static int read_s5_addr(struct acpi_state *state) {
 }
 
 static void *acpi_find_table_rsdt(struct rsdt *rsdt, const char *identifier, int ident_len) {
-	int entries = (rsdt->h.length - sizeof(rsdt->h)) / 8;
+	int entries = (rsdt->h.length - sizeof(rsdt->h)) / 4;
 
 	for (int i = 0; i < entries; i++) {
 		struct acpi_header *h = (struct acpi_header *) (uintptr_t) rsdt->sdt_pointers[i];
+		char buf[6];
+		memcpy(buf, h->signature, 4);
+		buf[4] = '\n';
+		buf[5] = '\0';
+		serial_out_str(buf);
 		if (!strncmp(h->signature, identifier, ident_len))
 			return (void *)h;
 	}
@@ -222,6 +233,11 @@ static void *acpi_find_table_xsdt(struct xsdt *xsdt, const char *identifier, int
 }
 
 int acpi_init_rsdt(struct rsdt *rsdt) {
+	rsdt = mmap(rsdt, sizeof(struct rsdt));
+
+	state.dst.rsdt = rsdt;
+	state.version = 0;
+
 	if (!checksum((uint8_t *) &rsdt->h, rsdt->h.length))
 		return -1;
 
@@ -238,6 +254,11 @@ int acpi_init_rsdt(struct rsdt *rsdt) {
 }
 
 int acpi_init_xsdt(struct xsdt *xsdt) {
+
+	xsdt = mmap(xsdt, sizeof(struct xsdt));
+	state.dst.xsdt = xsdt;
+	state.version = 2;
+
 	if (!checksum((uint8_t *) &xsdt->h, xsdt->h.length))
 		return -1;
 
@@ -256,7 +277,7 @@ int acpi_init_xsdt(struct xsdt *xsdt) {
 int acpi_init(void *rootsdp) {
 	struct rsdp *rsdp = (struct rsdp *) rootsdp;
 
-	if (!checksum((uint8_t *)rsdp, sizeof(struct xsdp)))
+	if (!checksum((uint8_t *)rsdp, sizeof(struct rsdp)))
 		return -1;
 
 	int res;