1 files changed, 38 insertions, 0 deletions
diff --git a/kernel/src/apic/rsdp.c b/kernel/src/apic/rsdp.c
index ebecd66..983ab5f 100644
--- a/kernel/src/apic/rsdp.c
+++ b/kernel/src/apic/rsdp.c
@@ -24,6 +24,44 @@ uint64_t* find_rsdp()
 	return NULL;
 }
 
+void list_sys_tables(void)
+{
+	uint64_t* rsdp = find_rsdp();
+
+	if (rsdp == NULL) {
+		printf("RSDP NOT FOUND\n");
+		return;
+	}
+
+	struct RSDP_descriptor* rsdp_desc = (struct RSDP_descriptor*)rsdp;
+	map_addr(rsdp_desc->RsdtAddress, rsdp_desc->RsdtAddress, FLAG_PRESENT);
+
+	struct ACPI_header* rsdt = (struct ACPI_header*)kalloc(sizeof(struct ACPI_header));
+	memcpy(rsdt, (uint64_t*)(uint64_t)rsdp_desc->RsdtAddress, sizeof(struct ACPI_header));
+
+	uint32_t entries = (rsdt->Length - (uint32_t)sizeof(struct ACPI_header)) / 4;
+
+	for (size_t i = 0; i < entries; i++) {
+		uint32_t na_addr = (uint32_t)rsdp_desc->RsdtAddress + (uint32_t)sizeof(struct ACPI_header) + (uint32_t)i * 4;
+		uint32_t addr;
+		memcpy(&addr, (uint64_t*)(uint64_t)na_addr, 4);
+
+		struct ACPI_header* t = (struct ACPI_header*)kalloc(sizeof(struct ACPI_header));
+		memcpy(t, (uint64_t*)(uint64_t)addr, sizeof(struct ACPI_header));
+
+		for (size_t j = 0; j < 4; j++) {
+			printf("%c", t->Signature[j]);
+		}
+		printf(", ");
+
+		kfree(t);
+	}
+	printf("\n");
+
+	kfree(rsdt);
+
+}
+
 uint64_t* find_sys_table_addr(const char* signature)
 {
 	uint64_t* rsdp = find_rsdp();