From eed77bd2970a00d1394ed027ceca5b646e4671ce Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Wed, 17 Jun 2020 18:31:46 +0200
Subject: Started rewrite
---
src/kernel/acpi/acpi.c | 112 -------------------------------------------------
1 file changed, 112 deletions(-)
delete mode 100644 src/kernel/acpi/acpi.c
(limited to 'src/kernel/acpi/acpi.c')
diff --git a/src/kernel/acpi/acpi.c b/src/kernel/acpi/acpi.c
deleted file mode 100644
index 6e1811c..0000000
--- a/src/kernel/acpi/acpi.c
+++ /dev/null
@@ -1,112 +0,0 @@
-// Important specification: https://uefi.org/sites/default/files/resources/ACPI_6_2.pdf
-// HPET: https://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/software-developers-hpet-spec-1-0a.pdf
-
-#include <acpi/acpi.h>
-#include <io/io.h>
-#include <lib/lib.h>
-#include <lib/stdio.h>
-#include <lib/stdlib.h>
-#include <memory/alloc.h>
-#include <memory/paging.h>
-#include <multiboot.h>
-#include <stddef.h>
-#include <system.h>
-
-struct rsdt *rsdt;
-struct fadt *fadt;
-struct hpet *hpet;
-struct madt *madt;
-
-int check_sum(struct sdt_header *header)
-{
- u8 sum = 0;
-
- for (u32 i = 0; i < header->length; i++)
- sum += ((char *)header)[i];
-
- return sum == 0;
-}
-
-void acpi_init(struct rsdp *rsdp)
-{
- // TODO: Fix ACPI table discovering (HPET & MADT missing)
- // TODO: Fix ACPI breaking VESA (why?!)
-
- struct sdt_header *header = (struct sdt_header *)malloc(sizeof(struct sdt_header));
- rsdt = (struct rsdt *)malloc(sizeof(struct rsdt));
- fadt = (struct fadt *)malloc(sizeof(struct fadt));
- hpet = (struct hpet *)malloc(sizeof(struct hpet));
- madt = (struct madt *)malloc(sizeof(struct madt));
-
- if (strncmp(rsdp->signature, "RSD PTR ", 8) == 0) {
- memcpy(rsdt, rsdp->rsdt_address, sizeof(struct rsdt) + 32);
- debug("Found RSDT");
- if (!check_sum((struct sdt_header *)rsdt)) {
- warn("Corrupted RSDT!");
- } else {
- u32 *pointer = (u32 *)(rsdt + 1);
- u32 *end = (u32 *)((u8 *)rsdt + rsdt->header.length);
-
- while (pointer < end) {
- u32 address = *pointer++;
- memcpy(header, (void *)address, sizeof(struct sdt_header));
-
- if (strncmp(header->signature, "FACP", 4) == 0) {
- debug("Found FADT");
- memcpy(fadt, (void *)address, sizeof(struct fadt));
- if (!check_sum((struct sdt_header *)fadt))
- warn("Corrupted FADT!");
- } else if (strncmp(header->signature, "HPET", 4) == 0) {
- debug("Found HPET");
- memcpy(hpet, (void *)address, sizeof(struct hpet));
- if (!check_sum((struct sdt_header *)hpet))
- warn("Corrupted HPET!");
- } else if (strncmp(header->signature, "APIC", 4) == 0) {
- debug("Found MADT");
- memcpy(madt, (void *)address, sizeof(struct madt));
- if (!check_sum((struct sdt_header *)madt))
- warn("Corrupted MADT!");
- }
- }
- }
- } else {
- warn("Wrong RSD signature!");
- }
- free(header);
-}
-
-void acpi_old_init(struct multiboot_tag_old_acpi *tag)
-{
- // acpi_init((struct rsdp *)tag->rsdp);
-}
-
-void acpi_new_init(struct multiboot_tag_new_acpi *tag)
-{
- // acpi_init((struct rsdp *)tag->rsdp);
-}
-
-void acpi_poweroff()
-{
- // TODO: Add APCI poweroff support
- cli();
- outw(0x604, 0x2000); // QEMU
- outw(0xB004, 0x2000); // Bochs
- outw(0x4004, 0x3400); // VirtualBox
- halt_loop();
-}
-
-void reboot()
-{
- cli();
- if (fadt->header.revision >= 2 && fadt->flags.reset_support) {
- debug("Reset support!");
- outb(fadt->reset_reg.address, fadt->reset_value);
- halt_loop();
- } else {
- u8 good = 0x02;
- while (good & 0x02)
- good = inb(0x64);
- outb(0x64, 0xFE);
- halt_loop();
- }
-}
\ No newline at end of file
--
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