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-rw-r--r--kernel/src/acpi/acpi.c141
-rw-r--r--kernel/src/acpi/acpi.h106
2 files changed, 0 insertions, 247 deletions
diff --git a/kernel/src/acpi/acpi.c b/kernel/src/acpi/acpi.c
deleted file mode 100644
index ef1fb76..0000000
--- a/kernel/src/acpi/acpi.c
+++ /dev/null
@@ -1,141 +0,0 @@
-#include <panic.h>
-#include <string.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <sys.h>
-
-#include "acpi.h"
-#include "boot/tag.h"
-#include "print.h"
-
-static struct RootSystemDescriptionTable *rsdt;
-static struct FixedACPIDescriptionTable *fadt;
-
-static uint16_t SLP_TYPa;
-static uint16_t SLP_TYPb;
-static uint16_t SLP_EN;
-static uint16_t SCI_EN;
-
-static bool is_init = false;
-
-bool checksum(uint8_t *data, size_t len) {
- unsigned char sum = 0;
- for (size_t i = 0; i < len; i++)
- sum += data[i];
- return sum == 0;
-}
-
-static void *find_fadt(void) {
- int entries = (rsdt->header.length - sizeof(rsdt->header)) / 4;
-
- for (int i = 0; i < entries; i++) {
- uintptr_t sdt_ptr = rsdt->sdt_table[i];
- struct SystemDescriptionTableHeader *h = (void*) sdt_ptr;
- if (!strncmp(h->signature, "FACP", 4))
- return (void *) h;
- }
-
- return NULL;
-}
-
-static int read_s5_addr(void) {
- uintptr_t ptr = fadt->dsdt;
- char *s5_addr = (void*) (ptr + 36);
-
- int dsdt_len = *((int*) (ptr+1)) - 36;
- while (0 < dsdt_len--) {
- if ( memcmp(s5_addr, "_S5_", 4) == 0)
- break;
- s5_addr++;
- }
-
- if (dsdt_len > 0) {
- // check for valid AML structure
- if ( ( *(s5_addr-1) == 0x08 || ( *(s5_addr-2) == 0x08 && *(s5_addr-1) == '\\') ) && *(s5_addr+4) == 0x12 ) {
- s5_addr += 5;
- s5_addr += ((*s5_addr &0xC0)>>6) +2; // calculate PkgLength size
-
- if (*s5_addr == 0x0A)
- s5_addr++; // skip byteprefix
- SLP_TYPa = *(s5_addr)<<10;
- s5_addr++;
-
- if (*s5_addr == 0x0A)
- s5_addr++; // skip byteprefix
- SLP_TYPb = *(s5_addr)<<10;
-
- SLP_EN = 1<<13;
- SCI_EN = 1;
-
- } else {
- errork("\\_S5 parse error.");
- return 1;
- }
- } else {
- errork("\\_S5 not present.");
- return 1;
- }
- return 0;
-}
-
-void acpi_init(void) {
-
- is_init = false;
-
- debugk("Loading ACPI");
-
- struct BootTag *tag;
- if(!get_boot_tag(ID_RSDP, &tag)) {
- errork("Could not find RSDP");
- return;
- }
-
- debugk("Loading RSDT");
-
- struct RootSystemDescriptionPointer *rsdp = tag->data.rsdp;
- if (!checksum((uint8_t*) rsdp, sizeof(struct RootSystemDescriptionPointer))) {
- errork("RSDP checksum failed to validate");
- return;
- }
-
- uintptr_t rsdt_ptr = rsdp->rsdt_address;
- rsdt = (void *) rsdt_ptr;
- if (!checksum((uint8_t*) &rsdt->header, rsdt->header.length)) {
- errork("RSDT checksum failed to validate");
- return;
- }
-
- debugk("Loading FADT");
-
- fadt = find_fadt();
- if (fadt == NULL) {
- errork("Could not find FADT");
- return;
- }
-
- if (!checksum((uint8_t*) &fadt->header, fadt->header.length)) {
- errork("FADT checksum failed to validate");
- return;
- }
-
- debugk("Reading \\_S5 Addr");
-
- if (read_s5_addr()) {
- return;
- }
-
- outb(fadt->smi_command_port,fadt->acpi_enable);
-
- succek("ACPI has been loaded");
- is_init = true;
-}
-
-void acpi_poweroff(void) {
- if (is_init) {
- outw((unsigned int) fadt->pm1_a_control_block, SLP_TYPb | SLP_EN);
- panic("failed to shutdown");
- } else {
- errork("Cannot shutdown, ACPI not loaded");
- }
-}
diff --git a/kernel/src/acpi/acpi.h b/kernel/src/acpi/acpi.h
deleted file mode 100644
index 889497e..0000000
--- a/kernel/src/acpi/acpi.h
+++ /dev/null
@@ -1,106 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-struct RootSystemDescriptionPointer {
- char signature[8];
- uint8_t checksum;
- char oemid[6];
- uint8_t revision;
- uint32_t rsdt_address;
-};
-
-struct SystemDescriptionTableHeader {
- char signature[4];
- uint32_t length;
- uint8_t revision;
- uint8_t checksum;
- char oem_id[6];
- char oem_table_id[8];
- uint32_t oem_revision;
- uint32_t creator_id;
- uint32_t creator_revision;
-};
-
-struct RootSystemDescriptionTable {
- struct SystemDescriptionTableHeader header;
- uint32_t sdt_table[];
-};
-
-struct GenericAddressStructure {
- uint8_t address_space;
- uint8_t bit_width;
- uint8_t bit_offset;
- uint8_t access_size;
- uint64_t address;
-};
-
-struct FixedACPIDescriptionTable {
- struct SystemDescriptionTableHeader header;
- uint32_t firmware_ctrl;
- uint32_t dsdt;
-
- // field used in ACPI 1.0; no longer in use, for compatibility only
- uint8_t reserved;
-
- uint8_t preferred_power_management_profile;
- uint16_t sci_interrupt;
- uint32_t smi_command_port;
- uint8_t acpi_enable;
- uint8_t acpi_disable;
- uint8_t s4bios_req;
- uint8_t pstate_control;
- uint32_t pm1_a_event_block;
- uint32_t pm1_b_event_block;
- uint32_t pm1_a_control_block;
- uint32_t pm1_b_control_block;
- uint32_t pm2_control_block;
- uint32_t pm_timer_block;
- uint32_t gpe0_block;
- uint32_t gpe1_block;
- uint8_t pm1_event_length;
- uint8_t pm1_control_length;
- uint8_t pm2_control_length;
- uint8_t pm_timer_length;
- uint8_t gpe0_length;
- uint8_t gpe1_length;
- uint8_t gpe1_base;
- uint8_t cstate_control;
- uint16_t worst_c2_latency;
- uint16_t worst_c3_latency;
- uint16_t flush_size;
- uint16_t flush_stride;
- uint8_t duty_offset;
- uint8_t duty_width;
- uint8_t day_alarm;
- uint8_t month_alarm;
- uint8_t century;
-
- // reserved in ACPI 1.0; used since ACPI 2.0+
- uint16_t boot_architecture_flags;
-
- uint8_t reserved_2;
- uint32_t flags;
-
- // 12 byte structure; see below for details
- struct GenericAddressStructure reset_reg;
-
- uint8_t reset_value;
- uint8_t reserved_3[3];
-
- // 64bit pointers - Available on ACPI 2.0+
- uint64_t x_firmware_control;
- uint64_t x_dsdt;
-
- struct GenericAddressStructure x_pm1_a_event_block;
- struct GenericAddressStructure x_pm1_b_event_block;
- struct GenericAddressStructure x_pm1_a_control_block;
- struct GenericAddressStructure x_pm1_b_control_block;
- struct GenericAddressStructure x_pm2_control_block;
- struct GenericAddressStructure x_pm_timer_block;
- struct GenericAddressStructure x_gpe0_block;
- struct GenericAddressStructure x_gpe1_block;
-};
-
-void acpi_init(void);
-void acpi_poweroff(void);
generated by cgit v1.2.3-freya (git 2.51.0) at 2025-09-22 23:46:17 +0000