maksw/nt-lite
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replace nob with ms' build, move disk creation to build.bat, major comment cleanup, remove old and stupid tests, overhaul interrupt management with per-CPU vector allocation, affinity migration and safe teardown, add proper IOAPIC routing and PCI MSI/MSI-X/INTx support, migrate drivers to the new interrupt API, integrate ACPICA with a proper OS services layer, move ACPI firmware events, power button handling and S5 shutdown into acpi.sys, add parallel driver startup and atomic publication, replace PnP arrays with dynamic lists, redesign service startup again to be asynchronous, add delayed startup mode for services, allow omitting keys in services.ini, fix acpi ec deferred work handling, fix kernel threads having garbage exit code.

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maksw committed 2026-10-28 15:18:43 +01:00
1 parent d36f19509c
commit 36eef8f58d
696 files changed
+147281 -7530
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code/kernel/hal/hal_main.c
+12 -114
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@@ -39,10 +39,13 @@ static HAL_API gApi = {
.Start = HalApicStartProcessor,
},
.InterruptController = {
.RouteIrq = HalApicRouteIrq,
.MaskIrq = HalApicMaskIrq,
.UnmaskIrq = HalApicUnmaskIrq,
.RouteGsi = HalApicRouteGsi,
.MaskGsi = HalApicMaskGsi,
.ResolveIsa = HalApicResolveIsa,
.SendEoi = HalApicSendEoi,
.SetTaskPriority = HalApicSetTaskPriority,
.QueryTaskPriority = HalApicQueryTaskPriority,
.VectorPending = HalApicVectorPending,
.InitializeCurrentProcessor = HalApicInitializeCurrentProcessor,
.SendProcessorInterrupt = HalApicSendProcessorInterrupt,
.SendProcessorNmi = HalApicSendProcessorNmi,
@@ -122,12 +125,7 @@ typedef struct ACPI_FIXED_REGISTER {
static ACPI_FIXED_REGISTER gPm1aCnt;
static ACPI_FIXED_REGISTER gPm1bCnt;
static ACPI_FIXED_REGISTER gPm1aStatus;
static ACPI_FIXED_REGISTER gPm1bStatus;
static ACPI_FIXED_REGISTER gPm1aEnable;
static ACPI_FIXED_REGISTER gPm1bEnable;
static uint16_t gSciIrq = 0;
static bool gFixedPowerButtonArmed = false;
static ACPI_FIXED_REGISTER gSleepControl;
static uint32_t gLegacyPm1aPort = 0;
static uint32_t gLegacyPm1bPort = 0;
@@ -179,13 +177,6 @@ void* HalPhysicalToVirtual(uint64_t phys) {
// systems may put the real DSDT and PM1 control registers in the extended
// X_* fields, so do not rely only on the legacy 32-bit fields.
#define FADT_SCI_INT_OFFSET 46u
#define FADT_PM1A_EVT_BLK_OFFSET 56u
#define FADT_PM1B_EVT_BLK_OFFSET 60u
#define FADT_PM1_EVT_LEN_OFFSET 88u
#define FADT_X_PM1A_EVT_BLK_OFFSET 148u
#define FADT_X_PM1B_EVT_BLK_OFFSET 160u
#define FADT_FLAG_POWER_BUTTON (1u << 4)
#define ACPI_PM1_POWER_BUTTON_BIT (1u << 8)
#define FADT_DSDT_OFFSET 40u
#define FADT_SMI_CMD_OFFSET 48u
#define FADT_ACPI_ENABLE_OFFSET 52u
@@ -217,7 +208,6 @@ typedef struct {
static ACPI_FIXED_REGISTER gResetRegister;
static uint8_t gResetValue;
// Implements the acpi Read U32 operation.
static uint32_t AcpiReadU32(const void* table, uint32_t tableLen, uint32_t off) {
uint32_t value = 0;
if (off + sizeof(value) <= tableLen)
@@ -225,7 +215,6 @@ static uint32_t AcpiReadU32(const void* table, uint32_t tableLen, uint32_t off)
return value;
}
// Implements the acpi Read U64 operation.
static uint64_t AcpiReadU64(const void* table, uint32_t tableLen, uint32_t off) {
uint64_t value = 0;
if (off + sizeof(value) <= tableLen)
@@ -310,77 +299,6 @@ static void AcpiWriteFixedRegister(const ACPI_FIXED_REGISTER* reg, uint32_t valu
else *(volatile uint32_t*)address = value;
}
// Selects a PM1 event block as two adjacent equal-width status and enable registers.
static void AcpiConfigurePm1EventBlock(const void* fadt, uint32_t len,
uint32_t legacyOffset, uint32_t gasOffset,
uint8_t halfLength, ACPI_FIXED_REGISTER* status,
ACPI_FIXED_REGISTER* enable) {
ACPI_FIXED_REGISTER block = {0};
uint32_t legacy = AcpiReadU32(fadt, len, legacyOffset);
if (legacy && legacy <= 0xFFFFu) {
block.AddressSpaceId = 1;
block.Address = legacy;
}
ACPI_FIXED_REGISTER extended = {0};
if (AcpiReadGasRegister(fadt, len, gasOffset, &extended)) block = extended;
if (!block.Address || (block.AddressSpaceId == 1 &&
block.Address + halfLength * 2u - 1u > 0xFFFFu)) return;
block.WidthBytes = halfLength;
*status = block;
block.Address += halfLength;
*enable = block;
}
// Reports the fixed-feature power-button interrupt supported by this HAL.
static KSTATUS AcpiQueryFixedButtonIrq(uint8_t* irqOut) {
if (!irqOut) return NTLSTATUS_INVALID_PARAMETER;
// A FADT control-method power button requires AML evaluation, not PM1 polling.
if (gHwReducedAcpi || (gFadtFlags & FADT_FLAG_POWER_BUTTON) ||
!gSciIrq || gSciIrq >= 16u || !gPm1aStatus.Address || !gPm1aEnable.Address ||
!HalApicCanRouteIrq((uint8_t)gSciIrq))
return NTLSTATUS_NOT_SUPPORTED;
*irqOut = (uint8_t)gSciIrq;
return NTLSTATUS_SUCCESS;
}
// Discards any stale press then enables the PM1 fixed power-button SCI.
static KSTATUS AcpiArmFixedButton(void) {
uint8_t irq;
KSTATUS status = AcpiQueryFixedButtonIrq(&irq);
if (!KSUCCESS(status)) return status;
// No SCI_EN means firmware still owns ACPI events. Never steal ownership
// through SMI_CMD just to install a power-button handler during boot.
if (!(AcpiReadFixedRegister(&gPm1aCnt) & 1u))
return NTLSTATUS_NOT_SUPPORTED;
AcpiWriteFixedRegister(&gPm1aStatus, ACPI_PM1_POWER_BUTTON_BIT);
if (gPm1bStatus.Address)
AcpiWriteFixedRegister(&gPm1bStatus, ACPI_PM1_POWER_BUTTON_BIT);
uint32_t enabled = AcpiReadFixedRegister(&gPm1aEnable);
AcpiWriteFixedRegister(&gPm1aEnable, enabled | ACPI_PM1_POWER_BUTTON_BIT);
if (gPm1bEnable.Address) {
enabled = AcpiReadFixedRegister(&gPm1bEnable);
AcpiWriteFixedRegister(&gPm1bEnable, enabled | ACPI_PM1_POWER_BUTTON_BIT);
}
gFixedPowerButtonArmed = true;
return NTLSTATUS_SUCCESS;
}
// Acknowledges the fixed-button source only; the SCI may carry unrelated events.
static bool AcpiConsumeFixedButton(void) {
if (!gFixedPowerButtonArmed) return false;
bool pressed = false;
if (AcpiReadFixedRegister(&gPm1aStatus) & ACPI_PM1_POWER_BUTTON_BIT) {
AcpiWriteFixedRegister(&gPm1aStatus, ACPI_PM1_POWER_BUTTON_BIT);
pressed = true;
}
if (gPm1bStatus.Address &&
(AcpiReadFixedRegister(&gPm1bStatus) & ACPI_PM1_POWER_BUTTON_BIT)) {
AcpiWriteFixedRegister(&gPm1bStatus, ACPI_PM1_POWER_BUTTON_BIT);
pressed = true;
}
return pressed;
}
// Detects whether PM1 control is using the standard Intel PCH PMBASE layout.
static void AcpiDetectIntelPchPmBase(void) {
gIntelPchPmBase = 0;
@@ -486,7 +404,6 @@ static const uint8_t* AmlParseNameString(const uint8_t* p, const uint8_t* end,
return p;
}
// Implements the aml Read Integer operation.
static bool AmlReadInteger(const uint8_t** pp, const uint8_t* end, uint8_t* out) {
const uint8_t* p = *pp;
if (p >= end) return false;
@@ -580,10 +497,6 @@ static void ParseFadt(const ACPISDTHeader* header) {
memset(&gPm1aCnt, 0, sizeof(gPm1aCnt));
memset(&gPm1bCnt, 0, sizeof(gPm1bCnt));
memset(&gPm1aStatus, 0, sizeof(gPm1aStatus));
memset(&gPm1bStatus, 0, sizeof(gPm1bStatus));
memset(&gPm1aEnable, 0, sizeof(gPm1aEnable));
memset(&gPm1bEnable, 0, sizeof(gPm1bEnable));
gSciIrq = 0;
if (len >= FADT_SCI_INT_OFFSET + sizeof(gSciIrq))
memcpy(&gSciIrq, (const uint8_t*)fadt + FADT_SCI_INT_OFFSET, sizeof(gSciIrq));
@@ -628,16 +541,6 @@ static void ParseFadt(const ACPISDTHeader* header) {
if (gHwReducedAcpi)
(void)AcpiReadByteGasRegister(fadt, len, FADT_SLEEP_CONTROL_OFFSET, &gSleepControl);
uint8_t eventLength = FADT_PM1_EVT_LEN_OFFSET < len ?
*((const uint8_t*)fadt + FADT_PM1_EVT_LEN_OFFSET) : 0u;
if (!gHwReducedAcpi && (eventLength == 4u || eventLength == 8u)) {
uint8_t half = eventLength / 2u;
AcpiConfigurePm1EventBlock(fadt, len, FADT_PM1A_EVT_BLK_OFFSET,
FADT_X_PM1A_EVT_BLK_OFFSET, half, &gPm1aStatus, &gPm1aEnable);
AcpiConfigurePm1EventBlock(fadt, len, FADT_PM1B_EVT_BLK_OFFSET,
FADT_X_PM1B_EVT_BLK_OFFSET, half, &gPm1bStatus, &gPm1bEnable);
}
gSmiCommandPort = AcpiReadU32(fadt, len, FADT_SMI_CMD_OFFSET);
gAcpiEnableValue = FADT_ACPI_ENABLE_OFFSET < len
? *((const uint8_t*)fadt + FADT_ACPI_ENABLE_OFFSET)
@@ -652,10 +555,12 @@ static void ParseFadt(const ACPISDTHeader* header) {
centuryRegister = *((const uint8_t*)fadt + FADT_CENTURY_OFFSET);
HalRtcSetCenturyRegister(centuryRegister);
HalDbgPrint("HAL: FADT flags=0x%08x hw_reduced=%u PM1a_CNT=%u:0x%016llx legacy=0x%04x "
HalDbgPrint("HAL: FADT flags=0x%08x sci_irq=%u power_button=%s hw_reduced=%u PM1a_CNT=%u:0x%016llx legacy=0x%04x "
"PM1b_CNT=%u:0x%016llx legacy=0x%04x SLEEP_CTL=%u:0x%016llx "
"SMI=0x%08x DSDT=0x%016llx RTC_CENTURY=0x%02x\n",
gFadtFlags, gHwReducedAcpi ? 1u : 0u,
gFadtFlags, (unsigned)gSciIrq,
(gFadtFlags & (1u << 4)) ? "control-method" : "fixed",
gHwReducedAcpi ? 1u : 0u,
gPm1aCnt.AddressSpaceId, gPm1aCnt.Address, gLegacyPm1aPort,
gPm1bCnt.AddressSpaceId, gPm1bCnt.Address, gLegacyPm1bPort,
gSleepControl.AddressSpaceId, gSleepControl.Address,
@@ -674,7 +579,6 @@ static void ParseFadt(const ACPISDTHeader* header) {
}
}
// Implements the add Cpu Record operation.
static void HalAddCpuRecord(uint32_t uid, uint32_t lapicId, uint32_t flags) {
if (gCpuTopology.Count >= HAL_MAX_PROCESSORS)
return;
@@ -711,7 +615,7 @@ static void ParseMadt(MADT* madt) {
gIoapicPhys = *(uint32_t*)(p + 4);
uint32_t base;
memcpy(&base, p + 8, sizeof(base));
HalApicSetGsiBase(base);
HalApicAddIoapic(*(uint32_t*)(p + 4), base);
} else if (type == 2 && len >= 10 && p[2] == 0) { // ISA source override
uint32_t gsi;
uint16_t flags;
@@ -732,7 +636,6 @@ static void ParseMadt(MADT* madt) {
}
}
// Implements the walk Acpi operation.
static void WalkAcpi(uintptr_t rsdpPhys) {
if (!rsdpPhys) return;
@@ -995,8 +898,7 @@ HAL_ENTRY KSTATUS HalInitialize(const HAL_INIT_PARAMS* initParams) {
HalDbgPrint("HAL: LAPIC=%016llx IOAPIC=%016llx HPET=%016llx\n",
gLapicPhys, gIoapicPhys, gHpetPhys);
HalApicSetSciIrq(gSciIrq);
HalApicInitialize(gLapicPhys, gIoapicPhys);
HalApicInitialize(gLapicPhys);
HalDbgPrint("HAL: local APIC mode=%s BSP_ID=%u\n",
HalApicUsingX2Apic() ? "x2APIC" : "xAPIC",
HalApicGetBootProcessorId());
@@ -1008,9 +910,6 @@ HAL_ENTRY KSTATUS HalInitialize(const HAL_INIT_PARAMS* initParams) {
HalPciInitialize(&gApi.Pci);
gApi.Power.Shutdown = HalShutdown;
gApi.Power.Reset = HalReset;
gApi.Power.QueryFixedButtonIrq = AcpiQueryFixedButtonIrq;
gApi.Power.ArmFixedButton = AcpiArmFixedButton;
gApi.Power.ConsumeFixedButton = AcpiConsumeFixedButton;
AcpiDetectIntelPchPmBase();
gInitialised = 1;
@@ -1026,7 +925,6 @@ HAL_ENTRY KSTATUS HalInitialize(const HAL_INIT_PARAMS* initParams) {
gApi.Timer.Stall(1); // Micro-stalls
}
HalDbgPrint("HAL: initialisation complete.\n");
return NTLSTATUS_SUCCESS;
}