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targets: minimal uefi target support (#5452)
* runtime: split baremetal memory setup * runtime: extract Windows PE globals scan helper * compileopts,builder: add target linker flavor override * machine,runtime,targets: add minimal uefi-amd64 target * runtime,examples: add clean UEFI exit path test * machine,x86: fix amd64 ABI stack handling * machine/uefi: add CHAR16 conversion helpers * machine/uefi: add loaded image protocol support * runtime: add UEFI PE globals support * machine,runtime,x86: add UEFI time and text output support * machine,runtime,x86: add UEFI text and time support * machine,runtime,examples: add UEFI text input support * machine,examples: add UEFI graphics output support * add rest of STOP methods (direct UEFI ABI only) * runtime: fix UEFI sleep tick conversion * machine/uefi: make text input waits cooperative * address TestClangAttributes/uefi-amd64 failure * address TestConfigLinkerFlavor bug * uefi: move raw bindings to device package * strip down implementation to bare minimum * amd64: rename x86 package * do git restore upstream/dev for src/net * add smoketest for uefi-amd64; add required zeroSizeAllocPtr constant * address PR issues: remove unused files; make putchar() insert '\r' before '\n' * swap lines around
1 parent 3797e89 commit 9c2eafc

13 files changed

Lines changed: 318 additions & 5 deletions

‎GNUmakefile‎

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@@ -657,6 +657,8 @@ smoketest: testchdir
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@$(MD5SUM) test.hex
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$(TINYGO) build -size short -o test.hex -target=pico2-ice examples/blinky1
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@$(MD5SUM) test.hex
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$(TINYGO) build -o test.efi -target=uefi-amd64 examples/test
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@$(MD5SUM) test.efi
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# test simulated boards on play.tinygo.org
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ifneq ($(WASM), 0)
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GOOS=js GOARCH=wasm $(TINYGO) build -size short -o test.wasm -tags=arduino_uno examples/blinky1

‎builder/builder_test.go‎

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@@ -37,6 +37,7 @@ func TestClangAttributes(t *testing.T) {
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"nintendoswitch",
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"riscv-qemu",
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"tkey",
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"uefi-amd64",
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"wasip1",
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"wasip2",
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"wasm",

‎src/machine/machine_uefi.go‎

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//go:build uefi
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package machine
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import (
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deviceuefi "device/uefi"
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)
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const deviceName = "UEFI"
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type (
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EFI_STATUS = deviceuefi.EFI_STATUS
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TextOutput = deviceuefi.TextOutput
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Error = deviceuefi.Error
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)
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const (
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EFI_SUCCESS = deviceuefi.EFI_SUCCESS
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EFI_LOAD_ERROR = deviceuefi.EFI_LOAD_ERROR
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EFI_INVALID_PARAMETER = deviceuefi.EFI_INVALID_PARAMETER
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EFI_UNSUPPORTED = deviceuefi.EFI_UNSUPPORTED
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EFI_BAD_BUFFER_SIZE = deviceuefi.EFI_BAD_BUFFER_SIZE
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EFI_BUFFER_TOO_SMALL = deviceuefi.EFI_BUFFER_TOO_SMALL
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EFI_NOT_READY = deviceuefi.EFI_NOT_READY
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EFI_DEVICE_ERROR = deviceuefi.EFI_DEVICE_ERROR
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EFI_WRITE_PROTECTED = deviceuefi.EFI_WRITE_PROTECTED
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EFI_OUT_OF_RESOURCES = deviceuefi.EFI_OUT_OF_RESOURCES
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EFI_VOLUME_CORRUPTED = deviceuefi.EFI_VOLUME_CORRUPTED
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EFI_VOLUME_FULL = deviceuefi.EFI_VOLUME_FULL
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EFI_NO_MEDIA = deviceuefi.EFI_NO_MEDIA
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EFI_MEDIA_CHANGED = deviceuefi.EFI_MEDIA_CHANGED
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EFI_NOT_FOUND = deviceuefi.EFI_NOT_FOUND
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EFI_ACCESS_DENIED = deviceuefi.EFI_ACCESS_DENIED
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EFI_NO_RESPONSE = deviceuefi.EFI_NO_RESPONSE
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EFI_NO_MAPPING = deviceuefi.EFI_NO_MAPPING
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EFI_TIMEOUT = deviceuefi.EFI_TIMEOUT
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EFI_NOT_STARTED = deviceuefi.EFI_NOT_STARTED
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EFI_ALREADY_STARTED = deviceuefi.EFI_ALREADY_STARTED
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EFI_ABORTED = deviceuefi.EFI_ABORTED
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EFI_ICMP_ERROR = deviceuefi.EFI_ICMP_ERROR
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EFI_TFTP_ERROR = deviceuefi.EFI_TFTP_ERROR
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EFI_PROTOCOL_ERROR = deviceuefi.EFI_PROTOCOL_ERROR
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EFI_INCOMPATIBLE_VERSION = deviceuefi.EFI_INCOMPATIBLE_VERSION
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EFI_SECURITY_VIOLATION = deviceuefi.EFI_SECURITY_VIOLATION
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EFI_CRC_ERROR = deviceuefi.EFI_CRC_ERROR
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EFI_END_OF_MEDIA = deviceuefi.EFI_END_OF_MEDIA
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EFI_END_OF_FILE = deviceuefi.EFI_END_OF_FILE
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EFI_INVALID_LANGUAGE = deviceuefi.EFI_INVALID_LANGUAGE
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EFI_COMPROMISED_DATA = deviceuefi.EFI_COMPROMISED_DATA
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EFI_IP_ADDRESS_CONFLICT = deviceuefi.EFI_IP_ADDRESS_CONFLICT
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EFI_HTTP_ERROR = deviceuefi.EFI_HTTP_ERROR
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)
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var (
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ErrLoadError = deviceuefi.ErrLoadError
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ErrInvalidParameter = deviceuefi.ErrInvalidParameter
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ErrUnsupported = deviceuefi.ErrUnsupported
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ErrBadBufferSize = deviceuefi.ErrBadBufferSize
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ErrBufferTooSmall = deviceuefi.ErrBufferTooSmall
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ErrNotReady = deviceuefi.ErrNotReady
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ErrDeviceError = deviceuefi.ErrDeviceError
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ErrWriteProtected = deviceuefi.ErrWriteProtected
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ErrOutOfResources = deviceuefi.ErrOutOfResources
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ErrVolumeCorrupted = deviceuefi.ErrVolumeCorrupted
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ErrVolumeFull = deviceuefi.ErrVolumeFull
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ErrNoMedia = deviceuefi.ErrNoMedia
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ErrMediaChanged = deviceuefi.ErrMediaChanged
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ErrNotFound = deviceuefi.ErrNotFound
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ErrAccessDenied = deviceuefi.ErrAccessDenied
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ErrNoResponse = deviceuefi.ErrNoResponse
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ErrNoMapping = deviceuefi.ErrNoMapping
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ErrTimeout = deviceuefi.ErrTimeout
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ErrNotStarted = deviceuefi.ErrNotStarted
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ErrAlreadyStarted = deviceuefi.ErrAlreadyStarted
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ErrAborted = deviceuefi.ErrAborted
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ErrICMPError = deviceuefi.ErrICMPError
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ErrTFTPError = deviceuefi.ErrTFTPError
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ErrProtocolError = deviceuefi.ErrProtocolError
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ErrIncompatibleVersion = deviceuefi.ErrIncompatibleVersion
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ErrSecurityViolation = deviceuefi.ErrSecurityViolation
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ErrCRCError = deviceuefi.ErrCRCError
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ErrEndOfMedia = deviceuefi.ErrEndOfMedia
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ErrEndOfFile = deviceuefi.ErrEndOfFile
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ErrInvalidLanguage = deviceuefi.ErrInvalidLanguage
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ErrCompromisedData = deviceuefi.ErrCompromisedData
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ErrIPAddressConflict = deviceuefi.ErrIPAddressConflict
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ErrHTTPError = deviceuefi.ErrHTTPError
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)
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func ConsoleOut() *TextOutput {
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return deviceuefi.ConsoleOut()
93+
}
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func StandardError() *TextOutput {
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return deviceuefi.StandardError()
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}
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func StatusError(status EFI_STATUS) *Error {
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return deviceuefi.StatusError(status)
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}
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func (Pin) Configure(PinConfig) {
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}
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func (Pin) Set(bool) {
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}
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func (Pin) Get() bool {
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return false
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}

‎src/runtime/baremetal_memory.go‎

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@@ -1,4 +1,4 @@
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//go:build baremetal
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//go:build baremetal && !uefi
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package runtime
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‎src/runtime/gc_globals.go‎

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@@ -1,4 +1,4 @@
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//go:build baremetal || tinygo.wasm
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//go:build (baremetal || tinygo.wasm) && !uefi
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package runtime
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‎src/runtime/gc_leaking_uefi.go‎

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//go:build gc.leaking && uefi
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package runtime
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import _ "unsafe"
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//go:export tinygo_scanstack
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func tinygo_scanstack() {
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}

‎src/runtime/interrupt/interrupt_none.go‎

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@@ -1,4 +1,4 @@
1-
//go:build !baremetal || tkey
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//go:build !baremetal || tkey || uefi
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package interrupt
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‎src/runtime/os_windows_pe.go‎

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@@ -1,4 +1,4 @@
1-
//go:build windows
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//go:build windows || uefi
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package runtime
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‎src/runtime/runtime_uefi.go‎

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//go:build uefi
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package runtime
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import "device/uefi"
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const zeroSizeAllocPtr uintptr = 16
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//go:linkname procPin sync/atomic.runtime_procPin
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func procPin() {
11+
}
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13+
//go:linkname procUnpin sync/atomic.runtime_procUnpin
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func procUnpin() {
15+
}
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var heapSize uintptr = 64 * 1024 * 1024
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var heapStart, heapEnd uintptr
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var stackTop uintptr
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var allocatePagesAddress uefi.EFI_PHYSICAL_ADDRESS
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var waitForEventsFunction = func() {
22+
uefi.CpuPause()
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}
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func ticks() timeUnit {
26+
return timeUnit(uefi.Ticks())
27+
}
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func nanosecondsToTicks(ns int64) timeUnit {
30+
frequency := int64(uefi.TicksFrequency())
31+
if frequency == 0 {
32+
return timeUnit(ns)
33+
}
34+
seconds := ns / 1000000000
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remainder := ns % 1000000000
36+
return timeUnit(seconds*frequency + (remainder*frequency)/1000000000)
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}
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func ticksToNanoseconds(t timeUnit) int64 {
40+
frequency := int64(uefi.TicksFrequency())
41+
if frequency == 0 {
42+
return int64(t)
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}
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return int64(t) * 1000000000 / frequency
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}
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func sleepTicks(d timeUnit) {
48+
if d == 0 {
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return
50+
}
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end := ticks() + d
52+
for ticks() < end {
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uefi.CpuPause()
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}
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}
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func putchar(c byte) {
58+
if c == '\n' {
59+
buf := [4]uefi.CHAR16{'\r', 0, '\n', 0}
60+
uefi.ST().ConOut.OutputString(&buf[0])
61+
return
62+
}
63+
buf := [2]uefi.CHAR16{uefi.CHAR16(c), 0}
64+
uefi.ST().ConOut.OutputString(&buf[0])
65+
}
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func exit(code int) {
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uefi.BS().Exit(uefi.GetImageHandle(), uefi.EFI_STATUS(code), 0, nil)
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}
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func abort() {
72+
uefi.BS().Exit(uefi.GetImageHandle(), uefi.EFI_ABORTED, 0, nil)
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}
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func preinit() {
76+
uefi.BS().SetWatchdogTimer(0, 0, 0, nil)
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if !growHeap() {
78+
runtimePanic("could not allocate initial UEFI heap")
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}
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}
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func growHeap() bool {
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newHeapSize := ((heapSize * 4) / 3) &^ 4095
84+
for newHeapSize >= heapSize {
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pages := newHeapSize / 4096
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status := uefi.BS().AllocatePages(
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uefi.AllocateAnyPages,
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uefi.EfiLoaderData,
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uefi.UINTN(pages),
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&allocatePagesAddress,
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)
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if status == uefi.EFI_SUCCESS {
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heapStart = uintptr(allocatePagesAddress)
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heapSize = newHeapSize
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setHeapEnd(heapStart + heapSize)
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return true
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}
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if status != uefi.EFI_OUT_OF_RESOURCES {
99+
return false
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}
101+
newHeapSize /= 2
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}
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return false
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}
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func SetWaitForEvents(f func()) {
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waitForEventsFunction = f
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}
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func waitForEvents() {
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waitForEventsFunction()
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}
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//go:noinline
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func runMain() {
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run()
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}
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func buffered() int {
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return 0
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}
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func getchar() byte {
124+
return 0
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}
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//export efi_main
128+
func main(imageHandle uintptr, systemTable uintptr) uintptr {
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uefi.Init(imageHandle, systemTable)
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preinit()
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stackTop = getCurrentStackPointer()
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runMain()
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if heapStart != 0 {
135+
uefi.BS().FreePages(uefi.EFI_PHYSICAL_ADDRESS(heapStart), uefi.UINTN(heapSize/4096))
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}
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return 0
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}

‎src/runtime/scheduler_cooperative.go‎

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@@ -248,6 +248,9 @@ func sleep(duration int64) {
248248
if duration <= 0 {
249249
return
250250
}
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if schedulerSleepCustom(duration) {
252+
return
253+
}
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252255
addSleepTask(task.Current(), nanosecondsToTicks(duration))
253256
task.Pause()

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