40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
#include <serial.h>
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#include <efilib.h>
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serial_context g_serial;
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void serial_init(EFI_SERIAL_IO_PROTOCOL *SerialIo) {
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g_serial.SerialIo = SerialIo;
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uefi_call_wrapper((void*)SerialIo->Reset, 1, SerialIo);
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}
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void serial_write_char(char c) {
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if (!g_serial.SerialIo) {
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uefi_call_wrapper((void*)ST->ConOut->OutputString, 2, ST->ConOut, L"serial: null io\n");
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return;
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}
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UINTN size = 1;
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EFI_STATUS status = uefi_call_wrapper((void*)g_serial.SerialIo->Write, 3, g_serial.SerialIo, &size, &c);
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if (status != EFI_SUCCESS) {
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uefi_call_wrapper((void*)ST->ConOut->OutputString, 2, ST->ConOut, L"serial: write failed\n");
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}
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}
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void serial_write(const char *str) {
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if (!g_serial.SerialIo) {
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uefi_call_wrapper((void*)ST->ConOut->OutputString, 2, ST->ConOut, L"serial: null io\n");
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return;
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}
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while (*str) {
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serial_write_char(*str++);
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}
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}
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char serial_read_char() {
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if (!g_serial.SerialIo) return 0;
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char c = 0;
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UINTN size = 1;
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EFI_STATUS status = uefi_call_wrapper((void*)g_serial.SerialIo->Read, 3, g_serial.SerialIo, &size, &c);
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if (status != EFI_SUCCESS || size == 0) return 0;
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return c;
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} |