karina
35 lines
736 B
C
35 lines
736 B
C
// SPDX-License-Identifier: GPL-3.0-or-later
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// Copyright (c) 2026 0xKSor
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#include <IO/Serial.h>
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#include <Arch/IO.h>
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#include <Arch/CPU.h>
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static UInt64 sUARTAddress = kUARTBaseAddress;
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void SerialUpdate(UInt64 address) {
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sUARTAddress = address;
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}
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Int32 SerialPutCharacter(ASCII character) {
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// TXFF -- TRansmit FIFO Full for PL011 is 5 bit of FR reg (0x18)
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UInt64 uartFR = sUARTAddress + 0x18;
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while ((IOAddressRead32(uartFR) & (1 << 5)) != 0) {
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CPUYield();
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}
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IOAddressWrite32(sUARTAddress, character);
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return character;
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}
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Int32 SerialPutString(const ASCII* string) {
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Int i = 0;
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while (string[i] != '\0') {
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SerialPutCharacter(string[i]);
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i++;
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}
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return i;
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}
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