sonya
350776d5d1
this fixes linking error on aarch64 also _seralPutchar was made public to prevent mangling
21 lines
599 B
Swift
21 lines
599 B
Swift
let kUARTBaseAddress: UInt = 0x09000000 // TODO: Make it dynamic by parsion DTB
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@_cdecl("putchar")
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@discardableResult
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public func _serialPutchar(_ char: Int32) -> Int32 {
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let uartFR: UInt = kUARTBaseAddress + 0x18// TXFF -- TRansmit FIFO Full for PL011 is 5 bit of FR reg (0x18)
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while (mmio_read32(uartFR) & (1 << 5)) != 0 {
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// i love pizza btw
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}
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mmio_write32(UInt(kUARTBaseAddress), UInt32(char))
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return char
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}
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public func kprint(_ message: StaticString) {
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for i in 0..<message.utf8CodeUnitCount {
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_serialPutchar(Int32(message.utf8Start[i]))
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}
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}
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