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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#if IS_ENABLED(CONFIG_ACPI_CONSOLE)
#include <soc/iomap.h>
Name (UFLG, IS_ENABLED(CONFIG_CONSOLE_SERIAL))
Method (LURT, 1, Serialized)
{
If (LEqual(Arg0, 0)) { /* 0 = 0x3f8 */
Store (0x3f8, Local0)
} ElseIf (LEqual(Arg0, 1)) { /* 1 = 0x2f8 */
Store (0x2f8, Local0)
} ElseIf (LEqual(Arg0, 2)) { /* 2 = 0x3e8 */
Store (0x3e8, Local0)
} ElseIf (LEqual(Arg0, 3)) { /* 3 = 0x2e8 */
Store (0x2e8, Local0)
}
Return (Local0)
}
Method (APRT, 1, Serialized)
{
Name(OPDT, 0)
Name(INDX, 0)
Name(LENG, 0)
Name(ADBG, Buffer(256) {0})
If (LEqual(ObjectType(Arg0), 1)) { /* Integer */
ToHexString(Arg0, Local0)
Store(Local0, ADBG)
} ElseIf (LEqual(ObjectType(Arg0), 2)) { /* String */
Store(Arg0, ADBG)
} ElseIf (LEqual(ObjectType(Arg0), 3)) { /* Buffer */
ToHexString(Arg0, ADBG)
} Else {
Store("This type of object is not supported", ADBG)
}
While (LNotEqual(DeRefOf(Index(ADBG, INDX)), 0))
{
Increment (INDX)
}
Store (INDX, LENG) /* Length of the String */
#if IS_ENABLED(CONFIG_DRIVERS_UART_8250MEM_32)
OperationRegion (UBAR, SystemMemory,
UART_BASE_0_ADDR(CONFIG_UART_FOR_CONSOLE), 24)
Field (UBAR, AnyAcc, NoLock, Preserve)
{
TDR, 8, /* Transmit Data Register BAR + 0x000 */
, 24,
IER, 8, /* Interrupt Enable Register BAR + 0x004 */
, 24,
IIR, 8, /* Interrupt Identification Register BAR + 0x008 */
, 24,
LCR, 8, /* Line Control Register BAR + 0x00C */
, 24,
MCR, 8, /* Modem Control Register BAR + 0x010 */
, 24,
LSR, 8, /* Line Status Register BAR + 0x014 */
, 24
}
#else
OperationRegion (UBAR, SystemIO, LURT (CONFIG_UART_FOR_CONSOLE), 6)
Field (UBAR, ByteAcc, NoLock, Preserve)
{
TDR, 8, /* Transmit Data Register IO Port + 0x0 */
IER, 8, /* Interrupt Enable Register IO Port + 0x1 */
IIR, 8, /* Interrupt Identification Register IO Port + 0x2 */
LCR, 8, /* Line Control Register IO Port + 0x3 */
MCR, 8, /* Modem Control Register IO Port + 0x4 */
LSR, 8 /* Line Status Register IO Port + 0x5 */
}
#endif
If (LEqual(UFLG, 0)) {
/* Enable Baud Rate Divisor Latch, Set Word length to 8 bit*/
Store (0x83, LCR)
Store (0x01, IIR)
Store (0x03, MCR)
/* Configure baud rate to 115200 */
Store (0x01, TDR)
Store (0x00, IER)
Store (0x03, LCR) /* Disable Baud Rate Divisor Latch */
Increment (UFLG)
}
Store (0x00, INDX)
While (LLess (INDX, LENG))
{
/* Wait for the transmitter t to be ready */
While (1)
{
And (LSR, 0x20, OPDT)
If (LNotEqual(OPDT, 0))
{
Break
}
}
Store (DeRefOf (Index (ADBG, INDX)), TDR)
Increment(INDX)
}
} /* End of APRT */
#endif
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