/* * This file is part of the coreboot project. * * Copyright (C) 2008 Advanced Micro Devices, Inc. * * 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. */ /* #include <arch/acpi.h> DefinitionBlock ( "DSDT.AML", "DSDT", 0x01, OEM_ID, ACPI_TABLE_CREATOR, 0x00010001 ) { #include "debug.asl" } */ /* * 0x80: POST_BASE * 0x3F8: DEBCOM_BASE * X80: POST_REGION * P80: PORT80 * * CREG: DEBCOM_REGION * CUAR: DEBCOM_UART * CDAT: DEBCOM_DATA * CDLM: DEBCOM_DLM * DLCR: DEBCOM_LCR * CMCR: DEBCOM_MCR * CLSR: DEBCOM_LSR * * DEBUG_INIT DINI */ OperationRegion(X80, SystemIO, 0x80, 1) Field(X80, ByteAcc, NoLock, Preserve) { P80, 8 } OperationRegion(CREG, SystemIO, 0x3F8, 8) Field(CREG, ByteAcc, NoLock, Preserve) { CDAT, 8, CDLM, 8,, 8, DLCR, 8, CMCR, 8, CLSR, 8 } /* * DINI * Initialize the COM port to 115,200 8-N-1 */ Method(DINI) { store(0x83, DLCR) store(0x01, CDAT) /* 115200 baud (low) */ store(0x00, CDLM) /* 115200 baud (high) */ store(0x03, DLCR) /* word=8 stop=1 parity=none */ store(0x03, CMCR) /* DTR=1 RTS=1 Out2=Off Loop=Off */ store(0x00, CDLM) /* turn off interrupts */ } /* * THRE * Wait for COM port transmitter holding register to go empty */ Method(THRE) { and(CLSR, 0x20, local0) while (Lequal(local0, Zero)) { and(CLSR, 0x20, local0) } } /* * OUTX * Send a single raw character */ Method(OUTX, 1) { THRE() store(Arg0, CDAT) } /* * OUTC * Send a single character, expanding LF into CR/LF */ Method(OUTC, 1) { if (LEqual(Arg0, 0x0a)) { OUTX(0x0d) } OUTX(Arg0) } /* * DBGN * Send a single hex nibble */ Method(DBGN, 1) { and(Arg0, 0x0f, Local0) if (LLess(Local0, 10)) { add(Local0, 0x30, Local0) } else { add(Local0, 0x37, Local0) } OUTC(Local0) } /* * DBGB * Send a hex byte */ Method(DBGB, 1) { ShiftRight(Arg0, 4, Local0) DBGN(Local0) DBGN(Arg0) } /* * DBGW * Send a hex word */ Method(DBGW, 1) { ShiftRight(Arg0, 8, Local0) DBGB(Local0) DBGB(Arg0) } /* * DBGD * Send a hex Dword */ Method(DBGD, 1) { ShiftRight(Arg0, 16, Local0) DBGW(Local0) DBGW(Arg0) } /* * DBGO * Send either a string or an integer */ Method(DBGO, 1) { /* DINI() */ if (LEqual(ObjectType(Arg0), 1)) { if (LGreater(Arg0, 0xffff)) { DBGD(Arg0) } else { if (LGreater(Arg0, 0xff)) { DBGW(Arg0) } else { DBGB(Arg0) } } } else { Name(BDBG, Buffer(80) {}) store(Arg0, BDBG) store(0, Local1) while (One) { store(GETC(BDBG, Local1), Local0) if (LEqual(Local0, 0)) { return (0) } OUTC(Local0) Increment(Local1) } } return (0) } /* Get a char from a string */ Method(GETC, 2) { CreateByteField(Arg0, Arg1, DBGC) return (DBGC) }