| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| /* |
| * 0x3F8: DEBCOM_BASE |
| * |
| * 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(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) |
| { |
| DLCR = 0x83 |
| CDAT = 1 /* 115200 baud (low) */ |
| CDLM = 0 /* 115200 baud (high) */ |
| DLCR = 3 /* word=8 stop=1 parity=none */ |
| CMCR = 3 /* DTR=1 RTS=1 Out2=Off Loop=Off */ |
| CDLM = 0 /* turn off interrupts */ |
| } |
| |
| /* |
| * THRE |
| * Wait for COM port transmitter holding register to go empty |
| */ |
| Method(THRE) |
| { |
| local0 = CLSR & 0x20 |
| while (local0 == 0) { |
| local0 = CLSR & 0x20 |
| } |
| } |
| |
| /* |
| * OUTX |
| * Send a single raw character |
| */ |
| Method(OUTX, 1) |
| { |
| THRE() |
| CDAT = Arg0 |
| } |
| |
| /* |
| * OUTC |
| * Send a single character, expanding LF into CR/LF |
| */ |
| Method(OUTC, 1) |
| { |
| if (Arg0 == 0x0a) { |
| OUTX(0x0d) |
| } |
| OUTX(Arg0) |
| } |
| |
| /* |
| * DBGN |
| * Send a single hex nibble |
| */ |
| Method(DBGN, 1) |
| { |
| Local0 = Arg0 & 0x0f |
| if (Local0 < 10) { |
| Local0 += 0x30 |
| } else { |
| Local0 += 0x37 |
| } |
| OUTC(Local0) |
| } |
| |
| /* |
| * DBGB |
| * Send a hex byte |
| */ |
| Method(DBGB, 1) |
| { |
| Local0 = Arg0 >> 4 |
| DBGN(Local0) |
| DBGN(Arg0) |
| } |
| |
| /* |
| * DBGW |
| * Send a hex word |
| */ |
| Method(DBGW, 1) |
| { |
| Local0 = Arg0 >> 8 |
| DBGB(Local0) |
| DBGB(Arg0) |
| } |
| |
| /* |
| * DBGD |
| * Send a hex Dword |
| */ |
| Method(DBGD, 1) |
| { |
| Local0 = Arg0 >> 16 |
| DBGW(Local0) |
| DBGW(Arg0) |
| } |
| |
| /* |
| * DBGO |
| * Send either a string or an integer |
| */ |
| Method(DBGO, 1) |
| { |
| /* DINI() */ |
| if (ObjectType(Arg0) == 1) { |
| if (Arg0 > 0xffff) { |
| DBGD(Arg0) |
| } else { |
| if (Arg0 > 0xff) { |
| DBGW(Arg0) |
| } else { |
| DBGB(Arg0) |
| } |
| } |
| } else { |
| Name(BDBG, Buffer(80) {}) |
| BDBG = Arg0 |
| Local1 = 0 |
| while (1) { |
| Local0 = GETC(BDBG, Local1) |
| if (Local0 == 0) { |
| return (0) |
| } |
| OUTC(Local0) |
| Local1++ |
| } |
| } |
| return (0) |
| } |
| |
| /* Get a char from a string */ |
| Method(GETC, 2) |
| { |
| CreateByteField(Arg0, Arg1, DBGC) |
| return (DBGC) |
| } |