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author | Bin Meng <bmeng.cn@gmail.com> | 2016-05-07 07:46:29 -0700 |
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committer | Bin Meng <bmeng.cn@gmail.com> | 2016-05-23 15:18:00 +0800 |
commit | 9e70a11622eb01c90c5152c08c3166adc60aed1e (patch) | |
tree | e5efcb3fe5cfdb5d23e3d9cfa2007f4822e8741b /arch/x86/include/asm/acpi/debug.asl | |
parent | 7e6343ef94e7f495f91ee20e2f5e76cfab409134 (diff) | |
download | u-boot-imx-9e70a11622eb01c90c5152c08c3166adc60aed1e.zip u-boot-imx-9e70a11622eb01c90c5152c08c3166adc60aed1e.tar.gz u-boot-imx-9e70a11622eb01c90c5152c08c3166adc60aed1e.tar.bz2 |
x86: acpi: Add some generic ASL libraries
This adds several generic ASL libraries that can be included by
other ASL files, which are:
- debug.asl: for debug output using POST I/O port and legacy serial port
- globutil.asl: for string compare routines
- statdef.asl: for _STA status values
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/include/asm/acpi/debug.asl')
-rw-r--r-- | arch/x86/include/asm/acpi/debug.asl | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpi/debug.asl b/arch/x86/include/asm/acpi/debug.asl new file mode 100644 index 0000000..8e7b603 --- /dev/null +++ b/arch/x86/include/asm/acpi/debug.asl @@ -0,0 +1,136 @@ +/* + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com> + * + * Modified from coreboot src/arch/x86/acpi/debug.asl + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* POST register region */ +OperationRegion(X80, SystemIO, 0x80, 1) +Field(X80, ByteAcc, NoLock, Preserve) +{ + P80, 8 +} + +/* Legacy serial port register region */ +OperationRegion(CREG, SystemIO, 0x3F8, 8) +Field(CREG, ByteAcc, NoLock, Preserve) +{ + CDAT, 8, + CDLM, 8, + , 8, + CLCR, 8, + CMCR, 8, + CLSR, 8 +} + +/* DINI - Initialize the serial port to 115200 8-N-1 */ +Method(DINI) +{ + Store(0x83, CLCR) + Store(0x01, CDAT) /* 115200 baud (low) */ + Store(0x00, CDLM) /* 115200 baud (high) */ + Store(0x03, CLCR) /* word=8 stop=1 parity=none */ + Store(0x03, CMCR) /* DTR=1 RTS=1 out1/2=Off loop=Off */ + Store(0x00, CDLM) /* turn off interrupts */ +} + +/* THRE - Wait for serial 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) +} + +/* Get a char from a string */ +Method(GETC, 2) +{ + CreateByteField(Arg0, Arg1, DBGC) + Return (DBGC) +} + +/* DBGO - Send either a string or an integer */ +Method(DBGO, 1, Serialized) +{ + 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 (Zero) + } + OUTC(Local0) + Increment(Local1) + } + } + + Return (Zero) +} |