mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-30 19:48:19 +00:00
9e70a11622
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>
137 lines
2.3 KiB
Plaintext
137 lines
2.3 KiB
Plaintext
/*
|
|
* 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)
|
|
}
|