95c331b94b
The i386.c file uses standard 3f8 UART for some simple diagnostic prints, and the libpayload console otherwise. This payload was used to debug Linux as a rampayload and was very helpful for that work. Change-Id: I1cce5528780cd825fd91a88137fa70abd9f218e7 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: https://review.coreboot.org/28600 Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
49 lines
966 B
C
49 lines
966 B
C
/*
|
|
* This file is part of the coreinfo project.
|
|
*
|
|
* Copyright (C) 2018 Google 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 <libpayload-config.h>
|
|
#include <libpayload.h>
|
|
#include "linuxcheck.h"
|
|
|
|
void buts(char *s)
|
|
{
|
|
int i;
|
|
for (i = 0; i < strlen(s); i++)
|
|
outb(s[i], 0x3f8);
|
|
}
|
|
|
|
void hex4(u8 c)
|
|
{
|
|
static char *hex = "0123456789abcdef";
|
|
outb(hex[c & 0xf], 0x3f8);
|
|
}
|
|
|
|
void hex8(u8 c)
|
|
{
|
|
hex4(c >> 4);
|
|
hex4(c);
|
|
}
|
|
|
|
void hex16(u16 c)
|
|
{
|
|
hex8((u8)(c >> 8));
|
|
hex8((u8)c);
|
|
}
|
|
void hex32(u32 c)
|
|
{
|
|
hex16((u16)(c >> 16));
|
|
hex16((u16)c);
|
|
}
|