threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
44 lines
968 B
C
44 lines
968 B
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1996 David S. Miller (dm@sgi.com)
|
|
* Compatibility with board caches, Ulf Carlsson
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <asm/sgialib.h>
|
|
#include <asm/bcache.h>
|
|
|
|
/*
|
|
* IP22 boardcache is not compatible with board caches. Thus we disable it
|
|
* during romvec action. Since r4xx0.c is always compiled and linked with your
|
|
* kernel, this shouldn't cause any harm regardless what MIPS processor you
|
|
* have.
|
|
*
|
|
* The ARC write and read functions seem to interfere with the serial lines
|
|
* in some way. You should be careful with them.
|
|
*/
|
|
|
|
void prom_putchar(char c)
|
|
{
|
|
ULONG cnt;
|
|
CHAR it = c;
|
|
|
|
bc_disable();
|
|
ArcWrite(1, &it, 1, &cnt);
|
|
bc_enable();
|
|
}
|
|
|
|
char prom_getchar(void)
|
|
{
|
|
ULONG cnt;
|
|
CHAR c;
|
|
|
|
bc_disable();
|
|
ArcRead(0, &c, 1, &cnt);
|
|
bc_enable();
|
|
|
|
return c;
|
|
}
|