From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/mips/arc/promlib.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 arch/mips/arc/promlib.c (limited to 'arch/mips/arc/promlib.c') diff --git a/arch/mips/arc/promlib.c b/arch/mips/arc/promlib.c new file mode 100644 index 00000000000..c508c00dbb6 --- /dev/null +++ b/arch/mips/arc/promlib.c @@ -0,0 +1,43 @@ +/* + * 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) + * Compability with board caches, Ulf Carlsson + */ +#include +#include +#include + +/* + * 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; +} -- cgit v1.2.3