diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/arc/console.c |
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!
Diffstat (limited to 'arch/mips/arc/console.c')
-rw-r--r-- | arch/mips/arc/console.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/mips/arc/console.c b/arch/mips/arc/console.c new file mode 100644 index 000000000000..6a9d144512c0 --- /dev/null +++ b/arch/mips/arc/console.c @@ -0,0 +1,63 @@ +/* + * 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 <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; +} + +void prom_printf(char *fmt, ...) +{ + va_list args; + char ppbuf[1024]; + char *bptr; + + va_start(args, fmt); + vsprintf(ppbuf, fmt, args); + + bptr = ppbuf; + + while (*bptr != 0) { + if (*bptr == '\n') + prom_putchar('\r'); + + prom_putchar(*bptr++); + } + va_end(args); +} |