diff options
| author | Ulf Carlsson <md1ulfc@mdstud.chalmers.se> | 1999-06-12 18:42:38 +0000 |
|---|---|---|
| committer | Ulf Carlsson <md1ulfc@mdstud.chalmers.se> | 1999-06-12 18:42:38 +0000 |
| commit | 9c1c01ead627bdda9211c9abd5b758d6c687d8ac (patch) | |
| tree | 869f1f67f55354da9d7b3ef60b70d9d4001de787 /arch | |
| parent | a9e2b320a0866ea854f30c653bda8bca9e7ad176 (diff) | |
o Disable board caches temporarily during romvec calls.
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/arc/console.c | 25 | ||||
| -rw-r--r-- | arch/mips/arc/printf.c | 6 |
2 files changed, 29 insertions, 2 deletions
diff --git a/arch/mips/arc/console.c b/arch/mips/arc/console.c index c1934e796..beca1543d 100644 --- a/arch/mips/arc/console.c +++ b/arch/mips/arc/console.c @@ -2,25 +2,48 @@ * console.c: SGI arcs console code. * * Copyright (C) 1996 David S. Miller (dm@sgi.com) + * Compability with board caches, Ulf Carlsson * - * $Id: console.c,v 1.2 1998/04/05 11:24:01 ralf Exp $ + * $Id: console.c,v 1.1 1998/10/18 13:32:08 tsbogend Exp $ */ #include <linux/init.h> #include <asm/sgialib.h> +#include <asm/bcache.h> +/* The romvec 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 romvec write and read functions seem to interfere with the serial lines + * in some way. You should be careful with them. + */ +extern struct bcache_ops *bcops; + +#ifdef CONFIG_SGI_PROM_CONSOLE +void prom_putchar(char c) +#else __initfunc(void prom_putchar(char c)) +#endif { long cnt; char it = c; + bcops->bc_disable(); romvec->write(1, &it, 1, &cnt); + bcops->bc_enable(); } +#ifdef CONFIG_SGI_PROM_CONSOLE +char prom_getchar(void) +#else __initfunc(char prom_getchar(void)) +#endif { long cnt; char c; + bcops->bc_disable(); romvec->read(0, &c, 1, &cnt); + bcops->bc_enable(); return c; } diff --git a/arch/mips/arc/printf.c b/arch/mips/arc/printf.c index 132f97c82..422578017 100644 --- a/arch/mips/arc/printf.c +++ b/arch/mips/arc/printf.c @@ -4,7 +4,7 @@ * * Copyright (C) 1996 David S. Miller (dm@sgi.com) * - * $Id: printf.c,v 1.2 1998/04/05 11:24:03 ralf Exp $ + * $Id: printf.c,v 1.1 1998/10/18 13:32:09 tsbogend Exp $ */ #include <linux/init.h> #include <linux/kernel.h> @@ -13,7 +13,11 @@ static char ppbuf[1024]; +#ifdef CONFIG_SGI_PROM_CONSOLE +void prom_printf(char *fmt, ...) +#else __initfunc(void prom_printf(char *fmt, ...)) +#endif { va_list args; char ch, *bptr; |