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author | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-25 10:40:14 -0400 |
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committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-25 10:40:14 -0400 |
commit | ff877ea80efa2015b6263766f78ee42c2a1b32f9 (patch) | |
tree | 85205005c611ab774702148558321c6fb92f1ccd /arch/mips/mti-malta/malta-console.c | |
parent | 30821fee4f0cb3e6d241d9f7ddc37742212e3eb7 (diff) | |
parent | d37e6bf68fc1eb34a4ad21d9ae8890ed37ea80e7 (diff) | |
download | linux-ff877ea80efa2015b6263766f78ee42c2a1b32f9.tar.bz2 |
Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6
Diffstat (limited to 'arch/mips/mti-malta/malta-console.c')
-rw-r--r-- | arch/mips/mti-malta/malta-console.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/mips/mti-malta/malta-console.c b/arch/mips/mti-malta/malta-console.c new file mode 100644 index 000000000000..43bcfb4f8167 --- /dev/null +++ b/arch/mips/mti-malta/malta-console.c @@ -0,0 +1,47 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Putting things on the screen/serial line using YAMONs facilities. + */ +#include <linux/console.h> +#include <linux/init.h> +#include <linux/serial_reg.h> +#include <asm/io.h> + + +#define PORT(offset) (0x3f8 + (offset)) + + +static inline unsigned int serial_in(int offset) +{ + return inb(PORT(offset)); +} + +static inline void serial_out(int offset, int value) +{ + outb(value, PORT(offset)); +} + +int prom_putchar(char c) +{ + while ((serial_in(UART_LSR) & UART_LSR_THRE) == 0) + ; + + serial_out(UART_TX, c); + + return 1; +} |