diff options
Diffstat (limited to 'arch/mips/dec/prom/console.c')
-rw-r--r-- | arch/mips/dec/prom/console.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/mips/dec/prom/console.c b/arch/mips/dec/prom/console.c new file mode 100644 index 000000000..caa6e047c --- /dev/null +++ b/arch/mips/dec/prom/console.c @@ -0,0 +1,45 @@ +/* + * DECstation PROM-based early console support. + * + * Copyright (C) 2004, 2007 Maciej W. Rozycki + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include <linux/console.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/string.h> + +#include <asm/dec/prom.h> + +static void __init prom_console_write(struct console *con, const char *s, + unsigned int c) +{ + char buf[81]; + unsigned int chunk = sizeof(buf) - 1; + + while (c > 0) { + if (chunk > c) + chunk = c; + memcpy(buf, s, chunk); + buf[chunk] = '\0'; + prom_printf("%s", buf); + s += chunk; + c -= chunk; + } +} + +static struct console promcons __initdata = { + .name = "prom", + .write = prom_console_write, + .flags = CON_BOOT | CON_PRINTBUFFER, + .index = -1, +}; + +void __init register_prom_console(void) +{ + register_console(&promcons); +} |