diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
---|---|---|
committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/unicore32/kernel/early_printk.c |
Initial import
Diffstat (limited to 'arch/unicore32/kernel/early_printk.c')
-rw-r--r-- | arch/unicore32/kernel/early_printk.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/unicore32/kernel/early_printk.c b/arch/unicore32/kernel/early_printk.c new file mode 100644 index 000000000..f2f6323c8 --- /dev/null +++ b/arch/unicore32/kernel/early_printk.c @@ -0,0 +1,49 @@ +/* + * linux/arch/unicore32/kernel/early_printk.c + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/console.h> +#include <linux/init.h> +#include <linux/string.h> +#include <mach/ocd.h> + +/* On-Chip-Debugger functions */ + +static void early_ocd_write(struct console *con, const char *s, unsigned n) +{ + while (*s && n-- > 0) { + if (*s == '\n') + ocd_putc((int)'\r'); + ocd_putc((int)*s); + s++; + } +} + +static struct console early_ocd_console = { + .name = "earlyocd", + .write = early_ocd_write, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + +static int __init setup_early_printk(char *buf) +{ + if (!buf || early_console) + return 0; + + early_console = &early_ocd_console; + if (strstr(buf, "keep")) + early_console->flags &= ~CON_BOOT; + else + early_console->flags |= CON_BOOT; + register_console(early_console); + return 0; +} +early_param("earlyprintk", setup_early_printk); |