diff options
Diffstat (limited to 'src/arch/i386/lib/printk_init.c')
-rw-r--r-- | src/arch/i386/lib/printk_init.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/arch/i386/lib/printk_init.c b/src/arch/i386/lib/printk_init.c new file mode 100644 index 0000000000..7c03664a4f --- /dev/null +++ b/src/arch/i386/lib/printk_init.c @@ -0,0 +1,46 @@ +/* + * blantantly copied from linux/kernel/printk.c + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * by yhlu moved from arch/ppc/lib/printk_init.c, removed the global variable console_loglevel + */ +#include <stdarg.h> +#include <console/loglevel.h> + +/* printk's without a loglevel use this.. */ +#define DEFAULT_MESSAGE_LOGLEVEL 4 /* BIOS_WARNING */ + +/* Keep together for sysctl support */ +/* Using an global varible can cause problem when we reset the stack from cache as ram to ram*/ +#if 0 +int console_loglevel = DEFAULT_CONSOLE_LOGLEVEL; +#else +#define console_loglevel ASM_CONSOLE_LOGLEVEL +#endif + +extern int vtxprintf(void (*)(unsigned char), const char *, va_list); +extern void uart8250_tx_byte(unsigned, unsigned char); + +void console_tx_byte(unsigned char byte) +{ + if (byte == '\n') + uart8250_tx_byte(TTYS0_BASE, '\r'); + uart8250_tx_byte(TTYS0_BASE, byte); +} + +int do_printk(int msg_level, const char *fmt, ...) +{ + va_list args; + int i; + + if (msg_level >= console_loglevel) { + return 0; + } + + va_start(args, fmt); + i = vtxprintf(console_tx_byte, fmt, args); + va_end(args); + + return i; +} |