diff options
Diffstat (limited to 'arch/mips/baget/print.c')
-rw-r--r-- | arch/mips/baget/print.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/mips/baget/print.c b/arch/mips/baget/print.c new file mode 100644 index 000000000..68511c20e --- /dev/null +++ b/arch/mips/baget/print.c @@ -0,0 +1,118 @@ +/* $Id$ + * + * print.c: Simple print fascility + * + * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov + * + */ +#include <stdarg.h> +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/baget/baget.h> + +/* + * Define this to see 'baget_printk' (debug) messages + */ +// #define BAGET_PRINTK + +/* + * This function is same for BALO and Linux baget_printk, + * and normally prints characted to second (UART A) console. + */ + +static void delay(void) {} + +static void outc_low(char c) +{ + int i; + vac_outb(c, VAC_UART_B_TX); + for (i=0; i<10000; i++) + delay(); +} + +void outc(char c) +{ + if (c == '\n') + outc_low('\r'); + outc_low(c); +} + +void outs(char *s) +{ + while(*s) outc(*s++); +} + +void baget_write(char *s, int l) +{ + while(l--) + outc(*s++); +} + +int baget_printk(const char *fmt, ...) +{ +#ifdef BAGET_PRINTK + va_list args; + int i; + static char buf[1024]; + + va_start(args, fmt); + i = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf)-4 */ + va_end(args); + baget_write(buf, i); + return i; +#else + return 0; +#endif +} + +static __inline__ void puthex( int a ) +{ + static char s[9]; + static char e[] = "0123456789ABCDEF"; + int i; + for( i = 7; i >= 0; i--, a >>= 4 ) s[i] = e[a & 0x0F]; + s[8] = '\0'; + outs( s ); +} + +__initfunc(void balo_printf( char *f, ... )) +{ + int *arg = (int*)&f + 1; + char c; + int format = 0; + + while((c = *f++) != 0) { + switch(c) { + default: + if(format) { + outc('%'); + format = 0; + } + outc( c ); + break; + case '%': + if( format ){ + format = 0; + outc(c); + } else format = 1; + break; + case 'x': + if(format) puthex( *arg++ ); + else outc(c); + format = 0; + break; + case 's': + if( format ) outs((char *)*arg++); + else outc(c); + format = 0; + break; + } + } +} + +__initfunc(void balo_hungup(void)) +{ + outs("Hunging up.\n"); + while(1); +} |