diff options
Diffstat (limited to 'common/console.c')
| -rw-r--r-- | common/console.c | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/common/console.c b/common/console.c index b23d933d2..f17875ead 100644 --- a/common/console.c +++ b/common/console.c @@ -329,6 +329,39 @@ int tstc(void) return serial_tstc(); } +#ifdef CONFIG_PRE_CONSOLE_BUFFER +#define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ) + +static void pre_console_putc(const char c) +{ + char *buffer = (char *)CONFIG_PRE_CON_BUF_ADDR; + + buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c; +} + +static void pre_console_puts(const char *s) +{ + while (*s) + pre_console_putc(*s++); +} + +static void print_pre_console_buffer(void) +{ + unsigned long i = 0; + char *buffer = (char *)CONFIG_PRE_CON_BUF_ADDR; + + if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ) + i = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ; + + while (i < gd->precon_buf_idx) + putc(buffer[CIRC_BUF_IDX(i++)]); +} +#else +static inline void pre_console_putc(const char c) {} +static inline void pre_console_puts(const char *s) {} +static inline void print_pre_console_buffer(void) {} +#endif + void putc(const char c) { #ifdef CONFIG_SILENT_CONSOLE @@ -342,7 +375,7 @@ void putc(const char c) #endif if (!gd->have_console) - return; + return pre_console_putc(c); if (gd->flags & GD_FLG_DEVINIT) { /* Send to the standard output */ @@ -366,7 +399,7 @@ void puts(const char *s) #endif if (!gd->have_console) - return; + return pre_console_puts(s); if (gd->flags & GD_FLG_DEVINIT) { /* Send to the standard output */ @@ -383,8 +416,10 @@ int printf(const char *fmt, ...) uint i; char printbuffer[CONFIG_SYS_PBSIZE]; +#ifndef CONFIG_PRE_CONSOLE_BUFFER if (!gd->have_console) return 0; +#endif va_start(args, fmt); @@ -404,8 +439,10 @@ int vprintf(const char *fmt, va_list args) uint i; char printbuffer[CONFIG_SYS_PBSIZE]; +#ifndef CONFIG_PRE_CONSOLE_BUFFER if (!gd->have_console) return 0; +#endif /* For this to work, printbuffer must be larger than * anything we ever want to print. @@ -547,6 +584,8 @@ int console_init_f(void) gd->flags |= GD_FLG_SILENT; #endif + print_pre_console_buffer(); + return 0; } |