diff options
| author | Rudolf Marek <r.marek@assembler.cz> | 2011-09-02 23:23:41 +0200 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2011-09-07 01:26:47 +0200 |
| commit | 7f0e93060e720149bb59023d608a67cfc21542b1 (patch) | |
| tree | a61f1b7a530b517948529506a6dec73e8a4db19c /src/lib/uart8250.c | |
| parent | f73535c089564864eb92628c351f76b0c556ab91 (diff) | |
Add support for the tracing infastructure in coreboot.
The compiler is forced to emmit special functions on every
entry/exit of the function. Add a compile time option
to support it. Function entries will be printed in
the console. The CONFIG_TRACE has more documentation.
Patch for userspace tools will follow.
Change-Id: I2cbeb3f104892b034c8756f86ed05bf71187c3f3
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/178
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/lib/uart8250.c')
| -rw-r--r-- | src/lib/uart8250.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/lib/uart8250.c b/src/lib/uart8250.c index e7ddd0bfd5..b2246713ca 100644 --- a/src/lib/uart8250.c +++ b/src/lib/uart8250.c @@ -21,6 +21,8 @@ #include <arch/io.h> #include <uart8250.h> #include <pc80/mc146818rtc.h> +#include <trace.h> + #if CONFIG_USE_OPTION_TABLE #include "option_table.h" #endif @@ -69,6 +71,7 @@ unsigned char uart8250_rx_byte(unsigned base_port) void uart8250_init(unsigned base_port, unsigned divisor) { + DISABLE_TRACE; /* Disable interrupts */ outb(0x0, base_port + UART_IER); /* Enable FIFOs */ @@ -86,6 +89,7 @@ void uart8250_init(unsigned base_port, unsigned divisor) /* Set to 3 for 8N1 */ outb(CONFIG_TTYS0_LCS, base_port + UART_LCR); + ENABLE_TRACE; } void uart_init(void) |