From 7f0e93060e720149bb59023d608a67cfc21542b1 Mon Sep 17 00:00:00 2001 From: Rudolf Marek Date: Fri, 2 Sep 2011 23:23:41 +0200 Subject: 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 Reviewed-on: http://review.coreboot.org/178 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/lib/uart8250.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/lib/uart8250.c') 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 #include #include +#include + #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) -- cgit v1.2.3