7f0e93060e
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>
40 lines
704 B
C
40 lines
704 B
C
/*
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* blantantly copied from linux/kernel/printk.c
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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*/
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#include <smp/spinlock.h>
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#include <console/vtxprintf.h>
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#include <console/console.h>
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#include <trace.h>
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int console_loglevel = CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
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int default_console_loglevel = CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
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DECLARE_SPIN_LOCK(console_lock)
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int do_printk(int msg_level, const char *fmt, ...)
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{
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va_list args;
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int i;
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if (msg_level > console_loglevel) {
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return 0;
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}
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DISABLE_TRACE;
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spin_lock(&console_lock);
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va_start(args, fmt);
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i = vtxprintf(console_tx_byte, fmt, args);
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va_end(args);
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console_tx_flush();
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spin_unlock(&console_lock);
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ENABLE_TRACE;
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return i;
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}
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