657e0be464
This gives us completely transparent low-level function to transmit data. Change-Id: I706791ff43d80a36a7252a4da0e6f3af92520db7 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5336 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
59 lines
933 B
C
59 lines
933 B
C
/*
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* blatantly 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/node.h>
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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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DECLARE_SPIN_LOCK(console_lock)
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void do_putchar(unsigned char byte)
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{
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if (byte == '\n')
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console_tx_byte('\r');
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console_tx_byte(byte);
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}
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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 (!console_log_level(msg_level))
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return 0;
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#if CONFIG_SQUELCH_EARLY_SMP && defined(__PRE_RAM__)
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if (!boot_cpu())
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return 0;
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#endif
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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(do_putchar, 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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#if CONFIG_CHROMEOS
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void do_vtxprintf(const char *fmt, va_list args)
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{
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vtxprintf(do_putchar, fmt, args);
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console_tx_flush();
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}
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#endif
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