44d5342835
This paves the way for AP printk spinlock on AMD platforms Change-Id: Ice42a0d3177736bf6e1bc601092e413601866f20 Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-on: https://review.coreboot.org/11958 Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
79 lines
1.6 KiB
C
79 lines
1.6 KiB
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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* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
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*
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*/
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#include <console/console.h>
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#include <console/streams.h>
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#include <console/vtxprintf.h>
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#include <smp/spinlock.h>
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#include <smp/node.h>
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#include <stddef.h>
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#include <trace.h>
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#if (!defined(__PRE_RAM__) && IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK)) || !IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK)
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DECLARE_SPIN_LOCK(console_lock)
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#endif
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void do_putchar(unsigned char byte)
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{
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console_tx_byte(byte);
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}
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static void wrap_putchar(unsigned char byte, void *data)
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{
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do_putchar(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 IS_ENABLED (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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#ifdef __PRE_RAM__
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#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK)
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spin_lock(romstage_console_lock());
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#endif
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#else
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spin_lock(&console_lock);
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#endif
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va_start(args, fmt);
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i = vtxprintf(wrap_putchar, fmt, args, NULL);
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va_end(args);
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console_tx_flush();
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#ifdef __PRE_RAM__
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#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK)
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spin_unlock(romstage_console_lock());
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#endif
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#else
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spin_unlock(&console_lock);
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#endif
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ENABLE_TRACE;
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return i;
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}
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#if IS_ENABLED (CONFIG_CHROMEOS)
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void do_printk_va_list(int msg_level, const char *fmt, va_list args)
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{
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if (!console_log_level(msg_level))
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return;
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vtxprintf(wrap_putchar, fmt, args, NULL);
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console_tx_flush();
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}
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#endif /* CONFIG_CHROMEOS */
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