Resguardo inicial

linux-7.2.3/arch/mips/kernel/early_printk.c

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+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2002, 2003, 06, 07 Ralf Baechle (ralf@linux-mips.org)
+ * Copyright (C) 2007 MIPS Technologies, Inc.
+ *   written by Ralf Baechle (ralf@linux-mips.org)
+ */
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/printk.h>
+#include <linux/init.h>
+
+#include <asm/setup.h>
+
+static void early_console_write(struct console *con, const char *s, unsigned n)
+{
+	while (n-- && *s) {
+		if (*s == '\n')
+			prom_putchar('\r');
+		prom_putchar(*s);
+		s++;
+	}
+}
+
+static struct console early_console_prom = {
+	.name	= "early",
+	.write	= early_console_write,
+	.flags	= CON_PRINTBUFFER | CON_BOOT,
+	.index	= -1
+};
+
+void __init setup_early_printk(void)
+{
+	if (early_console)
+		return;
+	early_console = &early_console_prom;
+
+	register_console(&early_console_prom);
+}