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authorRalf Baechle <ralf@linux-mips.org>2007-03-01 11:56:43 +0000
committerRalf Baechle <ralf@linux-mips.org>2007-03-04 19:02:37 +0000
commit36a885306fdf7bb557c773309c993bfb2d0d693c (patch)
tree643b246c90653c9451ff7fecff74a79c3de8042c /arch/mips/kernel
parentca471c86043f4a8b01cba02ba2d3431fddcaf606 (diff)
[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.
early_printk is a so much saner thing. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
-rw-r--r--arch/mips/kernel/Makefile1
-rw-r--r--arch/mips/kernel/early_printk.c40
-rw-r--r--arch/mips/kernel/setup.c8
3 files changed, 49 insertions, 0 deletions
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index a3dad394acb..49246264cc7 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -65,5 +65,6 @@ obj-$(CONFIG_64BIT) += cpu-bugs64.o
obj-$(CONFIG_I8253) += i8253.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
+obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
diff --git a/arch/mips/kernel/early_printk.c b/arch/mips/kernel/early_printk.c
new file mode 100644
index 00000000000..304efdc5682
--- /dev/null
+++ b/arch/mips/kernel/early_printk.c
@@ -0,0 +1,40 @@
+/*
+ * 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/console.h>
+#include <linux/init.h>
+
+extern void prom_putchar(char);
+
+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 = {
+ .name = "early",
+ .write = early_console_write,
+ .flags = CON_PRINTBUFFER | CON_BOOT,
+ .index = -1
+};
+
+void __init setup_early_printk(void)
+{
+ register_console(&early_console);
+}
+
+void __init disable_early_printk(void)
+{
+ unregister_console(&early_console);
+}
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 11ab222a2e9..4975da0bfb6 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -525,6 +525,14 @@ void __init setup_arch(char **cmdline_p)
{
cpu_probe();
prom_init();
+
+#ifdef CONFIG_EARLY_PRINTK
+ {
+ extern void setup_early_printk(void);
+
+ setup_early_printk();
+ }
+#endif
cpu_report();
#if defined(CONFIG_VT)