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authorMagnus Damm <damm@opensource.se>2010-02-08 11:02:54 (GMT)
committerPaul Mundt <lethal@linux-sh.org>2010-02-09 01:34:12 (GMT)
commit4ae04acb81256719a71125c0f0280e2a3ad68e25 (patch)
tree88f308d4dc70e3a196cedf3ba04781e0f7a4b138 /arch/arm/mach-shmobile
parent62f60d6a37910501814c6281e6c21b485434a7f1 (diff)
downloadlinux-fsl-qoriq-4ae04acb81256719a71125c0f0280e2a3ad68e25.tar.xz
ARM: mach-shmobile: early console support using earlyprintk
Add support for early console to the SH-Mobile boards. Simply perform an early platform probe for "earlyprintk" to trigger the early serial console code in sh-sci.c. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/arm/mach-shmobile')
-rw-r--r--arch/arm/mach-shmobile/Makefile2
-rw-r--r--arch/arm/mach-shmobile/board-ap4evb.c3
-rw-r--r--arch/arm/mach-shmobile/board-g3evm.c3
-rw-r--r--arch/arm/mach-shmobile/board-g4evm.c3
-rw-r--r--arch/arm/mach-shmobile/console.c31
-rw-r--r--arch/arm/mach-shmobile/include/mach/common.h1
6 files changed, 39 insertions, 4 deletions
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 88893db..800e7dd 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -3,7 +3,7 @@
#
# Common objects
-obj-y := timer.o
+obj-y := timer.o console.o
# CPU objects
obj-$(CONFIG_ARCH_SH7367) += setup-sh7367.o clock-sh7367.o
diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index a8d815c..94b545b 100644
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -105,9 +105,10 @@ static void __init ap4evb_map_io(void)
{
iotable_init(ap4evb_io_desc, ARRAY_SIZE(ap4evb_io_desc));
- /* setup early devices and clocks here as well */
+ /* setup early devices, clocks and console here as well */
sh7372_add_early_devices();
sh7367_clock_init(); /* use g3 clocks for now */
+ shmobile_setup_console();
}
static void __init ap4evb_init(void)
diff --git a/arch/arm/mach-shmobile/board-g3evm.c b/arch/arm/mach-shmobile/board-g3evm.c
index b4b2027..eba2311 100644
--- a/arch/arm/mach-shmobile/board-g3evm.c
+++ b/arch/arm/mach-shmobile/board-g3evm.c
@@ -105,9 +105,10 @@ static void __init g3evm_map_io(void)
{
iotable_init(g3evm_io_desc, ARRAY_SIZE(g3evm_io_desc));
- /* setup early devices and clocks here as well */
+ /* setup early devices, clocks and console here as well */
sh7367_add_early_devices();
sh7367_clock_init();
+ shmobile_setup_console();
}
static void __init g3evm_init(void)
diff --git a/arch/arm/mach-shmobile/board-g4evm.c b/arch/arm/mach-shmobile/board-g4evm.c
index 0d2948f..0ddde03 100644
--- a/arch/arm/mach-shmobile/board-g4evm.c
+++ b/arch/arm/mach-shmobile/board-g4evm.c
@@ -105,9 +105,10 @@ static void __init g4evm_map_io(void)
{
iotable_init(g4evm_io_desc, ARRAY_SIZE(g4evm_io_desc));
- /* setup early devices and clocks here as well */
+ /* setup early devices, clocks and console here as well */
sh7377_add_early_devices();
sh7367_clock_init(); /* use g3 clocks for now */
+ shmobile_setup_console();
}
static void __init g4evm_init(void)
diff --git a/arch/arm/mach-shmobile/console.c b/arch/arm/mach-shmobile/console.c
new file mode 100644
index 0000000..9411a5b
--- /dev/null
+++ b/arch/arm/mach-shmobile/console.c
@@ -0,0 +1,31 @@
+/*
+ * SH-Mobile Console
+ *
+ * Copyright (C) 2010 Magnus Damm
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <mach/common.h>
+#include <asm/mach/map.h>
+
+void __init shmobile_setup_console(void)
+{
+ parse_early_param();
+
+ /* Let earlyprintk output early console messages */
+ early_platform_driver_probe("earlyprintk", 1, 1);
+}
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index a12eb4d..f5986ea 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -2,6 +2,7 @@
#define __ARCH_MACH_COMMON_H
extern struct sys_timer shmobile_timer;
+extern void shmobile_setup_console(void);
extern void sh7367_init_irq(void);
extern void sh7367_add_early_devices(void);