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authorYoshinori Sato <ysato@users.sourceforge.jp>2015-11-21 21:42:58 +0900
committerYoshinori Sato <ysato@users.sourceforge.jp>2016-03-25 01:45:19 +0900
commit8cad489261c564d4ee1db4de4ac365af56807d8a (patch)
tree78dab251d974fcb5c5ab6ff6288170a8919cd2d2 /arch/h8300/kernel
parentd85816167bf50e4ec4a9e477a2eddfe59ed83bdf (diff)
downloadlinux-8cad489261c564d4ee1db4de4ac365af56807d8a.tar.bz2
h8300: switch EARLYCON
earlyprintk is architecture specific option. earlycon is generic and small footprint. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Diffstat (limited to 'arch/h8300/kernel')
-rw-r--r--arch/h8300/kernel/setup.c7
-rw-r--r--arch/h8300/kernel/sim-console.c67
2 files changed, 9 insertions, 65 deletions
diff --git a/arch/h8300/kernel/setup.c b/arch/h8300/kernel/setup.c
index e4985dfa91dc..c8c25a4e9e48 100644
--- a/arch/h8300/kernel/setup.c
+++ b/arch/h8300/kernel/setup.c
@@ -20,8 +20,6 @@
#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
@@ -137,11 +135,6 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
bootmem_init();
-#if defined(CONFIG_H8300H_SIM) || defined(CONFIG_H8S_SIM)
- sim_console_register();
-#endif
-
- early_platform_driver_probe("earlyprintk", 1, 0);
/*
* get kmalloc into gear
*/
diff --git a/arch/h8300/kernel/sim-console.c b/arch/h8300/kernel/sim-console.c
index a15edf0565d9..46138f55a9ea 100644
--- a/arch/h8300/kernel/sim-console.c
+++ b/arch/h8300/kernel/sim-console.c
@@ -1,79 +1,30 @@
/*
- * arch/h8300/kernel/early_printk.c
+ * arch/h8300/kernel/sim-console.c
*
- * Copyright (C) 2009 Yoshinori Sato <ysato@users.sourceforge.jp>
+ * Copyright (C) 2015 Yoshinori Sato <ysato@users.sourceforge.jp>
*
* 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.
*/
#include <linux/console.h>
-#include <linux/tty.h>
#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
+#include <linux/serial_core.h>
-static void sim_write(struct console *co, const char *ptr,
- unsigned len)
+static void sim_write(struct console *con, const char *s, unsigned n)
{
register const int fd __asm__("er0") = 1; /* stdout */
- register const char *_ptr __asm__("er1") = ptr;
- register const unsigned _len __asm__("er2") = len;
+ register const char *_ptr __asm__("er1") = s;
+ register const unsigned _len __asm__("er2") = n;
__asm__(".byte 0x5e,0x00,0x00,0xc7\n\t" /* jsr @0xc7 (sys_write) */
: : "g"(fd), "g"(_ptr), "g"(_len));
}
-static struct console sim_console = {
- .name = "sim_console",
- .write = sim_write,
- .setup = NULL,
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-static char sim_console_buf[32];
-
-static int sim_probe(struct platform_device *pdev)
-{
- if (sim_console.data)
- return -EEXIST;
-
- if (!strstr(sim_console_buf, "keep"))
- sim_console.flags |= CON_BOOT;
-
- register_console(&sim_console);
- return 0;
-}
-
-static int sim_remove(struct platform_device *pdev)
+static int __init sim_setup(struct earlycon_device *device, const char *opt)
{
+ device->con->write = sim_write;
return 0;
}
-static struct platform_driver sim_driver = {
- .probe = sim_probe,
- .remove = sim_remove,
- .driver = {
- .name = "h8300-sim",
- .owner = THIS_MODULE,
- },
-};
-
-early_platform_init_buffer("earlyprintk", &sim_driver,
- sim_console_buf, ARRAY_SIZE(sim_console_buf));
-
-static struct platform_device sim_console_device = {
- .name = "h8300-sim",
- .id = 0,
-};
-
-static struct platform_device *devices[] __initdata = {
- &sim_console_device,
-};
-
-void __init sim_console_register(void)
-{
- early_platform_add_devices(devices,
- ARRAY_SIZE(devices));
-}
+EARLYCON_DECLARE(h8sim, sim_setup);