ARM: 7254/1: restart: S3C24XX: move SWRST based S3C platforms to

S3C2412/S3C2416/S3C2443 use a special register to signal the reset to
the processor and used therefore the s3c24xx_reset_hook mechanism in the
s3c24xx-specific arch reset.

This patch introduces restart functions for these architectures,
moves the board files to them and removes the s3c24xx_reset_hook
infrastructure, as all users are gone.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

14 files changed, 27 insertions, 42 deletions

diff --git a/arch/arm/mach-s3c2410/include/mach/reset.h b/arch/arm/mach-s3c2410/include/mach/reset.h
deleted file mode 100644
index f8c9387b049d..000000000000
--- a/arch/arm/mach-s3c2410/include/mach/reset.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* arch/arm/mach-s3c2410/include/mach/reset.h
- *
- * Copyright (c) 2007 Simtec Electronics
- *      Ben Dooks <ben@simtec.co.uk>
- *      http://armlinux.simtec.co.uk/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * S3C2410 CPU reset controls
-*/
-
-#ifndef __ASM_ARCH_RESET_H
-#define __ASM_ARCH_RESET_H __FILE__
-
-/* This allows the over-ride of the default reset code
-*/
-
-extern void (*s3c24xx_reset_hook)(void);
-
-#endif /* __ASM_ARCH_RESET_H */
diff --git a/arch/arm/mach-s3c2410/include/mach/system-reset.h b/arch/arm/mach-s3c2410/include/mach/system-reset.h
index 913893d44650..1e495f35ddd2 100644
--- a/arch/arm/mach-s3c2410/include/mach/system-reset.h
+++ b/arch/arm/mach-s3c2410/include/mach/system-reset.h
@@ -13,8 +13,6 @@
 #include <mach/hardware.h>
 #include <plat/watchdog-reset.h>
 
-extern void (*s3c24xx_reset_hook)(void);
-
 static void
 arch_reset(char mode, const char *cmd)
 {
@@ -22,9 +20,6 @@ arch_reset(char mode, const char *cmd)
                 soft_restart(0);
         }
 
-        if (s3c24xx_reset_hook)
-                s3c24xx_reset_hook();
-
         arch_wdt_reset();
 
         /* we'll take a jump through zero as a poor second */
diff --git a/arch/arm/mach-s3c2410/include/mach/system.h b/arch/arm/mach-s3c2410/include/mach/system.h
index a8cbca6701e5..eef8f24628e3 100644
--- a/arch/arm/mach-s3c2410/include/mach/system.h
+++ b/arch/arm/mach-s3c2410/include/mach/system.h
@@ -15,12 +15,10 @@
 
 #include <mach/map.h>
 #include <mach/idle.h>
-#include <mach/reset.h>
 
 #include <mach/regs-clock.h>
 
 void (*s3c24xx_idle)(void);
-void (*s3c24xx_reset_hook)(void);
 
 void s3c24xx_default_idle(void)
 {
diff --git a/arch/arm/mach-s3c2412/mach-jive.c b/arch/arm/mach-s3c2412/mach-jive.c
index 286ef1738c61..ae73ba34ecc6 100644
--- a/arch/arm/mach-s3c2412/mach-jive.c
+++ b/arch/arm/mach-s3c2412/mach-jive.c
@@ -48,6 +48,7 @@
 #include <linux/mtd/nand_ecc.h>
 #include <linux/mtd/partitions.h>
 
+#include <plat/s3c2412.h>
 #include <plat/gpio-cfg.h>
 #include <plat/clock.h>
 #include <plat/devs.h>
@@ -661,4 +662,5 @@ MACHINE_START(JIVE, "JIVE")
         .map_io         = jive_map_io,
         .init_machine   = jive_machine_init,
         .timer          = &s3c24xx_timer,
+        .restart        = s3c2412_restart,
 MACHINE_END
diff --git a/arch/arm/mach-s3c2412/mach-smdk2413.c b/arch/arm/mach-s3c2412/mach-smdk2413.c
index f1eec1b54932..b11451b853d8 100644
--- a/arch/arm/mach-s3c2412/mach-smdk2413.c
+++ b/arch/arm/mach-s3c2412/mach-smdk2413.c
@@ -134,6 +134,7 @@ MACHINE_START(S3C2413, "S3C2413")
         .map_io         = smdk2413_map_io,
         .init_machine   = smdk2413_machine_init,
         .timer          = &s3c24xx_timer,
+        .restart        = s3c2412_restart,
 MACHINE_END
 
 MACHINE_START(SMDK2412, "SMDK2412")
@@ -145,6 +146,7 @@ MACHINE_START(SMDK2412, "SMDK2412")
         .map_io         = smdk2413_map_io,
         .init_machine   = smdk2413_machine_init,
         .timer          = &s3c24xx_timer,
+        .restart        = s3c2412_restart,
 MACHINE_END
 
 MACHINE_START(SMDK2413, "SMDK2413")
@@ -156,4 +158,5 @@ MACHINE_START(SMDK2413, "SMDK2413")
         .map_io         = smdk2413_map_io,
         .init_machine   = smdk2413_machine_init,
         .timer          = &s3c24xx_timer,
+        .restart        = s3c2412_restart,
 MACHINE_END
diff --git a/arch/arm/mach-s3c2412/mach-vstms.c b/arch/arm/mach-s3c2412/mach-vstms.c
index 1bbb1ef5f4ff..94bfaa1fb148 100644
--- a/arch/arm/mach-s3c2412/mach-vstms.c
+++ b/arch/arm/mach-s3c2412/mach-vstms.c
@@ -162,4 +162,5 @@ MACHINE_START(VSTMS, "VSTMS")
         .init_machine   = vstms_init,
         .map_io         = vstms_map_io,
         .timer          = &s3c24xx_timer,
+        .restart        = s3c2412_restart,
 MACHINE_END
diff --git a/arch/arm/mach-s3c2412/s3c2412.c b/arch/arm/mach-s3c2412/s3c2412.c
index 57a1e01e4e50..867ce2e269f6 100644
--- a/arch/arm/mach-s3c2412/s3c2412.c
+++ b/arch/arm/mach-s3c2412/s3c2412.c
@@ -32,7 +32,6 @@
 #include <asm/proc-fns.h>
 #include <asm/irq.h>
 
-#include <mach/reset.h>
 #include <mach/idle.h>
 
 #include <plat/cpu-freq.h>
@@ -131,8 +130,11 @@ static void s3c2412_idle(void)
         cpu_do_idle();
 }
 
-static void s3c2412_hard_reset(void)
+void s3c2412_restart(char mode, const char *cmd)
 {
+        if (mode == 's')
+                soft_restart(0);
+
         /* errata "Watch-dog/Software Reset Problem" specifies that
          * this reset must be done with the SYSCLK sourced from
          * EXTCLK instead of FOUT to avoid a glitch in the reset
@@ -164,10 +166,6 @@ void __init s3c2412_map_io(void)
 
         s3c24xx_idle = s3c2412_idle;
 
-        /* set custom reset hook */
-
-        s3c24xx_reset_hook = s3c2412_hard_reset;
-
         /* register our io-tables */
 
         iotable_init(s3c2412_iodesc, ARRAY_SIZE(s3c2412_iodesc));
diff --git a/arch/arm/mach-s3c2416/mach-smdk2416.c b/arch/arm/mach-s3c2416/mach-smdk2416.c
index a9eee531ca76..66b71736609c 100644
--- a/arch/arm/mach-s3c2416/mach-smdk2416.c
+++ b/arch/arm/mach-s3c2416/mach-smdk2416.c
@@ -251,4 +251,5 @@ MACHINE_START(SMDK2416, "SMDK2416")
         .map_io         = smdk2416_map_io,
         .init_machine   = smdk2416_machine_init,
         .timer          = &s3c24xx_timer,
+        .restart        = s3c2416_restart,
 MACHINE_END
diff --git a/arch/arm/mach-s3c2416/s3c2416.c b/arch/arm/mach-s3c2416/s3c2416.c
index ee214bc83c83..46062232bbc7 100644
--- a/arch/arm/mach-s3c2416/s3c2416.c
+++ b/arch/arm/mach-s3c2416/s3c2416.c
@@ -44,7 +44,6 @@
 #include <asm/proc-fns.h>
 #include <asm/irq.h>
 
-#include <mach/reset.h>
 #include <mach/idle.h>
 #include <mach/regs-s3c2443-clock.h>
 
@@ -76,8 +75,11 @@ static struct sys_device s3c2416_sysdev = {
         .cls            = &s3c2416_sysclass,
 };
 
-static void s3c2416_hard_reset(void)
+void s3c2416_restart(char mode, const char *cmd)
 {
+        if (mode == 's')
+                soft_restart(0);
+
         __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
 }
 
@@ -85,7 +87,6 @@ int __init s3c2416_init(void)
 {
         printk(KERN_INFO "S3C2416: Initializing architecture\n");
 
-        s3c24xx_reset_hook = s3c2416_hard_reset;
         /* s3c24xx_idle = s3c2416_idle; */
 
         /* change WDT IRQ number */
diff --git a/arch/arm/mach-s3c2443/mach-smdk2443.c b/arch/arm/mach-s3c2443/mach-smdk2443.c
index bec107e00441..209236956222 100644
--- a/arch/arm/mach-s3c2443/mach-smdk2443.c
+++ b/arch/arm/mach-s3c2443/mach-smdk2443.c
@@ -145,4 +145,5 @@ MACHINE_START(SMDK2443, "SMDK2443")
         .map_io         = smdk2443_map_io,
         .init_machine   = smdk2443_machine_init,
         .timer          = &s3c24xx_timer,
+        .restart        = s3c2443_restart,
 MACHINE_END
diff --git a/arch/arm/mach-s3c2443/s3c2443.c b/arch/arm/mach-s3c2443/s3c2443.c
index a22b771b0f36..4568ded338d0 100644
--- a/arch/arm/mach-s3c2443/s3c2443.c
+++ b/arch/arm/mach-s3c2443/s3c2443.c
@@ -31,7 +31,6 @@
 #include <asm/irq.h>
 
 #include <mach/regs-s3c2443-clock.h>
-#include <mach/reset.h>
 
 #include <plat/gpio-core.h>
 #include <plat/gpio-cfg.h>
@@ -57,8 +56,11 @@ static struct sys_device s3c2443_sysdev = {
         .cls            = &s3c2443_sysclass,
 };
 
-static void s3c2443_hard_reset(void)
+void s3c2443_restart(char mode, const char *cmd)
 {
+        if (mode == 's')
+                soft_restart(0);
+
         __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
 }
 
@@ -66,8 +68,6 @@ int __init s3c2443_init(void)
 {
         printk("S3C2443: Initialising architecture\n");
 
-        s3c24xx_reset_hook = s3c2443_hard_reset;
-
         s3c_nand_setname("s3c2412-nand");
         s3c_fb_setname("s3c2443-fb");
 
diff --git a/arch/arm/plat-samsung/include/plat/s3c2412.h b/arch/arm/plat-samsung/include/plat/s3c2412.h
index 5bcfd143ba16..cbae50ddacc8 100644
--- a/arch/arm/plat-samsung/include/plat/s3c2412.h
+++ b/arch/arm/plat-samsung/include/plat/s3c2412.h
@@ -21,9 +21,12 @@ extern void s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no);
 extern void s3c2412_init_clocks(int xtal);
 
 extern  int s3c2412_baseclk_add(void);
+
+extern void s3c2412_restart(char mode, const char *cmd);
 #else
 #define s3c2412_init_clocks NULL
 #define s3c2412_init_uarts NULL
 #define s3c2412_map_io NULL
 #define s3c2412_init NULL
+#define s3c2412_restart NULL
 #endif
diff --git a/arch/arm/plat-samsung/include/plat/s3c2416.h b/arch/arm/plat-samsung/include/plat/s3c2416.h
index a764f8503f52..de2b5bdc5ebd 100644
--- a/arch/arm/plat-samsung/include/plat/s3c2416.h
+++ b/arch/arm/plat-samsung/include/plat/s3c2416.h
@@ -23,9 +23,11 @@ extern void s3c2416_init_clocks(int xtal);
 
 extern  int s3c2416_baseclk_add(void);
 
+extern void s3c2416_restart(char mode, const char *cmd);
 #else
 #define s3c2416_init_clocks NULL
 #define s3c2416_init_uarts NULL
 #define s3c2416_map_io NULL
 #define s3c2416_init NULL
+#define s3c2416_restart NULL
 #endif
diff --git a/arch/arm/plat-samsung/include/plat/s3c2443.h b/arch/arm/plat-samsung/include/plat/s3c2443.h
index 7fae1a050694..dce05b43d51c 100644
--- a/arch/arm/plat-samsung/include/plat/s3c2443.h
+++ b/arch/arm/plat-samsung/include/plat/s3c2443.h
@@ -24,11 +24,13 @@ extern void s3c2443_init_clocks(int xtal);
 
 extern  int s3c2443_baseclk_add(void);
 
+extern void s3c2443_restart(char mode, const char *cmd);
 #else
 #define s3c2443_init_clocks NULL
 #define s3c2443_init_uarts NULL
 #define s3c2443_map_io NULL
 #define s3c2443_init NULL
+#define s3c2443_restart NULL
 #endif
 
 /* common code used by s3c2443 and others.