From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 16 Dec 2010 13:49:34 +0000 (+0000)
Subject: ARM: provide an early platform initialization hook
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=dec12e62c03d26bbc7a142f067215a3a43cce7d0;p=deliverable%2Flinux.git

ARM: provide an early platform initialization hook

This allows platforms to hook into the initialization early to setup
things like scheduler clocks, etc.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index 69908ddbaf18..3a0893a76a3b 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -37,6 +37,7 @@ struct machine_desc {
 					 struct meminfo *);
 	void			(*reserve)(void);/* reserve mem blocks	*/
 	void			(*map_io)(void);/* IO mapping function	*/
+	void			(*init_early)(void);
 	void			(*init_irq)(void);
 	struct sys_timer	*timer;		/* system tick timer	*/
 	void			(*init_machine)(void);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index e53132eee27a..3455ad33de4c 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -880,6 +880,9 @@ void __init setup_arch(char **cmdline_p)
 #endif
 #endif
 	early_trap_init();
+
+	if (mdesc->init_early)
+		mdesc->init_early();
 }