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Commit 8c51b034 authored by Ivaylo Dimitrov's avatar Ivaylo Dimitrov Committed by Russell King
Browse files

ARM: 8496/1: OMAP: RX51: save ATAGS data in the early boot stage 



This fixes a regression with device tree based booting compared to legacy booting for n900 to make the n900 legacy user space to also work with device tree based booting

Signed-off-by: default avatarIvaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 6e0306a9

arch/arm/mach-omap2/board-generic.c

+11 −1
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/of_platform.h>

#include <linux/irqdomain.h>



#include <asm/setup.h>

#include <asm/mach/arch.h>



#include "common.h"
@@ -76,8 +77,17 @@ static const char *const n900_boards_compat[] __initconst = { 
	NULL,

};



/* Legacy userspace on Nokia N900 needs ATAGS exported in /proc/atags,

 * save them while the data is still not overwritten

 */

static void __init rx51_reserve(void)

{

	save_atags((const struct tag *)(PAGE_OFFSET + 0x100));

	omap_reserve();

}



DT_MACHINE_START(OMAP3_N900_DT, "Nokia RX-51 board")

	.reserve	= omap_reserve,

	.reserve	= rx51_reserve,

	.map_io		= omap3_map_io,

	.init_early	= omap3430_init_early,

	.init_machine	= omap_generic_init,