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

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
...@@ -16,6 +16,7 @@ ...@@ -16,6 +16,7 @@
#include <linux/of_platform.h> #include <linux/of_platform.h>
#include <linux/irqdomain.h> #include <linux/irqdomain.h>
#include <asm/setup.h>
#include <asm/mach/arch.h> #include <asm/mach/arch.h>
#include "common.h" #include "common.h"
...@@ -76,8 +77,17 @@ static const char *const n900_boards_compat[] __initconst = { ...@@ -76,8 +77,17 @@ static const char *const n900_boards_compat[] __initconst = {
NULL, 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") DT_MACHINE_START(OMAP3_N900_DT, "Nokia RX-51 board")
.reserve = omap_reserve, .reserve = rx51_reserve,
.map_io = omap3_map_io, .map_io = omap3_map_io,
.init_early = omap3430_init_early, .init_early = omap3430_init_early,
.init_machine = omap_generic_init, .init_machine = omap_generic_init,
......
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