[PATCH] ARM: RX51: Set system_rev from ATAGS
From: Ivaylo Dimitrov <hidden>
Date: 2016-02-05 18:16:10
Also in:
linux-omap, lkml
Subsystem:
arm port, omap2+ support, the rest · Maintainers:
Russell King, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Signed-off-by: Ivaylo Dimitrov <redacted> --- arch/arm/mach-omap2/board-generic.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 8098272..b91fabe 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c@@ -18,6 +18,7 @@ #include <asm/setup.h> #include <asm/mach/arch.h> +#include <asm/system_info.h> #include "common.h"
@@ -77,12 +78,31 @@ static const char *const n900_boards_compat[] __initconst = { NULL, }; +/* Set system_rev from atags */ +static void __init rx51_system_rev(const struct tag *tags) +{ + const struct tag *tag; + + if (tags->hdr.tag != ATAG_CORE) + return; + + for_each_tag(tag, tags) { + if (tag->hdr.tag == ATAG_REVISION) { + system_rev = tag->u.revision.rev; + break; + } + } +} + /* 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)); + const struct tag *tags = (const struct tag *)(PAGE_OFFSET + 0x100); + + save_atags(tags); + rx51_system_rev(tags); omap_reserve(); }
--
1.9.1