From mboxrd@z Thu Jan 1 00:00:00 1970 From: ivo.g.dimitrov.75@gmail.com (Ivaylo Dimitrov) Date: Fri, 5 Feb 2016 20:15:02 +0200 Subject: [PATCH] ARM: RX51: Set system_rev from ATAGS In-Reply-To: <3663322.UyrB2OmX6o@wuerfel> References: <3663322.UyrB2OmX6o@wuerfel> Message-ID: <1454696102-2214-1-git-send-email-ivo.g.dimitrov.75@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Ivaylo Dimitrov --- 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 #include +#include #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