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Date: Fri, 5 Feb 2016 20:15:02 +0200 From: Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com> To: tony@...mide.com, linux@....linux.org.uk Cc: linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org, pali.rohar@...il.com, arnd@...db.de, Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com> Subject: [PATCH] ARM: RX51: Set system_rev from ATAGS Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com> --- 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
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