[U-Boot] [PATCH 3/8] ZOOM2 Add support for debug board detection.

[Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>]

On 22:02 Wed 01 Apr     , Tom Rix wrote:
> https://omapzoom.org/gf/project/omapzoom/wiki/?pagename=GettingStartedWithZoomII_AKA_OMAP34XII_MDP
> 
> The zoom2 has an auxillary board that contains the serial, net, jtag and
> battery simulator.  This change supports a runtime check if the debug board is
> connected.
> 
> Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
> ---
>  board/omap3/zoom2/Makefile      |    3 +-
>  board/omap3/zoom2/debug_board.c |   57 +++++++++++++++++++++++++++++++++++++++
>  2 files changed, 59 insertions(+), 1 deletions(-)
>  create mode 100644 board/omap3/zoom2/debug_board.c
> 
> diff --git a/board/omap3/zoom2/Makefile b/board/omap3/zoom2/Makefile
> index 088b8cb..b8fa5a7 100644
> --- a/board/omap3/zoom2/Makefile
> +++ b/board/omap3/zoom2/Makefile
> @@ -25,7 +25,8 @@ include $(TOPDIR)/config.mk
>  
>  LIB	= $(obj)lib$(BOARD).a
>  
> -COBJS	:= zoom2.o
> +COBJS	:= zoom2.o \
> +	debug_board.o
you do not plan to activate it via a CONFIG only?
>  
>  SRCS	:= $(COBJS:.o=.c)
>  OBJS	:= $(addprefix $(obj),$(COBJS))
> diff --git a/board/omap3/zoom2/debug_board.c b/board/omap3/zoom2/debug_board.c
> new file mode 100644
> index 0000000..782dcb2
> --- /dev/null
> +++ b/board/omap3/zoom2/debug_board.c
> @@ -0,0 +1,57 @@
> +/*
> + * (C) Copyright 2009
> + * Wind River, <www.windriver.com>
> + * Tom Rix <Tom.Rix@windriver.com>
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + *
> + */
> +#include <common.h>
> +#include <asm/arch/cpu.h>
> +#include <asm/io.h>
> +#include <asm/arch/mux.h>
> +
> +#define DEBUG_BOARD_CONNECTED     1
> +#define DEBUG_BOARD_NOT_CONNECTED 0
> +
> +static int debug_board_connected = DEBUG_BOARD_CONNECTED;
why not set it as -1; and then avoid the first_time int?

Best Regards,
J.