[U-Boot] [PATCH v2 1/3] arm: add CONFIG_MACH_TYPE setting and documentation

[Chander Kashyap]

dear Igor,


On 14 July 2011 21:15, Igor Grinberg <grinberg at compulab.co.il> wrote:
> CONFIG_MACH_TYPE is used to set the machine type number in the
> common arm code instead of setting it in the board code.
> Boards with dynamically discoverable machine types can still set the
> machine type number in the board code.
>
> Signed-off-by: Igor Grinberg <grinberg at compulab.co.il>
> ---
> v2:     Document the option as mandatory.
>        Move the bi_arch_number setting to board_init_f()
>
>  README               |   10 ++++++++++
>  arch/arm/lib/board.c |    4 ++++
>  2 files changed, 14 insertions(+), 0 deletions(-)
>
> diff --git a/README b/README
> index 446966d..0b6802d 100644
> --- a/README
> +++ b/README
> @@ -442,6 +442,16 @@ The following options need to be configured:
>                crash. This is needed for buggy hardware (uc101) where
>                no pull down resistor is connected to the signal IDE5V_DD7.
>
> +               CONFIG_MACH_TYPE        [relevant for ARM only][mandatory]
> +
> +               This setting is mandatory for all boards that have only one
> +               machine type and must be used to specify the machine type
> +               number as it appears in the ARM machine registry
> +               (see http://www.arm.linux.org.uk/developer/machines/).
> +               Only boards that have multiple machine types supported
> +               in a single configuration file and the machine type is
> +               runtime discoverable, do not have to use this setting.
> +
>  - vxWorks boot parameters:
>
>                bootvx constructs a valid bootline using the following
> diff --git a/arch/arm/lib/board.c b/arch/arm/lib/board.c
> index 169dfeb..9901694 100644
> --- a/arch/arm/lib/board.c
> +++ b/arch/arm/lib/board.c
> @@ -281,6 +281,10 @@ void board_init_f (ulong bootflag)
>
>        gd->mon_len = _bss_end_ofs;
>
> +#ifdef CONFIG_MACH_TYPE
> +       gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
> +#endif
> +
bd structure is not initialised by this time.
It leads to u-boot hanging for my board.
I fixed this problem but modifying it. Below is the patch attached for the same.

>        for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
>                if ((*init_fnc_ptr)() != 0) {
>                        hang ();
> --
> 1.7.3.4
>
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