[U-Boot] [PATCH v3 5/7] zynq: Add support for auto nandboot

[Andrew Murray]

On 17 February 2014 12:26, Siva Durga Prasad Paladugu
<siva.durga.paladugu at xilinx.com> wrote:
> From: Jagannadha Sutradharudu Teki <jaganna at xilinx.com>
>
> Added support to find the nand bootmode and also
> updated the default env. with nandboot.
>
> Signed-off-by: Siva Durga Prasad Paladugu <sivadur at xilinx.com>
> Signed-off-by: Jagannadha Sutradharudu Teki <jaganna at xilinx.com>
> ---
> Changes for v3:
> -Separated out the nand patch series
>  as per Michal comment.
> Changes for v2:
> -None
> ---
>  board/xilinx/zynq/board.c     |    4 ++++
>  doc/README.zynq               |    3 ++-
>  include/configs/zynq-common.h |    3 +++
>  3 files changed, 9 insertions(+), 1 deletions(-)
>
> diff --git a/board/xilinx/zynq/board.c b/board/xilinx/zynq/board.c
> index 5a47149..9dd158c 100644
> --- a/board/xilinx/zynq/board.c
> +++ b/board/xilinx/zynq/board.c
> @@ -15,6 +15,7 @@ DECLARE_GLOBAL_DATA_PTR;
>  /* Bootmode setting values */
>  #define ZYNQ_BM_MASK           0x0F
>  #define ZYNQ_BM_NOR            0x02
> +#define ZYNQ_BM_NAND           0x04
>  #define ZYNQ_BM_SD             0x05
>  #define ZYNQ_BM_JTAG           0x0
>
> @@ -75,6 +76,9 @@ int board_late_init(void)
>         case ZYNQ_BM_NOR:
>                 setenv("modeboot", "norboot");
>                 break;
> +       case ZYNQ_BM_NAND:
> +               setenv("modeboot", "nandboot");
> +               break;
>         case ZYNQ_BM_SD:
>                 setenv("modeboot", "sdboot");
>                 break;
> diff --git a/doc/README.zynq b/doc/README.zynq
> index 043c970..e0b38cf 100644
> --- a/doc/README.zynq
> +++ b/doc/README.zynq
> @@ -54,10 +54,11 @@ is intern used in autoboot.
>
>  SLCR bootmode register Bit[3:0] values
>  #define ZYNQ_BM_NOR            0x02
> +#define ZYNQ_BM_NOR            0x04
>  #define ZYNQ_BM_SD             0x05
>  #define ZYNQ_BM_JTAG           0x0
>
> -"modeboot" variable can assign any of "norboot", "sdboot" or "jtagboot"
> +"modeboot" variable can assign any of "norboot", "nandboot", "sdboot" or "jtagboot"
>  bootmode strings at runtime.
>
>  5. Mainline status
> diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h
> index 08adaa2..068e59a 100644
> --- a/include/configs/zynq-common.h
> +++ b/include/configs/zynq-common.h
> @@ -170,6 +170,9 @@
>         "norboot=echo Copying FIT from NOR flash to RAM... && " \
>                 "cp.b ${nor_flash_off} ${load_addr} ${fit_size} && " \
>                 "bootm ${load_addr}\0" \
> +       "nandboot=echo Copying FIT from NAND flash to RAM... && " \
> +               "nand read ${load_addr} ${flash_off} ${fit_size} && " \
> +               "bootm ${load_addr}\0" \

Is there an opportunity to use 'nboot' here? i.e. nboot ${load_addr} 0
${flash_off} (instead of nand read and bootm)

This would mean you don't waste time reading NAND you don't use and
you don't have to worry about maintaining ${fit_size} whenever the
kernel changes size.

Andrew Murray

>         "sdboot=echo Copying FIT from SD to RAM... && " \
>                 "fatload mmc 0 ${load_addr} ${fit_image} && " \
>                 "bootm ${load_addr}\0" \
> --
> 1.7.4
>
>
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