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

[Jagan Teki]

On Mon, Feb 17, 2014 at 6:34 PM, Andrew Murray
<amurray at embedded-bits.co.uk> wrote:
> 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.

Yes - we can use, thanks for pointing.

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

thanks!
-- 
Jagan.