> -----Original Message-----
> From: Alexander Graf [mailto:[email protected]]
> Sent: Thursday, May 12, 2016 3:37 AM
> To: york sun; Prabhakar Kushwaha; [email protected]
> Cc: Pratiyush Srivastava; Abhimanyu Saini
> Subject: Re: [U-Boot] [PATCH 8/9][v2] armv8: ls1012a: Add support of
> ls1012aqds board
> 
> 
> 
> On 11.05.16 17:59, York Sun wrote:
> > On 05/11/2016 12:30 AM, Prabhakar Kushwaha wrote:
> >> QorIQ LS1012A Development System (LS1012AQDS) is a high-performance
> >> development platform, with a complete debugging environment.
> >> The LS1012AQDS board supports the QorIQ LS1012A processor and is
> >> optimized to support the high-bandwidth DDR3L memory and a full
> >> complement of high-speed SerDes ports.
> >>
> >> Signed-off-by: Calvin Johnson <[email protected]>
> >> Signed-off-by: Pratiyush Mohan Srivastava
> >> <[email protected]>
> >> Signed-off-by: Abhimanyu Saini <[email protected]>
> >> Signed-off-by: Prabhakar Kushwaha <[email protected]>
> >> ---
> 
> [...]
> 
> >> +/* Initial environment variables */
> >> +#define CONFIG_EXTRA_ENV_SETTINGS         \
> >> +  "initrd_high=0xffffffff\0"              \
> >> +  "verify=no\0"                           \
> >> +  "hwconfig=fsl_ddr:bank_intlv=auto\0"    \
> >> +  "loadaddr=0x80100000\0"                 \
> >> +  "kernel_addr=0x100000\0"                \
> >> +  "ramdisk_addr=0x800000\0"               \
> >> +  "ramdisk_size=0x2000000\0"              \
> >> +  "fdt_high=0xffffffffffffffff\0"         \
> >> +  "initrd_high=0xffffffffffffffff\0"      \
> >> +  "kernel_start=0xa00000\0"               \
> >> +  "kernel_load=0xa0000000\0"              \
> >> +  "kernel_size=0x2800000\0"               \
> >> +  "console=ttyAMA0,38400n8\0"
> >> +
> >> +#define CONFIG_BOOTARGS           "console=ttyS0,115200
> root=/dev/ram0 " \
> >> +                          "earlycon=uart8250,mmio,0x21c0500"
> >> +#define CONFIG_BOOTCOMMAND                "sf probe 0:0; sf read
> $kernel_load "\
> >> +                                  "$kernel_start $kernel_size && "\
> 
> Is SPI Flash the only boot method envisioned for these system? 


SPI flash is only boot source in LS1012A

> If not, wouldn't it make sense to make use of the distro boot framework?
> 

Will it be possible to share more details on this. 
It can be used for other SoC having more than one boot-source

--prabhakar




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