Am 12.05.2016 um 07:49 schrieb Prabhakar Kushwaha <[email protected]>:
>> -----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's a set of script templates for the default environment that allow you to scan through a number of boot media for potential boot files. With that in place, it's possible to boot a generic OS distribution without special requirements to adjust it specifically for your board: http://git.denx.de/?p=u-boot.git;a=blob;f=doc/README.distro;h=e1b72161521fa8728fde85955ef102b81e19ae22;hb=HEAD > It can be used for other SoC having more than one boot-source With distro boot you could for example host a generic Linux distribution on an SD card, loading its kernel and initrd from there through standardized files and paths. Alex _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
