[U-Boot] [PATCH 09/22][v2] armv8/ls2085a: Increase the supported kernel size

York Sun
2015-05-28T19:02:19Z

On 05/28/2015 11:58 AM, Sharma Bhupesh-B45370 wrote:
> Hi York,
>
> Sorry for missing this comment on v1.
>
>> From: Sun York-R58495
>> Sent: Thursday, May 28, 2015 9:31 PM
>>
>> On 05/28/2015 02:24 AM, Prabhakar Kushwaha wrote:
>>> From: Bhupesh Sharma <bhupesh.sharma@freescale.com>
>>>
>>> Increases the kernel size supported for LS2085A platforms:-
>>> - Update environment variables
>>> - Add ramdisk_size in bootargs env variable
>>> - Define CONFIG_SYS_BOOTM_LEN to 64MB
>>>
>>> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
>>> Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
>>> ---
>>> Changes for v2: sending as it is for patch set
>>>
>>> include/configs/ls2085a_common.h | 9 ++++++---
>>> include/configs/ls2085aqds.h | 2 +-
>>> include/configs/ls2085ardb.h | 2 +-
>>> 3 files changed, 8 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/include/configs/ls2085a_common.h
>> b/include/configs/ls2085a_common.h
>>> index 749c58d..a33b8a9 100644
>>> --- a/include/configs/ls2085a_common.h
>>> +++ b/include/configs/ls2085a_common.h
>>> @@ -248,13 +248,13 @@ unsigned long long get_qixis_addr(void);
>>> "initrd_high=0xffffffffffffffff\0" \
>>> "kernel_start=0x581200000\0" \
>>> "kernel_load=0xa0000000\0" \
>>> - "kernel_size=0x1000000\0" \
>>> + "kernel_size=0x2000000\0" \
>>> "console=ttyAMA0,38400n8\0"
>>
>> I didn't get a respond to my question for v1. How is kernel_size variable
>> used?
>
> This variable is used for our default bootcmd to define the kernel size which needs to be copied
> from the address pointed by the 'kernel_start' variable to the address pointed to by
> the 'kernel_load' variable:
>
> #define CONFIG_BOOTCOMMAND "cp.b $kernel_start $kernel_load " \
> "$kernel_size && bootm $kernel_load"
>

Got it. It is just a short-hand for copying images from NOR flash to RAM.

York