[U-Boot] i.MX6 boot mode on SRC_SBMR1

[Igor Grinberg]

On 05/12/15 01:09, Troy Kisky wrote:
> On 5/11/2015 3:24 AM, Palacios, Hector wrote:
>> Hello Troy,
>>
>> Code comments on commit 124a06d7fbbf82f47304d499418460312a725ad6 for forcing the boot mode say:
>>
>> +/*
>> + * cfg_val will be used for
>> + * Boot_cfg4[7:0]:Boot_cfg3[7:0]:Boot_cfg2[7:0]:Boot_cfg1[7:0]
>> + * After reset, if GPR10[28] is 1, ROM will copy GPR9[25:0]
>> + * to SBMR1, which will determine the boot device.
>> + */
>>
>>
>> Although this works (the ROM boots from the media configured in GPR9[25:0] if GPR10[28] is set), the value of SBMR1 does not really change, as the comment says, and is still the one read by the strapping.
>>
>> I didn't find this documented on the HRM. Where did you find it?
>>
>> Thanks
>> --
>> Héctor Palacios
>>
>>
> In source code from a boot shim from freescale.

BTW, we have observed that the description in the comment is not exact and
therefore commit:
f2863ff (arm: imx: make bmode command work with SPL/U-Boot combo)
fixes also the comment.

-- 
Regards,
Igor.