[U-Boot] [PATCH v8 24/28] armv8/ls2085aqds: NAND boot support

[York Sun]

On 03/24/2015 12:49 PM, Scott Wood wrote:
> On Tue, 2015-03-24 at 12:47 -0700, York Sun wrote:
>> +Booting from NAND
>> +-------------------
>> +Booting from NAND requires two images, RCW and u-boot-with-spl.bin.
>> +The difference between NAND boot RCW image and NOR boot image is the PBI
>> +command sequence. Below is one example for PBI commands for QDS.
>> +
>> +1) CCSR 4-byte write to 0x00e00404, data=0x00000000
>> +2) CCSR 4-byte write to 0x00e00400, data=0x1800a000
>> +The above two commands set bootloc register to 0x00000000_1800a000 where
>> +the u-boot code will be running in OCRAM.
>> +
>> +3) Block Copy: SRC=0x0107, SRC_ADDR=0x00100000, DEST_ADDR=0x1800a000,
>> +BLOCK_SIZE=0x00014000
>> +This command copies u-boot image from NAND device into OCRAM. The values need
>> +to adjust accordingly.
>> +
>> +SRC		should match the cfg_rcw_src, the reset config pins. It depends
>> +		on the NAND device. See reference manual for cfg_rcw_src.
>> +SRC_ADDR	is the offset of u-boot image in NAND device. It should match
>> +		CONFIG_SYS_NAND_U_BOOT_OFFS. In the example above, it is 1MB.
> 
> Why 1 MiB?
> 

I got it wrong. I though the erase size is 1MB, but actually it is 128KB. I will
fix it.

York