Hi3531支持2GByte內存

型號為K4B4G1646B-HCKO

1.修改DDRC_RNKCFG 為 0x142

2.修改arch/arm/mach-godnet/include/mach/vmalloc.h 擴大 vmalloc 區域為 0x7e000000

3.修改內核配置 Memory split 為 2G/2G user/kernel split          

4.修改uboot參數，給操作係統配1GByte內存

setenv bootargs 'mem=1G console=ttyAMA0,115200 root=/dev/mtdblock2 rootfstype=jffs2 mtdparts=hi_sfc:1M(boot),4M(kernel),11M(rootfs);hinand:16G(nand)'

5.修改load3531腳本，給mmz配置1GByte內存

insmod mmz.ko mmz=anonymous,0,0xC0000000,1024M anony=1 || report_error