U-Boot for Rockchip

absolutely no warranty. you have to know how to unbrick your device. only for developers.

source

build

RK3288

 is the official toolchain.

UserManual

make rk3288_config
make

RK3188/RK3066/RK3068/PX2

 is the official toolchain.

UserManual

make rk30xx

binaries

• RK3288 eMMC/SDCARD (u-boot-rk3288 branch) bootloader on eMMC is prior to bootloader on SDCARD!
• RK3188 NAND/SDCARD (u-boot-rk3188 and u-boot-rk3188-sdcard branch)
• RK3066/RK3068 NAND (u-boot-rk3066 branch)
• PX2 eMMC (u-boot-px2 branch)

How to

boot kernel without flashing (RK3288)

enter fastboot mode e.g.

rkflashtool b 0xf6

unlock fastboot (first time only)

fastboot -i 0x2207 oem unlock
fastboot -i 0x2207 oem unlock_accept

boot kernel

fastboot -i 0x2207 boot zImage

boot kernel without flashing (RK3188/RK3066/RK3068/PX2)

rkflashtool M 0x62000000 0x1000000 < ramdisk.img
rkflashtool M 0x63000000 0x1000000 < kernel.img
rkflashtool M 0x64000000 0x1000000 < parameter.img
rkflashtool B 0x63000000 0x64000000

you may omit rkcrc header from ramdisk and/or parameter.

if you omit rkcrc header from kernel, it will not be relocated to the load address described in KERNEL_IMG: line in parameter. (i.e. kernel needs to be coded to start at 0x63000000 in above case)

discuss

#linux-rockchip at freenode

see also