Difference between revisions of "Rock/U-Boot"

Revision as of 11:45, 4 January 2015

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Features

both Rockchip proprietary USB protocol and fastboot USB protocol are supported (Rockchip USB tools works)
format of partitions (images) are compatible to Rockchip proprietary bootloader (rkcrc, mkbootimg works)
(need more investigation...)

Build

git clone https://github.com/radxa/u-boot-rockchip.git
cd u-boot-rockchip
export ARCH=arm
export CROSS_COMPILE=arm-linux-gnueabihf-
make rk30xx

The binary we need for nand flash is RK3188Loader_miniall.bin and uboot.img.

Flash

refer flash image page erase current loader

   sudo upgrade_tool ef RK3188Loader_miniall.bin

flash new loader

   sudo upgrade_tool ul RK3188Loader_miniall.bin

format NAND (first time only)

   sudo upgrade_tool lf

flash U-Boot

   sudo upgrade_tool wl 0x2000 uboot.img
   sudo upgrade_tool rd

Booting log can be found at: http://paste.ubuntu.com/9623598/

Develop

Some important files and directories related to the Rockchip platform:

 * UserManual - documentation
 * include/configs/rk30xx.h - configuration file
 * tools/rk_tools

 * board/rockchip
    ├── common
    │   ├── armlinux
    │   ├── common
    │   │   ├── A8MMU
    │   │   ├── crc
    │   │   ├── emmc
    │   │   ├── fat
    │   │   ├── rc4
    │   │   ├── rockusb
    │   │   ├── serial_p9
    │   │   └── SPI
    │   └── platform
    │       ├── rk2928
    │       └── rk30
    └── rk30xx

 * arch/arm/cpu/armv7/rk30xx
 * arch/arm/include/asm/arch-rk30xx

Unbrick

If something goes wrong and your device doesn't boot anymore, read Unbrick Rock.

External links

http://androtab.info/rockchip/u-boot/ (working binaries)
https://github.com/linux-rockchip/u-boot-rockchip (some improvement)

@@ Line 19: / Line 19: @@
 == Flash ==
 refer [[rock/flash_the_image| flash image page]]
+erase current loader
+    sudo upgrade_tool ef RK3188Loader_miniall.bin
-     sudo upgade_tool ul RK3188Loader_miniall.bin
+flash new loader
+     sudo upgrade_tool ul RK3188Loader_miniall.bin
+format NAND (first time only)
+    sudo upgrade_tool lf
+flash U-Boot
      sudo upgrade_tool wl 0x2000 uboot.img
      sudo upgrade_tool rd