MK808 is a RK3066-based board with 1 USB host and 1 USB OTG port, HDMI and a micro-SD card slot. It also includes on-board NAND and 1GB of SDRAM.
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Boot procedure flow for a Rockchip rk3066 SoC:
1.Read 2K SDRAM initialization image code to internal SRAM 2.Run image code to do SDRAM initialization 3.Transfer boot image code to SDRAM 4.Run boot image code
Supported system boot from the following devices: Nand Flash SPI nor Flash eMMC device UART interface
If all boot options fail then enter into BootROM mode on the USB OTG port. Unlike later SoC models the rk3066 BootROM doesn't have SDMMC support.
The size of a full U-boot binary is too large for the internal SDRAM memory. Of that 64k size only 32kb sram - 2kb bootrom is available for the first stage.
Similar to the already supported rk3188, the BootROM will attempt to load up the first stage image in two steps: first 1KB to offset 0x800 in the SRAM and then the remainder to offset 0xc00 in the SRAM. It always enters at offset 0x804 after a 4 ASCII character "RK30" header.
With CONFIG_TPL_ROCKCHIP_EARLYRETURN_TO_BROM=y this first stage is combined with the U-boot TPL binary (u-boot-tpl.bin).
For rk3066 with NAND flash and U-boot this gives the following stages:
- TPL: init external SDRAM - SPL: init SDMMC and read U-boot from SD CARD. - U-boot: read Linux kernel from SD CARD. - Kernel
Additionally the rk3066 requires everything the BootROM loads to be RC4-encrypted.
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Boot solution with full U-boot stored on SD CARD:
Compile commands(U-boot):
ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make mk808_defconfig ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make menuconfig ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make all
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Size of SPL and TPL must be aligned to 2kb. If bricked and no BootROM mode shows up then connect pin 8 and 9 of the NAND flash with a needle while reconnecting to the USB OTG port to a PC.
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Show connected devices with:
lsusb
Bus 001 Device 004: ID 2207:300a Fuzhou Rockchip Electronics Company RK3066 in Mask ROM mode
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Program commands with ./flash.sh:
#!/bin/sh
printf "RK30" > tplspl.bin dd if=u-boot-tpl.bin >> tplspl.bin truncate -s %2048 tplspl.bin truncate -s %2048 u-boot-spl.bin ../tools/boot_merger --verbose config-flash.ini ../tools/upgrade_tool ul ./RK30xxLoader_uboot.bin
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config-flash.ini:
[CHIP_NAME] NAME=RK30 [VERSION] MAJOR=2 MINOR=21 [CODE471_OPTION] NUM=1 Path1=30_LPDDR2_300MHz_DD.bin [CODE472_OPTION] NUM=1 Path1=rk30usbplug.bin [LOADER_OPTION] NUM=2 LOADER1=FlashData LOADER2=FlashBoot FlashData=tplspl.bin FlashBoot=u-boot-spl.bin [OUTPUT] PATH=RK30xxLoader_uboot.bin
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Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name Attributes Type GUID Partition GUID 1 0x00000040 0x00001f7f "loader1" 2 0x00004000 0x00005fff "loader2" 3 0x00006000 0x00007fff "trust" 4 0x00008000 0x0003ffff "boot" 5 0x00040000 0x00ed7fde "rootfs"
Make sure boot and esp flag are set for boot partition. Loader1 not used by
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Boot partition:
extlinux -- extlinux.conf zImage rk3066a-mk808.dtb
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extlinux.conf:
label kernel kernel /zImage fdt /rk3066a-mk808.dtb append root=LABEL=linuxroot init=/sbin/init rootfstype=ext4 rootwait
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Program commands (SD CARD with GPT partition):
sudo dd if=u-boot-dtb.img of=/dev/sda seek=16384
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TODO: Better program flow/tools USB NAND etc etc
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Johan Jonker (11): rockchip: rk3066-power: sync power domain dt-binding header from Linux arm: dts: rockchip: fix rk3xxx-u-boot.dtsi arm: dts: rockchip: add rk3066a.dtsi arm: dts: rockchip: add rk3066a-mk808.dts rockchip: rk3066: add include rockchip: rk3066: add rk3066_common.h include rockchip: rk3066: add core support rockchip: rk3066: add Rikomagic MK808 board rockchip: rk3066: add mk808_defconfig rockchip: tools: add rk3066 support to rkcommon.c doc: rockchip: add rk3066 Rikomagic MK808
Paweł Jarosz (4): rockchip: rk3066: add grf header file rockchip: rk3066: add clock driver for rk3066 soc rockchip: rk3066: add rk3066 pinctrl driver rockchip: rk3066: add sdram driver
arch/arm/dts/Makefile | 3 + arch/arm/dts/rk3066a-mk808-u-boot.dtsi | 42 + arch/arm/dts/rk3066a-mk808.dts | 216 +++++ arch/arm/dts/rk3066a-u-boot.dtsi | 3 + arch/arm/dts/rk3066a.dtsi | 880 +++++++++++++++++ arch/arm/dts/rk3xxx-u-boot.dtsi | 8 +- arch/arm/include/asm/arch-rk3066/boot0.h | 8 + arch/arm/include/asm/arch-rk3066/gpio.h | 8 + arch/arm/include/asm/arch-rk3066/timer.h | 6 + .../include/asm/arch-rockchip/cru_rk3066.h | 157 +++ .../include/asm/arch-rockchip/grf_rk3066.h | 210 +++++ arch/arm/mach-rockchip/Kconfig | 23 + arch/arm/mach-rockchip/Makefile | 1 + arch/arm/mach-rockchip/rk3066/Kconfig | 39 + arch/arm/mach-rockchip/rk3066/Makefile | 5 + arch/arm/mach-rockchip/rk3066/clk_rk3066.c | 33 + arch/arm/mach-rockchip/rk3066/rk3066.c | 49 + arch/arm/mach-rockchip/rk3066/syscon_rk3066.c | 55 ++ board/rikomagic/mk808/Kconfig | 15 + board/rikomagic/mk808/MAINTAINERS | 6 + board/rikomagic/mk808/Makefile | 3 + board/rikomagic/mk808/mk808.c | 3 + configs/mk808_defconfig | 99 ++ doc/board/rockchip/rockchip.rst | 2 + drivers/clk/rockchip/Makefile | 1 + drivers/clk/rockchip/clk_rk3066.c | 717 ++++++++++++++ drivers/pinctrl/rockchip/Makefile | 1 + drivers/pinctrl/rockchip/pinctrl-rk3066.c | 113 +++ drivers/ram/rockchip/Makefile | 1 + drivers/ram/rockchip/sdram_rk3066.c | 892 ++++++++++++++++++ include/configs/mk808.h | 9 + include/configs/rk3066_common.h | 56 ++ include/dt-bindings/power/rk3066-power.h | 22 + tools/rkcommon.c | 1 + 34 files changed, 3683 insertions(+), 4 deletions(-) create mode 100644 arch/arm/dts/rk3066a-mk808-u-boot.dtsi create mode 100644 arch/arm/dts/rk3066a-mk808.dts create mode 100644 arch/arm/dts/rk3066a-u-boot.dtsi create mode 100644 arch/arm/dts/rk3066a.dtsi create mode 100644 arch/arm/include/asm/arch-rk3066/boot0.h create mode 100644 arch/arm/include/asm/arch-rk3066/gpio.h create mode 100644 arch/arm/include/asm/arch-rk3066/timer.h create mode 100644 arch/arm/include/asm/arch-rockchip/cru_rk3066.h create mode 100644 arch/arm/include/asm/arch-rockchip/grf_rk3066.h create mode 100644 arch/arm/mach-rockchip/rk3066/Kconfig create mode 100644 arch/arm/mach-rockchip/rk3066/Makefile create mode 100644 arch/arm/mach-rockchip/rk3066/clk_rk3066.c create mode 100644 arch/arm/mach-rockchip/rk3066/rk3066.c create mode 100644 arch/arm/mach-rockchip/rk3066/syscon_rk3066.c create mode 100644 board/rikomagic/mk808/Kconfig create mode 100644 board/rikomagic/mk808/MAINTAINERS create mode 100644 board/rikomagic/mk808/Makefile create mode 100644 board/rikomagic/mk808/mk808.c create mode 100644 configs/mk808_defconfig create mode 100644 drivers/clk/rockchip/clk_rk3066.c create mode 100644 drivers/pinctrl/rockchip/pinctrl-rk3066.c create mode 100644 drivers/ram/rockchip/sdram_rk3066.c create mode 100644 include/configs/mk808.h create mode 100644 include/configs/rk3066_common.h create mode 100644 include/dt-bindings/power/rk3066-power.h