# SPDX-License-Identifier: GPL-2.0+ # # Copyright (C) 2015 Google. Inc # Written by Simon Glass U-Boot on Rockchip ================== A wide range of Rockchip SoCs are supported in mainline U-Boot Warning ======= This document is being moved to doc/board/rockchip, so information on it might be incomplete or outdated. Prerequisites ============= You will need: - Firefly RK3288 board or something else with a supported RockChip SoC - Power connection to 5V using the supplied micro-USB power cable - Separate USB serial cable attached to your computer and the Firefly (connect to the micro-USB connector below the logo) - rkflashtool [3] - openssl (sudo apt-get install openssl) - Serial UART connection [4] - Suitable ARM cross compiler, e.g.: sudo apt-get install gcc-4.7-arm-linux-gnueabi Building ======== 1. To build RK3288 board: CROSS_COMPILE=arm-linux-gnueabi- make O=firefly firefly-rk3288_defconfig all (or you can use another cross compiler if you prefer) 2. To build RK3308 board: See doc/board/rockchip/rockchip.rst 3. To build RK3399 board: Option 1: Package the image with Rockchip miniloader: - Compile U-Boot => cd /path/to/u-boot => make nanopi-neo4-rk3399_defconfig => make - Get the rkbin => git clone https://github.com/rockchip-linux/rkbin.git - Create trust.img => cd /path/to/rkbin => ./tools/trust_merger RKTRUST/RK3399TRUST.ini - Create uboot.img => cd /path/to/rkbin => ./tools/loaderimage --pack --uboot /path/to/u-boot/u-boot-dtb.bin uboot.img (Get trust.img and uboot.img) Option 2: Package the image with SPL: - Export cross compiler path for aarch64 - Compile ATF => git clone https://github.com/ARM-software/arm-trusted-firmware.git => cd arm-trusted-firmware (export cross compiler path for Cortex-M0 MCU likely arm-none-eabi-) => make realclean => make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3399 (export bl31.elf) => export BL31=/path/to/arm-trusted-firmware/build/rk3399/release/bl31/bl31.elf - Compile PMU M0 firmware This is optional for most of the rk3399 boards. => git clone git://git.theobroma-systems.com/rk3399-cortex-m0.git => cd rk3399-cortex-m0 (export cross compiler path for Cortex-M0 PMU) => make CROSS_COMPILE=arm-cortex_m0-eabi- (export rk3399m0.bin) => export PMUM0=/path/to/rk3399-cortex-m0/rk3399m0.bin - Compile U-Boot => cd /path/to/u-boot => make orangepi-rk3399_defconfig => make (Get spl/u-boot-spl-dtb.bin, u-boot.itb images and some boards would get spl/u-boot-spl.bin since it doesn't enable CONFIG_SPL_OF_CONTROL If TPL enabled on the target, get tpl/u-boot-tpl-dtb.bin or tpl/u-boot-tpl.bin if CONFIG_TPL_OF_CONTROL not enabled) Writing to the board with USB ============================= For USB to work you must get your board into ROM boot mode, either by erasing your MMC or (perhaps) holding the recovery button when you boot the board. To erase your MMC, you can boot into Linux and type (as root) dd if=/dev/zero of=/dev/mmcblk0 bs=1M Connect your board's OTG port to your computer. To create a suitable image and write it to the board: ./firefly-rk3288/tools/mkimage -n rk3288 -T rkimage -d \ ./firefly-rk3288/spl/u-boot-spl-dtb.bin out && \ cat out | openssl rc4 -K 7c4e0304550509072d2c7b38170d1711 | rkflashtool l If all goes well you should something like: U-Boot SPL 2015.07-rc1-00383-ge345740-dirty (Jun 03 2015 - 10:06:49) Card did not respond to voltage select! spl: mmc init failed with error: -17 ### ERROR ### Please RESET the board ### You will need to reset the board before each time you try. Yes, that's all it does so far. If support for the Rockchip USB protocol or DFU were added in SPL then we could in principle load U-Boot and boot to a prompt from USB as several other platforms do. However it does not seem to be possible to use the existing boot ROM code from SPL. Writing to the eMMC with USB on ROC-RK3308-CC ============================================= For USB to work you must get your board into Bootrom mode, either by erasing the eMMC or short circuit the GND and D0 on core board. Connect the board to your computer via tyepc. => rkdeveloptool db rk3308_loader_v1.26.117.bin => rkdeveloptool wl 0x40 idbloader.img => rkdeveloptool wl 0x4000 u-boot.itb => rkdeveloptool rd Then you will see the boot log from Debug UART at baud rate 1500000: DDR Version V1.26 REGFB: 0x00000032, 0x00000032 In 589MHz DDR3 Col=10 Bank=8 Row=14 Size=256MB msch:1 Returning to boot ROM... U-Boot SPL 2020.01-rc1-00225-g34b681327f (Nov 14 2019 - 10:58:04 +0800) Trying to boot from MMC1 INFO: Preloader serial: 2 NOTICE: BL31: v1.3(release):30f1405 NOTICE: BL31: Built : 17:08:28, Sep 23 2019 INFO: Lastlog: last=0x100000, realtime=0x102000, size=0x2000 INFO: ARM GICv2 driver initialized INFO: Using opteed sec cpu_context! INFO: boot cpu mask: 1 INFO: plat_rockchip_pmu_init: pd status 0xe b INFO: BL31: Initializing runtime services WARNING: No OPTEE provided by BL2 boot loader, Booting device without OPTEE initialization. SMC`s destined for OPTEE will rK ERROR: Error initializing runtime service opteed_fast INFO: BL31: Preparing for EL3 exit to normal world INFO: Entry point address = 0x600000 INFO: SPSR = 0x3c9 U-Boot 2020.01-rc1-00225-g34b681327f (Nov 14 2019 - 10:58:47 +0800) Model: Firefly ROC-RK3308-CC board DRAM: 254 MiB MMC: dwmmc@ff480000: 0, dwmmc@ff490000: 1 rockchip_dnl_key_pressed read adc key val failed Net: No ethernet found. Hit any key to stop autoboot: 0 Card did not respond to voltage select! switch to partitions #0, OK mmc1(part 0) is current device Scanning mmc 1:4... Found /extlinux/extlinux.conf Retrieving file: /extlinux/extlinux.conf 151 bytes read in 3 ms (48.8 KiB/s) 1: kernel-mainline Retrieving file: /Image 14737920 bytes read in 377 ms (37.3 MiB/s) append: earlycon=uart8250,mmio32,0xff0c0000 console=ttyS2,1500000n8 Retrieving file: /rk3308-roc-cc.dtb 28954 bytes read in 4 ms (6.9 MiB/s) Flattened Device Tree blob at 01f00000 Booting using the fdt blob at 0x1f00000 ## Loading Device Tree to 000000000df3a000, end 000000000df44119 ... OK Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd042] [ 0.000000] Linux version 5.4.0-rc1-00040-g4dc2d508fa47-dirty (andy@B150) (gcc version 6.3.1 20170404 (Linaro GCC 6.3-209 [ 0.000000] Machine model: Firefly ROC-RK3308-CC board [ 0.000000] earlycon: uart8250 at MMIO32 0x00000000ff0c0000 (options '') [ 0.000000] printk: bootconsole [uart8250] enabled Booting from an SD card ======================= To write an image that boots from an SD card (assumed to be /dev/sdc): ./firefly-rk3288/tools/mkimage -n rk3288 -T rksd -d \ firefly-rk3288/spl/u-boot-spl-dtb.bin out && \ sudo dd if=out of=/dev/sdc seek=64 && \ sudo dd if=firefly-rk3288/u-boot-dtb.img of=/dev/sdc seek=16384 This puts the Rockchip header and SPL image first and then places the U-Boot image at block 16384 (i.e. 8MB from the start of the SD card). This corresponds with this setting in U-Boot: #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x4000 Put this SD (or micro-SD) card into your board and reset it. You should see something like: U-Boot 2016.01-rc2-00309-ge5bad3b-dirty (Jan 02 2016 - 23:41:59 -0700) Model: Radxa Rock 2 Square DRAM: 2 GiB MMC: dwmmc@ff0f0000: 0, dwmmc@ff0c0000: 1 *** Warning - bad CRC, using default environment In: serial Out: vop@ff940000.vidconsole Err: serial Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 0 => The rockchip bootrom can load and boot an initial spl, then continue to load a second-stage bootloader (ie. U-Boot) as soon as the control is returned to the bootrom. Both the RK3288 and the RK3036 use this special boot sequence. The configuration option enabling this is: CONFIG_SPL_ROCKCHIP_BACK_TO_BROM=y You can create the image via the following operations: ./firefly-rk3288/tools/mkimage -n rk3288 -T rksd -d \ firefly-rk3288/spl/u-boot-spl-dtb.bin out && \ cat firefly-rk3288/u-boot-dtb.bin >> out && \ sudo dd if=out of=/dev/sdc seek=64 Or: ./firefly-rk3288/tools/mkimage -n rk3288 -T rksd -d \ firefly-rk3288/spl/u-boot-spl-dtb.bin:firefly-rk3288/u-boot-dtb.bin \ out && \ sudo dd if=out of=/dev/sdc seek=64 If you have an HDMI cable attached you should see a video console. For evb_rk3036 board: ./evb-rk3036/tools/mkimage -n rk3036 -T rksd -d evb-rk3036/spl/u-boot-spl.bin out && \ cat evb-rk3036/u-boot-dtb.bin >> out && \ sudo dd if=out of=/dev/sdc seek=64 Or: ./evb-rk3036/tools/mkimage -n rk3036 -T rksd -d \ evb-rk3036/spl/u-boot-spl.bin:evb-rk3036/u-boot-dtb.bin out && \ sudo dd if=out of=/dev/sdc seek=64 Note: rk3036 SDMMC and debug uart use the same iomux, so if you boot from SD, the debug uart must be disabled Booting from an SD card on RK3288 with TPL ========================================== Since the size of SPL can't be exceeded 0x8000 bytes in RK3288, it is not possible add new SPL features like Falcon mode or etc. So introduce TPL so-that adding new features to SPL is possible because now TPL should run minimal with code like DDR, clock etc and rest of new features in SPL. As of now TPL is added on Vyasa-RK3288 board. To write an image that boots from an SD card (assumed to be /dev/mmcblk0): sudo dd if=idbloader.img of=/dev/mmcblk0 seek=64 && sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 seek=16384 Booting from an SD card on RK3188 ================================= For rk3188 boards the general storage onto the card stays the same as described above, but the image creation needs a bit more care. The bootrom of rk3188 expects to find a small 1kb loader which returns control to the bootrom, after which it will load the real loader, which can then be up to 29kb in size and does the regular ddr init. This is handled by a single image (built as the SPL stage) that tests whether it is handled for the first or second time via code executed from the boot0-hook. Additionally the rk3188 requires everything the bootrom loads to be rc4-encrypted. Except for the very first stage the bootrom always reads and decodes 2kb pages, so files should be sized accordingly. # copy tpl, pad to 1020 bytes and append spl tools/mkimage -n rk3188 -T rksd -d spl/u-boot-spl.bin out # truncate, encode and append u-boot.bin truncate -s %2048 u-boot.bin cat u-boot.bin | split -b 512 --filter='openssl rc4 -K 7C4E0304550509072D2C7B38170D1711' >> out Booting from an SD card on Pine64 Rock64 (RK3328) ================================================= For Rock64 rk3328 board the following three parts are required: TPL, SPL, and the u-boot image tree blob. - Write TPL/SPL image at 64 sector => sudo dd if=idbloader.img of=/dev/mmcblk0 seek=64 - Write u-boot image tree blob at 16384 sector => sudo dd if=u-boot.itb of=/dev/mmcblk0 seek=16384 Booting from an SD card on RK3399 ================================= To write an image that boots from an SD card (assumed to be /dev/sdc): Option 1: Package the image with Rockchip miniloader: - Create idbloader.img => cd /path/to/u-boot => ./tools/mkimage -n rk3399 -T rksd -d /path/to/rkbin/bin/rk33/rk3399_ddr_800MHz_v1.20.bin idbloader.img => cat /path/to/rkbin/bin/rk33/rk3399_miniloader_v1.19.bin >> idbloader.img - Write idbloader.img at 64 sector => sudo dd if=idbloader.img of=/dev/sdc seek=64 - Write trust.img at 24576 => sudo dd if=trust.img of=/dev/sdc seek=24576 - Write uboot.img at 16384 sector => sudo dd if=uboot.img of=/dev/sdc seek=16384 => sync Put this SD (or micro-SD) card into your board and reset it. You should see something like: DDR Version 1.20 20190314 In Channel 0: DDR3, 933MHz Bus Width=32 Col=10 Bank=8 Row=15 CS=1 Die Bus-Width=16 Size=1024MB no stride ch 0 ddrconfig = 0x101, ddrsize = 0x20 pmugrf_os_reg[2] = 0x10006281, stride = 0x17 OUT Boot1: 2019-03-14, version: 1.19 CPUId = 0x0 ChipType = 0x10, 239 mmc: ERROR: SDHCI ERR:cmd:0x102,stat:0x18000 mmc: ERROR: Card did not respond to voltage select! emmc reinit mmc: ERROR: SDHCI ERR:cmd:0x102,stat:0x18000 mmc: ERROR: Card did not respond to voltage select! emmc reinit mmc: ERROR: SDHCI ERR:cmd:0x102,stat:0x18000 mmc: ERROR: Card did not respond to voltage select! SdmmcInit=2 1 mmc0:cmd5,20 SdmmcInit=0 0 BootCapSize=0 UserCapSize=60543MB FwPartOffset=2000 , 0 StorageInit ok = 45266 SecureMode = 0 SecureInit read PBA: 0x4 SecureInit read PBA: 0x404 SecureInit read PBA: 0x804 SecureInit read PBA: 0xc04 SecureInit read PBA: 0x1004 SecureInit read PBA: 0x1404 SecureInit read PBA: 0x1804 SecureInit read PBA: 0x1c04 SecureInit ret = 0, SecureMode = 0 atags_set_bootdev: ret:(0) GPT 0x3380ec0 signature is wrong recovery gpt... GPT 0x3380ec0 signature is wrong recovery gpt fail! LoadTrust Addr:0x4000 No find bl30.bin Load uboot, ReadLba = 2000 hdr 0000000003380880 + 0x0:0x88,0x41,0x3e,0x97,0xe6,0x61,0x54,0x23,0xe9,0x5a,0xd1,0x2b,0xdc,0x2f,0xf9,0x35, Load OK, addr=0x200000, size=0x9c9c0 RunBL31 0x10000 NOTICE: BL31: v1.3(debug):370ab80 NOTICE: BL31: Built : 09:23:41, Mar 4 2019 NOTICE: BL31: Rockchip release version: v1.1 INFO: GICv3 with legacy support detected. ARM GICV3 driver initialized in EL3 INFO: Using opteed sec cpu_context! INFO: boot cpu mask: 0 INFO: plat_rockchip_pmu_init(1181): pd status 3e INFO: BL31: Initializing runtime services INFO: BL31: Initializing BL32 INF [0x0] TEE-CORE:init_primary_helper:337: Initializing (1.1.0-195-g8f090d20 #6 Fri Dec 7 06:11:20 UTC 2018 aarch64) INF [0x0] TEE-CORE:init_primary_helper:338: Release version: 1.2 INF [0x0] TEE-CORE:init_teecore:83: teecore inits done INFO: BL31: Preparing for EL3 exit to normal world INFO: Entry point address = 0x200000 INFO: SPSR = 0x3c9 U-Boot 2019.04-rc4-00136-gfd121f9641-dirty (Apr 16 2019 - 14:02:47 +0530) Model: FriendlyARM NanoPi NEO4 DRAM: 1022 MiB MMC: dwmmc@fe310000: 2, dwmmc@fe320000: 1, sdhci@fe330000: 0 Loading Environment from MMC... *** Warning - bad CRC, using default environment In: serial@ff1a0000 Out: serial@ff1a0000 Err: serial@ff1a0000 Model: FriendlyARM NanoPi NEO4 Net: eth0: ethernet@fe300000 Hit any key to stop autoboot: 0 => Option 2: Package the image with SPL: - Prefix rk3399 header to SPL image => cd /path/to/u-boot => ./tools/mkimage -n rk3399 -T rksd -d spl/u-boot-spl-dtb.bin out - Write prefixed SPL at 64th sector => sudo dd if=out of=/dev/sdc seek=64 - Write U-Boot proper at 16384 sector => sudo dd if=u-boot.itb of=/dev/sdc seek=16384 => sync Put this SD (or micro-SD) card into your board and reset it. You should see something like: U-Boot SPL board init Trying to boot from MMC1 U-Boot 2019.01-00004-g14db5ee998 (Mar 11 2019 - 13:18:41 +0530) Model: Orange Pi RK3399 Board DRAM: 2 GiB MMC: dwmmc@fe310000: 2, dwmmc@fe320000: 1, sdhci@fe330000: 0 Loading Environment from MMC... OK In: serial@ff1a0000 Out: serial@ff1a0000 Err: serial@ff1a0000 Model: Orange Pi RK3399 Board Net: eth0: ethernet@fe300000 Hit any key to stop autoboot: 0 => Option 3: Package the image with TPL: - Write tpl+spl at 64th sector => sudo dd if=idbloader.img of=/dev/sdc seek=64 - Write U-Boot proper at 16384 sector => sudo dd if=u-boot.itb of=/dev/sdc seek=16384 => sync Put this SD (or micro-SD) card into your board and reset it. You should see something like: U-Boot TPL board init Trying to boot from BOOTROM Returning to boot ROM... U-Boot SPL board init Trying to boot from MMC1 U-Boot 2019.07-rc1-00241-g5b3244767a (May 08 2019 - 10:51:06 +0530) Model: Orange Pi RK3399 Board DRAM: 2 GiB MMC: dwmmc@fe310000: 2, dwmmc@fe320000: 1, sdhci@fe330000: 0 Loading Environment from MMC... OK In: serial@ff1a0000 Out: serial@ff1a0000 Err: serial@ff1a0000 Model: Orange Pi RK3399 Board Net: eth0: ethernet@fe300000 Hit any key to stop autoboot: 0 => Using fastboot on rk3288 ======================== - Write GPT partition layout to mmc device which fastboot want to use it to store the image => gpt write mmc 1 $partitions - Invoke fastboot command to prepare => fastboot 1 - Start fastboot request on PC fastboot -i 0x2207 flash loader evb-rk3288/spl/u-boot-spl-dtb.bin You should see something like: => fastboot 1 WARNING: unknown variable: partition-type:loader Starting download of 357796 bytes .. downloading of 357796 bytes finished Flashing Raw Image ........ wrote 357888 bytes to 'loader' Booting from SPI ================ To write an image that boots from SPI flash (e.g. for the Haier Chromebook or Bob): ./chromebook_jerry/tools/mkimage -n rk3288 -T rkspi \ -d chromebook_jerry/spl/u-boot-spl-dtb.bin spl.bin && \ dd if=spl.bin of=spl-out.bin bs=128K conv=sync && \ cat spl-out.bin chromebook_jerry/u-boot-dtb.img >out.bin && \ dd if=out.bin of=out.bin.pad bs=4M conv=sync This converts the SPL image to the required SPI format by adding the Rockchip header and skipping every second 2KB block. Then the U-Boot image is written at offset 128KB and the whole image is padded to 4MB which is the SPI flash size. The position of U-Boot is controlled with this setting in U-Boot: #define CONFIG_SYS_SPI_U_BOOT_OFFS 0x20000 If you have a Dediprog em100pro connected then you can write the image with: sudo em100 -s -c GD25LQ32 -d out.bin.pad -r When booting you should see something like: U-Boot SPL 2015.07-rc2-00215-g9a58220-dirty (Jun 23 2015 - 12:11:32) U-Boot 2015.07-rc2-00215-g9a58220-dirty (Jun 23 2015 - 12:11:32 -0600) Model: Google Jerry DRAM: 2 GiB MMC: Using default environment In: serial@ff690000 Out: serial@ff690000 Err: serial@ff690000 => Future work =========== Immediate priorities are: - USB host - USB device - Run CPU at full speed (code exists but we only see ~60 DMIPS maximum) - NAND flash - Boot U-Boot proper over USB OTG (at present only SPL works) Development Notes ================= There are plenty of patches in the links below to help with this work. [1] https://github.com/rkchrome/uboot.git [2] https://github.com/linux-rockchip/u-boot-rockchip.git branch u-boot-rk3288 [3] https://github.com/linux-rockchip/rkflashtool.git [4] http://wiki.t-firefly.com/index.php/Firefly-RK3288/Serial_debug/en rkimage ------- rkimage.c produces an SPL image suitable for sending directly to the boot ROM over USB OTG. This is a very simple format - just the string RK32 (as 4 bytes) followed by u-boot-spl-dtb.bin. The boot ROM loads image to 0xff704000 which is in the internal SRAM. The SRAM starts at 0xff700000 and extends to 0xff718000 where we put the stack. rksd ---- rksd.c produces an image consisting of 32KB of empty space, a header and u-boot-spl-dtb.bin. The header is defined by 'struct header0_info' although most of the fields are unused by U-Boot. We just need to specify the signature, a flag and the block offset and size of the SPL image. The header occupies a single block but we pad it out to 4 blocks. The header is encoding using RC4 with the key 7c4e0304550509072d2c7b38170d1711. The SPL image can be encoded too but we don't do that. The maximum size of u-boot-spl-dtb.bin which the boot ROM will read is 32KB, or 0x40 blocks. This is a severe and annoying limitation. There may be a way around this limitation, since there is plenty of SRAM, but at present the board refuses to boot if this limit is exceeded. The image produced is padded up to a block boundary (512 bytes). It should be written to the start of an SD card using dd. Since this image is set to load U-Boot from the SD card at block offset, CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, dd should be used to write u-boot-dtb.img to the SD card at that offset. See above for instructions. rkspi ----- rkspi.c produces an image consisting of a header and u-boot-spl-dtb.bin. The resulting image is then spread out so that only the first 2KB of each 4KB sector is used. The header is the same as with rksd and the maximum size is also 32KB (before spreading). The image should be written to the start of SPI flash. See above for instructions on how to write a SPI image. rkmux.py -------- You can use this script to create #defines for SoC register access. See the script for usage. Device tree and driver model ---------------------------- Where possible driver model is used to provide a structure to the functionality. Device tree is used for configuration. However these have an overhead and in SPL with a 32KB size limit some shortcuts have been taken. In general all Rockchip drivers should use these features, with SPL-specific modifications where required. GPT partition layout ---------------------------- Rockchip use a unified GPT partition layout in open source support. With this GPT partition layout, uboot can be compatilbe with other components, like miniloader, trusted-os, arm-trust-firmware. There are some documents about partitions in the links below. http://rockchip.wikidot.com/partitions -- Jagan Teki 27 Mar 2019 Simon Glass 24 June 2015