README.rockchip 21.7 KB
Newer Older
1
# SPDX-License-Identifier: GPL-2.0+
Simon Glass's avatar
Simon Glass committed
2 3 4 5 6 7 8
#
# Copyright (C) 2015 Google. Inc
# Written by Simon Glass <sjg@chromium.org>

U-Boot on Rockchip
==================

9
A wide range of Rockchip SoCs are supported in mainline U-Boot
Simon Glass's avatar
Simon Glass committed
10

11 12 13 14
Warning
=======
This document is being moved to doc/board/rockchip, so information on it
might be incomplete or outdated.
Simon Glass's avatar
Simon Glass committed
15 16 17 18 19 20

Prerequisites
=============

You will need:

Simon Glass's avatar
Simon Glass committed
21
   - Firefly RK3288 board or something else with a supported RockChip SoC
Simon Glass's avatar
Simon Glass committed
22 23 24 25 26 27 28 29 30 31 32 33
   - 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
========

34 35
1. To build RK3288 board:

Simon Glass's avatar
Simon Glass committed
36 37
   CROSS_COMPILE=arm-linux-gnueabi- make O=firefly firefly-rk3288_defconfig all

38 39
    (or you can use another cross compiler if you prefer)

40 41 42 43 44 45 46
2. To build RK3308 board:
   - Get the rkbin
     => git clone https://github.com/rockchip-linux/rkbin.git

   - Compile U-Boot
     => cd /path/to/u-boot
     => export BL31=/path/to/rkbin/bin/rk33/rk3308_bl31_v2.22.elf
47
     => make roc-cc-rk3308_defconfig
48 49 50 51 52
     => make CROSS_COMPILE=aarch64-linux-gnu- all
     => ./tools/mkimage -n rk3308 -T rksd -d /path/to/rkbin/bin/rk33/rk3308_ddr_589MHz_uart2_m0_v1.26.bin idbloader.img
     => cat spl/u-boot-spl.bin  >> idbloader.img

3. To build RK3399 board:
53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89

   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

     For Puma board.

	=> git clone git://git.theobroma-systems.com/arm-trusted-firmware.git
	=> cd arm-trusted-firmware
	=> make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3399 bl31

90 91
	(export bl31.bin)
	=> export BL31=/path/to/arm-trusted-firmware/build/rk3399/release/bl31/bl31.bin
92 93 94 95 96 97 98 99 100 101

     For rest of rk3399 boards.

	=> 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

102 103
	(export bl31.elf)
	=> export BL31=/path/to/arm-trusted-firmware/build/rk3399/release/bl31/bl31.elf
104 105 106 107 108 109 110

   - Compile PMU M0 firmware

     This is optional for most of the rk3399 boards and required only for Puma board.

     => git clone git://git.theobroma-systems.com/rk3399-cortex-m0.git
     => cd rk3399-cortex-m0
Simon Glass's avatar
Simon Glass committed
111

112 113 114
     (export cross compiler path for Cortex-M0 PMU)
     => make CROSS_COMPILE=arm-cortex_m0-eabi-

115 116
     (export rk3399m0.bin)
     => export PMUM0=/path/to/rk3399-cortex-m0/rk3399m0.bin
117 118 119 120 121 122 123 124

   - 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
125 126 127 128
      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)
Simon Glass's avatar
Simon Glass committed
129 130 131 132 133 134 135 136 137 138 139 140 141 142

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:

Jeffy Chen's avatar
Jeffy Chen committed
143
   ./firefly-rk3288/tools/mkimage -n rk3288 -T rkimage -d \
144
	./firefly-rk3288/spl/u-boot-spl-dtb.bin out && \
Simon Glass's avatar
Simon Glass committed
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
   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.


161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232
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

Simon Glass's avatar
Simon Glass committed
233 234 235 236 237
Booting from an SD card
=======================

To write an image that boots from an SD card (assumed to be /dev/sdc):

Jeffy Chen's avatar
Jeffy Chen committed
238
   ./firefly-rk3288/tools/mkimage -n rk3288 -T rksd -d \
239 240
	firefly-rk3288/spl/u-boot-spl-dtb.bin out && \
   sudo dd if=out of=/dev/sdc seek=64 && \
241
   sudo dd if=firefly-rk3288/u-boot-dtb.img of=/dev/sdc seek=16384
Simon Glass's avatar
Simon Glass committed
242 243

This puts the Rockchip header and SPL image first and then places the U-Boot
244
image at block 16384 (i.e. 8MB from the start of the SD card). This
Simon Glass's avatar
Simon Glass committed
245 246
corresponds with this setting in U-Boot:

247
   #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR	0x4000
Simon Glass's avatar
Simon Glass committed
248 249 250 251

Put this SD (or micro-SD) card into your board and reset it. You should see
something like:

Simon Glass's avatar
Simon Glass committed
252
   U-Boot 2016.01-rc2-00309-ge5bad3b-dirty (Jan 02 2016 - 23:41:59 -0700)
Simon Glass's avatar
Simon Glass committed
253

Simon Glass's avatar
Simon Glass committed
254
   Model: Radxa Rock 2 Square
Simon Glass's avatar
Simon Glass committed
255
   DRAM:  2 GiB
Simon Glass's avatar
Simon Glass committed
256 257 258 259 260 261 262 263 264
   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
Simon Glass's avatar
Simon Glass committed
265 266
   =>

267
The rockchip bootrom can load and boot an initial spl, then continue to
268 269 270
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:
271

272
	CONFIG_SPL_ROCKCHIP_BACK_TO_BROM=y
273 274 275 276 277 278 279 280

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

281 282 283 284 285 286
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

Simon Glass's avatar
Simon Glass committed
287 288
If you have an HDMI cable attached you should see a video console.

289
For evb_rk3036 board:
Jeffy Chen's avatar
Jeffy Chen committed
290
	./evb-rk3036/tools/mkimage -n rk3036 -T rksd  -d evb-rk3036/spl/u-boot-spl.bin out && \
291 292 293
	cat evb-rk3036/u-boot-dtb.bin >> out && \
	sudo dd if=out of=/dev/sdc seek=64

294 295 296 297 298
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

299 300
Note: rk3036 SDMMC and debug uart use the same iomux, so if you boot from SD, the
      debug uart must be disabled
Simon Glass's avatar
Simon Glass committed
301

302

Jagan Teki's avatar
Jagan Teki committed
303 304 305 306 307 308 309 310 311 312 313 314 315
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):

316
    sudo dd if=idbloader.img of=/dev/mmcblk0 seek=64 &&
317
    sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 seek=16384
Jagan Teki's avatar
Jagan Teki committed
318

319 320 321 322 323 324 325 326
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
327 328 329 330
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.
331 332 333 334 335 336

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
337
tools/mkimage -n rk3188 -T rksd -d spl/u-boot-spl.bin out
338 339 340 341 342

# 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

343 344 345 346
Booting from an SD card on Pine64 Rock64 (RK3328)
=================================================

For Rock64 rk3328 board the following three parts are required:
347
TPL, SPL, and the u-boot image tree blob.
348 349 350 351 352 353 354 355 356

  - 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

357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503
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
=>
504

505 506 507 508
Option 3: Package the image with TPL:

  - Write tpl+spl at 64th sector

509
    => sudo dd if=idbloader.img of=/dev/sdc seek=64
510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540

  - 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
=>

Xu Ziyuan's avatar
Xu Ziyuan committed
541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565
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'

Simon Glass's avatar
Simon Glass committed
566 567 568
Booting from SPI
================

569 570
To write an image that boots from SPI flash (e.g. for the Haier Chromebook or
Bob):
Simon Glass's avatar
Simon Glass committed
571

572 573 574 575
   ./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 && \
Simon Glass's avatar
Simon Glass committed
576 577 578
   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
579
header and skipping every second 2KB block. Then the U-Boot image is written at
Simon Glass's avatar
Simon Glass committed
580 581 582
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:

583
   #define CONFIG_SYS_SPI_U_BOOT_OFFS	0x20000
Simon Glass's avatar
Simon Glass committed
584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612

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
Simon Glass's avatar
Simon Glass committed
613
- Run CPU at full speed (code exists but we only see ~60 DMIPS maximum)
Simon Glass's avatar
Simon Glass committed
614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672
- 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.

673 674 675 676 677 678
rkmux.py
--------

You can use this script to create #defines for SoC register access. See the
script for usage.

Simon Glass's avatar
Simon Glass committed
679 680 681 682 683 684 685 686 687 688

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.

689 690 691 692 693 694 695 696 697
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
Simon Glass's avatar
Simon Glass committed
698 699

--
700 701
Jagan Teki <jagan@amarulasolutions.com>
27 Mar 2019
Simon Glass's avatar
Simon Glass committed
702 703
Simon Glass <sjg@chromium.org>
24 June 2015