Renesas RZ/G2H User guide

R01US0555EJ0100 Rev.1.00 Page
1
of 13
Mar. 31, 2022
Reference Boards of
RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E
Start-up Guide
Introduction
This document provides a guide to prepare RZ/G2 reference boards to boot up with the Verified Linux Package v3.0.x.
Especially, procedures to write bootloader to each board are explained.
Bootloaders are written to the Flash ROM on the board using the Flash Writer or the Mini Monitor provided by
Renesas. This document explains the way to write these files using the Flash Writer.
Target
RZ/G2 Group reference boards
•Hoperun Technology HiHope RZ/G2H platform (hihope-rzg2h)
•Hoperun Technology HiHope RZ/G2M platform (hihope-rzg2m)
•Hoperun Technology HiHope RZ/G2N platform (hihope-rzg2n)
•Silicon Linux RZ/G2E evaluation kit (EK874)
Verified Linux Package version 3.0.x
Note) RZ/G2L, RZ/G2LC, and RZ/G2UL are not the target boards in this document.
R01US0555EJ0100
Rev.1.00
Mar. 31, 2022

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
2
of 13
Mar. 31, 2022
Contents
Preparing Flash Writer ..........................................................................................................3
1.1 Preparing cross compiler...........................................................................................................3
1.2 Building Flash Writer..................................................................................................................3
1. Hoperun Technology HiHope RZ/G2[HMN] platform (hihope-rzg2h, hihope-rzg2m,
hihope-rzg2n)..................................................................................................................4
1.1 Preparation ..................................................................................................................................4
1.1.1 Building files to write............................................................................................................4
1.1.2 Settings..................................................................................................................................4
1.2 Booting Flash Writer...................................................................................................................5
1.3 Writing Bootloader......................................................................................................................6
1.4 Setting U-boot..............................................................................................................................7
2. Silicon Linux RZ/G2E evaluation kit (EK874)................................................................9
2.1 Preparation ..................................................................................................................................9
2.1.1 Building files to write............................................................................................................9
2.1.2 Settings..................................................................................................................................9
2.2 Booting Flash Writer...................................................................................................................9
2.3 Writing Bootloader....................................................................................................................10
2.4 Setting U-boot............................................................................................................................10
Revision History ....................................................................................................................1

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
3
of 13
Mar. 31, 2022
Preparing Flash Writer
Flash Writer is built automatically when building BSP by bitbake command. Please refer to the Release Note of the
Verified Linux Package to obtain a binary file of Flash Writer.
If you need latest one, please get source code from the GitHub repository and build it according to the following
instructions. In general, new revision of reference boards requires latest Flash Writer.
1.1 Preparing cross compiler
FlashWriter runs on target boards. Please get cross compiler built by Linaro or setup a Yocto SDK.
Linaro toolchain:
$ cd ~/
$ wget https://releases.linaro.org/components/toolchain/binaries/7.3-2018.05/a
arch64-elf/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf.tar.xz
$ tar xvf gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf.tar.xz
Yocto SDK:
Build an SDK according to Release Notes and install it to a Linux Host PC. Then, enable the SDK as below.
$ source /opt/poky/3.1.14/environment-setup-aarch64-poky-linux
1.2 Building Flash Writer
Get source codes of Flash Writer from the GitHub repository and checkout the latest tag.
cd ~/
git clone https://github.com/renesas-rz/rzg2_flash_writer.git
cd rzg2_flash_writer
git checkout -b tmp 6606c4f4351f56fb3bd84d7836c01c8932a4f884
Build Flash Writer as an s-record file by the following commands. Please specify a target board by “BOARD”option.
Linaro toolchain:
$ make -f makefile.linaro clean
$ CROSS_COMPILE=~/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/aarch64-elf-
make -f makefile.linaro BOARD=<board>
Yocto SDK:
$ make clean
$ make BOARD=<board>
Please replace <board> to a proper option according to this table.
Target board
BOARD option
<board>
Image to be generated
HiHope RZ/G2H
HIHOPE
AArch64_Flash_writer_SCIF_DUMMY_CERT_E6300400_hihope.mot
HiHope RZ/G2M
HiHope RZ/G2N
EK874
EK874
AArch64_Flash_writer_SCIF_DUMMY_CERT_E6300400_ek874.mot

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
4
of 13
Mar. 31, 2022
1. Hoperun Technology HiHope RZ/G2[HMN] platform (hihope-rzg2h, hihope-
rzg2m, hihope-rzg2n)
1.1 Preparation
1.1.1 Building files to write
This board uses the files below as a bootloader. Please build them according to the Release Note and copy these files to
the PC which runs a serial terminal software.
•bootparam_sa0.srec
•bl2-hihope-rzg2h.srec (RZ/G2H) or bl2-hihope-rzg2m.srec (RZ/G2M) or bl2-hihope-rzg2n.srec (RZ/G2N)
•cert_header_sa6.srec
•bl31-hihope-rzg2h.srec (RZ/G2H) or bl31-hihope-rzg2m.srec (RZ/G2M) or bl31-hihope-rzg2n.srec (RZ/G2N)
•u-boot-elf-hihope-rzg2h.srec (RZ/G2H) or u-boot-elf-hihope-rzg2m.srec (RZ/G2M) or u-boot-elf-hihope-
rzg2n.srec (RZ/G2N)
1.1.2 Settings
Connect between the board and a control PC by USB serial cable according to the Release Note.
Set the settings about serial communication protocol on a terminal software as below:
•Speed: 115200 bps
•Data: 8bit
•Parity: None
•Stop bit: 1bit
•Flow control: None
To set the board to SCIF Download mode, set the SW1002 as below:
SW1002
8
7
6
5
4
3
2
1
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Note) Be careful not to change the SW1001 and SW1003

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
5
of 13
Mar. 31, 2022
1.2 Booting Flash Writer
Turn on the power of the board by changing the SW2402. Messages below are shown on the terminal.
SCIF Download mode (w/o verification)
(C) Renesas Electronics Corp.
-- Load Program to SystemRAM ---------------
please send !
Send an image of Flash Writer (AArch64_Flash_writer_SCIF_DUMMY_CERT_E6300400_hihope.mot) using terminal
software after the message “please send !” is shown.
Below is a sample procedure with Tera Term.
Open a “Send file” dialog by selecting “File” → “Sendfile” menu.
Then, select the image to be send and click “Open” button.

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
6
of 13
Mar. 31, 2022
The image will be sent to the board via serial connection.
After successfully download the binary, Flash Writer starts automatically and show a message like below on the
terminal.
Flash writer for RZ/G2M V1.00 Sep.24,2019
>
1.3 Writing Bootloader
“xls2” command of Flash Writer is used to write binary files. This command receives binary data from the serial port
and write the data to specified address of the Flash ROM with information where the data should be loaded on the
address of the main memory.
This is an example of writing “bootparam_sa0.srec” which should be placed to E6320000h of the main memory to
000000h of the Flash ROM.
>xls2
===== Qspi writing of RZ/G2 Board Command =============
Load Program to Spiflash
Writes to any of SPI address.
Winbond : W25M512JW
Program Top Address & Qspi Save Address
===== Please Input Program Top Address ============
Please Input : H'E6320000
===== Please Input Qspi Save Address ===

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
7
of 13
Mar. 31, 2022
Please Input : H'000000
Work RAM(H'50000000-H'53FFFFFF) Clear....
please send ! ('.' & CR stop load)
Send the data of “bootparam_sa0.srec” from terminal software after the message “please send !” is shown.
After successfully download the binary, messages like below are shown on the terminal.
SPI Data Clear(H'FF) Check :H'00000000-H'00007FFF Erasing.
........Erase Completed
SAVE SPI-FLASH.......
======= Qspi Save Information =================
SpiFlashMemory Stat Address : H'00000000
SpiFlashMemory End Address : H'00000E67
===========================================================
SPI Data Clear(H'FF) Check : H'00000000-0000FFFF,Clear OK?(y/n)
In case a message to prompt to clear data like above, please enter “y”.
Write all necessary files using the addresses listed at Table 1 and turn off the power of the board by changing the
SW2402.
Table 1. Addresses for each file
File name
Address to load to RAM
Address to save to ROM
bootparam_sa0.srec
E6320000
000000
bl2-hihope-rzg2h.srec or
bl2-hihope-rzg2m.srec or
bl2-hihope-rzg2n.srec
E6304000
040000
cert_header_sa6.srec
E6320000
180000
bl31-hihope-rzg2h.srec or
bl31-hihope-rzg2m.srec or
bl31-hihope-rzg2n.srec
44000000
1C0000
tee-hihope-rzg2h.srec or
tee-hihope-rzg2m.srec or
tee-hihope-rzg2n.srec
44100000
200000
u-boot-elf-hihope-rzg2m.srec or
u-boot-elf-hihope-rzg2n.srec
50000000
300000
1.4 Setting U-boot
To set the board to SPI Boot mode, set the SW1002 as below:

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
8
of 13
Mar. 31, 2022
SW1002
8
7
6
5
4
3
2
1
ON
ON
OFF
ON
ON
ON
ON
ON
Note) Be careful not to change the SW1001 and SW1003
Turn on the power of the board by changing the SW2402.
U-Boot 2020.10 (May 07 2021 - 13:48:35 +0000)
CPU: Renesas Electronics R8A774A1 rev 1.1/rev 1.2
Model: Hoperun Technology HiHope RZ/G2M platform (hihope-rzg2m)
DRAM: 3.9 GiB
Bank #0: 0x048000000 - 0x0bfffffff, 1.9 GiB
Bank #1: 0x600000000 - 0x67fffffff, 2 GiB
MMC: sd@ee100000: 0, sd@ee160000: 1
Loading Environment from SPI Flash... SF: Detected w25m512jw with page size 25
6 Bytes, erase size 4 KiB, total 32 MiB
*** Warning - bad CRC, using default environment
Following the messages above, many warning messages will be shown. These warnings are eliminated by setting
correct environment variables. Please set default value and save them to the Flash ROM.
=> env default -a
## Resetting to default environment
=> saveenv
Saving Environment to SPI Flash... SF: Detected w25m512jv with page size 256 B
ytes, erase size 4 KiB, total 32 MiB
Erasing SPI flash...Writing to SPI flash...done
OK
In case booting from micro SD card, set environment variables using the commands below:
=> setenv bootargs 'root=/dev/mmcblk0p2 rootwait'
=> setenv bootcmd 'fatload mmc 0:1 0x48080000 Image-hihope-rzg2m.bin; fatload
mmc 0:1 0x48000000 r8a774a1-hihope-rzg2m.dtb; booti 0x48080000 - 0x48000000'
=> saveenv
Saving Environment to SPI Flash... SF: Detected w25m512jv with page size 256 B
ytes, erase size 4 KiB, total 32 MiB
Erasing SPI flash...Writing to SPI flash...done
OK
Note) The setting above assumes the SD card has two partitions and stores data as below:
First partition: formatted as FAT, includes Image-hihope-rzg2m.bin and r8a774a1-hihope-rzg2m.dtb
Second partition: formatted as ext4, rootfs image is expanded
Note) Please replace the file names in “bootcmd” according to the Release Note.
Now the board can bootup normally. Please turn off and on the power again to boot up the board.

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
9
of 13
Mar. 31, 2022
2. Silicon Linux RZ/G2E evaluation kit (EK874)
2.1 Preparation
2.1.1 Building files to write
This board uses the files below as a bootloader. Please build them according to the Release Note and copy these files to
the PC which runs a serial terminal software.
•bootparam_sa0.srec
•bl2-ek874.srec
•cert_header_sa6.srec
•bl31-ek874.srec
•u-boot-elf-ek874.srec
2.1.2 Settings
Connect between the board and a control PC by USB serial cable according to the Release Note.
Set the settings about serial communication protocol on a terminal software as below:
•Speed: 115200 bps
•Data: 8bit
•Parity: None
•Stop bit: 1bit
•Flow control: None
To set the board to SCIF Download mode, set the SW12 which is placed near the micro SD card slot as below:
6
5
4
3
2
1
ON
ON
OFF
OFF
OFF
OFF
2.2 Booting Flash Writer
Turn on the power of the board by changing the SW23. Messages below are shown on the terminal.
SCIF Download mode (w/o verification)
(C) Renesas Electronics Corp.
-- Load Program to SystemRAM ---------------
please send !
Send an image of Flash Writer (AArch64_Flash_writer_SCIF_DUMMY_CERT_E6300400_ek874.mot) from terminal
software after the message “please send !” is shown.
For detail of the procedure, please refer to the section 0

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
10
of 13
Mar. 31, 2022
Booting Flash Writer.

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
11
of 13
Mar. 31, 2022
After successfully download the binary, Flash Writer starts automatically and shows a message like below on the
terminal.
Flash writer for RZ/G2E V1.00 Sep.24,2019
>
2.3 Writing Bootloader
“XLS2” command of Flash Writer is used to write binary files. This command receives binary data from the serial port
and write the data to specified address of the Flash ROM with information where the data should be loaded on the
address of the main memory.
For detail of the procedure, please refer to the section 1.3 Writing Bootloader.
Write all necessary files using the addresses listed at Table 2 and turn off the power of the board by changing the SW23.
Table 2. Addresses for each file
File name
Address to load to RAM
Address to save to ROM
bootparam_sa0.srec
E6320000
000000
bl2-ek874.srec
E6304000
040000
cert_header_sa6.srec
E6320000
180000
bl31-ek874.srec
44000000
1C0000
tee-ek874-rzg2e.srec
44100000
200000
u-boot-elf-ek874.srec
50000000
300000
2.4 Setting U-boot
To set the board to SPI Boot mode, set the SW12 which is placed near the micro SD card slot as below:
6
5
4
3
2
1
ON
ON
OFF
ON
ON
ON
Turn on the power of the board by changing the SW23.
U-Boot 2020.10 (May 07 2021 - 13:48:35 +0000)
CPU: Renesas Electronics R8A7794C0 rev 1.1
Model: Silicon Linux CAT874 RZ/G2E board
DRAM: 1.9 GiB
Bank #0: 0x048000000 - 0x0bfffffff, 1.9 GiB
MMC: sd@ee100000: 0
Loading Environment from SPI Flash... SF: Detected w25m512jv with page size 25
6 Bytes, erase size 4 KiB, total 32 MiB
Following the messages above, many warning messages will be shown. These warnings are eliminated by setting
correct environment variables. Please set default value and save them to the Flash ROM.

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
12
of 13
Mar. 31, 2022
=> env default -a
## Resetting to default environment
=> saveenv
Saving Environment to SPI Flash... SF: Detected w25m512jv with page size 256 B
ytes, erase size 4 KiB, total 32 MiB
Erasing SPI flash...Writing to SPI flash...done
OK
In case booting from micro SD card, set environment variables using the commands below:
=> setenv bootargs 'root=/dev/mmcblk0p2 rootwait'
=> setenv bootcmd 'fatload mmc 0:1 0x48080000 Image-ek874.bin; fatload mmc 0:1
0x48000000 r8a774c0-ek874.dtb; booti 0x48080000 - 0x48000000'
=> saveenv
Saving Environment to SPI Flash... SF: Detected w25m512jv with page size 256 B
ytes, erase size 4 KiB, total 32 MiB
Erasing SPI flash...Writing to SPI flash...done
OK
Note) The setting above assumes the SD card has two partitions and stores data as below:
First partition: formatted as FAT, includes Image-ek874.bin and r8a774c0-ek874.dtb
Second partition: formatted as ext4, rootfs image is expanded
Now the board can bootup normally. Please turn off and on the power again to boot up the board.

Reference Boards of RZ/G2H, RZ/G2M, RZ/G2N, and RZ/G2E Start-up Guide
R01US0555EJ0100 Rev.1.00 Page
13
of 13
Mar. 31, 2022
Website and Support
Renesas Electronics Website
http://www.renesas.com/
Inquiries
http://www.renesas.com/contact/
All trademarks and registered trademarks are the property of their respective owners.

Revision History
Rev.
Date
Description
Page
Summary
1.00
Mar. 31, 2022
−
First edition issued.