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首先恭喜你參考‘使用指南-上’方法，已經成功燒寫flash_writer到G2L的片上RAM。接下來將介紹如何將bootloader和U-boot燒寫到QSPI或EMMC，以及如何制作SD卡鏡像并啟動系統。

G2L開發板提供了64MB的QSPI NOR FALSH 和64GB的EMMC Memory資源，可以選擇其中其一設為啟動空間。

接下來從上篇這里繼續我們的操作

方式1.下載到QSPI NOR FLASH

Flash_writer 已經提供“XLS2”指令，支持把二進制文件燒寫到FLASH ROM.

步驟1

燒寫 bl2_bp-smarc-rzg2l_pmic.srec

串口輸入‘XLS2’根據提示，輸入對應地址：

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>XLS2 
===== Qspi writing of RZ/G2 Board Command ============= 
Load Program to Spiflash 
Writes to any of SPI address. 
Micron : MT25QU512 
Program Top Address & Qspi Save Address 
===== Please Input Program Top Address ============ 
Please Input : H'11E00 
===== Please Input Qspi Save Address === 
Please Input : H'00000 
Work RAM(H'50000000-H'53FFFFFF) Clear.... 
please send ! ('.' & CR stop load)

選擇"bl2_bp-smarc-rzg2l_pmic.srec"文件，出現如下信息提供，輸入’y’

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SPI Data Clear(H'FF) Check : H'00000000-0000FFFF,Clear OK?(y/n)

出現以下信息，表示燒寫成功

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SPI Data Clear(H'FF) Check :H'00000000-0000FFFF Erasing..Erase Completed 
SAVE SPI-FLASH....... 
======= Qspi Save Information ================= 
SpiFlashMemory Stat Address : H'00000000 
SpiFlashMemory End Address : H'0000CB28
===========================================================

步驟2

燒寫fip-smarc-rzg2l_pmic.srec

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>XLS2 
===== Qspi writing of RZ/G2 Board Command ============= 
Load Program to Spiflash 
Writes to any of SPI address. 
Micron : MT25QU512 
Program Top Address & Qspi Save Address 
===== Please Input Program Top Address ============ 
Please Input : H'00000 
===== Please Input Qspi Save Address === 
Please Input : H'1D200 
Work RAM(H'50000000-H'53FFFFFF) Clear.... 
please send ! ('.' & CR stop load)

選擇 fip-smarc-rzg2l_pmic.srec文件，輸入y

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SPI Data Clear(H'FF) Check : H'00000000-0000FFFF,Clear OK?(y/n)

出現以下信息，表示燒寫成功。

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SPI Data Clear(H'FF) Check :H'00000000-0000FFFF Erasing..Erase Completed 
SAVE SPI-FLASH....... 
======= Qspi Save Information ================= 
SpiFlashMemory Stat Address : H'00000000 
SpiFlashMemory End Address : H'0000CB28
===========================================================

至此，bootloader和U-boot已成功燒寫到QSPI FLASH。

方式2. 下載到EMMC MEMORY

Flash_writer 已經提供“EXT_CSD、 EM_W”指令，支持把二進制文件燒寫到EMMC.

步驟1

燒寫 bl2_bp-smarc-rzg2l_pmic.srec

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>EM_SECSD 
Please Input EXT_CSD Index(H'00 - H'1FF) :b1 
EXT_CSD[B1] = 0x00 
Please Input Value(H'00 - H'FF) :2 
EXT_CSD[B1] = 0x02 
>EM_SECSD 
Please Input EXT_CSD Index(H'00 - H'1FF) :b3 
EXT_CSD[B3] = 0x00 
Please Input Value(H'00 - H'FF) :8 
EXT_CSD[B3] = 0x08 

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>EM_W 
EM_W Start -------------- 
--------------------------------------------------------- 
Please select,eMMC Partition Area. 
0:User Partition Area : 62160896 KBytes 
eMMC Sector Cnt : H'0 - H'0768FFFF 
1:Boot Partition 1 : 32256 KBytes 
eMMC Sector Cnt : H'0 - H'0000FBFF 
2:Boot Partition 2 : 32256 KBytes 
eMMC Sector Cnt : H'0 - H'0000FBFF 
--------------------------------------------------------- 
Select area(0-2)>1 
-- Boot Partition 1 Program ----------------------------- 
Please Input Start Address in sector :1 
Please Input Program Start Address : 11e00 
Work RAM(H'50000000-H'50FFFFFF) Clear.... 
please send ! ('.' & CR stop load)

選擇bl2_bp-smarc-rzv2l_pmic.srec

出現以下信息，表示燒寫成功

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SAVE -FLASH.......
EM_W Complete!

步驟2

燒寫fip-smarc-rzg2l_pmic.srec

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> EM_W 
EM_W Start -------------- 
--------------------------------------------------------- 
Please select,eMMC Partition Area. 
0:User Partition Area : 62160896 KBytes 
eMMC Sector Cnt : H'0 - H'0768FFFF 
1:Boot Partition 1 : 32256 KBytes 
eMMC Sector Cnt : H'0 - H'0000FBFF 
2:Boot Partition 2 : 32256 KBytes 
eMMC Sector Cnt : H'0 - H'0000FBFF 
--------------------------------------------------------- 
Select area(0-2)>1 
-- Boot Partition 1 Program ----------------------------- 
Please Input Start Address in sector :100 
Please Input Program Start Address : 0 
Work RAM(H'50000000-H'50FFFFFF) Clear.... 
please send ! ('.' & CR stop load) 

選擇 fip-smarc-rzg2l_pmic.srec文件

出現以下信息，表示燒寫成功。

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SAVE -FLASH.......
EM_W Complete!

至此，bootloader和U-boot已成功燒寫到EMMC。長按SW9 按鍵關機。

制作SD文件系統

可以在windows電腦上通過工具制作，如https://rufus.ie/en/

如下選擇對應的SD卡和鏡像文件，開始制作，等一段時間制作完成。

最后如下安裝SD卡到開發板，SW11選擇QSPI引導模式

長按SW9開機，3秒事件內按下電腦任意按鍵，進入如下界面：

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U-Boot 2021.10 (Mar 31 2022 - 03:57:20 +0000) 
CPU: Renesas Electronics K rev 14.15 
Model: smarc-rzg2l 
DRAM: 1.9 GiB 
MMC: sd@11c00000: 0, sd@11c10000: 1 
Loading Environment from MMC... OK 
In: serial@1004b800 
Out: serial@1004b800 
Err: serial@1004b800 
Net: eth0: ethernet@11c20000 
Hit any key to stop autoboot: 0 
=>
設置環境變量：
=> env default -a 
## Resetting to default environment 
=> setenv bootargs 'root=/dev/mmcblk1p2 rootwait' 
=> setenv bootcmd 'mmc dev 1;fatload mmc 1:1 0x48080000 Image-smarc-rzg2l.bin; fatload mmc 1:1 0x48000000 Image-r9a07g044l2-smarc.dtb; booti 0x48080000 - 0x48000000' 
=> saveenv 
Saving Environment to MMC... Writing to MMC(0)….OK
輸入boot啟動系統
=> boot

到下面界面，輸入Root賬戶登錄，至此，系統已成功啟動，開啟G2L的世界之旅吧！

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Version: 3.0.3 
smarc-rzg2l login: root 
Last login: Sun Sep 20 10:44:03 UTC 2020
root@smarc-rzg2l:~#
root@smarc-rzg2l:~# uname -r
5.10.158-cip22-yocto-standard

后續文章會介紹EMMC文件系統制作、開發環境創建、如何編譯相關鏡像和文件系統。

審核編輯：湯梓紅