RZ/G2L开发板EMMC启动

瑞萨MCU小百科 2023-10-30 12:01

入门级示波器多少钱合适？ 您在使用示波器时面临的最大挑战是什么？

之前文章介绍了如何下载并从SD卡加载文件系统，提到过可以从EMMC引导系统，本篇将为您介绍如何把文件系统烧到EMMC，并从EMMC加载。

接之前操作，系统已经从SD卡正常启动（本文方案需要借助SD卡）：

Version: 3.0.3
smarc-rzg2l login: root
Last login: Sun Sep 20 10:44:03 UTC 2020
root@smarc-rzg2l:~#

已经可以接上网线，并借助网路（如ssh服务）把相关文件拷贝到SD卡，为后边做准备。

需要的文件如下：

root@smarc-rzg2l:~# ls
Image-r9a07g044l2-smarc.dtb Image-smarc-rzg2l.bin core-image-qt-smarc-rzg2l.tar.bz2

EMMC创建分区：

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root@smarc-rzg2l:~# fdisk /dev/mmcblk0
Welcome to fdisk (util-linux 2.35.1).Changes will remain in memory only, until you decide to write them.Be careful before using the write command.
Command (m for help): oCreated a new DOS disklabel with disk identifier 0xf23e9318.
Command (m for help): nPartition type   p   primary (0 primary, 0 extended, 4 free)   e   extended (container for logical partitions)Select (default p): (Push the enter key)
Using default response p.Partition number (1-4, default 1): (Push the enter key)First sector (2048-124321791, default 2048): (Push the enter key)Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-124321791, default 124321791): +500M
Created a new partition 1 of type 'Linux' and of size 500 MiB.
Command (m for help): nPartition type   p   primary (1 primary, 0 extended, 3 free)   e   extended (container for logical partitions)Select (default p): (Push the enter key)
Using default response p.Partition number (2-4, default 2): (Push the enter key)First sector (1026048-124321791, default 1026048): (Push the enter key)Last sector, +/-sectors or +/-size{K,M,G,T,P} (1026048-124321791, default 124321791): (Push the enter key)
Created a new partition 2 of type 'Linux' and of size 58.8 GiB.
Command (m for help): pDisk /dev/mmcblk0: 59.29 GiB, 63652757504 bytes, 124321792 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisklabel type: dosDisk identifier: 0xf23e9318
Device         Boot   Start       End   Sectors  Size Id Type/dev/mmcblk0p1         2048   1026047   1024000  500M 83 Linux/dev/mmcblk0p2      1026048 124321791 123295744 58.8G 83 Linux
Command (m for help): wThe partition table has been altered.Calling ioctl() to re-read partition table.Syncing disks.root@smarc-rzg2l:~#

格式化EMMC：

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root@smarc-rzg2l:~# mkfs.ext4 /dev/mmcblk0p1mke2fs 1.45.7 (28-Jan-2021)Discarding device blocks: doneCreating filesystem with 512000 1k blocks and 128016 inodesFilesystem UUID: cd3a51a9-ef38-4399-888e-9773fcc41eccSuperblock backups stored on blocks:        8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
Allocating group tables: doneWriting inode tables: doneCreating journal (8192 blocks): doneWriting superblocks and filesystem accounting information: done
root@smarc-rzg2l:~# mkfs.ext4 /dev/mmcblk0p2mke2fs 1.45.7 (28-Jan-2021)Discarding device blocks: doneCreating filesystem with 15411968 4k blocks and 3858432 inodesFilesystem UUID: 07d98391-d70c-4eed-a3af-4227a7460a32Superblock backups stored on blocks:        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,        4096000, 7962624, 11239424
Allocating group tables: doneWriting inode tables: doneCreating journal (65536 blocks): doneWriting superblocks and filesystem accounting information: done
root@smarc-rzg2l:~#

挂载EMMC，拷贝内核、设备树、文件系统：

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root@smarc-rzg2l:~# mount /dev/mmcblk0p1 /mnt/root@smarc-rzg2l:~# cp Image-smarc-rzg2l.bin /mnt/root@smarc-rzg2l:~# cp Image-r9a07g044l2-smarc.dtb /mnt/root@smarc-rzg2l:~# umount /dev/mmcblk0p1root@smarc-rzg2l:~# mount /dev/mmcblk0p2 /mnt/root@smarc-rzg2l:~# tar xf core-image-qt-smarc-rzg2l.tar.bz2 -C /mnt/root@smarc-rzg2l:~# umount /dev/mmcblk0p2

关机，设置开发板SW11/SW1拨码开关模式：

重启开发板，设置环境变量：

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NOTICE:  BL2: v2.7(release):203c783-dirtyNOTICE:  BL2: Built : 06:57:02, Nov 10 2022NOTICE:  BL2: eMMC boot from partition 1NOTICE:  BL2: Load dst=0x1f840 src=(p:1)0x20000(256) len=0x10(1)NOTICE:  BL2: eMMC boot from partition 1NOTICE:  BL2: Load dst=0x1f9a0 src=(p:1)0x20010(256) len=0x28(1)NOTICE:  BL2: eMMC boot from partition 1NOTICE:  BL2: Load dst=0x44000000 src=(p:1)0x20090(256) len=0x6069(49)NOTICE:  BL2: eMMC boot from partition 1NOTICE:  BL2: Load dst=0x1f840 src=(p:1)0x20000(256) len=0x10(1)NOTICE:  BL2: eMMC boot from partition 1NOTICE:  BL2: Load dst=0x1f9a0 src=(p:1)0x20010(256) len=0x28(1)NOTICE:  BL2: Load dst=0x1f9a0 src=(p:1)0x20038(256) len=0x28(1)NOTICE:  BL2: eMMC boot from partition 1NOTICE:  BL2: Load dst=0x50000000 src=(p:1)0x26100(304) len=0xb0238(1410)NOTICE:  BL2: Booting BL31NOTICE:  BL31: v2.7(release):203c783-dirtyNOTICE:  BL31: Built : 06:57:02, Nov 10 2022

U-Boot 2021.10 (Mar 15 2023 - 07:34:17 +0000)
CPU:   Renesas Electronics K rev 2.1Model: smarc-rzg2lDRAM:  1.9 GiBWDT:   watchdog@0000000012800800WDT:   Started with servicing (60s timeout)MMC:   sd@11c00000: 0, sd@11c10000: 1Loading Environment from MMC... OKIn:    serial@1004b800Out:   serial@1004b800Err:   serial@1004b800U-boot WDT started!Net:Error: ethernet@11c20000 address not set.No ethernet found.
Hit any key to stop autoboot:  0Hit any key to stop autoboot:  0=> env default -a## Resetting to default environment=> setenv bootargs 'root=/dev/mmcblk0p2 rootwait'=> setenv bootcmd 'mmc dev 1; ext4load mmc 0:1 0x48080000 Image-smarc-rzg2l.bin; ext4load mmc 0:1 0x48000000 Image-r9a07g044l2-smarc.dtb; booti 0x48080000 - 0x48000000'=> saveenvSaving Environment to MMC... Writing to MMC(0)... OK

重启开发板，从emmc成功加载：

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BSP: RZG2L/RZG2L-SMARC-EVK/3.0.3LSI: RZG2LVersion: 3.0.3smarc-rzg2l login: rootLast login: Mon Sep 18 02:29:32 UTC 2023root@smarc-rzg2l:~# df -hFilesystem            Size  Used Avail Use% Mounted on/dev/root              58G  1.2G   54G   3% /devtmpfs              740M     0  740M   0% /devtmpfs                 933M     0  933M   0% /dev/shmtmpfs                 933M  9.7M  924M   2% /runtmpfs                 933M     0  933M   0% /sys/fs/cgrouptmpfs                 933M     0  933M   0% /tmptmpfs                 933M   28K  933M   1% /var/volatiletmpfs                 187M     0  187M   0% /run/user/0root@smarc-rzg2l:~#