2021-03-22 08:25:31 +00:00
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WPJ428 + SIMCOM 8202G
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=====================
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We try to build a FOSS 5GNR Router with OpenWRT.
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Some challenges we have encountered so far:
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- OpenWRT stable misses a patch to enable our board ethernet port -> we compile from source
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- The Modem Manager simtech plugin does not declare 5GNR
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2021-03-22 09:32:50 +00:00
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## Flash OpenWRT from uboot
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2021-03-22 08:25:31 +00:00
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2021-03-22 08:39:44 +00:00
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(Configure your computer with a static IP address 192.168.1.2/24 and make sure you have a running tftp server containing your image)
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First connect your UART cable on the router:
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2021-03-22 08:25:31 +00:00
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2021-03-22 08:39:44 +00:00
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Launch minicom
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```
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sudo minicom -D /dev/ttyUSB0
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```
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Then boot the router. Press repeatidly `[ENTER]` to get the following prompt:
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```
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(IPQ40xx) #
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```
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Then enter the following commands:
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```
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set ipaddr 192.168.1.1
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set serverip 192.168.1.2
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ping ${serverip}
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sf probe
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2021-03-22 09:10:49 +00:00
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tftpboot 0x84000000 openwrt-ipq40xx-generic-compex_wpj428-squashfs-sysupgrade.bin
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2021-03-22 08:39:44 +00:00
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sf erase 0x00180000 +$filesize
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sf write 0x84000000 0x00180000 $filesize
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bootipq
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```
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2021-03-22 09:10:49 +00:00
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## Compile
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```
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make menuconfig
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scripts/diffconfig.sh > ../wpj428/config
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make download
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make -j $(nproc)
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```
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2021-03-22 09:12:40 +00:00
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To inject a config file:
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2021-03-22 09:10:49 +00:00
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2021-03-22 09:12:40 +00:00
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```bash
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# Append changes to bottom of .config
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cat config >> .config
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# Apply changes
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make defconfig
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make download
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make -j $(nproc)
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```
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2021-03-22 09:10:49 +00:00
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2021-03-22 09:32:50 +00:00
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## Flash OpenWRT from OpenWRT (!)
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Copy the firmware in router's `/tmp`.
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Why `/tmp`? Your router has more volatile storage than persistent one, moreover you will overwrite the persistent storage.
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So, copy the firmware in `/tmp`!
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Next, we will use the `sysupgrade` command. `-v` is verbose, `-n` ask openwrt to erase configuration files (ie. ask for a factory reset).
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```
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sysupgrade -v -n /tmp/openwrt-ipq40xx-generic-compex_wpj428-squashfs-sysupgrade.bin
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```
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## Get root on MimoAP
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1. Download a backup from your router firmware
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2. Extract it, edit `/etc/shadow`, replace the hash of the `root` user with the one from the `admin` user
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3. Recompress the folder hierarchy
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4. Import this new archive as backup in MimoAP
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5. Run `ssh root@192.168.1.1` (replace with the IP address of your router) and use your `admin` password
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6. Enjoy! (But you should really install a vanilla OpenWRT instead)
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## Flash OpenWRT from Compex ROM (MimoAP)
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*Not written*
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## Flash MimoAP/OpenWRT with Compex tools on Uboot
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*Not written*
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2021-03-22 08:39:44 +00:00
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## Logs
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uboot logs:
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```
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Format: Log Type - Time(microsec) - Message - Optional Info
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Log Type: B - Since Boot(Power On Reset), D - Delta, S - Statistic
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S - QC_IMAGE_VERSION_STRING=BOOT.BF.3.1.1-00118
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S - IMAGE_VARIANT_STRING=DAABANAZA
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S - OEM_IMAGE_VERSION_STRING=CRM
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S - Boot Config, 0x00000021
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S - Reset status Config, 0x00000000
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S - Core 0 Frequency, 0 MHz
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B - 261 - PBL, Start
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B - 1339 - bootable_media_detect_entry, Start
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B - 1679 - bootable_media_detect_success, Start
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B - 1693 - elf_loader_entry, Start
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B - 5073 - auth_hash_seg_entry, Start
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B - 7219 - auth_hash_seg_exit, Start
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B - 577690 - elf_segs_hash_verify_entry, Start
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B - 695375 - PBL, End
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B - 695399 - SBL1, Start
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B - 786439 - pm_device_init, Start
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D - 7 - pm_device_init, Delta
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B - 787885 - boot_flash_init, Start
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D - 52818 - boot_flash_init, Delta
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B - 844845 - boot_config_data_table_init, Start
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D - 3835 - boot_config_data_table_init, Delta - (419 Bytes)
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B - 852054 - clock_init, Start
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D - 7575 - clock_init, Delta
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B - 864102 - CDT version:2,Platform ID:8,Major ID:1,Minor ID:0,Subtype:0
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B - 867516 - sbl1_ddr_set_params, Start
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B - 872614 - cpr_init, Start
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D - 2 - cpr_init, Delta
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B - 876996 - Pre_DDR_clock_init, Start
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D - 4 - Pre_DDR_clock_init, Delta
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D - 13176 - sbl1_ddr_set_params, Delta
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B - 890735 - pm_driver_init, Start
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D - 2 - pm_driver_init, Delta
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B - 960961 - sbl1_wait_for_ddr_training, Start
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D - 28 - sbl1_wait_for_ddr_training, Delta
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B - 976579 - Image Load, Start
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D - 151978 - QSEE Image Loaded, Delta - (297240 Bytes)
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B - 1128985 - Image Load, Start
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D - 1447 - SEC Image Loaded, Delta - (2048 Bytes)
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B - 1139420 - Image Load, Start
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D - 211388 - APPSBL Image Loaded, Delta - (432219 Bytes)
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B - 1351204 - QSEE Execution, Start
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D - 60 - QSEE Execution, Delta
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B - 1357421 - SBL1, End
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D - 664130 - SBL1, Delta
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S - Flash Throughput, 2007 KB/s (731926 Bytes, 364613 us)
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S - DDR Frequency, 537 MHz
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U-Boot 2012.07 [Chaos Calmer 15.05.1,r35193] (Jul 25 2017 - 11:36:26)
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smem ram ptable found: ver: 1 len: 3
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DRAM: 256 MiB
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machid : 0x8010000
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NAND: SF: Detected MX25L25635E with page size 4 KiB, total 32 MiB
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ipq_spi: page_size: 0x100, sector_size: 0x1000, size: 0x2000000
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32 MiB
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MMC:
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*** Warning - bad CRC, using default environment
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In: serial
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Out: serial
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Err: serial
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machid: 8010000
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flash_type: 0
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Hit any key to stop autoboot: 0
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Net: MAC0 addr:4:f0:21:65:18:12
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PHY ID1: 0x4d
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PHY ID2: 0xd0b1
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ipq40xx_ess_sw_init done
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eth0
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```
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## Sources
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- [All the commits in OpenWRT about the WPJ428](https://git.openwrt.org/?p=openwrt%2Fopenwrt.git&a=search&h=HEAD&st=commit&s=WPJ428)
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2021-03-22 09:10:49 +00:00
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- https://openwrt.org/docs/guide-developer/build-system/use-buildsystem
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