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Lee Lup Yuen 2023-10-30 23:11:19 +08:00
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README.md
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@ -78,6 +78,28 @@ It might be interesting to run Apache NuttX RTOS on both the D0 Multimedia Core
Let's explore...
# Flashing UART vs Serial Console
_We need to handle TWO UART Ports on Ox64?_
Yeah don't confuse the 2 UART Ports on Ox64! Let's give the UART Ports distinctive names...
1. __Ox64 Flashing UART__: Used for Flashing Ox64
+ Flashing UART TX is physical pin 1 / GPIO 14
+ Flashing UART RX is physical pin 2 / GPIO 15
+ Remember to connect GND
+ Baud 2,000,000 (2 Mbps)
1. __Ox64 Serial Console__: Used for Linux Serial Console (plus OpenSBI and U-Boot Bootloader)
+ Serial Console TX is physical pin 32 / GPIO 16
+ Serial Console RX is physical pin 31 / GPIO 17
+ Remember to connect GND
+ Baud 2,000,000 (2 Mbps)
Now we flash Ox64 and boot Linux...
# Flash OpenSBI and U-Boot Bootloader to Ox64 BL808
Before booting Linux on Ox64, we flash OpenSBI + U-Boot Bootloader to D0 Multimedia Core, and the Peripheral Interrupt Firmware to M0 Wireless Core. From [buildroot_bouffalo](https://github.com/openbouffalo/buildroot_bouffalo):
@ -98,7 +120,7 @@ Here are the steps, based on the [Official Flashing Instructions](https://github
[(Like this CP2102, which shows garbled text at 2 Mbps)](https://www.lazada.sg/products/i2037772272-s11135131253.html)
1. Connect a USB Serial Adapter to __Ox64 Flashing UART__:
1. To Test our USB Serial Adapter: Connect the USB Serial Adapter to __Ox64 Flashing UART__...
+ Flashing UART TX is physical pin 1 / GPIO 14
+ Flashing UART RX is physical pin 2 / GPIO 15
+ Remember to connect GND
@ -135,7 +157,7 @@ Here are the steps, based on the [Official Flashing Instructions](https://github
[(Source)](https://gist.github.com/lupyuen/43676407bbced733e65566879e18732b)
1. Initial Check: Set BL808 board to programming mode
1. Pre-Flash Check: Set BL808 board to programming mode
+ Remove the microSD Card
+ Press and Hold BOOT Button
+ Unplug and replug the Micro USB Port
@ -199,19 +221,19 @@ Here are the steps, based on the [Official Flashing Instructions](https://github
./BLDevCube-macos-x86_64
```
1. Run DevCube, select [BL808], and switch to [MCU] page
1. Run DevCube, select "BL808", and switch to "MCU" page
1. M0 Group[Group0]
1. M0 Group: Group0
Image Addr [0x58000000]
Image Addr: 0x58000000
[PATH to m0_lowload_bl808_m0.bin]
PATH: Select "m0_lowload_bl808_m0.bin"
1. D0 Group[Group0]
1. D0 Group: Group0
Image Addr [0x58100000]
Image Addr: 0x58100000
[PATH to d0_lowload_bl808_d0.bin]
PATH: Select "d0_lowload_bl808_d0.bin"
1. Set UART Rate to 230400.
@ -219,17 +241,17 @@ Here are the steps, based on the [Official Flashing Instructions](https://github
[(Same problem when flashing BL602)](https://lupyuen.github.io/articles/flash#flash-the-firmware)
1. Click 'Create & Download' and wait until it's done
1. Click "Create & Download" and wait until it's done
[(See the log)](https://gist.github.com/lupyuen/125e15be5ed1e034bed33d16ed496d87)
1. Switch to [IOT] page
1. Switch to "IOT" page
1. Enable 'Single Download'
Set Address to 0x800000
Choose [bl808-firmware.bin]
Select "bl808-firmware.bin"
1. Set UART Rate to 230400.
@ -237,7 +259,7 @@ Here are the steps, based on the [Official Flashing Instructions](https://github
[(Same problem when flashing BL602)](https://lupyuen.github.io/articles/flash#flash-the-firmware)
1. Click 'Create & Download' again and wait until it's done
1. Click "Create & Download" again and wait until it's done
[(See the log)](https://gist.github.com/lupyuen/e8c0aca0ebd0f1eae034b0996a5b3ec3)
@ -423,7 +445,19 @@ Based on the [Official Flashing Instructions](https://github.com/openbouffalo/bu
[(Source)](https://gist.github.com/lupyuen/3035a70d52d2d1d529e96f5292f54210)
Yep Linux is running on Ox64 yay!
Yep Linux is running on Ox64 yay!
1. If nothing appears...
Check that we are using [Bouffalo Lab DevCube 1.8.3](https://openbouffalo.org/static-assets/bldevcube/BouffaloLabDevCube-v1.8.3.zip)
[(1.8.4 and later won't work)](https://github.com/openbouffalo/buildroot_bouffalo/issues/60)
In BL Dev Cube, UART Rate (for MCU and IoT) should be 230400.
Don't set to 2000000, it will fail on macOS!
[(Same problem when flashing BL602)](https://lupyuen.github.io/articles/flash#flash-the-firmware)
# Inspect the Linux Image for Ox64 BL808