///////////////////////////////////////////
                                         //
  date: Fri 31 Jan 2025 12:00:06 PM PST  //
  subj: NTC chip C.H.I.P work log        //
  auth: bbsing                           //
                                         //
///////////////////////////////////////////
-------------------------------------------

,---- [ progress :| ]
| Found something odd: 
|---------------------
| When jumping pins for FEL mode all systems think the usb device
| is not an allwinner device. In fastboot mode allwinner is shown,
| but shortly after it disconnects.
|
| FEL mode shows:
| Onda (unverified) V972 tablet in flashing mode [02B3]
|
| I flashed the chip and its working in a very basic way. No wifi
| or bluetooth, but at least its working. The root file system is
| not the correct size to build the entire system like an original
| chip. Yocto root file system is 2GB where a stock CHIP has a 4GB
| root file system.
|
| I used: Poky (Yocto Project Reference Distro) 1.8.2 chip Still
| testing. I used Ubuntu 18.0.4 LTS VM running in  VirtualBox.
|
`----


Uhg .. I don't  want to stop working on this and get my exercise
(bike ride), there is a wind advisory, and its freaken cold out.
If I don't go now I'll not go today and I'll feel like crap. 

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
,----------------------------------------------------,
| [][][][][]  [][][][][]  [][][][]  [][__]  [][][][] |
|                                                    |
|  [][][][][][][][][][][][][][_]    [][][]  [][][][] |
|  [_][][][][][][][][][][][][][ |   [][][]  [][][][] |
| [][_][][][][][][][][][][][][]||     []    [][][][] |
| [__][][][][][][][][][][][][__]    [][][]  [][][]|| |
|   [__][________________][__]              [__][]|| |
`----------------------------------------------------'
	     Art by Seal do Mar

%{---------------------------------------------------------------+
 |                                                               |
 | --------------------------------------------------            |
 | > chip-tools$ ./chip-flash-chip.sh ~/yocto/images/            |
 | --------------------------------------------------            |
 |                                                               |
 | Images directory: /home/farts/yocto/images/                   |
 | == Preparing u-boot ==                                        |
 | 0+1 records in                                                |
 | 1+0 records out                                               |
 | 4194304 bytes (4.2 MB, 4.0 MiB) copied, 0.0184158 s, 228 MB/s |
 | OK                                                            |
 | == Preparing u-boot script ==                                 |
 | Image Name:   u-boot script                                   |
 | Created:      Fri Jan 31 12:33:06 2025                        |
 | Image Type:   ARM Linux Script (uncompressed)                 |
 | Data Size:    97 Bytes = 0.09 KiB = 0.00 MiB                  |
 | Load Address: 00000000                                        |
 | Entry Point:  00000000                                        |
 | Contents:                                                     |
 |    Image 0: 89 Bytes = 0.09 KiB = 0.00 MiB                    |
 | OK                                                            |
 | == Waiting for CHIP connected and jumpered in FEL mode ==     |
 | OK                                                            |
 | == Upload spl to SRAM and execute it ==                       |
 | OK                                                            |
 | == Upload u-boot to SRAM ==                                   |
 | OK                                                            |
 | == Upload u-boot script to SRAM ==                            |
 | OK                                                            |
 | == Execute the main u-boot binary ==                          |
 | OK                                                            |
 | == Waiting for CHIP connected and jumpered in FEL mode ==     |
 | ...........................OK                                 |
 | == Read NAND info ==                                          |
 | OK                                                            |
 | == Preparing spl ==                                           |
 | 48+0 records in                                               |
 | 48+0 records out                                              |
 | 49152 bytes (49 kB, 48 KiB) copied, 0.00432904 s, 11.4 MB/s   |
 | 48+0 records in                                               |
 | 48+0 records out                                              |
 | 49152 bytes (49 kB, 48 KiB) copied, 0.00407118 s, 12.1 MB/s   |
 | 48+0 records in                                               |
 | 48+0 records out                                              |
 | 49152 bytes (49 kB, 48 KiB) copied, 0.00495986 s, 9.9 MB/s    |
 | 48+0 records in                                               |
 | 48+0 records out                                              |
 | 49152 bytes (49 kB, 48 KiB) copied, 0.00414821 s, 11.8 MB/s   |
 | OK                                                            |
 | == Preparing u-boot ==                                        |
 | 0+1 records in                                                |
 | 1+0 records out                                               |
 | 4194304 bytes (4.2 MB, 4.0 MiB) copied, 0.0197579 s, 212 MB/s |
 | OK                                                            |
 | == Preparing u-boot script ==                                 |
 | Image Name:   u-boot script                                   |
 | Created:      Fri Jan 31 12:33:48 2025                        |
 | Image Type:   ARM Linux Script (uncompressed)                 |
 | Data Size:    746 Bytes = 0.73 KiB = 0.00 MiB                 |
 | Load Address: 00000000                                        |
 | Entry Point:  00000000                                        |
 | Contents:                                                     |
 |    Image 0: 738 Bytes = 0.72 KiB = 0.00 MiB                   |
 | OK                                                            |
 | == Waiting for CHIP connected and jumpered in FEL mode ==     |
 | OK                                                            |
 | == Upload spl to SRAM and execute it ==                       |
 | OK                                                            |
 | == Upload spl to SRAM ==                                      |
 | OK                                                            |
 | == Upload u-boot to SRAM ==                                   |
 | OK                                                            |
 | == Upload u-boot script to SRAM ==                            |
 | OK                                                            |
 | == Upload ubi to SRAM ==                                      |
 | 100% [================================================] 46137 |
 | kB,  479.6 kB/s                                               |
 | OK                                                            |
 | == Execute the main u-boot binary ==                          |
 | OK                                                            |
 | == Waiting for CHIP to flash and boot ==                      |
 | ........................OK                                    |
 | == Flashing completed successfully ==                         |
 +---------------------------------------------------------------%}

------------------------------------------------------------
I had to go back to the VM and reconnect the USB device (the
CHIP), otherwise it would not finish flashing due to a timeout
somewhere in the script > chip-flash-chip.sh  
------------------------------------------------------------

I found a post on reddit who sent a boot image to his chip via
UART and U-boot. 

This gave me an idea. I have another chip, I can use to copy the
kernel and other boot items off of and attempt to load
everything via UART. 

------------------------------------------------------------
Lots to learn here:
------------------
1) Find a CHIP server image. 
2) Attempt to flash using server image?