Flashing Edison

[Simon Glass]

Hi Andy,

I've dusted off the Edison and have confirmed that it starts up:

# ub-int -T edison


******************************
PSH KERNEL VERSION: b0182b2b
WR: 20104000
******************************

SCU IPC: 0x800000d0  0xfffce92c

PSH miaHOB version: TNG.B0.VVBD.0000000c

microkernel built 11:24:08 Feb  5 2015

******* PSH loader *******
PCM page cache size = 192 KB
Cache Constraint = 0 Pages
Arming IPC driver ..
Adding page store pool ..
PagestoreAddr(IMR Start Address) = 0x04899000
pageStoreSize(IMR Size)          = 0x00080000

*** Ready to receive application ***


U-Boot 2020.10-rc3-00032-gd9f6680e925-dirty (Sep 03 2020 - 18:44:28 -0600)

CPU:   Genuine Intel(R) CPU   4000  @  500MHz
DRAM:  980.6 MiB
WDT:   Started with servicing (60s timeout)
MMC:   mmc at ff3fc000: 0, mmc at ff3fa000: 1
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Net:   No ethernet found.
Hit any key to stop autoboot:  0
Target:blank
Partitioning already done...
Flashing already done...


******************************
PSH KERNEL VERSION: b0182b2b
WR: 20104000
******************************

SCU IPC: 0x800000d0  0xfffce92c

PSH miaHOB version: TNG.B0.VVBD.0000000c

microkernel built 11:24:08 Feb  5 2015

******* PSH loader *******
PCM page cache size = 192 KB
Cache Constraint = 0 Pages
Arming IPC driver ..
Adding page store pool ..
PagestoreAddr(IMR Start Address) = 0x04899000
pageStoreSize(IMR Size)          = 0x00080000

*** Ready to receive application ***


U-Boot 2020.10-rc3-00032-gd9f6680e925-dirty (Sep 03 2020 - 18:44:28 -0600)

CPU:   Genuine Intel(R) CPU   4000  @  500MHz
DRAM:  980.6 MiB
WDT:   Started with servicing (60s timeout)
MMC:   mmc at ff3fc000: 0, mmc at ff3fa000: 1
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Net:   No ethernet found.
Hit any key to stop autoboot:  0
=>


Now I can see the instructions in doc/board/intel/edison.rst but I am
not sure how to translate that into a lab. Basically I have:

- UART
- Relay hooked up to the RESET button (SW1 U15)
- power control

The instructions in edison.rst are quite complex. I can run the
xfstk-dldr-solo tool but I don't want to have to download and install
a recovery image even time I want to try a new U-Boot

Basically what I want is to be able to send U-Boot to the board over
USB and then have it boot into that U-Boot. It seems that once U-Boot
is installed the board behaves differently, but there must be a way
around that.

Any help much appreciated. It was nice to meet you in person!

Thanks,
Simon