Crash without display on RPi4 8Gb

[Peter Robinson]

> Hey Mattias,
>
> In testing the RPi4 8Gb I've run into an interesting crash, not seen
> it on either a 4Gb or 2Gb mode, and I'm wondering if you're aware of
> it. It occurs with either the latest firmware or one from April 1st.
>
> If I boot without a display connected, so just via serial console, I
> see the following crash. If I plug a display in (I've only tried the
> HDMI port next to the USB-C power it boots fine. I also don't see the
> crash on 2020.07, just the 2020 RCs, tried rc1 and rc5.
>
> I vaguely remember something similar to this in the past but I've not
> managed to find a reference yet.

And of course I find it right after sending it:
https://lists.denx.de/pipermail/u-boot/2019-July/376007.html
https://github.com/raspberrypi/firmware/issues/1157

> Peter
>
> U-Boot 2020.10-rc5 (Sep 27 2020 - 00:00:00 +0000)
>
> DRAM:  7.9 GiB
> RPI 4 Model B (0xd03114)
> MMC:   mmcnr at 7e300000: 1, emmc2 at 7e340000: 0
> Loading Environment from FAT... *** Warning - bad CRC, using default environment
>
> In:    serial
> Out:   serial
> Err:   serial
> Net:   eth0: ethernet at 7d580000
> PCIe BRCM: link up, 5.0 Gbps x1 (SSC)
> starting USB...
> Bus xhci_pci: probe failed, error -110
> No working controllers found
> Hit any key to stop autoboot:  0
> switch to partitions #0, OK
> mmc0 is current device
> "Synchronous Abort" handler, esr 0x96000004
> elr: 000000000009c1d4 lr : 0000000000091d60 (reloc)
> elr: 000000003df751d4 lr : 000000003df6ad60
> x0 : d519b040aa010000 x1 : 000000000000005c
> x2 : 0000000000800000 x3 : 000000003dfd2e50
> x4 : b900080152b00000 x5 : 000000000000005c
> x6 : 000000003dfd2e50 x7 : b900080152afff90
> x8 : fffffffffffffff0 x9 : 0000000000000008
> x10: 000000003db5eb30 x11: 000000003db63ef0
> x12: 0000000000000000 x13: 0000000000000200
> x14: 000000003db48fb0 x15: 0000000000000021
> x16: 000000003df772a4 x17: 118e7ea1df36071f
> x18: 000000003db54d90 x19: 0000000000000070
> x20: 000000003dfd2890 x21: 0000000000000000
> x22: 0000000000000005 x23: 000000000000000a
> x24: 0000000000000000 x25: 000000003dfe5114
> x26: 000000003dfbe8b7 x27: 000000003dfc7090
> x28: 0000000000000065 x29: 000000003db47ad0
>
> Code: eb03005f 54ffff43 f9400ca4 17ffffe0 (f9400404)
> Resetting CPU ...
>
> resetting ...