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Raspberry pi 4B Rev 1.4 board fails to boot at u-boot

Description

Latest revision of raspberry pi 4B board (Rev 1.4, which has SoC 2711ZPKFSB06C0T on it) can't boot with "No partition table" message like following:

 

U-Boot 2020.10 (Jun 29 2020 - 03:06:40 +0000) DRAM: 7.7 GiB RPI 4 Model B (0xd03114) MMC: mmcnr@7e300000: 1, emmc2@7e340000: 0 Loading Environment from FAT... ** No partition table - mmc 0 ** In: serial Out: serial Err: serial Net: eth0: ethernet@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 ** No partition table - mmc 0 ** [snip]

 

After several research, I've found similar bug report here: 255080 – U-Boot build for Raspberry Pi 4 (arm64) does not boot from MicroSD card slot (freebsd.org)

As suggested there, I've confirmed that upgrading u-boot to 2021.04 version fixes the issue (but 2021.01 doesn't). The cause would be related to the change of the DMA hardware.

2711ZPKFSB06BOT vs. 2711ZPKFSB06C0T is a major change in that there is a bunch of logic special to the B0T variant to deal with a DMA limitation of not being able to span the full address space. The C0T variant has the hardware fixed and is not limited to the lower 3 GiBytes. The RPi firmware likely configures the C)T parts differently in various ways.

I haven't took a careful look of that Linux kernel has similar issue or not, but it seems like there are no obvious problem on SD card access etc. after kernel boot.

 

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Activity

Walt Miner 
December 8, 2021 at 3:06 PM

Close for LL 12.1.0

Hiroyuki Ishii 
September 24, 2021 at 12:12 AM

merged for master and lamprey.

Hiroyuki Ishii 
September 13, 2021 at 12:51 AM

> Does 2021.07 work as well ?

Yes it worked.

> We should get that into upstream meta-raspberrypi (dunfell) . Makes sense to discuss in the next devcall and push a solution upstream.

Okay, agree. I'm likely to join next devcall but maybe cannot since I'll get a 2nd vaccination on that day.

Jan-Simon Moeller 
September 10, 2021 at 11:20 AM

Does 2021.07 work as well ? We should get that into upstream meta-raspberrypi (dunfell) . Makes sense to discuss in the next devcall and push a solution upstream.

Hiroyuki Ishii 
September 9, 2021 at 1:13 AM

I'll post a patch for upgrading u-boot for raspi later. It should be confirmed that older revision of raspi 4B can be boot correctly with it but unfortunately I don't have such hardware. Can someone confirm it?

, , any comments?

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Raspberry Pi 4

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2m logged1h 58m remaining

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Created September 9, 2021 at 1:08 AM
Updated December 8, 2021 at 3:06 PM
Resolved September 24, 2021 at 12:12 AM

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