eMMC won't boot after program_pubkey

[3dlabsio]

After successfully testing a signed boot.img/boot.sig with SIGNED_BOOT=1 in boot.conf, committing the public key to OTP permanently results in eMMC not booting anymore.

I'm using the latest version from this repo (2/08/2022)

The cm4 green light yields 4 rapid blinks indicating start*.elf cannot be found.

Placing the same boot.img/boot.sig on a USB thumbdrive successfully boots via USB boot, so it doesn't appear to be a signing issue.

I have tried multiple things such as recreated the FAT32 boot partition, running fsck on it to repair it, ensuring it's properly labeled as "boot" with fat label -- nothing works, it seems as if the system cannot see or access /boot at all.

The recovery and USB msd signed images both also work via rpiboot, so it appears to be directly limited to the emmc not being seen.

Relevant UART output:

PM_RSTS: 0x00001000
part 00000000 reset_info 00000000
uSD voltage 3.3V

Boot mode: SD (01) order 254
NETCONSOLE 6665@172.168.1.8,6666:172.168.1.7/00:00:00:00:00:00
GENET: RESET_PHY
PHY ID 600d 84a2
NET_CONSOLE: wait for link
LINK STATUS: speed: 1000 full duplex
Link ready
GENET START: 64 16 32
GENET: UMAC_START 0xdca632e9 0xdb3f0000
NET 0.0.0.0 0.0.0.0 gw 0.0.0.0 tftp 0.0.0.0
RX: 0 IP: 0 IPV4: 0 MAC: 0 UDP: 0 UDP RECV: 0 IP_CSUM_ERR: 0 UDP_CSUM_ERR: 0
SD HOST: 250000000 CTL0: 0x00000000 BUS: 200000 Hz actual: 200000 HZ div: 1250 (625) status: 0x1fff0000 delay: 540
SD HOST: 250000000 CTL0: 0x00000f00 BUS: 200000 Hz actual: 200000 HZ div: 1250 (625) status: 0x1fff0000 delay: 540
EMMC
SD retry 1 oc 0
SD HOST: 250000000 CTL0: 0x00000000 BUS: 200000 Hz actual: 200000 HZ div: 1250 (625) status: 0x1fff0000 delay: 540
OCR c0ff8080 [0]
CID: 00150100414a54443452069718bc0487
Failed to open device: 'sdcard' (cmd 83a0010 status 0)
Retry SD 1
SD HOST: 250000000 CTL0: 0x00000000 BUS: 200000 Hz actual: 200000 HZ div: 1250 (625) status: 0x1fff0000 delay: 540
SD HOST: 250000000 CTL0: 0x00000f00 BUS: 200000 Hz actual: 200000 HZ div: 1250 (625) status: 0x1fff0000 delay: 540
EMMC
SD retry 1 oc 0
SD HOST: 250000000 CTL0: 0x00000000 BUS: 200000 Hz actual: 200000 HZ div: 1250 (625) status: 0x1fff0000 delay: 540
OCR c0ff8080 [0]
CID: 00150100414a54443452069718bc0487
Failed to open device: 'sdcard' (cmd 83a0010 status 0)

[timg236]

I can reproduce this, weirdly this works fine on the lite with sdcard

[timg236]

@3dlabsio Please could you give the attached EEPROM a try. It looks as though the RSA signature checks in secure-boot OTP was triggering an issue in the EMMC setup that caused it to take a long time to respond to CSD.

pieerom-emmc-secure-boot-fix.zip

[3dlabsio]

@timg236 This is confirmed working. Thanks for the quick fix. On a side note, it appears that config.txt still needs to be present in /boot or USB ports didn't get initialized on my system.

[timg236]

By "/boot" are you referring to the file-system contained within boot.img? If so, then yes, you need to have config.txt file with either otg_mode=1 (preferred) or dtoverlay=dwc2,dr_mode=host because by default in the USB PHY is not enabled. The Bullseye OS image contains the following in the default config.txt file.

[cm4]
otg_mode=1

[pelwell]

Note that if the only config.txt setting required is otg_mode=1 then, depending on your application, you may prefer to set that semi-permanently in the EEPROM config:

[config.txt]
otg_mode=1

[timg236]

@3dlabsio The pieeprom.original.bin files were updated in this commit so marking the EMMC issues as resolved. Please comment if this is not the case. https://github.com/raspberrypi/usbboot/commit/34925c0814a0d2eb96f895ebd33eab8e1b1a5387