Beginners • Re: Uboot for raspberry Pi 5

Thank you all for suggestions.

Here is what I did for getting u-boot console.
Download the latest u-boot sources, it already has initial patch support for rpi5. The defconfig is rpi_arm64_defconfig for building u-boot. Post build, copy the u-boot.bin in the BOOT partition of your sd card.

In the config.txt
kernel=u-boot.bin

Use the pi debug, to connect to uart between hdmi ports. Boot the board, you can stop the autoboot using space etc etc.

Logs:

RPi: BOOTLOADER release VERSION:4c845bd3 DATE: 2024/02/16 TIME: 15:28:41
BOOTMODE: 0x06 partition 0 build-ts BUILD_TIMESTAMP=1708097321 serial 1877122c boardrev c04170 stc 3950198
AON_RESET: 00000003 PM_RSTS 00001000
M.2 PCIe HAT not detected.
usb_pd_init status 2
XHCI-STOP
xHC0 ver: 272 HCS: 03000440 140000f1 07ff000a HCC: 0240fe6d
USBSTS 1
xHC0 ver: 272 HCS: 03000440 140000f1 07ff000a HCC: 0240fe6d
xHC0 ports 3 slots 64 intrs 4
XHCI-STOP
xHC1 ver: 272 HCS: 03000440 140000f1 07ff000a HCC: 0240fe6d
USBSTS 1
xHC1 ver: 272 HCS: 03000440 140000f1 07ff000a HCC: 0240fe6d
xHC1 ports 3 slots 64 intrs 4
Boot mode: SD (01) order f4
SD HOST: 200000000 CTL0: 0x00800000 BUS: 400000 Hz actual: 390625 HZ div: 512 (256) status: 0x1fff0000 delay: 276
SD HOST: 200000000 CTL0: 0x00800f00 BUS: 400000 Hz actual: 390625 HZ div: 512 (256) status: 0x1fff0000 delay: 276
OCR c0ff8000 [354]
CID: 00035344534e36344786933f315b0178
CSD: 400e0032db790001dbd37f800a404000
SD: bus-width: 4 spec: 2 SCR: 0x02458487 0x00000000
SD HOST: 200000000 CTL0: 0x00800f04 BUS: 50000000 Hz actual: 50000000 HZ div: 4 (2) status: 0x1fff0000 delay: 2
MBR: 0x00002000, 1048576 type: 0x0c
MBR: 0x00102000,123678720 type: 0x83
MBR: 0x00000000, 0 type: 0x00
MBR: 0x00000000, 0 type: 0x00
Trying partition: 0
type: 32 lba: 8192 'mkfs.fat' ' bootfs ' clusters 261116 (4)
rsc 32 fat-sectors 2040 root dir cluster 2 sectors 0 entries 0
FAT32 clusters 261116
[sdcard] autoboot.txt not found
Select partition rsts 0 C(boot_partition) 0 EEPROM config 0 result 0
Trying partition: 0
type: 32 lba: 8192 'mkfs.fat' ' bootfs ' clusters 261115 (4)
rsc 32 fat-sectors 2040 root dir cluster 2 sectors 0 entries 0
FAT32 clusters 261115
Read config.txt bytes 1232 hnd 0x8b20
[sdcard] pieeprom.upd not found
usb_max_current_enable default 0 max-current 1500
Read bcm2712-rpi-5-b.dtb bytes 77755 hnd 0xe6
dt-match: compatible: raspberrypi,5-model-b match: brcm,bcm2712
dt-match: compatible: brcm,bcm2712 match: brcm,bcm2712
Selecting USB low current limit

NOTICE: BL31: v2.6(release):v2.6-239-g2a9ede0bd
NOTICE: BL31: Built : 14:26:57, Jun 22 2023


U-Boot 2024.07-rc4-00220-g16324b43db (Jun 18 2024 - 12:20:14 +0530)

DRAM: 1020 MiB (effective 4 GiB)
mbox: Header response code invalid
RPI 5 Model B (0xc04170)
Core: 21 devices, 10 uclasses, devicetree: board
MMC: mmc@fff000: 0, mmc@1100000: 1
Loading Environment from FAT... Unable to read "uboot.env" from mmc0:1...
In: serial,usbkbd
Out: serial,vidconsole
Err: serial,vidconsole
mbox: Header response code invalid
bcm2835: Could not query MAC address
Net: No ethernet found.

starting USB...
No working controllers found
Hit any key to stop autoboot: 0
U-Boot>
U-Boot>
U-Boot>
U-Boot>
U-Boot>
U-Boot> getenv
Unknown command 'getenv' - try 'help'
U-Boot> fatload
fatload - load binary file from a dos filesystem

Usage:
fatload <interface> [<dev[:part]> [<addr> [<filename> [bytes [pos]]]]]
- Load binary file 'filename' from 'dev' on 'interface'
to address 'addr' from dos filesystem.
'pos' gives the file position to start loading from.
If 'pos' is omitted, 0 is used. 'pos' requires 'bytes'.
'bytes' gives the size to load. If 'bytes' is 0 or omitted,
the load stops on end of file.
If either 'pos' or 'bytes' are not aligned to
ARCH_DMA_MINALIGN then a misaligned buffer warning will
be printed and performance will suffer for the load.
U-Boot>
U-Boot>
U-Boot>

Statistics: Posted by d336aky — Sun Jun 30, 2024 8:10 am

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