[PATCH RFC u-boot-mvebu 0/2] arm: mvebu: Fix eMMC boot

[Martin Rowe]

On Sat, 4 Mar 2023 at 10:40, Pali Rohár <pali at kernel.org> wrote:

> Boot configuration stored in EXT_CSC register is completely ignored by
> BootROM:
>
> https://lore.kernel.org/u-boot/CAOAjy5SYPPzWKok-BSGYwZwcKOQt_aZPgh6FTbrFd3F=8DM5ZQ@mail.gmail.com/
>
> Reflect this eMMC booting in documentation and in the code.
>
> Martin, can you test this patch series if SPL and main U-Boot is loaded
> from the same eMMC HW partition?
>

boot0: u-boot

Works fine, no issues.


boot0: zeroed
boot1: u-boot
user: zeroed

It succeeds, eventually...
==============================
BootROM - 1.73

Booting from MMC
BootROM: Bad header at offset 00000000
BootROM: Bad header at offset 00200000
Switching BootPartitions.

U-Boot SPL 2023.04-rc3-00159-gd1653548d2-dirty (Mar 05 2023 - 11:50:45
+1000)
High speed PHY - Version: 2.0
EEPROM TLV detection failed: Using static config for Clearfog Pro.
Detected Device ID 6828
board SerDes lanes topology details:
 | Lane # | Speed |  Type       |
 --------------------------------
 |   0    |   3   | SATA0       |
 |   1    |   0   | SGMII1      |
 |   2    |   5   | PCIe1       |
 |   3    |   5   | USB3 HOST1  |
 |   4    |   5   | PCIe2       |
 |   5    |   0   | SGMII2      |
 --------------------------------
High speed PHY - Ended Successfully
mv_ddr: 14.0.0
DDR3 Training Sequence - Switching XBAR Window to FastPath Window
mv_ddr: completed successfully
Trying to boot from MMC1
ERROR: Invalid kwbimage v1
mmc_load_image_raw_sector: mmc block read error
spl: mmc: wrong boot mode
Trying to boot from BOOTROM
Returning to BootROM (return address 0xffff05c4)...
Timeout waiting card ready
BootROM: Image checksum verification PASSED


U-Boot 2023.04-rc3-00159-gd1653548d2-dirty (Mar 05 2023 - 11:50:45 +1000)

SoC:   MV88F6828-A0 at 1600 MHz
DRAM:  1 GiB (800 MHz, 32-bit, ECC not enabled)
Core:  38 devices, 22 uclasses, devicetree: separate
MMC:   mv_sdh: 0
Loading Environment from MMC... *** Warning - bad CRC, using default
environment

Model: SolidRun Clearfog A1
Board: SolidRun Clearfog Pro
Net:
Warning: ethernet at 70000 (eth1) using random MAC address - 12:07:8b:f9:7a:6f
eth1: ethernet at 70000
Warning: ethernet at 30000 (eth2) using random MAC address - ee:ed:f3:bb:c2:af
, eth2: ethernet at 30000
Warning: ethernet at 34000 (eth3) using random MAC address - ae:34:b9:bb:28:c6
, eth3: ethernet at 34000
Hit any key to stop autoboot:  0
=>
==============================

Between "Returning to BootROM" and "Timeout waiting card ready" takes
around 315 seconds. That's long enough that I thought it had hung
completely and I only noticed it continue because I left it running while
working on something else. I tried several things to reduce this timeout,
including reverting to the "non-removable" dts for shdci, but nothing seems
to affect it.

When bootloader is stored on Boot 0, then SPL should take care of
> loading and executing main U-Boot. When it is stored on Boot 1 or User
> Data then SPL should return back to BootROM and let BootROM to load and
> execute main U-Boot.
>
> Pali Rohár (2):
>   tools: kwboot: Fix MMC HW boot partitions info
>   arm: mvebu: spl: Load proper U-Boot from eMMC Boot 0 partition
>
>  arch/arm/mach-mvebu/Kconfig |  1 +
>  arch/arm/mach-mvebu/spl.c   | 13 +++++++------
>  tools/kwboot.c              |  6 +++---
>  3 files changed, 11 insertions(+), 9 deletions(-)
>
> --
> 2.20.1
>
>