872863b95a
- this way, one doesn't need to cripple UFS to be able to boot from SD
- USB didn't get the same treatment as it's slow and **not working**...
- ...and beyond me to fix; both OTG and Host mode are funky in u-boot...
- ...but seem to work fine in kernel
- IMPORTANT: keep in mind: "SDcard is NOT UFS (4k block)" and don't fall for traps!
- Network note:
- `setenv ethaddr xx:xx:xx:xx:xx:xx` & `saveenv` & `reset`
- required for network booting; mtk doesn't use random/cpu# MAC
- required for stable MAC in kernel (keep IP from changing, etc)
51 lines
1.7 KiB
Diff
51 lines
1.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Ricardo Pardini <ricardo@pardini.net>
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Date: Sat, 3 Jan 2026 20:48:38 +0100
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Subject: GENIO: mt8195: boot order: SD -> UFS -> eMMC -> USB -> Network
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Quality of life improvement for users who want to try different OS's
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using SD card. With this change, once u-boot is loaded (from BootRoM
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to UFS, always), it will try to boot an OS in the following order:
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SD -> SCSI 2 (UFS) -> eMMC -> USB -> PXE(pxelinux) -> DHCP (PXE-EFI)
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Of course, if board in question doesn't have an eMMC, it won't boot
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from there, and that's the most common case on mt8195. It could be
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argued that USB should boot after SD, but that causes an USB scan
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that is slow and seems prone to failure currently.
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Network already works on mt8195, so add it to the end of the boot
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order. For it to actually work, one needs to set a MAC address in
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the u-boot environment, and save it (it will be stored on UFS LUN 1).
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The kernel will also use the same MAC.
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in-uboot prompt: `setenv ethaddr xx:...` and `saveenv`
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in-kernel: use `fw_setenv` if available
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Signed-off-by: Ricardo Pardini <ricardo@pardini.net>
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---
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include/configs/mt8195.h | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/include/configs/mt8195.h b/include/configs/mt8195.h
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index 111111111111..222222222222 100644
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--- a/include/configs/mt8195.h
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+++ b/include/configs/mt8195.h
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@@ -121,9 +121,12 @@
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#endif
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#define BOOT_TARGET_DEVICES(func) \
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+ func(MMC, mmc, 0) \
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BOOT_TARGET_SCSI(func) \
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- BOOT_TARGET_MMC(func) \
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- BOOT_TARGET_USB(func)
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+ func(MMC, mmc, 1) \
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+ BOOT_TARGET_USB(func) \
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+ func(PXE, pxe, na) \
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+ func(DHCP, dhcp, na)
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#if !defined(CONFIG_EXTRA_ENV_SETTINGS)
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--
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Armbian
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