feat: LibreRouter v1 dual-TFTP boot support#4
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Extend UBootTFTPStrategy to stage an optional initrd image alongside the root image, setting bootfile_initrd in U-Boot env. Update the LibreRouter v1 target YAML to use two TFTP loads (kernel + rootfs CPIO) with rd_start/rd_size bootargs for external initramfs boot.
Change boot_command from setenv bootargs + bootm to `bootm 0x82000000 0x84000000` which tells U-Boot about the ramdisk natively, bypassing bootargs/cmdline issues with the Atheros U-Boot 1.1.x fork.
Load the uImage ramdisk to 0x84000FC0 so the CPIO data (past the 64-byte header) starts at 0x84001000 (page-aligned). The kernel requires initrd_start to be page-aligned and rejects it with "initrd start must be page aligned" otherwise.
The initramfs boot reaches a shell with hostname (none) because mount_root fails to pivot from ramfs and lime-config uci-defaults never set the hostname. Accept root@(none) and root@OpenWrt in addition to root@LiMe-XXXXXX.
The root cause of hostname (none) is missing /proc in the initramfs CPIO, not the prompt regex. Keep the strict match so CI fails fast when lime-config doesn't run.
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Summary
librerouter_v1.yamltarget with dual-TFTP boot (kernel + ramdisk uImage at separate RAM addresses)tftpstrategy.pyto stage an optional initrd image alongside the root image0x84000FC0) so CPIO data lands at0x84001000LiMe-XXXXXXprompt regex (revert temporary relaxation)Context
The ath79 ImageBuilder cannot produce an initramfs kernel. This dual-TFTP approach ships
kernel.bin+rootfs.uimageas separate TFTP artifacts. U-Boot'sbootm <kernel> <ramdisk>passes initrd boundaries natively, bypassingCONFIG_CMDLINE_OVERRIDE.Test plan
test-firmware librerouter_1)