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FS#3552 - Linksys RE6500 bootloops with latest snapshots #8577

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openwrt-bot opened this issue Jan 1, 2021 · 5 comments
Open

FS#3552 - Linksys RE6500 bootloops with latest snapshots #8577

openwrt-bot opened this issue Jan 1, 2021 · 5 comments
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@openwrt-bot
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openwrt-bot commented Jan 1, 2021

bjonglez:

The RE6500 was working fine on an old 19.07 snapshot: OpenWrt 19.07-SNAPSHOT r10578-b3d70f628b

I sysupgraded to latest snapshot and it does not come up. Judging from the LEDs, it seems to bootloop.

Booting the latest snapshot initramfs through TFTP works. I sysupgraded again from the initramfs, and it still bootloops.

Possibly related to FS#3539. I will try to get a serial output to see what happens.

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openwrt-bot commented Jan 1, 2021

bjonglez:

Ok, on the serial port, it goes up to:

U-Boot 1.1.3 (Jun 2 2015 - 15:52:13)

Board: Ralink APSoC DRAM: 64 MB
relocate_code Pointer at: 83f20000

It spends several seconds here, and then reboots.

According to the wiki, there should be kernel boot log just after this point.

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openwrt-bot commented Jan 1, 2021

bjonglez:

It works with a self-built image on r15386-c22b689cf8

Probably an issue with kernel size, my build:

u-boot legacy uImage, MIPS OpenWrt Linux-5.4.85, Linux/MIPS, OS Kernel Image (lzma), 2407280 bytes, Fri Jan 1 12:22:58 2021, Load Address: 0x80001000, Entry Point: 0x80001000, Header CRC: 0xB38001C5, Data CRC: 0x402476AB

vs snapshot build:

u-boot legacy uImage, MIPS OpenWrt Linux-5.4.85, Linux/MIPS, OS Kernel Image (lzma), 2512013 bytes, Thu Dec 31 22:09:09 2020, Load Address: 0x80001000, Entry Point: 0x80001000, Header CRC: 0x43D6213D, Data CRC: 0x8CD79BE0

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openwrt-bot commented Jan 2, 2021

Borromini:

Looks like 8 MiB flash, how big is the kernel 'partition'? Or does mt7621 use a dynamic splitter?

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openwrt-bot commented Jan 2, 2021

bjonglez:

Yes it's a 8 MB flash device.

Good question. It looks dynamic to me:

0x000000000000-0x000000030000 : "u-boot"
0x000000030000-0x000000040000 : "u-boot-env"
0x000000040000-0x000000050000 : "factory"
0x000000050000-0x000000800000 : "firmware"
0x000000000000-0x00000024bbb0 : "kernel"
0x00000024bbb0-0x0000007b0000 : "rootfs"
0x0000004e0000-0x0000007b0000 : "rootfs_data"

0x24bbb0 = 2407344 (my kernel is 2407280)

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openwrt-bot commented Nov 28, 2021

dsouza:

(deleted)

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