[varu]

The above turned out to be a deceptively easy fix: dump all the initramfs files in a folder, change initramfs.list locations to match, and voila.

Next up:

  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
arch/arm/mach-mx6/built-in.o: In function `arch_idle_single_core':
usb_h1.c:(.text+0x874): undefined reference to `wdg_prep'
arch/arm/mach-mx6/built-in.o: In function `reduce_bus_freq':
usb_h1.c:(.text+0xfd0): undefined reference to `wdg_prep'
usb_h1.c:(.text+0x111c): undefined reference to `wdg_prep'
arch/arm/mach-mx6/built-in.o: In function `set_high_bus_freq':
usb_h1.c:(.text+0x13f0): undefined reference to `wdg_prep'
make: *** [.tmp_vmlinux1] Error 1

That references the watchdog, the function is imx2_wdt.c, which is being loaded:

cat .config | grep WDT
CONFIG_IMX_HAVE_PLATFORM_IMX2_WDT=y
CONFIG_IMX2_WDT=y

wdg_prep is a LAB126-specific option:

#ifdef LAB126

void wdg_prep(){
	imx2_wdt_ping();
}

#endif

.. which should also be enabled:

cat .config | grep LAB126
CONFIG_LAB126_PRINTK_BUFFER=y
CONFIG_LAB126=y

Now I'm stumped