Boot up & soft reboot Problems enabling & disabling MMU Discontiguous Memory

[Ricardo Mart�nez]

Hi all

We have an ARM926ej based custom board with 32MB of discontiguous DDRII RAM.
Memory MAP is 0 to 8M, 16 to 24M, 32 to 40M and 48 to 56Megabytes.

Everything works perfectly (Linux boot) but sometimes, when we soft reboot
(kernel_restart()) system hangs in two different places randomly:
-   Switching off MMU in cpu_arm926_reset() in proc-arm926.S
-   Switching ON MMU in head.S __turn_mmu_on.

Linux version is 2.6.18 (I know it is quite out-of-date, but can't upgrade
due to some annoying & not linux issues). I was wondering if someone has
experienced this problems and mainly if this can be caused because of
DISCONTIGUOUS memory map.

Thanks in advance
Ricardo
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