U-Boot v2 aka Barebox

Hi,

I wake-up agin this thread :)

Our design change, and now include a mmu support (instead mpu).

I update barebox config, add MMU support, but keep all previous settings.

Unfortnatly, barebox don't start anymore ( no console print, even with log level and early printf).

Other baremetal applications (MemTest...) from altera keep working, and linux manage to boot.

I try to trace it with gdb (via jtag cable). It keeps looping on arch/nios2/cpu/start.S, between "EXCEPTION TRAMPOLINE" and "initd 0(R6)"

	/* EXCEPTION TRAMPOLINE -- the following gets copied
	 * to the exception address (below), but is otherwise at the
	 * default exception vector offset (0x0020).
	 */
_except_start:
	movhi   et, %hi(_exception)
	ori     et, et, %lo(_exception)
	jmp     et
_except_end:
	/* INTERRUPTS -- for now, all interrupts masked and globally
	 * disabled.
	 */
	wrctl   ienable, r0  /* All disabled */
	/* DCACHE INIT -- if dcache not implemented, initd behaves as
	 * nop.
	 */
	movhi   r4, %hi(DCACHE_LINE_SIZE)
	ori     r4, r4, %lo(DCACHE_LINE_SIZE)
	movhi   r5, %hi(DCACHE_SIZE)
	ori     r5, r5, %lo(DCACHE_SIZE)
	mov     r6, r0
1:	initd   0(r6)   <-- When reach here, jump to _except_start
	add     r6, r6, r4
	bltu    r6, r5, 1b

Any idea or suggestions ?

Regards,

Christophe