From mboxrd@z Thu Jan 1 00:00:00 1970 From: chanho61.park@samsung.com (Chanho Park) Date: Fri, 28 Mar 2014 16:15:28 +0900 Subject: disabling MMU of ARMv7-A Message-ID: <015e01cf4a55$7f43a950$7dcafbf0$@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi all, I want to know is there anyone who tried disabling MMU of ARMv7-A likes cortex-a9. Yes. I know this is a silly question :) I turned off CONFIG_MMU option of my exynos4 board and specified CONFIG_DRAM_BASE/SIZE and REMAP_VECTORS_TO_RAM. The problem is occurred in here there is no way to specify the vector table address. As I know the cortex-M3/4 has VTOR(Vector table offset register) to specify the vector table address. However, ARMv7-A/R doesn't have such register. They can only control whether use _HIGH_ vector or not. In this situation, can I find a way to boot successfully with nommu+cortex-a9? Thanks. Best Regards, Chanho Park