Commit 7038220a authored by David Howells's avatar David Howells Committed by Linus Torvalds
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FRV: permit the memory to be located elsewhere in NOMMU mode 



Permit the memory to be located somewhere other than address 0xC0000000 in
NOMMU mode.  The configuration options are already present, it just
requires wiring up in the linker script.

Note that only a limited set of locations of runtime addresses are available
because of the way the CPU protection registers work.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e114e473

arch/frv/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -138,6 +138,15 @@ config UCPAGE_OFFSET_C0000000 


endchoice



config PAGE_OFFSET

	hex

	default 0x20000000 if UCPAGE_OFFSET_20000000

	default 0x40000000 if UCPAGE_OFFSET_40000000

	default 0x60000000 if UCPAGE_OFFSET_60000000

	default 0x80000000 if UCPAGE_OFFSET_80000000

	default 0xA0000000 if UCPAGE_OFFSET_A0000000

	default 0xC0000000



config PROTECT_KERNEL

	bool "Protect core kernel against userspace"

	depends on !MMU

arch/frv/kernel/vmlinux.lds.S

+1 −1
Original line number Diff line number Diff line
@@ -13,7 +13,7 @@ ENTRY(_start) 


jiffies = jiffies_64 + 4;



__page_offset = 0xc0000000;		/* start of area covered by struct pages */

__page_offset = CONFIG_PAGE_OFFSET;	/* start of area covered by struct pages */

__kernel_image_start = __page_offset;	/* address at which kernel image resides */



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