[PATCH v2] ARM: map ATAGs when not in first 1MB of RAM
Russell King - ARM Linux
linux at arm.linux.org.uk
Sat Jan 29 01:10:32 EST 2011
On Fri, Jan 28, 2011 at 08:00:46AM -0600, Rob Herring wrote:
> @@ -206,11 +206,17 @@ __create_page_tables:
> #endif
>
> /*
> - * Then map first 1MB of ram in case it contains our boot params.
> + * Then map boot params address in r2 or
> + * the first 1MB of ram if boot params address is not specified.
> */
> - add r0, r4, #PAGE_OFFSET >> 18
> - orr r6, r7, r8
> - str r6, [r0]
> + mov r0, r2, lsr #20
> + movs r0, r0, lsl #20
> + moveq r0, r8
> + sub r3, r0, r8
> + add r3, r3, #PAGE_OFFSET
> + add r3, r4, r3, lsr #18
> + orr r6, r7, r0
> + str r6, [r3]
Wouldn't:
str r6, [r4, r3, lsr #18]
work here?
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