Russell,
On 01/28/2011 08:10 AM, Russell King - ARM Linux wrote:
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?
Not on Thumb2:
arch/arm/kernel/head.S:218: Error: Thumb supports only LSL in shifted
register indexing -- `str r6,[r4,r3,lsr#18]'
Rob
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