Russell,
On 01/27/2011 10:31 AM, Russell King - ARM Linux wrote:
On Thu, Jan 27, 2011 at 09:50:43AM -0600, Rob Herring wrote:
+ /*
+ * Otherwise map the 1MB region r2 points to (atags or dtb)
+ */
+1: mov r0, r2, lsr #20
+ mov r0, r0, lsl #20
+ sub r3, r0, #(PHYS_OFFSET& 0xff000000)
+ .if (PHYS_OFFSET& 0x00f00000)
+ sub r3, r3, #(PHYS_OFFSET& 0x00f00000)
This introduces new PHYS_OFFSET uses which we're trying hard to get
rid of. This will need to be reworked.
Yeah, I didn't really like that either. How about this? It's untested.
It replaces the whole section mapping the 1st 1MB and should make
replacing this instance of PHYS_OFFSET with a variable easier.
/*
* Then map boot params address in r2 or
* the first 1MB of ram if boot params address is not specified.
*/
ldr r3, =PHYS_OFFSET
mov r0, r2, lsr #20
movs r0, r0, lsl #20
moveq r0, r3
sub r3, r0, r3
add r3, r3, #PAGE_OFFSET
add r3, r4, r3, lsr #18
orr r6, r7, r0
str r6, [r3]
Rob
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