[ARM] 4227/1: minor head.S fixups

Let's surround constructs like:

	orr	r3, r3, #(KERNEL_RAM_PADDR & 0x00f00000)

between .if .endif since (KERNEL_RAM_PADDR & 0x00f00000) is 0 in 99% of
all cases.

Also let's mask PHYS_OFFSET with 0x00f00000 instead of 0x00e00000.
Section mappings are really 1MB not 2MB and the 2MB groupping is
a higher level issue already much better enforced with

#if (PHYS_OFFSET & 0x001fffff)
#error "PHYS_OFFSET must be at an even 2MiB boundary!"
#endif

at the top of the file.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 66db0a9bf0bcfb40c6a4834721d2fc17f4872689..1d35edacc01113af898946e8d5b33f4b7a0dc17d 100644 (file)
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -257,7 +257,9 @@ __create_page_tables:
         * Map some ram to cover our .data and .bss areas.
         */
        orr     r3, r7, #(KERNEL_RAM_PADDR & 0xff000000)
+       .if     (KERNEL_RAM_PADDR & 0x00f00000)
        orr     r3, r3, #(KERNEL_RAM_PADDR & 0x00f00000)
+       .endif
        add     r0, r4,  #(KERNEL_RAM_VADDR & 0xff000000) >> 18
        str     r3, [r0, #(KERNEL_RAM_VADDR & 0x00f00000) >> 18]!
        ldr     r6, =(_end - 1)
@@ -274,7 +276,9 @@ __create_page_tables:
         */
        add     r0, r4, #PAGE_OFFSET >> 18
        orr     r6, r7, #(PHYS_OFFSET & 0xff000000)
-       orr     r6, r6, #(PHYS_OFFSET & 0x00e00000)
+       .if     (PHYS_OFFSET & 0x00f00000)
+       orr     r6, r6, #(PHYS_OFFSET & 0x00f00000)
+       .endif
        str     r6, [r0]
 
 #ifdef CONFIG_DEBUG_LL