2 * linux/arch/arm/boot/compressed/head-xscale.S
4 * XScale specific tweaks. This is merged into head.S by the linker.
8 #include <linux/linkage.h>
10 .section ".start", "ax"
14 @ Preserve r8/r7 i.e. kernel entry values
16 @ Data cache might be active.
17 @ Be sure to flush kernel binary out of the cache,
18 @ whatever state it is, before it is turned off.
19 @ This is done by fetching through currently executed
20 @ memory to be sure we hit the same cache.
22 add r3, r2, #0x10000 @ 64 kb is quite enough...
26 mcr p15, 0, r0, c7, c10, 4 @ drain WB
27 mcr p15, 0, r0, c7, c7, 0 @ flush I & D caches
29 @ disabling MMU and caches
30 mrc p15, 0, r0, c1, c0, 0 @ read control reg
31 bic r0, r0, #0x05 @ clear DC, MMU
32 bic r0, r0, #0x1000 @ clear Icache
33 mcr p15, 0, r0, c1, c0, 0
35 #ifdef CONFIG_ARCH_IXP2000