armv8/fsl-lsch3: Convert flushing L3 to assembly to avoid using stack
Flushing L3 cache in CCN-504 requries d-cache to be disabled. Using
assembly function to guarantee stack is not used before flushing is
completed. Timeout is needed for simualtor on which CCN-504 is not
implemented. Return value can be checked for timeout situation.
Change bootm.c to disable dcache instead of simply flushing, required
by flushing L3.
Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 0c1298a..2d6b676 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -191,7 +191,7 @@
static void do_nonsec_virt_switch(void)
{
smp_kick_all_cpus();
- flush_dcache_all(); /* flush cache before swtiching to EL2 */
+ dcache_disable(); /* flush cache before swtiching to EL2 */
armv8_switch_to_el2();
#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
armv8_switch_to_el1();