From: Will Deacon will.deacon@arm.com
We need to set the flags when checking the feature register.
Signed-off-by: Will Deacon will.deacon@arm.com ---
I found this patch in another fork of the bootwrapper and it looks like something we should have. On the A15 and big.LITTLE setups I've tested it makes no difference so I guess the z flag was already clear or the architected timers are already running at 24MHz.
boot.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/boot.S b/boot.S index 40ebd33..dd453e3 100644 --- a/boot.S +++ b/boot.S @@ -78,7 +78,7 @@ start: @ mrc p15, 0, r0, c0, c1, 1 @ CPUID_EXT_PFR1 lsr r0, r0, #16 - and r0, r0, #1 @ Check generic timer support + ands r0, r0, #1 @ Check generic timer support beq 1f ldr r0, =24000000 @ 24MHz timer frequency mcr p15, 0, r0, c14, c0, 0 @ CNTFRQ