The sunxi DRAM setup code needs an sdelay() implementation, which wasn't defined for armv8 so far. Shamelessly copy the armv7 version and adjust it to work in AArch64.
Signed-off-by: Andre Przywara andre.przywara@arm.com --- arch/arm/cpu/armv8/cpu.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/arch/arm/cpu/armv8/cpu.c b/arch/arm/cpu/armv8/cpu.c index e06c3cc..0366ff4 100644 --- a/arch/arm/cpu/armv8/cpu.c +++ b/arch/arm/cpu/armv8/cpu.c @@ -16,6 +16,19 @@ #include <asm/system.h> #include <linux/compiler.h>
+/************************************************************ + * sdelay() - simple spin loop. Will be constant time as + * its generally used in bypass conditions only. This + * is necessary until timers are accessible. + * + * not inline to increase chances its in cache when called + *************************************************************/ +void sdelay(unsigned long loops) +{ + __asm__ volatile ("1:\n" "subs %0, %0, #1\n" + "b.ne 1b" : "=r" (loops) : "0"(loops) : "cc"); +} + int cleanup_before_linux(void) { /*