bootstage: Require timer_get_boot_us() to be defined

At present we provide a default version of this function for use by
bootstage. However it uses the system timer and therefore likely requires
driver model. This makes it impossible to time driver-model init.

Drop the function and require boards to provide their own. Add a sandbox
version also. There is a default implememtation in lib/time.c for boards
which use CONFIG_SYS_TIMER_COUNTER.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c
index 3fe99b8..eefed2e 100644
--- a/arch/sandbox/cpu/cpu.c
+++ b/arch/sandbox/cpu/cpu.c
@@ -139,3 +139,14 @@ done:
 
 	return 0;
 }
+
+ulong timer_get_boot_us(void)
+{
+	static uint64_t base_count;
+	uint64_t count = os_get_nsec();
+
+	if (!base_count)
+		base_count = count;
+
+	return (count - base_count) / 1000;
+}