[coreboot-gerrit] New patch to review for coreboot: libpayload: Get current tick from high register in generic timer

[Paul Kocialkowski]

Paul Kocialkowski ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17929

-gerrit

commit a7b719c5eb657ec541575c9ab05888d888205ff1
Author: Paul Kocialkowski 
Date:   Mon Dec 19 19:22:39 2016 +0100

libpayload: Get current tick from high register in generic timer

This fixes the generic timer driver to get the current tick from the
    high register, so that comparison with the high count value (obtained
    previously from the same register) has a chance to succeed.

Change-Id: I5ce02bfa15a91ad34641b8e24813a5b7ca790ec3
    Signed-off-by: Paul Kocialkowski 
---
 payloads/libpayload/drivers/timer/generic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/payloads/libpayload/drivers/timer/generic.c b/payloads/libpayload/drivers/timer/generic.c
index 4c06618..ac26f40 100644
--- a/payloads/libpayload/drivers/timer/generic.c
+++ b/payloads/libpayload/drivers/timer/generic.c
@@ -53,7 +53,7 @@ uint64_t timer_raw_value(void)
    do {
    	count_h = readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_HIGH_REG));
    	count_l = readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_REG));
-		cur_tick = readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_REG));
+		cur_tick = readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_HIGH_REG));
    } while (cur_tick != count_h);

return (cur_tick << 32) + count_l;