[Pdbg] [PATCH v3 03/13] libpdbg/p9chip.c: use the OTR special wakeup status latch

Nicholas Piggin npiggin at gmail.com
Wed May 2 16:27:58 AEST 2018


Use this to poll for special wakeup done (like skiboot does with
the HYP register).

Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
---
 libpdbg/p9chip.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libpdbg/p9chip.c b/libpdbg/p9chip.c
index 85416ae..51d6db5 100644
--- a/libpdbg/p9chip.c
+++ b/libpdbg/p9chip.c
@@ -63,6 +63,7 @@
 #define NET_CTRL0_WOR	0xf0042
 #define PPM_GPMMR	0xf0100
 #define PPM_SPWKUP_OTR	0xf010a
+#define PPM_SSHOTR	0xf0113
 #define  SPECIAL_WKUP_DONE PPC_BIT(1)
 
 #define RAS_STATUS_TIMEOUT	100 /* 100ms */
@@ -315,7 +316,7 @@ static int p9_core_probe(struct pdbg_target *target)
 	CHECK_ERR(pib_write(target, PPM_SPWKUP_OTR, PPC_BIT(0)));
 	do {
 		usleep(1000);
-		CHECK_ERR(pib_read(target, PPM_GPMMR, &value));
+		CHECK_ERR(pib_read(target, PPM_SSHOTR, &value));
 
 		if (i++ > SPECIAL_WKUP_TIMEOUT) {
 			PR_ERROR("Timeout waiting for special wakeup on %s at 0x%08" PRIx64 "\n", target->name,
-- 
2.17.0



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