[rtems commit] bsp/qoriq: Set M and G bits in ENTRY_DEV_CACHED()
Sebastian Huber
sebh at rtems.org
Mon May 9 11:07:08 UTC 2016
Module: rtems
Branch: master
Commit: c70f9d19ee6dabe8f5373ec8bf0e36d25bd2429f
Changeset: http://git.rtems.org/rtems/commit/?id=c70f9d19ee6dabe8f5373ec8bf0e36d25bd2429f
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Thu Apr 28 10:19:54 2016 +0200
bsp/qoriq: Set M and G bits in ENTRY_DEV_CACHED()
Set M and G MMU attribute bits in ENTRY_DEV_CACHED().
---
c/src/lib/libbsp/powerpc/qoriq/startup/mmu-config.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/c/src/lib/libbsp/powerpc/qoriq/startup/mmu-config.c b/c/src/lib/libbsp/powerpc/qoriq/startup/mmu-config.c
index ceb64a6..414bcb4 100644
--- a/c/src/lib/libbsp/powerpc/qoriq/startup/mmu-config.c
+++ b/c/src/lib/libbsp/powerpc/qoriq/startup/mmu-config.c
@@ -78,10 +78,19 @@ typedef struct {
.mas7 = QORIQ_MMU_DEVICE_MAS7 \
}
+/*
+ * MMU entry for BMan and QMan software portals.
+ *
+ * The M bit must be set if stashing is used, see 3.3.8.6 DQRR Entry Stashing
+ * and 3.3.8 Software Portals in T4240DPAARM.
+ *
+ * The G bit must be set, otherwise ECC errors in the QMan software portals
+ * will occur. No documentation reference for this is available.
+ */
#define ENTRY_DEV_CACHED(b, s) { \
.begin = (uint32_t) b, \
.size = (uint32_t) s, \
- .mas2 = 0, \
+ .mas2 = FSL_EIS_MAS2_M | FSL_EIS_MAS2_G, \
.mas3 = FSL_EIS_MAS3_SR | FSL_EIS_MAS3_SW, \
.mas7 = QORIQ_MMU_DEVICE_MAS7 \
}
More information about the vc
mailing list