fix(intel): missing NCORE CCU snoop filter fix in BL2
Clear Ncore CCU snoop filter. There is hardware bug in NCORE CCU IP
and it is causing an issue in the coherent directory tracking of
outstanding cache lines.
Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
Change-Id: I9ee67c94e6379d318516ae8f660a62323ce8d563
diff --git a/plat/intel/soc/common/drivers/ccu/ncore_ccu.c b/plat/intel/soc/common/drivers/ccu/ncore_ccu.c
index d9a238e..99d48d2 100644
--- a/plat/intel/soc/common/drivers/ccu/ncore_ccu.c
+++ b/plat/intel/soc/common/drivers/ccu/ncore_ccu.c
@@ -40,7 +40,7 @@
dir_sf_en = DIRECTORY_UNIT(dir, NCORE_DIRUSFER);
/* Initialize All Entries */
- mmio_write_32(dir_sf_mtn, SNOOP_FILTER_ID(dir));
+ mmio_write_32(dir_sf_mtn, SNOOP_FILTER_ID(sf));
/* Poll Active Bit */
ret = poll_active_bit(dir);
@@ -49,8 +49,9 @@
return -ETIMEDOUT;
}
- /* Snoope Filter Enable */
- mmio_setbits_32(dir_sf_en, BIT(sf));
+ /* Disable snoop filter, a bit per snoop filter */
+ mmio_clrbits_32(dir_sf_en, BIT(sf));
+
}
}