CoreNet Platform Cache single-bit data error scrubbing will cause data
corruption. Disable the feature to workaround the issue.
Signed-off-by: Kumar Gala ga...@kernel.crashing.org
---
arch/powerpc/cpu/mpc85xx/cmd_errata.c |3 +++
arch/powerpc/cpu/mpc85xx/cpu_init.c |3 +++
arch/powerpc/include/asm/immap_85xx.h |1 +
include/configs/P4080DS.h |1 +
4 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index 3822cf0..e44a38f 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -65,6 +65,9 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002
puts(Work-around for Erratum CPC-A002 enabled\n);
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A003
+ puts(Work-around for Erratum CPC-A003 enabled\n);
+#endif
return 0;
}
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c
b/arch/powerpc/cpu/mpc85xx/cpu_init.c
index c822d87..8ece970 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c
@@ -145,6 +145,9 @@ static void enable_cpc(void)
#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002
setbits_be32(cpc-cpchdbcr0, CPC_HDBCR0_TAG_ECC_SCRUB_DIS);
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A003
+ setbits_be32(cpc-cpchdbcr0, CPC_HDBCR0_DATA_ECC_SCRUB_DIS);
+#endif
out_be32(cpc-cpccsr0, CPC_CSR0_CE | CPC_CSR0_PE);
/* Read back to sync write */
diff --git a/arch/powerpc/include/asm/immap_85xx.h
b/arch/powerpc/include/asm/immap_85xx.h
index ed36290..133b31f 100644
--- a/arch/powerpc/include/asm/immap_85xx.h
+++ b/arch/powerpc/include/asm/immap_85xx.h
@@ -1603,6 +1603,7 @@ typedef struct cpc_corenet {
#defineCPC_ERRDIS_TMHITDIS 0x0080 /* multi-way hit
disable */
#define CPC_HDBCR0_CDQ_SPEC_DIS0x0800
#define CPC_HDBCR0_TAG_ECC_SCRUB_DIS 0x0100
+#define CPC_HDBCR0_DATA_ECC_SCRUB_DIS 0x0040
#endif /* CONFIG_SYS_FSL_CPC */
/* Global Utilities Block */
diff --git a/include/configs/P4080DS.h b/include/configs/P4080DS.h
index c269ddc..216f6fb 100644
--- a/include/configs/P4080DS.h
+++ b/include/configs/P4080DS.h
@@ -41,6 +41,7 @@
#define CONFIG_SYS_P4080_ERRATUM_CPU22
#define CONFIG_SYS_FSL_ERRATUM_CPC_A002
+#define CONFIG_SYS_FSL_ERRATUM_CPC_A003
#define CONFIG_SYS_P4080_ERRATUM_SERDES8
#define CONFIG_SYS_FSL_ERRATUM_DDR_A003
--
1.7.2.3
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