fsl_ifc: Add the workaround for erratum IFC-A002769 (enable on P1010)

Issue:
The NOR-FCM does not support access to unaligned addresses for 16 bit port size

Impact:
When 16 bit port size is used, accesses not aligned to 16 bit address boundary
will result in incorrect data

Workaround:
The workaround is to switch to GPCM mode for NOR Flash access.

Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index 7b9f77362c4af7f7e2f6ad3f69a30c7d39ff92c5..446f7590a6c20b5e06b57a30b527f12f692b6b4b 100644 (file)
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -86,6 +86,9 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134
        puts("Work-around for Erratum DDR111 enabled\n");
        puts("Work-around for Erratum DDR134 enabled\n");
+#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_IFC_A002769
+       puts("Work-around for Erratum IFC-A002769 enabled\n");
 #endif
        return 0;
 }

diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 691c075582a4de5b1f9ff4fe5fde19a26d9b5da9..f3346458f5150ce00e24eca57a4431096e54d70b 100644 (file)
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -112,6 +112,7 @@
 #define CONFIG_SYS_CCSRBAR_DEFAULT     0xff700000
 #define CONFIG_SYS_FSL_PCIE_COMPAT     "fsl,qoriq-pcie-v2.2"
 #define CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
+#define CONFIG_SYS_FSL_ERRATUM_IFC_A002769
 
 /* P1011 is single core version of P1020 */
 #elif defined(CONFIG_P1011)
@@ -160,6 +161,7 @@
 #define CONFIG_NUM_DDR_CONTROLLERS     1
 #define CONFIG_SYS_CCSRBAR_DEFAULT     0xff700000
 #define CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
+#define CONFIG_SYS_FSL_ERRATUM_IFC_A002769
 
 /* P1015 is single core version of P1024 */
 #elif defined(CONFIG_P1015)

diff --git a/arch/powerpc/include/asm/fsl_ifc.h b/arch/powerpc/include/asm/fsl_ifc.h
index fb12363c881095b87dfadcd900ff2fe639fb18c6..7d95eb4416a894fb38e571ade4e4992ec1e69a7e 100644 (file)
--- a/arch/powerpc/include/asm/fsl_ifc.h
+++ b/arch/powerpc/include/asm/fsl_ifc.h
@@ -951,5 +951,10 @@ struct fsl_ifc {
        struct fsl_ifc_gpcm ifc_gpcm;
 };
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_IFC_A002769
+#undef CSPR_MSEL_NOR
+#define CSPR_MSEL_NOR  CSPR_MSEL_GPCM
+#endif
+
 #endif /* __ASSEMBLY__ */
 #endif /* __ASM_PPC_FSL_IFC_H */