[U-Boot] [PATCH 5/7][v2] fsl_ifc: Add the workaround for erratum IFC-A002769 (enable on P1010)
Kumar Gala
galak at kernel.crashing.org
Fri Aug 5 16:44:38 CEST 2011
From: Poonam Aggrwal <poonam.aggrwal at freescale.com>
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 at freescale.com>
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
arch/powerpc/cpu/mpc85xx/cmd_errata.c | 3 +++
arch/powerpc/include/asm/config_mpc85xx.h | 2 ++
arch/powerpc/include/asm/fsl_ifc.h | 5 +++++
3 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index 7b9f773..446f759 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -87,6 +87,9 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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 691c075..f334645 100644
--- 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 fb12363..7d95eb4 100644
--- 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 */
--
1.7.3.4
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