From 42aee64bd95e91278cce6cfe1de8f1bfb2fd2005 Mon Sep 17 00:00:00 2001
From: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Date: Thu, 30 Jun 2011 03:00:28 -0500
Subject: [PATCH] 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>
---
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(+)
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index 7b9f77362c..446f7590a6 100644
--- 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 691c075582..f3346458f5 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 fb12363c88..7d95eb4416 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 */
--
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