ppc4xx: Fix 460EX errata with CPU lockup upon high AHB traffic

[oweals/u-boot.git] / cpu / ppc4xx / ecc.h

diff --git a/cpu/ppc4xx/ecc.h b/cpu/ppc4xx/ecc.h
index da1c4fda8a1f9d88e2897ade1c92bc3d2c900071..aecf291a8b623287232d06d36a74e61e8525e052 100644 (file)
--- a/cpu/ppc4xx/ecc.h
+++ b/cpu/ppc4xx/ecc.h
@@ -37,6 +37,33 @@
 #define        CFG_ECC_PATTERN 0x00000000
 #endif /* !defined(CFG_ECC_PATTERN) */
 
+/*
+ * Since the IBM DDR controller used on 440GP/GX/EP/GR is not register
+ * compatible to the IBM DDR/2 controller used on 405EX/440SP/SPe/460EX/GT
+ * we need to make some processor dependant defines used later on by the
+ * driver.
+ */
+
+/* For 440GP/GX/EP/GR */
+#if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR)
+#define SDRAM_ECC_CFG          SDRAM_CFG0
+#define SDRAM_ECC_CFG_MCHK_MASK        SDRAM_CFG0_MCHK_MASK
+#define SDRAM_ECC_CFG_MCHK_GEN SDRAM_CFG0_MCHK_GEN
+#define SDRAM_ECC_CFG_MCHK_CHK SDRAM_CFG0_MCHK_CHK
+#define SDRAM_ECC_CFG_DMWD_MASK        SDRAM_CFG0_DMWD_MASK
+#define SDRAM_ECC_CFG_DMWD_32  SDRAM_CFG0_DMWD_32
+#endif
+
+/* For 405EX/440SP/SPe/460EX/GT */
+#if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR2)
+#define SDRAM_ECC_CFG          SDRAM_MCOPT1
+#define SDRAM_ECC_CFG_MCHK_MASK        SDRAM_MCOPT1_MCHK_MASK
+#define SDRAM_ECC_CFG_MCHK_GEN SDRAM_MCOPT1_MCHK_GEN
+#define SDRAM_ECC_CFG_MCHK_CHK SDRAM_MCOPT1_MCHK_CHK
+#define SDRAM_ECC_CFG_DMWD_MASK        SDRAM_MCOPT1_DMWD_MASK
+#define SDRAM_ECC_CFG_DMWD_32  SDRAM_MCOPT1_DMWD_32
+#endif
+
 extern void ecc_init(unsigned long * const start, unsigned long size);
 
 #endif /* _ECC_H_ */