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authorEugene O'Brien <eugene.g.obrien@gmail.com>2010-02-24 14:10:24 -0500
committerStefan Roese <sr@denx.de>2010-03-02 14:12:52 +0100
commit87800f72414b830756aefc757dd191688febacf9 (patch)
treec28bcb5793b15efc3dbd6df3532a703af9aa807d
parentf3651764e57e353251695691677bd95ba5a420bc (diff)
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ppc4xx: Corrected EBC register bit definitions
Corrected the bit field positions of the external master priority low and the external master priority high values in the EBC configuration register. These bit field positions differ between PPC405 and PPC440 processors Signed-off-by: Eugene O'Brien <eugene.obrien@advantechamt.com> Signed-off-by: Stefan Roese <sr@denx.de>
-rw-r--r--include/asm-ppc/ppc4xx-ebc.h24
1 files changed, 18 insertions, 6 deletions
diff --git a/include/asm-ppc/ppc4xx-ebc.h b/include/asm-ppc/ppc4xx-ebc.h
index 9680f70..9c17e46 100644
--- a/include/asm-ppc/ppc4xx-ebc.h
+++ b/include/asm-ppc/ppc4xx-ebc.h
@@ -25,14 +25,24 @@
#define _PPC4xx_EBC_H_
/*
- * Currently there are two register layout versions for the
- * IBM EBC core used on 4xx PPC's:
+ * Currently there are two register layout versions for the IBM EBC core
+ * used on 4xx PPC's. The following grouping lists the first layout.
+ * Within this group there is a slight variation concerning the bit field
+ * position of the EMPL and EMPH fields:
*/
#if defined(CONFIG_405CR) || defined(CONFIG_405GP) || \
defined(CONFIG_405EP) || \
defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
#define CONFIG_EBC_PPC4xx_IBM_VER1
+#if defined(CONFIG_405CR) || defined(CONFIG_405GP) || \
+ defined(CONFIG_405EP)
+#define EBC_CFG_EMPH_POS 8
+#define EBC_CFG_EMPL_POS 6
+#else
+#define EBC_CFG_EMPH_POS 6
+#define EBC_CFG_EMPL_POS 8
+#endif
#endif
/*
@@ -143,10 +153,12 @@
#define EBC_CFG_EBTC_MASK PPC_REG_VAL(0, 0x1)
#define EBC_CFG_EBTC_HI PPC_REG_VAL(0, 0x0)
#define EBC_CFG_EBTC_DRIVEN PPC_REG_VAL(0, 0x1)
-#define EBC_CFG_EMPH_MASK PPC_REG_VAL(6, 0x3)
-#define EBC_CFG_EMPH_ENCODE(n) PPC_REG_VAL(6, (static_cast(u32, n)) & 0x3)
-#define EBC_CFG_EMPL_MASK PPC_REG_VAL(8, 0x3)
-#define EBC_CFG_EMPL_ENCODE(n) PPC_REG_VAL(8, (static_cast(u32, n)) & 0x3)
+#define EBC_CFG_EMPH_MASK PPC_REG_VAL(EBC_CFG_EMPH_POS, 0x3)
+#define EBC_CFG_EMPH_ENCODE(n) PPC_REG_VAL(EBC_CFG_EMPH_POS, \
+ (static_cast(u32, n)) & 0x3)
+#define EBC_CFG_EMPL_MASK PPC_REG_VAL(EBC_CFG_EMPL_POS, 0x3)
+#define EBC_CFG_EMPL_ENCODE(n) PPC_REG_VAL(EBC_CFG_EMPH_POS, \
+ (static_cast(u32, n)) & 0x3)
#define EBC_CFG_CSTC_MASK PPC_REG_VAL(9, 0x1)
#define EBC_CFG_CSTC_HI PPC_REG_VAL(9, 0x0)
#define EBC_CFG_CSTC_DRIVEN PPC_REG_VAL(9, 0x1)