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authorDaniel Schwierzeck <daniel.schwierzeck@googlemail.com>2012-04-02 02:57:56 +0000
committerMarek Vasut <marex@denx.de>2012-04-02 15:54:53 +0200
commit6cb461b4f1531dbae5c0bae857f649b7943114ec (patch)
treebd8df91ecc1ebbd2d2cef76bfd1940b74e9920ee
parent979cfeaf36bf8719d4a1a98f1e8a3e16ef3d1fba (diff)
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MIPS: fix endianess handling
Make endianess of target CPU configurable. Use the new config option for dbau1550_el and pb1000 boards. Adapt linking of standalone applications to pass through endianess options to LD. Build tested with: - ELDK 4 mips_4KC- and mips4KCle - Sourcery CodeBench Lite 2011.03-93 With this patch all 26 MIPS boards can be compiled now in one step by running "MAKEALL -a mips". Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
-rw-r--r--README6
-rw-r--r--arch/mips/cpu/mips32/config.mk21
-rw-r--r--boards.cfg2
-rw-r--r--include/configs/pb1x00.h2
4 files changed, 24 insertions, 7 deletions
diff --git a/README b/README
index c98afa7..9702067 100644
--- a/README
+++ b/README
@@ -374,6 +374,12 @@ The following options need to be configured:
Defines the string to utilize when trying to match PCIe device
tree nodes for the given platform.
+- Generic CPU options:
+ CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN
+
+ Defines the endianess of the CPU. Implementation of those
+ values is arch specific.
+
- Intel Monahans options:
CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO
diff --git a/arch/mips/cpu/mips32/config.mk b/arch/mips/cpu/mips32/config.mk
index 4d1b273..a1cd590 100644
--- a/arch/mips/cpu/mips32/config.mk
+++ b/arch/mips/cpu/mips32/config.mk
@@ -27,14 +27,23 @@
# Note: Toolchains with binutils prior to v2.16
# are no longer supported by U-Boot MIPS tree!
#
-MIPSFLAGS = -march=mips32r2
+MIPSFLAGS := -march=mips32r2
+# Handle special prefix in ELDK 4.0 toolchain
ifneq (,$(findstring 4KCle,$(CROSS_COMPILE)))
-ENDIANNESS = -EL
-else
-ENDIANNESS = -EB
+ENDIANNESS := -EL
endif
-MIPSFLAGS += $(ENDIANNESS)
+ifdef CONFIG_SYS_LITTLE_ENDIAN
+ENDIANNESS := -EL
+endif
+
+ifdef CONFIG_SYS_BIG_ENDIAN
+ENDIANNESS := -EB
+endif
+
+# Default to EB if no endianess is configured
+ENDIANNESS ?= -EB
-PLATFORM_CPPFLAGS += $(MIPSFLAGS)
+PLATFORM_CPPFLAGS += $(MIPSFLAGS) $(ENDIANNESS)
+PLATFORM_LDFLAGS += $(ENDIANNESS)
diff --git a/boards.cfg b/boards.cfg
index c6090ba..3cf75c3 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -360,7 +360,7 @@ dbau1000 mips mips32 dbau1x00 -
dbau1100 mips mips32 dbau1x00 - au1x00 dbau1x00:DBAU1100
dbau1500 mips mips32 dbau1x00 - au1x00 dbau1x00:DBAU1500
dbau1550 mips mips32 dbau1x00 - au1x00 dbau1x00:DBAU1550
-dbau1550_el mips mips32 dbau1x00 - au1x00 dbau1x00:DBAU1550
+dbau1550_el mips mips32 dbau1x00 - au1x00 dbau1x00:DBAU1550,SYS_LITTLE_ENDIAN
gth2 mips mips32 - - au1x00
pb1000 mips mips32 pb1x00 - au1x00 pb1x00:PB1000
incaip mips mips32 incaip - incaip
diff --git a/include/configs/pb1x00.h b/include/configs/pb1x00.h
index eea8ed3..d056884 100644
--- a/include/configs/pb1x00.h
+++ b/include/configs/pb1x00.h
@@ -46,6 +46,8 @@
#endif
#endif
+#define CONFIG_SYS_LITTLE_ENDIAN
+
#define CONFIG_ETHADDR DE:AD:BE:EF:01:01 /* Ethernet address */
#define CONFIG_BOOTDELAY 2 /* autoboot after 2 seconds */