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MIPS: fix endianess handling

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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>
This commit is contained in:
Daniel Schwierzeck 2012-04-02 02:57:56 +00:00 committed by Marek Vasut
parent 979cfeaf36
commit 6cb461b4f1
4 changed files with 24 additions and 7 deletions
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6
README
View file

@ -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

21
arch/mips/cpu/mips32/config.mk
View file

@ -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
PLATFORM_CPPFLAGS += $(MIPSFLAGS)
ifdef CONFIG_SYS_BIG_ENDIAN
ENDIANNESS := -EB
endif
# Default to EB if no endianess is configured
ENDIANNESS ?= -EB
PLATFORM_CPPFLAGS += $(MIPSFLAGS) $(ENDIANNESS)
PLATFORM_LDFLAGS += $(ENDIANNESS)

2
boards.cfg
View file

@ -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

2
include/configs/pb1x00.h
View file

@ -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 */