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-rw-r--r--arch/microblaze/Makefile69
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
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1UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
2
3# What CPU vesion are we building for, and crack it open
4# as major.minor.rev
5CPU_VER=$(subst ",,$(CONFIG_XILINX_MICROBLAZE0_HW_VER) )
6CPU_MAJOR=$(shell echo $(CPU_VER) | cut -d '.' -f 1)
7CPU_MINOR=$(shell echo $(CPU_VER) | cut -d '.' -f 2)
8CPU_REV=$(shell echo $(CPU_VER) | cut -d '.' -f 3)
9
10export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
11
12# Use cpu-related CONFIG_ vars to set compile options.
13
14# Work out HW multipler support. This is icky.
15# 1. Spartan2 has no HW multiplers.
16# 2. MicroBlaze v3.x always uses them, except in Spartan 2
17# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
18ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
19 ifeq ($(CPU_MAJOR),3)
20 CPUFLAGS-1 += -mno-xl-soft-mul
21 else
22 # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
23 CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
24 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
25 endif
26endif
27CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
28CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
29CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP) += -mxl-pattern-compare
30
31CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
32
33# The various CONFIG_XILINX cpu features options are integers 0/1/2...
34# rather than bools y/n
35CFLAGS += $(CPUFLAGS-1)
36CFLAGS += $(CPUFLAGS-2)
37
38# r31 holds current when in kernel mode
39CFLAGS += -ffixed-r31
40
41LDFLAGS_BLOB := --format binary --oformat elf32-microblaze
42
43LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
44
45head-y := arch/microblaze/kernel/head.o
46libs-y += arch/microblaze/lib/ $(LIBGCC)
47core-y += arch/microblaze/kernel/ arch/microblaze/mm/ \
48 arch/microblaze/platform/
49
50boot := arch/$(ARCH)/boot
51
52# defines filename extension depending memory management type
53ifeq ($(CONFIG_MMU),)
54MMUEXT := -nommu
55endif
56export MMUEXT
57
58all: linux.bin
59
60archclean:
61 $(Q)$(MAKE) $(clean)=$(boot)
62
63linux.bin linux.bin.gz: vmlinux
64 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
65
66define archhelp
67 echo '* linux.bin - Create raw binary'
68 echo ' linux.bin.gz - Create compressed raw binary'
69endef