1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994, 95, 96, 2003 by Ralf Baechle
# DECStation modifications by Paul M. Antoine, 1996
# Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" cleaning up for this architecture.
#
#
# Select the object file format to substitute into the linker script.
#
ifdef CONFIG_CPU_LITTLE_ENDIAN
32bit-bfd = elf32-tradlittlemips
32bit-emul = elf32ltsmip
else
32bit-bfd = elf32-tradbigmips
32bit-emul = elf32btsmip
endif
CROSS_COMPILE := rsdk-linux-
UTS_MACHINE := rlx
ld-emul = $(32bit-emul)
vmlinux-32 = vmlinux
cflags-y := -ffunction-sections
cflags-y += $(call cc-option, -mno-check-zero-division)
cflags-y += -mabi=32
#
# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
# code since it only slows down the whole thing. At some point we might make
# use of global pointer optimizations but their use of $28 conflicts with
# the current pointer optimization.
#
cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
cflags-y += -msoft-float
LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
MODFLAGS += -mlong-calls
cflags-y += -ffreestanding
#
# We explicitly add the endianness specifier if needed, this allows
# to compile kernels with a toolchain for the other endianness. We
# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
# when fed the toolchain default!
#
# Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of
# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
# are used, so we kludge that here. A bug has been filed at
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
#
undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB $(undef-all) $(predef-be)
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL $(undef-all) $(predef-le)
#
# BSP Makefile
#
include arch/rlx/bsp/Makefile
cflags-y += -I$(srctree)/arch/rlx/include/asm/mach-generic
drivers-$(CONFIG_PCI) += arch/rlx/pci/
ifdef CONFIG_CPU_LITTLE_ENDIAN
JIFFIES = jiffies_64
else
JIFFIES = jiffies_64 + 4
endif
#
# Automatically detect the build format. By default we choose
# the elf format according to the load address.
# We can always force a build with a 64-bits symbol format by
# passing 'KBUILD_SYM32=no' option to the make's command line.
#
KBUILD_AFLAGS += $(cflags-y)
KBUILD_CFLAGS += $(cflags-y) \
-D"VMLINUX_LOAD_ADDRESS=$(load-y)"
LDFLAGS += -m $(ld-emul)
CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \
egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/")
OBJCOPYFLAGS += --remove-section=.reginfo
#
# Choosing incompatible machines durings configuration will result in
# error messages during linking. Select a default linkscript if
# none has been choosen above.
#
CPPFLAGS_vmlinux.lds := \
$(KBUILD_CFLAGS) \
-D"LOADADDR=$(load-y)" \
-D"JIFFIES=$(JIFFIES)" \
-D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)" \
-D"ZZ_DRAMSIZE_ZZ=8k" \
-D"ZZ_IRAMSIZE_ZZ=8k" \
-D"ZZ_L2RAMSIZE_ZZ=32k"
head-y := arch/rlx/kernel/head.o arch/rlx/kernel/init_task.o
libs-y += arch/rlx/lib/ # Library support
#libs-y += arch/rlx/fw/lib/ # Firmware support
core-y += arch/rlx/kernel/ arch/rlx/mm/
drivers-$(CONFIG_OPROFILE) += arch/rlx/oprofile/
#
# Targets
#
vmlinux.32: vmlinux
$(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
makeboot =$(Q)$(MAKE) $(build)=arch/rlx/boot VMLINUX=$(vmlinux-32) $(1)
all: vmlinux.32
vmlinux.bin: $(vmlinux-32)
+@$(call makeboot,$@)
archprepare:
#ifdef CONFIG_MIPS32_O32
# @echo ' Checking missing-syscalls for O32'
# $(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=32"
#endif
install:
$(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
archclean:
@$(MAKE) $(clean)=arch/rlx/boot
define archhelp
echo ' install - install kernel into $(INSTALL_PATH)'
echo ' vmlinux.ecoff - ECOFF boot image'
echo ' vmlinux.bin - Raw binary boot image'
echo ' vmlinux.srec - SREC boot image'
echo
echo ' These will be default as apropriate for a configured platform.'
endef
CLEAN_FILES += vmlinux.32 vmlinux.bin
|
