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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc 
 kernel/arch/mips/Makefile
....@@ -13,6 +13,10 @@
1313 #
1414 
1515 archscripts: scripts_basic
16
+	$(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
17
+ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
18
+	$(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
19
+endif
1620 	$(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
1721 
1822 KBUILD_DEFCONFIG := 32r2el_defconfig
....@@ -112,33 +116,8 @@
112116 
113117 cflags-y += -ffreestanding
114118 
115
-#
116
-# We explicitly add the endianness specifier if needed, this allows
117
-# to compile kernels with a toolchain for the other endianness. We
118
-# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
119
-# when fed the toolchain default!
120
-#
121
-# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
122
-# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
123
-# are used, so we kludge that here.  A bug has been filed at
124
-# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
125
-#
126
-# clang doesn't suffer from these issues and our checks against -dumpmachine
127
-# don't work so well when cross compiling, since without providing --target
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-# clang's output will be based upon the build machine. So for clang we simply
129
-# unconditionally specify -EB or -EL as appropriate.
130
-#
131
-ifeq ($(cc-name),clang)
132119 cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= -EB
133120 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -EL
134
-else
135
-undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
136
-undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
137
-predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
138
-predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
139
-cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
140
-cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
141
-endif
142121 
143122 cflags-$(CONFIG_SB1XXX_CORELIS)	+= $(call cc-option,-mno-sched-prolog) \
144123 				   -fno-omit-frame-pointer
....@@ -157,24 +136,43 @@
157136 #
158137 cflags-y += -fno-stack-check
159138 
139
+# binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
140
+# supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
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+# instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
142
+# for a description).
143
+#
144
+# We disable this in order to prevent the assembler meddling with the
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+# instruction that labels refer to, ie. if we label an ll instruction:
146
+#
147
+# 1: ll v0, 0(a0)
148
+#
149
+# ...then with the assembler fix applied the label may actually point at a sync
150
+# instruction inserted by the assembler, and if we were using the label in an
151
+# exception table the table would no longer contain the address of the ll
152
+# instruction.
153
+#
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+# Avoid this by explicitly disabling that assembler behaviour.
155
+#
156
+cflags-y += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
157
+
160158 #
161159 # CPU-dependent compiler/assembler options for optimization.
162160 #
163161 cflags-$(CONFIG_CPU_R3000)	+= -march=r3000
164162 cflags-$(CONFIG_CPU_TX39XX)	+= -march=r3900
165
-cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap
166163 cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap
167164 cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
168165 cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
169166 cflags-$(CONFIG_CPU_MIPS32_R1)	+= -march=mips32 -Wa,--trap
170167 cflags-$(CONFIG_CPU_MIPS32_R2)	+= -march=mips32r2 -Wa,--trap
168
+cflags-$(CONFIG_CPU_MIPS32_R5)	+= -march=mips32r5 -Wa,--trap -modd-spreg
171169 cflags-$(CONFIG_CPU_MIPS32_R6)	+= -march=mips32r6 -Wa,--trap -modd-spreg
172170 cflags-$(CONFIG_CPU_MIPS64_R1)	+= -march=mips64 -Wa,--trap
173171 cflags-$(CONFIG_CPU_MIPS64_R2)	+= -march=mips64r2 -Wa,--trap
172
+cflags-$(CONFIG_CPU_MIPS64_R5)	+= -march=mips64r5 -Wa,--trap
174173 cflags-$(CONFIG_CPU_MIPS64_R6)	+= -march=mips64r6 -Wa,--trap
174
+cflags-$(CONFIG_CPU_P5600)	+= -march=p5600 -Wa,--trap -modd-spreg
175175 cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
176
-cflags-$(CONFIG_CPU_R5432)	+= $(call cc-option,-march=r5400,-march=r5000) \
177
-			-Wa,--trap
178176 cflags-$(CONFIG_CPU_R5500)	+= $(call cc-option,-march=r5500,-march=r5000) \
179177 			-Wa,--trap
180178 cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-option,-march=rm5200,-march=r5000) \
....@@ -185,7 +183,6 @@
185183 			-Wa,--trap
186184 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mdmx)
187185 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mips3d)
188
-cflags-$(CONFIG_CPU_R8000)	+= -march=r8000 -Wa,--trap
189186 cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \
190187 			-Wa,--trap
191188 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
....@@ -231,6 +228,10 @@
231228 cflags-$(toolchain-xpa)			+= -DTOOLCHAIN_SUPPORTS_XPA
232229 toolchain-crc				:= $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
233230 cflags-$(toolchain-crc)			+= -DTOOLCHAIN_SUPPORTS_CRC
231
+toolchain-dsp				:= $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
232
+cflags-$(toolchain-dsp)			+= -DTOOLCHAIN_SUPPORTS_DSP
233
+toolchain-ginv				:= $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
234
+cflags-$(toolchain-ginv)		+= -DTOOLCHAIN_SUPPORTS_GINV
234235 
235236 #
236237 # Firmware support
....@@ -258,13 +259,7 @@
258259 load-y					= $(CONFIG_PHYSICAL_START)
259260 endif
260261 
261
-# Sign-extend the entry point to 64 bits if retrieved as a 32-bit number.
262
-entry-y		= $(shell $(OBJDUMP) -f vmlinux 2>/dev/null \
263
-			| sed -n '/^start address / { \
264
-				s/^.* //; \
265
-				s/0x\([0-7].......\)$$/0x00000000\1/; \
266
-				s/0x\(........\)$$/0xffffffff\1/; p }')
267
-
262
+entry-y				= $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
268263 cflags-y			+= -I$(srctree)/arch/mips/include/asm/mach-generic
269264 drivers-$(CONFIG_PCI)		+= arch/mips/pci/
270265 
....@@ -334,7 +329,7 @@
334329 head-y := arch/mips/kernel/head.o
335330 
336331 libs-y			+= arch/mips/lib/
337
-libs-y			+= arch/mips/math-emu/
332
+libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
338333 
339334 # See arch/mips/Kbuild for content of core part of the kernel
340335 core-y += arch/mips/
....@@ -370,12 +365,6 @@
370365 bootz-y			+= vmlinuz.srec
371366 ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
372367 bootz-y			+= uzImage.bin
373
-endif
374
-
375
-ifdef CONFIG_LASAT
376
-rom.bin rom.sw: vmlinux
377
-	$(Q)$(MAKE) $(build)=arch/mips/lasat/image \
378
-		$(bootvars-y) $@
379368 endif
380369 
381370 #
....@@ -419,18 +408,7 @@
419408 CLEAN_FILES += vmlinux.32 vmlinux.64
420409 
421410 # device-trees
422
-core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
423
-
424
-%.dtb %.dtb.S %.dtb.o: | scripts
425
-	$(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
426
-
427
-PHONY += dtbs
428
-dtbs: scripts
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-	$(Q)$(MAKE) $(build)=arch/mips/boot/dts
430
-
431
-PHONY += dtbs_install
432
-dtbs_install:
433
-	$(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
411
+core-y += arch/mips/boot/dts/
434412 
435413 archprepare:
436414 ifdef CONFIG_MIPS32_N32
....@@ -454,7 +432,9 @@
454432 	$(Q)$(MAKE) $(clean)=arch/mips/boot
455433 	$(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
456434 	$(Q)$(MAKE) $(clean)=arch/mips/boot/tools
457
-	$(Q)$(MAKE) $(clean)=arch/mips/lasat
435
+
436
+archheaders:
437
+	$(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
458438 
459439 define archhelp
460440 	echo '  install              - install kernel into $(INSTALL_PATH)'
....@@ -473,8 +453,6 @@
473453 	echo '  uImage.lzma          - U-Boot image (lzma)'
474454 	echo '  uImage.lzo           - U-Boot image (lzo)'
475455 	echo '  uzImage.bin          - U-Boot image (self-extracting)'
476
-	echo '  dtbs                 - Device-tree blobs for enabled boards'
477
-	echo '  dtbs_install         - Install dtbs to $(INSTALL_DTBS_PATH)'
478456 	echo
479457 	echo '  These will be default as appropriate for a configured platform.'
480458 	echo