89b184f980
Whether xtensa cores start from primary or secondary reset vector is configurable and may be chosen by board designer or controlled at runtime. When secondary reset vector is unused its location in memory may not be writable. Make secondary reset vector support conditional and don't build and load secondary reset vector code when it is disabled. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
45 lines
1.8 KiB
Makefile
45 lines
1.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the Linux/Xtensa kernel.
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#
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extra-y := head.o vmlinux.lds
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obj-y := align.o coprocessor.o entry.o irq.o platform.o process.o \
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ptrace.o setup.o signal.o stacktrace.o syscall.o time.o traps.o \
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vectors.o
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obj-$(CONFIG_MMU) += pci-dma.o
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obj-$(CONFIG_PCI) += pci.o
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obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
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obj-$(CONFIG_FUNCTION_TRACER) += mcount.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_SECONDARY_RESET_VECTOR) += mxhead.o
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obj-$(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS) += perf_event.o
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obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
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obj-$(CONFIG_S32C1I_SELFTEST) += s32c1i_selftest.o
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obj-$(CONFIG_JUMP_LABEL) += jump_label.o
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# In the Xtensa architecture, assembly generates literals which must always
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# precede the L32R instruction with a relative offset less than 256 kB.
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# Therefore, the .text and .literal section must be combined in parenthesis
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# in the linker script, such as: *(.literal .text).
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#
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# We need to post-process the generated vmlinux.lds scripts to convert
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# *(xxx.text) to *(xxx.literal xxx.text) for the following text sections:
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# .text .ref.text .*init.text .*exit.text .text.*
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#
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# Replicate rules in scripts/Makefile.build
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sed-y = -e ':a; s/\*(\([^)]*\)\.text\.unlikely/*(\1.literal.unlikely .{text}.unlikely/; ta; ' \
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-e ':b; s/\*(\([^)]*\)\.text\(\.[a-z]*\)/*(\1.{text}\2.literal .{text}\2/; tb; ' \
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-e ':c; s/\*(\([^)]*\)\(\.[a-z]*it\|\.ref\)\.text/*(\1\2.literal \2.{text}/; tc; ' \
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-e ':d; s/\*(\([^)]\+ \|\)\.text/*(\1.literal .{text}/; td; ' \
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-e 's/\.{text}/.text/g'
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quiet_cmd__cpp_lds_S = LDS $@
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cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ \
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-DLINKER_SCRIPT $< | sed $(sed-y) >$@
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$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE
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$(call if_changed_dep,_cpp_lds_S)
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