kernel.git/arch/xtensa/Makefile, branch linux-5.16.y

kbuild: use more subdir- for visiting subdirectories while cleaning

2021-10-24T04:49:46Z

Documentation/kbuild/makefiles.rst suggests to use "archclean" for cleaning arch/$(SRCARCH)/boot/, but it is not a hard requirement. Since commit d92cc4d51643 ("kbuild: require all architectures to have arch/$(SRCARCH)/Kbuild"), we can use the "subdir- += boot" trick for all architectures. This can take advantage of the parallel option (-j) for "make clean". I also cleaned up the comments in arch/$(SRCARCH)/Makefile. The "archdep" target no longer exists. Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook Acked-by: Geert Uytterhoeven Acked-by: Michael Ellerman (powerpc)

xtensa: move core-y in arch/xtensa/Makefile to arch/xtensa/Kbuild

2021-08-11T18:37:13Z

Use obj-y to clean up Makefile. Signed-off-by: Masahiro Yamada Message-Id: <20210811163731.186125-4-masahiroy@kernel.org> Signed-off-by: Max Filippov

xtensa: build platform directories unconditionally

2021-08-11T18:37:13Z

All of arch/xtensa/platforms/*/ have Makefile. You do not need to check the presence of Makefile. Signed-off-by: Masahiro Yamada Message-Id: <20210811163731.186125-3-masahiroy@kernel.org> Signed-off-by: Max Filippov

xtensa: do not build variants directory

2021-08-11T18:37:13Z

None of arch/xtensa/variants/*/ has Makefile, so 'buildvar' is always empty. Perhaps, downstream variant code might be dropped in, but given the fact that none of upstream variants builds anything in their variant directory, I doubt this is needed. Signed-off-by: Masahiro Yamada Message-Id: <20210811163731.186125-2-masahiroy@kernel.org> Signed-off-by: Max Filippov

xtensa: remove unneeded exports

2021-08-11T18:37:12Z

These are not used in any of subdirectories. Signed-off-by: Masahiro Yamada Message-Id: <20210811163731.186125-1-masahiroy@kernel.org> Signed-off-by: Max Filippov

arch: use cross_compiling to check whether it is a cross build or not

2021-05-05T16:49:13Z

'cross_compiling' is defined by the top Makefile and available for arch Makefiles to check whether it is a cross build or not. A good thing is the variable name 'cross_compiling' is self-documenting. This is a simple replacement for m68k, mips, sh, for which $(ARCH) and $(SRCARCH) always match. No functional change is intended for xtensa, either. This is rather a fix for parisc because arch/parisc/Makefile defines UTS_MATCHINE depending on CONFIG_64BIT, therefore cc-cross-prefix is not working in Kconfig time. Signed-off-by: Masahiro Yamada Acked-by: Geert Uytterhoeven Acked-by: Helge Deller # parisc Acked-by: Max Filippov # xtensa

xtensa: move CONFIG_CPU_*_ENDIAN defines to Kconfig

2021-04-04T22:39:02Z

Move the definition of CONFIG_CPU_*_ENDIAN to Kconfig, the best place for CONFIG options. I slightly simplified the test code. You can use the -P option to suppress linemarker generation. The grep command is unneeded. $ echo __XTENSA_EB__ | xtensa-linux-gcc -E - # 1 "" # 1 "" # 1 "" # 1 "" 1 $ echo __XTENSA_EB__ | xtensa-linux-gcc -E -P - 1 Signed-off-by: Masahiro Yamada Message-Id: <20210313122342.69995-1-masahiroy@kernel.org> Signed-off-by: Max Filippov

arch: xtensa: Remove CONFIG_OPROFILE support

2021-01-29T04:35:51Z

The "oprofile" user-space tools don't use the kernel OPROFILE support any more, and haven't in a long time. User-space has been converted to the perf interfaces. Remove the old oprofile's architecture specific support. Suggested-by: Christoph Hellwig Suggested-by: Linus Torvalds Signed-off-by: Viresh Kumar Acked-by: Robert Richter Acked-by: Max Filippov Acked-by: William Cohen Acked-by: Al Viro Acked-by: Thomas Gleixner

xtensa: add XIP kernel support

2019-11-26T19:33:38Z

XIP (eXecute In Place) kernel image is the image that can be run directly from ROM, using RAM only for writable data. XIP xtensa kernel differs from regular xtensa kernel in the following ways: - it has exception/IRQ vectors merged into text section. No vectors relocation takes place at kernel startup. - .data/.bss location must be specified in the kernel configuration, its content is copied there in the _startup function. - .init.text is merged with the rest of text and is executed from ROM. - when MMU is used the virtual address where the kernel will be mapped must be specified in the kernel configuration. It may be in the KSEG or in the KIO, __pa macro is adjusted to be able to handle both. Signed-off-by: Max Filippov

xtensa: generate uapi header and syscall table header files

2018-12-03T07:45:41Z

System call table generation script must be run to gener- ate unistd_32.h and syscall_table.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32.h and syscall_table.h files by the syscall table generation script invoked by xtensa/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/syscall.c file. Signed-off-by: Firoz Khan Signed-off-by: Max Filippov