kernel/linux.git/arch/mips/fw, branch v5.15.208

MIPS: fw: Allow firmware to pass a empty env

2023-05-11T14:00:17+00:00

commit ee1809ed7bc456a72dc8410b475b73021a3a68d5 upstream. fw_getenv will use env entry to determine style of env, however it is legal for firmware to just pass a empty list. Check if first entry exist before running strchr to avoid null pointer dereference. Cc: stable@vger.kernel.org Link: https://github.com/clbr/n64bootloader/issues/5 Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer Signed-off-by: Greg Kroah-Hartman

MIPS: Remove empty prom_free_prom_memory functions

2021-01-07T16:11:33+00:00

Most of the prom_free_prom_memory functions are empty. With a new weak prom_free_prom_memory() we can remove all of them. Signed-off-by: Thomas Bogendoerfer Acked-by: Florian Fainelli

MIPS: replace add_memory_region with memblock

2020-10-12T10:01:36+00:00

add_memory_region was the old interface for registering memory and was already changed to used memblock internaly. Replace it by directly calling memblock functions. Signed-off-by: Thomas Bogendoerfer

mips: Return proper error code from console ->setup() hook

2020-06-25T12:20:13+00:00

For unifying console ->setup() handling, which is poorly documented, return error code, rather than non-zero arbitrary number. Signed-off-by: Andy Shevchenko Reviewed-by: Petr Mladek Acked-by: Thomas Bogendoerfer Signed-off-by: Petr Mladek Link: https://lore.kernel.org/r/20200618164751.56828-2-andriy.shevchenko@linux.intel.com

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09T16:39:13+00:00

Patch series "mm: consolidate definitions of page table accessors", v2. The low level page table accessors (pXY_index(), pXY_offset()) are duplicated across all architectures and sometimes more than once. For instance, we have 31 definition of pgd_offset() for 25 supported architectures. Most of these definitions are actually identical and typically it boils down to, e.g. static inline unsigned long pmd_index(unsigned long address) { return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1); } static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) { return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address); } These definitions can be shared among 90% of the arches provided XYZ_SHIFT, PTRS_PER_XYZ and xyz_page_vaddr() are defined. For architectures that really need a custom version there is always possibility to override the generic version with the usual ifdefs magic. These patches introduce include/linux/pgtable.h that replaces include/asm-generic/pgtable.h and add the definitions of the page table accessors to the new header. This patch (of 12): The linux/mm.h header includes to allow inlining of the functions involving page table manipulations, e.g. pte_alloc() and pmd_alloc(). So, there is no point to explicitly include in the files that include . The include statements in such cases are remove with a simple loop: for f in $(git grep -l "include ") ; do sed -i -e '/include / d' $f done Signed-off-by: Mike Rapoport Signed-off-by: Andrew Morton Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Brian Cain Cc: Catalin Marinas Cc: Chris Zankel Cc: "David S. Miller" Cc: Geert Uytterhoeven Cc: Greentime Hu Cc: Greg Ungerer Cc: Guan Xuetao Cc: Guo Ren Cc: Heiko Carstens Cc: Helge Deller Cc: Ingo Molnar Cc: Ley Foon Tan Cc: Mark Salter Cc: Matthew Wilcox Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Mike Rapoport Cc: Nick Hu Cc: Paul Walmsley Cc: Richard Weinberger Cc: Rich Felker Cc: Russell King Cc: Stafford Horne Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Tony Luck Cc: Vincent Chen Cc: Vineet Gupta Cc: Will Deacon Cc: Yoshinori Sato Link: http://lkml.kernel.org/r/20200514170327.31389-1-rppt@kernel.org Link: http://lkml.kernel.org/r/20200514170327.31389-2-rppt@kernel.org Signed-off-by: Linus Torvalds

MIPS: CFE: Remove dead code in cfe_getfwinfo()

2020-05-07T08:29:42+00:00

This code has been marked dead since the beginning of the git history. Seems no need to keep it now. Signed-off-by: Jason Yan Signed-off-by: Thomas Bogendoerfer

MIPS: fw: arc: add __weak to prom_meminit and prom_free_prom_memory

2020-04-08T15:13:45+00:00

As far as I understood, prom_meminit() in arch/mips/fw/arc/memory.c is overridden by the one in arch/mips/sgi-ip32/ip32-memory.c if CONFIG_SGI_IP32 is enabled. The use of EXPORT_SYMBOL in static libraries potentially causes a problem for the llvm linker [1]. So, I want to forcibly link lib-y objects to vmlinux when CONFIG_MODULES=y. As a groundwork, we must fix multiple definitions that have previously been hidden by lib-y. The prom_cleanup() in this file is already marked as __weak (because it is overridden by the one in arch/mips/sgi-ip22/ip22-mc.c). I think it should be OK to do the same for these two. [1]: https://github.com/ClangBuiltLinux/linux/issues/515 Reported-by: kbuild test robot Signed-off-by: Masahiro Yamada Acked-By: Thomas Bogendoerfer

MIPS: do not compile generic functions for CONFIG_CAVIUM_OCTEON_SOC

2020-03-25T15:07:13+00:00

MIPS provides multiple definitions for the following functions: fw_init_cmdline __delay __udelay __ndelay memmove __rmemcpy memcpy __copy_user The generic ones are defined in lib-y objects, which are overridden by the Octeon ones when CONFIG_CAVIUM_OCTEON_SOC is enabled. The use of EXPORT_SYMBOL in static libraries potentially causes a problem for the llvm linker [1]. So, I want to forcibly link lib-y objects to vmlinux when CONFIG_MODULES=y. As a groundwork, we must fix multiple definitions that have previously been hidden by lib-y. If you look at lib/string.c, arch can define __HAVE_ARCH_* to opt out the generic implementation. Similarly, this commit adds CONFIG_HAVE_PLAT_* to allow a platform to opt out the MIPS generic code. [1]: https://github.com/ClangBuiltLinux/linux/issues/515 Reported-by: kbuild test robot Signed-off-by: Masahiro Yamada Signed-off-by: Thomas Bogendoerfer

Merge tag 'mips_fixes_5.4_3' into mips-next

2019-11-01T21:36:44+00:00

Pull in mips-fixes primarily to gain build fixes in order to allow better testing of mips-next. A few MIPS fixes: - Fix VDSO time-related function behavior for systems where we need to fall back to syscalls, but were instead returning bogus results. - A fix to TLB exception handlers for Cavium Octeon systems where they would inadvertently clobber the $1/$at register. - A build fix for bcm63xx configurations. - Switch to using my @kernel.org email address. Signed-off-by: Paul Burton

MIPS: SGI-IP27: reduce ARC usage to a minimum

2019-10-24T04:10:37+00:00

IP27 uses ARC prom only for parsing prom arguments and has a hack for IP27 to make the ARC code behave. By introducing config symbol ARC_CMDLINE_ONLY IP27 only drags in ARC cmdline parsing and does everything else in IP27 specific code. Signed-off-by: Thomas Bogendoerfer Signed-off-by: Paul Burton Cc: Ralf Baechle Cc: Paul Burton Cc: James Hogan Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org