kernel/arch/mips/fw/lib/cmdline.c, branch linux-rolling-stable

MIPS: fw: Allow firmware to pass a empty env

2023-05-11T14:10:51Z

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: do not compile generic functions for CONFIG_CAVIUM_OCTEON_SOC

2020-03-25T15:07:13Z

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

MIPS: FW: Use kstrtoul() to parse unsigned long from the fw environment

2014-11-24T06:45:26Z

Fix some value corruptions with values that can't be represented in a signed long. Signed-off-by: Alban Bedel Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8358/ Signed-off-by: Ralf Baechle

MIPS: FW: Fix parsing u-boot environment

2014-11-24T06:45:25Z

When reading u-boot's key=value pairs it should skip the '=' and not use the next argument. Signed-off-by: Alban Bedel Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8357/ Signed-off-by: Ralf Baechle

MIPS: FW: Add environment variable processing.

2013-05-08T10:30:09Z

Add parsing of the environment and command line variables passed to the kernel to the firmware library. Signed-off-by: Steven J. Hill