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path: root/kexec/arch/mips/crashdump-mips.c
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2017-10-18kexec-tools: mips: Use proper page_offset for OCTEON CPUs.David Daney
The OCTEON family of MIPS64 CPUs uses a PAGE_OFFSET of 0x8000000000000000ULL, which is differs from other CPUs. Scan /proc/cpuinfo to see if the current system is "Octeon", if so, patch the page_offset so that usable kdump core files are produced. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2017-10-16kexec-tools: mips: Try to include bss in kernel vmcore file.David Daney
The kernel message buffers, as well as a lot of other useful data reside in the bss section. Without this vmcore-dmesg cannot work, and debugging with a core dump is much more difficult. Try to add the /proc/iomem "Kernel bss" section to vmcore. If it is not found, just do what we used to do and use "Kernel data" instead. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2017-10-16kexec-tools: mips: Don't set lowmem_limit to 2G for 64-bit systems.David Daney
The 64-bit MIPS architecture doesn't have the same 2G limit the 32-bit version has. Set MAXMEM and lowmem_limit to 0 for 64-bit MIPS so that memory above 2G is usable in the kdump core files. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2017-03-14Don't use %L width specifier with integer valuesPhilip Prindeville
MUSL doesn't support %L except for floating-point arguments; therefore, %ll must be used instead with integer arguments. Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2017-03-02crashdump/mips: Add get_crash_kernel_load_range() functionDaniel Kiper
Implement get_crash_kernel_load_range() in support of print crash kernel region size option. Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com> Signed-off-by: Eric DeVolder <eric.devolder@oracle.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2016-12-09mips: add dtb loading supportMarcin Nowakowski
Kexec for MIPS currently does not support loading devicetrees, unless they are embedded in the kernel elf file. Add an option to either pass a new dtb file or - if not specified - to be generated from existing device tree on the device. As new generic platforms require a dtb to be passed separately this is required for such platforms and will be ignored by the kernel otherwise. Generic kexec infrastructure for dtb support is used. Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Signed-off-by: Simon Horman <horms@verge.net.au>
2016-12-09mips: crashdump: add little-endian supportMarcin Nowakowski
Elf header for crashdump has until now been hardcoded as big-endian. Change that to use the native endianness for the compile target so that the crashdumps are generated properly for each CPU type. Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2016-12-09mips: use arch_options for both 32 and 64 bit variantsMarcin Nowakowski
At the moment arch_options structure is defined for 64-bit only and is used exclusively in ifdef'ed code. Remove the ifdefs around the uses of the structure and define it for all code variants as it will be used for passing more arch options in the followup commits. Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2015-02-11mips: remove unused variable.Yousong Zhou
Fixes the following compilation warning. kexec/arch/mips/crashdump-mips.c:151:6: warning: unused variable 'i' [-Wunused-variable] Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2015-02-12mips: fix compiler warning on printing 64-bit integer.Yousong Zhou
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2013-06-10kexec-tools: mips: Remove saved_max_memZhang Yanfei
saved_max_mem is used to calculate the amount of memory that the previous kernel used. And passed to the dump-capture kernel by kernel commandline parameter "savemaxmem=". But in the dump-capture kernel, we never use this parameter now, so remove saved_max_mem and don't add "savemaxmem=" to new kernel commandline. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2013-03-14kexec: mips: use _ALIGN* to make the logic clearZhang Yanfei
By replacing all the explicit align opertion with marco _ALIGN*, the code logic could be more clear. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2012-12-03kexec: Fix compile errors in crashdump-mips.cDavid Daney
When building configured as '--host=mips64-octeon-linux-gnu' using GCC-4.7.0 there are two compile errors, fix them. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2012-03-29mips: move DEBUG code to --debugCong Wang
Like patch 1/5, this one moves code under #if DEBUG to --debug on mips arch. Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2011-04-29kexec: remove duplicated backup_src_start field from struct crash_elf_infoCong Wang
Signed-off-by: WANG Cong <amwang@redhat.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2011-04-27kexec: remove duplicated backup_src_start field from struct crash_elf_infoAmerigo Wang
Vivek pointed out that we have duplicated ->backup_src_start in struct crash_elf_info and struct kexec_info. This patch removes the ->backup_src_start and ->backup_src_end from struct crash_elf_info. I tested it on both i686 and ppc64, and used a test case from Dave Anderson to confirm the backup region is correct on i686. Signed-off-by: WANG Cong <amwang@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2010-12-21mips: Use 32bit constant for 32bit elf kern_vaddr_startSimon Horman
Signed-off-by: Simon Horman <horms@verge.net.au>
2010-12-21mips: kern_vaddr_start is now in crash_elf_infoSimon Horman
Signed-off-by: Simon Horman <horms@verge.net.au>
2010-11-18Patch adds kernel data section to final vmcore. This forces gdb read kernelMaxim Uvarov
static data from dump instead of not initialized values from vmlinux. Signed-off-by: Maxim Uvarov <muvarov@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2010-03-08some kexec MIPS improvementsMaxim Uvarov
- using simple mips* ) in configure.ac to make it compilable on mips2 and mips64 - remove kexec/arch/mips/mips-setup-simple.S which prepares cmdline for new kernel, it is better to move this work to kernel code. BTW this code was compilable only on o32 because of t4 is not defined on 64-64 or n32 MIPS ABIs. - simple put cmdline as string, kernel code should catch cmdline like this int board_kexec_prepare(struct kimage *image) { int i; char *bootloader = "kexec"; board_boot_desc_ptr->argc = 0; for(i=0;i<image->nr_segments;i++) { printk("segment %d if (!strncmp(bootloader, (char*)image->segment[i].buf, strlen(bootloader))) { /* * convert command line string to array * of parameters (as bootloader does). */ int argc = 0, offt; char *str = (char *)image->segment[i].buf; char *ptr = strchr(str, ' '); while (ptr && (ARGV_MAX_ARGS > argc)) { *ptr = '\0'; if (ptr[1] != ' ') { offt = (int)(ptr - str + 1); boot_desc_ptr->argv[argc] = image->segment[i].mem + offt; argc++; } ptr = strchr(ptr + 1, ' '); } boot_desc_ptr->argc = argc; break; } } Keep it as string make code simple and more readable. - add crashdump support - do not redefine syscalls numbers if they defined in system remove fixups for /proc/iomem. If your board provides wrong /proc/iomem please fix kernel, or at least you local version of kexec. No need to support it in main line. At least add option --fake-iomem - some minor fixes Signed-off-by: Maxim Uvarov <muvarov@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
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