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https://github.com/torvalds/linux.git
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5b102782c7
After updating ppc-dis.c, ppc-opc.c and ppc.h the following changes were
made to enable compilation and working of xmon:
1. Remove all disassembler_info
2. Use xmon's printf/print_address to output data and addresses
respectively.
3. All bfd_* types and casts have been removed.
4. Optimizations related to opcd_indices have been removed.
5. The dialect is set based on cpu features.
6. PPC_OPCODE_CLASSIC is no longer supported in the new
disassembler.
7. VLE opcode parsing and printing has been stripped.
8. Coding style conventions used for those routines has
been retained and it does not match our CodingStyle.
9. The highest supported dialect is POWER9.
10. Defined ATTRIBUTE_UNUSED in ppc-dis.c.
11. Defined _(x) in ppc-dis.c.
Finally, we remove the dependency on BROKEN so that XMON_DISASSEMBLY can
be enabled again.
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
373 lines
11 KiB
Plaintext
373 lines
11 KiB
Plaintext
menu "Kernel hacking"
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source "lib/Kconfig.debug"
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config PPC_DISABLE_WERROR
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bool "Don't build arch/powerpc code with -Werror"
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default n
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help
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This option tells the compiler NOT to build the code under
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arch/powerpc with the -Werror flag (which means warnings
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are treated as errors).
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Only enable this if you are hitting a build failure in the
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arch/powerpc code caused by a warning, and you don't feel
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inclined to fix it.
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config PPC_WERROR
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bool
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depends on !PPC_DISABLE_WERROR
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default y
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config PRINT_STACK_DEPTH
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int "Stack depth to print" if DEBUG_KERNEL
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default 64
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help
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This option allows you to set the stack depth that the kernel
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prints in stack traces. This can be useful if your display is
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too small and stack traces cause important information to
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scroll off the screen.
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config HCALL_STATS
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bool "Hypervisor call instrumentation"
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depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
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help
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Adds code to keep track of the number of hypervisor calls made and
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the amount of time spent in hypervisor calls. Wall time spent in
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each call is always calculated, and if available CPU cycles spent
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are also calculated. A directory named hcall_inst is added at the
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root of the debugfs filesystem. Within the hcall_inst directory
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are files that contain CPU specific call statistics.
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This option will add a small amount of overhead to all hypervisor
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calls.
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config PPC_EMULATED_STATS
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bool "Emulated instructions tracking"
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depends on DEBUG_FS
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help
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Adds code to keep track of the number of instructions that are
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emulated by the in-kernel emulator. Counters for the various classes
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of emulated instructions are available under
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powerpc/emulated_instructions/ in the root of the debugfs file
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system. Optionally (controlled by
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powerpc/emulated_instructions/do_warn in debugfs), rate-limited
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warnings can be printed to the console when instructions are
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emulated.
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config CODE_PATCHING_SELFTEST
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bool "Run self-tests of the code-patching code"
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depends on DEBUG_KERNEL
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default n
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config JUMP_LABEL_FEATURE_CHECKS
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bool "Enable use of jump label for cpu/mmu_has_feature()"
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depends on JUMP_LABEL
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default y
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help
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Selecting this options enables use of jump labels for some internal
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feature checks. This should generate more optimal code for those
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checks.
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config JUMP_LABEL_FEATURE_CHECK_DEBUG
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bool "Do extra check on feature fixup calls"
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depends on DEBUG_KERNEL && JUMP_LABEL_FEATURE_CHECKS
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default n
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help
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This tries to catch incorrect usage of cpu_has_feature() and
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mmu_has_feature() in the code.
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If you don't know what this means, say N.
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config FTR_FIXUP_SELFTEST
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bool "Run self-tests of the feature-fixup code"
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depends on DEBUG_KERNEL
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default n
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config MSI_BITMAP_SELFTEST
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bool "Run self-tests of the MSI bitmap code"
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depends on DEBUG_KERNEL
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default n
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config XMON
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bool "Include xmon kernel debugger"
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depends on DEBUG_KERNEL
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help
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Include in-kernel hooks for the xmon kernel monitor/debugger.
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Unless you are intending to debug the kernel, say N here.
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Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
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nothing will appear on the screen (xmon writes directly to the
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framebuffer memory).
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The cmdline option 'xmon' or 'xmon=early' will drop into xmon
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very early during boot. 'xmon=on' will just enable the xmon
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debugger hooks. 'xmon=off' will disable the debugger hooks
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if CONFIG_XMON_DEFAULT is set.
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xmon will print a backtrace on the very first invocation.
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'xmon=nobt' will disable this autobacktrace.
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config XMON_DEFAULT
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bool "Enable xmon by default"
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depends on XMON
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help
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xmon is normally disabled unless booted with 'xmon=on'.
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Use 'xmon=off' to disable xmon init during runtime.
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config XMON_DISASSEMBLY
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bool "Include disassembly support in xmon"
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depends on XMON
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default y
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help
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Include support for disassembling in xmon. You probably want
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to say Y here, unless you're building for a memory-constrained
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system.
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config DEBUGGER
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bool
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depends on KGDB || XMON
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default y
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config BDI_SWITCH
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bool "Include BDI-2000 user context switcher"
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depends on DEBUG_KERNEL && PPC32
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help
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Include in-kernel support for the Abatron BDI2000 debugger.
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Unless you are intending to debug the kernel with one of these
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machines, say N here.
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config BOOTX_TEXT
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bool "Support for early boot text console (BootX or OpenFirmware only)"
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depends on PPC_BOOK3S
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help
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Say Y here to see progress messages from the boot firmware in text
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mode. Requires either BootX or Open Firmware.
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config PPC_EARLY_DEBUG
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bool "Early debugging (dangerous)"
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help
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Say Y to enable some early debugging facilities that may be available
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for your processor/board combination. Those facilities are hacks
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intended to debug problems early during boot, this should not be
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enabled in a production kernel.
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Note that enabling this will also cause the kernel default log level
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to be pushed to max automatically very early during boot
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choice
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prompt "Early debugging console"
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depends on PPC_EARLY_DEBUG
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help
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Use the selected console for early debugging. Careful, if you
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enable debugging for the wrong type of machine your kernel
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_will not boot_.
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config PPC_EARLY_DEBUG_BOOTX
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bool "BootX or OpenFirmware"
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depends on BOOTX_TEXT
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help
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Select this to enable early debugging for a machine using BootX
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or OpenFirmware.
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config PPC_EARLY_DEBUG_LPAR
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bool "LPAR HV Console"
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depends on PPC_PSERIES && HVC_CONSOLE
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help
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Select this to enable early debugging for a machine with a HVC
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console on vterm 0.
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config PPC_EARLY_DEBUG_LPAR_HVSI
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bool "LPAR HVSI Console"
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depends on PPC_PSERIES && HVC_CONSOLE
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help
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Select this to enable early debugging for a machine with a HVSI
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console on a specified vterm.
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config PPC_EARLY_DEBUG_G5
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bool "Apple G5"
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depends on PPC_PMAC64
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help
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Select this to enable early debugging for Apple G5 machines.
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config PPC_EARLY_DEBUG_RTAS_PANEL
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bool "RTAS Panel"
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depends on PPC_RTAS
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help
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Select this to enable early debugging via the RTAS panel.
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config PPC_EARLY_DEBUG_RTAS_CONSOLE
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bool "RTAS Console"
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depends on PPC_RTAS
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select UDBG_RTAS_CONSOLE
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help
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Select this to enable early debugging via the RTAS console.
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config PPC_EARLY_DEBUG_MAPLE
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bool "Maple real mode"
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depends on PPC_MAPLE
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help
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Select this to enable early debugging for Maple.
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config PPC_EARLY_DEBUG_PAS_REALMODE
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bool "PA Semi real mode"
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depends on PPC_PASEMI
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help
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Select this to enable early debugging for PA Semi.
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Output will be on UART0.
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config PPC_EARLY_DEBUG_44x
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bool "Early serial debugging for IBM/AMCC 44x CPUs"
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depends on 44x
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help
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Select this to enable early debugging for IBM 44x chips via the
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inbuilt serial port. If you enable this, ensure you set
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PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
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config PPC_EARLY_DEBUG_40x
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bool "Early serial debugging for IBM/AMCC 40x CPUs"
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depends on 40x
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help
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Select this to enable early debugging for IBM 40x chips via the
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inbuilt serial port. This works on chips with a 16550 compatible
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UART. Xilinx chips with uartlite cannot use this option.
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config PPC_EARLY_DEBUG_CPM
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bool "Early serial debugging for Freescale CPM-based serial ports"
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depends on SERIAL_CPM
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help
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Select this to enable early debugging for Freescale chips
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using a CPM-based serial port. This assumes that the bootwrapper
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has run, and set up the CPM in a particular way.
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config PPC_EARLY_DEBUG_USBGECKO
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bool "Early debugging through the USB Gecko adapter"
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depends on GAMECUBE_COMMON
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select USBGECKO_UDBG
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help
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Select this to enable early debugging for Nintendo GameCube/Wii
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consoles via an external USB Gecko adapter.
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config PPC_EARLY_DEBUG_PS3GELIC
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bool "Early debugging through the PS3 Ethernet port"
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depends on PPC_PS3
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select PS3GELIC_UDBG
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help
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Select this to enable early debugging for the PlayStation3 via
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UDP broadcasts sent out through the Ethernet port.
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config PPC_EARLY_DEBUG_OPAL_RAW
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bool "OPAL raw console"
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depends on HVC_OPAL
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help
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Select this to enable early debugging for the PowerNV platform
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using a "raw" console
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config PPC_EARLY_DEBUG_OPAL_HVSI
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bool "OPAL hvsi console"
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depends on HVC_OPAL
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help
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Select this to enable early debugging for the PowerNV platform
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using an "hvsi" console
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config PPC_EARLY_DEBUG_MEMCONS
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bool "In memory console"
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help
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Select this to enable early debugging using an in memory console.
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This console provides input and output buffers stored within the
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kernel BSS and should be safe to select on any system. A debugger
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can then be used to read kernel output or send input to the console.
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endchoice
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config PPC_MEMCONS_OUTPUT_SIZE
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int "In memory console output buffer size"
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depends on PPC_EARLY_DEBUG_MEMCONS
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default 4096
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help
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Selects the size of the output buffer (in bytes) of the in memory
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console.
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config PPC_MEMCONS_INPUT_SIZE
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int "In memory console input buffer size"
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depends on PPC_EARLY_DEBUG_MEMCONS
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default 128
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help
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Selects the size of the input buffer (in bytes) of the in memory
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console.
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config PPC_EARLY_DEBUG_OPAL
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def_bool y
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depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
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config PPC_EARLY_DEBUG_HVSI_VTERMNO
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hex "vterm number to use with early debug HVSI"
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depends on PPC_EARLY_DEBUG_LPAR_HVSI
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default "0x30000000"
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help
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You probably want 0x30000000 for your first serial port and
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0x30000001 for your second one
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config PPC_EARLY_DEBUG_OPAL_VTERMNO
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hex "vterm number to use with OPAL early debug"
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depends on PPC_EARLY_DEBUG_OPAL
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default "0"
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help
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This correspond to which /dev/hvcN you want to use for early
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debug.
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On OPAL v2, this will be 0 for network console and 1 or 2 for
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the machine built-in serial ports.
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config PPC_EARLY_DEBUG_44x_PHYSLOW
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hex "Low 32 bits of early debug UART physical address"
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depends on PPC_EARLY_DEBUG_44x
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default "0x40000200"
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help
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You probably want 0x40000200 for ebony boards and
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0x40000300 for taishan
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config PPC_EARLY_DEBUG_44x_PHYSHIGH
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hex "EPRN of early debug UART physical address"
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depends on PPC_EARLY_DEBUG_44x
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default "0x1"
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config PPC_EARLY_DEBUG_40x_PHYSADDR
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hex "Early debug UART physical address"
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depends on PPC_EARLY_DEBUG_40x
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default "0xef600300"
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config PPC_EARLY_DEBUG_CPM_ADDR
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hex "CPM UART early debug transmit descriptor address"
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depends on PPC_EARLY_DEBUG_CPM
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default "0xfa202008" if PPC_EP88XC
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default "0xf0001ff8" if CPM2
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default "0xff002008" if CPM1
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help
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This specifies the address of the transmit descriptor
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used for early debug output. Because it is needed before
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platform probing is done, all platforms selected must
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share the same address.
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config FAIL_IOMMU
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bool "Fault-injection capability for IOMMU"
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depends on FAULT_INJECTION
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help
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Provide fault-injection capability for IOMMU. Each device can
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be selectively enabled via the fail_iommu property.
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If you are unsure, say N.
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config PPC_PTDUMP
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bool "Export kernel pagetable layout to userspace via debugfs"
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depends on DEBUG_KERNEL && DEBUG_FS
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help
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This option exports the state of the kernel pagetables to a
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debugfs file. This is only useful for kernel developers who are
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working in architecture specific areas of the kernel - probably
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not a good idea to enable this feature in a production kernel.
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If you are unsure, say N.
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config PPC_HTDUMP
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def_bool y
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depends on PPC_PTDUMP && PPC_BOOK3S
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endmenu
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