2005-09-26 06:04:21 +00:00
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#
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# Makefile for the linux kernel.
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#
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2007-12-20 11:58:00 +00:00
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CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
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2009-06-09 20:48:51 +00:00
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subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
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2005-09-30 03:51:25 +00:00
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ifeq ($(CONFIG_PPC64),y)
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2012-11-26 17:41:08 +00:00
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CFLAGS_prom_init.o += $(NO_MINIMAL_TOC)
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2005-09-30 03:51:25 +00:00
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endif
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2005-09-30 06:16:52 +00:00
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ifeq ($(CONFIG_PPC32),y)
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2005-10-06 02:06:20 +00:00
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CFLAGS_prom_init.o += -fPIC
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2005-10-06 03:24:50 +00:00
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CFLAGS_btext.o += -fPIC
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2005-09-30 06:16:52 +00:00
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endif
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2005-10-06 02:06:20 +00:00
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gcc-plugins: Add latent_entropy plugin
This adds a new gcc plugin named "latent_entropy". It is designed to
extract as much possible uncertainty from a running system at boot time as
possible, hoping to capitalize on any possible variation in CPU operation
(due to runtime data differences, hardware differences, SMP ordering,
thermal timing variation, cache behavior, etc).
At the very least, this plugin is a much more comprehensive example for
how to manipulate kernel code using the gcc plugin internals.
The need for very-early boot entropy tends to be very architecture or
system design specific, so this plugin is more suited for those sorts
of special cases. The existing kernel RNG already attempts to extract
entropy from reliable runtime variation, but this plugin takes the idea to
a logical extreme by permuting a global variable based on any variation
in code execution (e.g. a different value (and permutation function)
is used to permute the global based on loop count, case statement,
if/then/else branching, etc).
To do this, the plugin starts by inserting a local variable in every
marked function. The plugin then adds logic so that the value of this
variable is modified by randomly chosen operations (add, xor and rol) and
random values (gcc generates separate static values for each location at
compile time and also injects the stack pointer at runtime). The resulting
value depends on the control flow path (e.g., loops and branches taken).
Before the function returns, the plugin mixes this local variable into
the latent_entropy global variable. The value of this global variable
is added to the kernel entropy pool in do_one_initcall() and _do_fork(),
though it does not credit any bytes of entropy to the pool; the contents
of the global are just used to mix the pool.
Additionally, the plugin can pre-initialize arrays with build-time
random contents, so that two different kernel builds running on identical
hardware will not have the same starting values.
Signed-off-by: Emese Revfy <re.emese@gmail.com>
[kees: expanded commit message and code comments]
Signed-off-by: Kees Cook <keescook@chromium.org>
2016-06-20 18:41:19 +00:00
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CFLAGS_cputable.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
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2016-12-06 06:27:59 +00:00
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CFLAGS_prom_init.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
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gcc-plugins: Add latent_entropy plugin
This adds a new gcc plugin named "latent_entropy". It is designed to
extract as much possible uncertainty from a running system at boot time as
possible, hoping to capitalize on any possible variation in CPU operation
(due to runtime data differences, hardware differences, SMP ordering,
thermal timing variation, cache behavior, etc).
At the very least, this plugin is a much more comprehensive example for
how to manipulate kernel code using the gcc plugin internals.
The need for very-early boot entropy tends to be very architecture or
system design specific, so this plugin is more suited for those sorts
of special cases. The existing kernel RNG already attempts to extract
entropy from reliable runtime variation, but this plugin takes the idea to
a logical extreme by permuting a global variable based on any variation
in code execution (e.g. a different value (and permutation function)
is used to permute the global based on loop count, case statement,
if/then/else branching, etc).
To do this, the plugin starts by inserting a local variable in every
marked function. The plugin then adds logic so that the value of this
variable is modified by randomly chosen operations (add, xor and rol) and
random values (gcc generates separate static values for each location at
compile time and also injects the stack pointer at runtime). The resulting
value depends on the control flow path (e.g., loops and branches taken).
Before the function returns, the plugin mixes this local variable into
the latent_entropy global variable. The value of this global variable
is added to the kernel entropy pool in do_one_initcall() and _do_fork(),
though it does not credit any bytes of entropy to the pool; the contents
of the global are just used to mix the pool.
Additionally, the plugin can pre-initialize arrays with build-time
random contents, so that two different kernel builds running on identical
hardware will not have the same starting values.
Signed-off-by: Emese Revfy <re.emese@gmail.com>
[kees: expanded commit message and code comments]
Signed-off-by: Kees Cook <keescook@chromium.org>
2016-06-20 18:41:19 +00:00
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CFLAGS_btext.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
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CFLAGS_prom.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
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2008-10-06 23:06:12 +00:00
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ifdef CONFIG_FUNCTION_TRACER
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2008-05-15 03:49:44 +00:00
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# Do not trace early boot code
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2016-03-03 04:26:58 +00:00
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CFLAGS_REMOVE_cputable.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_prom_init.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_btext.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_prom.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
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2009-02-10 05:10:27 +00:00
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# do not trace tracer code
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2016-03-03 04:26:58 +00:00
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CFLAGS_REMOVE_ftrace.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
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2009-02-10 05:10:27 +00:00
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# timers used by tracing
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2016-03-03 04:26:58 +00:00
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CFLAGS_REMOVE_time.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
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2008-05-15 03:49:44 +00:00
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endif
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2008-03-08 02:55:58 +00:00
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obj-y := cputable.o ptrace.o syscalls.o \
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2006-01-12 10:22:34 +00:00
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irq.o align.o signal_32.o pmc.o vdso.o \
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2012-05-03 09:02:57 +00:00
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process.o systbl.o idle.o \
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2010-11-08 17:31:36 +00:00
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signal.o sysfs.o cacheinfo.o time.o \
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prom.o traps.o setup-common.o \
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2016-08-11 06:03:14 +00:00
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udbg.o misc.o io.o dma.o misc_$(BITS).o \
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2015-03-12 12:32:50 +00:00
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of_platform.o prom_parse.o
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2008-01-03 01:03:11 +00:00
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obj-$(CONFIG_PPC64) += setup_64.o sys_ppc32.o \
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2006-02-10 05:02:20 +00:00
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signal_64.o ptrace32.o \
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2009-07-23 23:15:59 +00:00
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paca.o nvram_64.o firmware.o
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2015-05-11 10:01:02 +00:00
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obj-$(CONFIG_VDSO32) += vdso32/
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2010-06-15 06:05:19 +00:00
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obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
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2009-07-23 23:15:59 +00:00
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obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_ppc970.o cpu_setup_pa6t.o
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2012-10-30 19:34:13 +00:00
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obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_power.o
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2016-08-11 13:07:43 +00:00
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obj-$(CONFIG_PPC_BOOK3S_64) += mce.o mce_power.o
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2010-07-14 04:12:16 +00:00
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obj-$(CONFIG_PPC_BOOK3E_64) += exceptions-64e.o idle_book3e.o
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2005-11-11 10:15:21 +00:00
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obj-$(CONFIG_PPC64) += vdso64/
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2009-06-02 21:17:37 +00:00
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obj-$(CONFIG_ALTIVEC) += vecemu.o
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2006-04-18 11:49:11 +00:00
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obj-$(CONFIG_PPC_970_NAP) += idle_power4.o
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2016-07-08 06:20:45 +00:00
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obj-$(CONFIG_PPC_P7_NAP) += idle_book3s.o
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2009-09-24 19:29:13 +00:00
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procfs-y := proc_powerpc.o
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2005-11-10 04:26:20 +00:00
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obj-$(CONFIG_PROC_FS) += $(procfs-y)
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2007-03-04 06:04:44 +00:00
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rtaspci-$(CONFIG_PPC64)-$(CONFIG_PCI) := rtas_pci.o
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obj-$(CONFIG_PPC_RTAS) += rtas.o rtas-rtc.o $(rtaspci-y-y)
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2009-09-24 19:30:05 +00:00
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obj-$(CONFIG_PPC_RTAS_DAEMON) += rtasd.o
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2005-11-03 03:41:19 +00:00
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obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o
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obj-$(CONFIG_RTAS_PROC) += rtas-proc.o
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2013-06-20 05:20:52 +00:00
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obj-$(CONFIG_EEH) += eeh.o eeh_pe.o eeh_dev.o eeh_cache.o \
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eeh_driver.o eeh_event.o eeh_sysfs.o
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2005-11-04 02:28:58 +00:00
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obj-$(CONFIG_GENERIC_TBSYNC) += smp-tbsync.o
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2005-12-04 07:39:37 +00:00
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obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
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2012-02-16 01:14:22 +00:00
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obj-$(CONFIG_FA_DUMP) += fadump.o
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2010-10-08 13:32:11 +00:00
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ifeq ($(CONFIG_PPC32),y)
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2008-06-18 21:26:52 +00:00
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obj-$(CONFIG_E500) += idle_e500.o
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2010-10-08 13:32:11 +00:00
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endif
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2006-03-27 08:15:26 +00:00
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obj-$(CONFIG_6xx) += idle_6xx.o l2cr_6xx.o cpu_setup_6xx.o
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obj-$(CONFIG_TAU) += tau_6xx.o
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2010-05-17 18:56:52 +00:00
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obj-$(CONFIG_HIBERNATION) += swsusp.o suspend.o
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ifeq ($(CONFIG_FSL_BOOKE),y)
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obj-$(CONFIG_HIBERNATION) += swsusp_booke.o
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else
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2016-08-11 06:03:14 +00:00
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obj-$(CONFIG_HIBERNATION) += swsusp_$(BITS).o
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2010-05-17 18:56:52 +00:00
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endif
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2007-09-21 00:16:20 +00:00
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obj64-$(CONFIG_HIBERNATION) += swsusp_asm64.o
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2016-08-11 06:03:14 +00:00
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obj-$(CONFIG_MODULES) += module.o module_$(BITS).o
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2007-10-04 01:02:09 +00:00
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obj-$(CONFIG_44x) += cpu_setup_44x.o
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2012-11-14 18:49:49 +00:00
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obj-$(CONFIG_PPC_FSL_BOOK3E) += cpu_setup_fsl_booke.o
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obj-$(CONFIG_PPC_DOORBELL) += dbell.o
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2011-06-29 19:16:59 +00:00
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obj-$(CONFIG_JUMP_LABEL) += jump_label.o
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2005-10-10 12:50:37 +00:00
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2016-08-11 06:03:14 +00:00
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extra-y := head_$(BITS).o
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2007-08-20 12:27:07 +00:00
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extra-$(CONFIG_40x) := head_40x.o
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2005-09-26 06:04:21 +00:00
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extra-$(CONFIG_44x) := head_44x.o
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extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
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extra-$(CONFIG_8xx) := head_8xx.o
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extra-y += vmlinux.lds
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2016-08-11 06:03:14 +00:00
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obj-$(CONFIG_RELOCATABLE) += reloc_$(BITS).o
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2011-12-14 22:58:12 +00:00
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2007-09-21 00:16:20 +00:00
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obj-$(CONFIG_PPC32) += entry_32.o setup_32.o
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powerpc: Merge 32 and 64-bit dma code
We essentially adopt the 64-bit dma code, with some changes to support
32-bit systems, including HIGHMEM. dma functions on 32-bit are now
invoked via accessor functions which call the correct op for a device based
on archdata dma_ops. If there is no archdata dma_ops, this defaults
to dma_direct_ops.
In addition, the dma_map/unmap_page functions are added to dma_ops
because we can't just fall back on map/unmap_single when HIGHMEM is
enabled. In the case of dma_direct_*, we stop using map/unmap_single
and just use the page version - this saves a lot of ugly
ifdeffing. We leave map/unmap_single in the dma_ops definition,
though, because they are needed by the iommu code, which does not
implement map/unmap_page. Ideally, going forward, we will completely
eliminate map/unmap_single and just have map/unmap_page, if it's
workable for 64-bit.
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-09-12 10:34:46 +00:00
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obj-$(CONFIG_PPC64) += dma-iommu.o iommu.o
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2008-07-23 16:30:15 +00:00
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obj-$(CONFIG_KGDB) += kgdb.o
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2005-10-06 02:06:20 +00:00
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obj-$(CONFIG_BOOTX_TEXT) += btext.o
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2005-11-04 23:33:55 +00:00
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obj-$(CONFIG_SMP) += smp.o
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2005-11-14 06:30:17 +00:00
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obj-$(CONFIG_KPROBES) += kprobes.o
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2017-02-08 09:50:51 +00:00
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obj-$(CONFIG_OPTPROBES) += optprobes.o optprobes_head.o
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2012-08-23 21:31:32 +00:00
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obj-$(CONFIG_UPROBES) += uprobes.o
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2006-01-10 05:19:05 +00:00
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obj-$(CONFIG_PPC_UDBG_16550) += legacy_serial.o udbg_16550.o
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2008-04-17 04:35:00 +00:00
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obj-$(CONFIG_STACKTRACE) += stacktrace.o
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2009-05-14 12:42:28 +00:00
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obj-$(CONFIG_SWIOTLB) += dma-swiotlb.o
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2006-11-11 06:24:53 +00:00
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2013-06-20 05:20:52 +00:00
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pci64-$(CONFIG_PPC64) += pci_dn.o pci-hotplug.o isa-bridge.o
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2016-08-11 06:03:14 +00:00
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obj-$(CONFIG_PCI) += pci_$(BITS).o $(pci64-y) \
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2009-08-25 20:07:11 +00:00
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pci-common.o pci_of_scan.o
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2007-05-08 02:58:34 +00:00
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obj-$(CONFIG_PCI_MSI) += msi.o
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2016-11-29 12:45:50 +00:00
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obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o crash.o \
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2016-08-11 06:03:14 +00:00
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machine_kexec_$(BITS).o
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2016-11-29 12:45:51 +00:00
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obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file_$(BITS).o kexec_elf_$(BITS).o
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powerpc: ima: get the kexec buffer passed by the previous kernel
Patch series "ima: carry the measurement list across kexec", v8.
The TPM PCRs are only reset on a hard reboot. In order to validate a
TPM's quote after a soft reboot (eg. kexec -e), the IMA measurement
list of the running kernel must be saved and then restored on the
subsequent boot, possibly of a different architecture.
The existing securityfs binary_runtime_measurements file conveniently
provides a serialized format of the IMA measurement list. This patch
set serializes the measurement list in this format and restores it.
Up to now, the binary_runtime_measurements was defined as architecture
native format. The assumption being that userspace could and would
handle any architecture conversions. With the ability of carrying the
measurement list across kexec, possibly from one architecture to a
different one, the per boot architecture information is lost and with it
the ability of recalculating the template digest hash. To resolve this
problem, without breaking the existing ABI, this patch set introduces
the boot command line option "ima_canonical_fmt", which is arbitrarily
defined as little endian.
The need for this boot command line option will be limited to the
existing version 1 format of the binary_runtime_measurements.
Subsequent formats will be defined as canonical format (eg. TPM 2.0
support for larger digests).
A simplified method of Thiago Bauermann's "kexec buffer handover" patch
series for carrying the IMA measurement list across kexec is included in
this patch set. The simplified method requires all file measurements be
taken prior to executing the kexec load, as subsequent measurements will
not be carried across the kexec and restored.
This patch (of 10):
The IMA kexec buffer allows the currently running kernel to pass the
measurement list via a kexec segment to the kernel that will be kexec'd.
The second kernel can check whether the previous kernel sent the buffer
and retrieve it.
This is the architecture-specific part which enables IMA to receive the
measurement list passed by the previous kernel. It will be used in the
next patch.
The change in machine_kexec_64.c is to factor out the logic of removing
an FDT memory reservation so that it can be used by remove_ima_buffer.
Link: http://lkml.kernel.org/r/1480554346-29071-2-git-send-email-zohar@linux.vnet.ibm.com
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andreas Steffen <andreas.steffen@strongswan.org>
Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
Cc: Josh Sklar <sklar@linux.vnet.ibm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-20 00:22:32 +00:00
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ifeq ($(CONFIG_HAVE_IMA_KEXEC)$(CONFIG_IMA),yy)
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obj-y += ima_kexec.o
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endif
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2006-08-31 23:02:42 +00:00
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obj-$(CONFIG_AUDIT) += audit.o
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obj64-$(CONFIG_AUDIT) += compat_audit.o
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2005-09-30 06:16:52 +00:00
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2011-04-11 21:25:01 +00:00
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obj-$(CONFIG_PPC_IO_WORKAROUNDS) += io-workarounds.o
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2008-05-15 03:49:44 +00:00
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obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
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2009-02-10 05:10:27 +00:00
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obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
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2011-02-02 17:27:24 +00:00
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obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
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2015-04-24 08:54:44 +00:00
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obj-$(CONFIG_TRACING) += trace_clock.o
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2010-02-26 00:09:45 +00:00
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2013-07-15 03:03:08 +00:00
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ifneq ($(CONFIG_PPC_INDIRECT_PIO),y)
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2006-11-12 22:27:39 +00:00
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obj-y += iomap.o
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[POWERPC] Allow hooking of PCI MMIO & PIO accessors on 64 bits
This patch reworks the way iSeries hooks on PCI IO operations (both MMIO
and PIO) and provides a generic way for other platforms to do so (we
have need to do that for various other platforms).
While reworking the IO ops, I ended up doing some spring cleaning in
io.h and eeh.h which I might want to split into 2 or 3 patches (among
others, eeh.h had a lot of useless stuff in it).
A side effect is that EEH for PIO should work now (it used to pass IO
ports down to the eeh address check functions which is bogus).
Also, new are MMIO "repeat" ops, which other archs like ARM already had,
and that we have too now: readsb, readsw, readsl, writesb, writesw,
writesl.
In the long run, I might also make EEH use the hooks instead
of wrapping at the toplevel, which would make things even cleaner and
relegate EEH completely in platforms/iseries, but we have to measure the
performance impact there (though it's really only on MMIO reads)
Since I also need to hook on ioremap, I shuffled the functions a bit
there. I introduced ioremap_flags() to use by drivers who want to pass
explicit flags to ioremap (and it can be hooked). The old __ioremap() is
still there as a low level and cannot be hooked, thus drivers who use it
should migrate unless they know they want the low level version.
The patch "arch provides generic iomap missing accessors" (should be
number 4 in this series) is a pre-requisite to provide full iomap
API support with this patch.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-11 06:25:10 +00:00
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endif
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2013-02-13 16:21:35 +00:00
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obj64-$(CONFIG_PPC_TRANSACTIONAL_MEM) += tm.o
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2005-11-18 04:43:34 +00:00
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obj-$(CONFIG_PPC64) += $(obj64-y)
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perf_counter: powerpc: Add processor back-end for MPC7450 family
This adds support for the performance monitor hardware on the
MPC7450 family of processors (7450, 7451, 7455, 7447/7457, 7447A,
7448), used in the later Apple G4 powermacs/powerbooks and other
machines. These machines have 6 hardware counters with a unique
set of events which can be counted on each counter, with some
events being available on multiple counters.
Raw event codes for these processors are (PMC << 8) + PMCSEL.
If PMC is non-zero then the event is that selected by the given
PMCSEL value for that PMC (hardware counter). If PMC is zero
then the event selected is one of the low-numbered ones that are
common to several PMCs. In this case PMCSEL must be <= 22 and
the event is what that PMCSEL value would select on PMC1 (but
it may be placed any other PMC that has the same event for that
PMCSEL value).
For events that count cycles or occurrences that exceed a threshold,
the threshold requested can be specified in the 0x3f000 bits of the
raw event codes. If the event uses the threshold multiplier bit
and that bit should be set, that is indicated with the 0x40000 bit
of the raw event code.
This fills in some of the generic cache events. Unfortunately there
are quite a few blank spaces in the table, partly because these
processors tend to count cache hits rather than cache accesses.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linuxppc-dev@ozlabs.org
Cc: benh@kernel.crashing.org
LKML-Reference: <19000.55631.802122.696927@cargo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-17 11:53:51 +00:00
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obj-$(CONFIG_PPC32) += $(obj32-y)
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2005-11-18 04:43:34 +00:00
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2016-11-29 12:45:50 +00:00
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ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC_CORE),)
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2008-12-17 10:08:55 +00:00
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obj-y += ppc_save_regs.o
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endif
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2012-03-15 10:52:13 +00:00
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obj-$(CONFIG_EPAPR_PARAVIRT) += epapr_paravirt.o epapr_hcalls.o
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2010-07-29 12:47:57 +00:00
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obj-$(CONFIG_KVM_GUEST) += kvm.o kvm_emul.o
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2010-07-29 12:47:48 +00:00
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2016-01-20 23:00:58 +00:00
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|
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# Disable GCOV & sanitizers in odd or sensitive code
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2009-08-09 19:02:51 +00:00
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GCOV_PROFILE_prom_init.o := n
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2016-01-20 23:00:58 +00:00
|
|
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UBSAN_SANITIZE_prom_init.o := n
|
2009-08-09 19:02:51 +00:00
|
|
|
GCOV_PROFILE_ftrace.o := n
|
2016-01-20 23:00:58 +00:00
|
|
|
UBSAN_SANITIZE_ftrace.o := n
|
2009-08-09 19:02:51 +00:00
|
|
|
GCOV_PROFILE_machine_kexec_64.o := n
|
2016-01-20 23:00:58 +00:00
|
|
|
UBSAN_SANITIZE_machine_kexec_64.o := n
|
2009-08-09 19:02:51 +00:00
|
|
|
GCOV_PROFILE_machine_kexec_32.o := n
|
2016-01-20 23:00:58 +00:00
|
|
|
UBSAN_SANITIZE_machine_kexec_32.o := n
|
2009-08-09 19:02:51 +00:00
|
|
|
GCOV_PROFILE_kprobes.o := n
|
2016-01-20 23:00:58 +00:00
|
|
|
UBSAN_SANITIZE_kprobes.o := n
|
|
|
|
UBSAN_SANITIZE_vdso.o := n
|
2009-08-09 19:02:51 +00:00
|
|
|
|
[PATCH] powerpc: Fix handling of fpscr on 64-bit
The recent merge of fpu.S broken the handling of fpscr for
ARCH=powerpc and CONFIG_PPC64=y. FP registers could be corrupted,
leading to strange random application crashes.
The confusion arises, because the thread_struct has (and requires) a
64-bit area to save the fpscr, because we use load/store double
instructions to get it in to/out of the FPU. However, only the low
32-bits are actually used, so we want to treat it as a 32-bit quantity
when manipulating its bits to avoid extra load/stores on 32-bit. This
patch replaces the current definition with a structure of two 32-bit
quantities (pad and val), to clarify things as much as is possible.
The 'val' field is used when manipulating bits, the structure itself
is used when obtaining the address for loading/unloading the value
from the FPU.
While we're at it, consolidate the 4 (!) almost identical versions of
cvt_fd() and cvt_df() (arch/ppc/kernel/misc.S,
arch/ppc64/kernel/misc.S, arch/powerpc/kernel/misc_32.S,
arch/powerpc/kernel/misc_64.S) into a single version in fpu.S. The
new version takes a pointer to thread_struct and applies the correct
offset itself, rather than a pointer to the fpscr field itself, again
to avoid confusion as to which is the correct field to use.
Finally, this patch makes ARCH=ppc64 also use the consolidated fpu.S
code, which it previously did not.
Built for G5 (ARCH=ppc64 and ARCH=powerpc), 32-bit powermac (ARCH=ppc
and ARCH=powerpc) and Walnut (ARCH=ppc, CONFIG_MATH_EMULATION=y).
Booted on G5 (ARCH=powerpc) and things which previously fell over no
longer do.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-27 06:27:25 +00:00
|
|
|
extra-$(CONFIG_PPC_FPU) += fpu.o
|
2009-06-02 21:17:37 +00:00
|
|
|
extra-$(CONFIG_ALTIVEC) += vector.o
|
2005-10-28 02:51:45 +00:00
|
|
|
extra-$(CONFIG_PPC64) += entry_64.o
|
2012-11-26 17:39:03 +00:00
|
|
|
extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o
|
2008-01-07 05:12:44 +00:00
|
|
|
|
|
|
|
extra-y += systbl_chk.i
|
|
|
|
$(obj)/systbl.o: systbl_chk
|
|
|
|
|
|
|
|
quiet_cmd_systbl_chk = CALL $<
|
|
|
|
cmd_systbl_chk = $(CONFIG_SHELL) $< $(obj)/systbl_chk.i
|
|
|
|
|
|
|
|
PHONY += systbl_chk
|
|
|
|
systbl_chk: $(src)/systbl_chk.sh $(obj)/systbl_chk.i
|
|
|
|
$(call cmd,systbl_chk)
|
2008-02-11 15:32:00 +00:00
|
|
|
|
2009-06-11 02:12:28 +00:00
|
|
|
ifeq ($(CONFIG_PPC_OF_BOOT_TRAMPOLINE),y)
|
2008-04-24 02:08:22 +00:00
|
|
|
$(obj)/built-in.o: prom_init_check
|
|
|
|
|
|
|
|
quiet_cmd_prom_init_check = CALL $<
|
|
|
|
cmd_prom_init_check = $(CONFIG_SHELL) $< "$(NM)" "$(obj)/prom_init.o"
|
|
|
|
|
|
|
|
PHONY += prom_init_check
|
|
|
|
prom_init_check: $(src)/prom_init_check.sh $(obj)/prom_init.o
|
|
|
|
$(call cmd,prom_init_check)
|
2009-06-11 02:12:28 +00:00
|
|
|
endif
|
2008-04-24 02:08:22 +00:00
|
|
|
|
2008-02-11 15:32:00 +00:00
|
|
|
clean-files := vmlinux.lds
|