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[ Upstream commit adefd051a6707a6ca0ebad278d3c1c05c960fc3b ]
Since commit 9012d011660ea5cf2 ("compiler: allow all arches to enable
CONFIG_OPTIMIZE_INLINING"), xtensa:tinyconfig fails to build with section
mismatch errors.
WARNING: vmlinux.o(.text.unlikely+0x68): Section mismatch in reference
from the function ___pa()
to the function .meminit.text:memblock_reserve()
WARNING: vmlinux.o(.text.unlikely+0x74): Section mismatch in reference
from the function mem_reserve()
to the function .meminit.text:memblock_reserve()
FATAL: modpost: Section mismatches detected.
This was not seen prior to the above mentioned commit because mem_reserve()
was always inlined.
Mark mem_reserve(() as __init_memblock to have it reside in the same
section as memblock_reserve().
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-Id: <1559220098-9955-1-git-send-email-linux@roeck-us.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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A kernel may not need any boot parameters from the bootloader, allow
disabling bootparam parsing in that case.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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platform/hardware.h no longer supply any information for processor.h,
vectors.h, setup.c or vmlinux.lds.S, don't include it.
This header is now empty in the platforms/iss, so remove it altogether.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
- Convert to use memblock_virt_alloc in DT code which supports
bootmem arches. With this we can remove the arch specific
early_init_dt_alloc_memory_arch() functions.
- Enable running the DT unittests on UML
- Use SPDX license tags on DT files
- Fix early FDT kconfig ifdef logic
- Clean-up unittest Makefile
- Fix function comment for of_irq_parse_raw
- Add missing documentation for linux,initrd-{start,end} properties
- Clean-up of binding examples using uppercase hex
- Add trivial devices W83773G and Infineon TLV493D-A1B6
- Add missing STM32 SoC bindings
- Various small binding doc fixes
* tag 'devicetree-for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (23 commits)
xtensa: remove arch specific early DT functions
x86: remove arch specific early_init_dt_alloc_memory_arch
nios2: remove arch specific early_init_dt_alloc_memory_arch
mips: remove arch specific early_init_dt_alloc_memory_arch
metag: remove arch specific early DT functions
cris: remove arch specific early DT functions
libfdt: remove unnecessary include directive from <linux/libfdt.h>
of: unittest: refactor Makefile
of/fdt: use memblock_virt_alloc for early alloc
of: Use SPDX license tag for DT files
of/fdt: Fix #ifdef dependency of early flattree declarations
dt-bindings: h8300 clocksource: correct spelling of pulse
dt-bindings: imx6q-pcie: Add required property for i.MX6SX
mmc: Don't reference Linux-specific OF_GPIO_ACTIVE_LOW flag in DT binding
dt-bindings: Use lower case hex in unit-addresses
dt-bindings: display: panel: Fix compatible string for Toshiba LT089AC29000
dt-bindings: Add Infineon TLV493D-A1B6
dt-bindings: mailbox: ti,message-manager: Fix interrupt name error
dt-bindings: chosen: Document linux,initrd-{start,end}
dt-bindings: arm: document supported STM32 SoC family
...
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Now that the DT core code handles bootmem arches, we can remove the xtensa
specific early_init_dt_alloc_memory_arch function. The common
early_init_dt_add_memory_arch can be used too now that xtensa switched to
memblock.
Cc: Chris Zankel <chris@zankel.net>
Cc: linux-xtensa@linux-xtensa.org
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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Cover kernel addresses above 0x90000000 by the shadow map. Enable
HAVE_ARCH_KASAN when MMU is enabled. Provide kasan_early_init that fills
shadow map with writable copies of kasan_zero_page. Call
kasan_early_init right after mmu initialization in the setup_arch.
Provide kasan_init that allocates proper shadow map pages from the
memblock and puts these pages into the shadow map for addresses from
VMALLOC area to the end of KSEG. Call kasan_init right after memblock
initialization. Don't use KASAN for the boot code, MMU and KASAN
initialization and page fault handler. Make kernel stack size 4 times
larger when KASAN is enabled to avoid stack overflows.
GCC 7.3, 8 or newer is required to build the xtensa kernel with KASAN.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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KIO region placement may be specified in the device tree, that's why
it's initialized with the rest of MMU after the early_init_devtree. In
order to support KASAN the MMU must be initialized earlier.
Separate KIO initialization from the rest of MMU initialization.
Reinitialize KIO if its location is specified in the device tree.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Replace #ifdef'fed/commented out debug printk statements with pr_debug.
Replace printk statements with pr_* equivalents.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Print hardware config ID on startup and config ID recorded in the
configuration if it doesn't match one read from the hardware.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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vmlinux.lds.S doesn't do anything special with literals, so instead of
keeping them separate put them into the corresponding text sections.
Drop explicit .literal sections from the vmlinux.lds.S, use standard
section macros. Mark literal pool locations in the assembly sources.
Unfortunately assembler doesn't put literals into .init sections and
external libgcc may still have .literal sections, so sed transformation
to the linker script is still needed.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Mark _stext and _end as character arrays instead of single
character variables, like include/asm-generic/sections.h does.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David S . Miller <davem@davemloft.net>
Cc: Francis Deslauriers <francis.deslauriers@efficios.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: linux-arch@vger.kernel.org
Cc: linux-cris-kernel@axis.com
Cc: mathieu.desnoyers@efficios.com
Link: http://lkml.kernel.org/r/150172775958.27216.12951305461398200544.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Pull Xtensa fixes from Max Filippov:
- don't use linux IRQ #0 in legacy irq domains: fixes timer interrupt
assignment when it's hardware IRQ # is 0 and the kernel is built w/o
device tree support
- reduce reservation size for double exception vector literals from 48
to 20 bytes: fixes build on cores with small user exception vector
- cleanups: use kmalloc_array instead of kmalloc in simdisk_init and
seq_puts instead of seq_printf in c_show.
* tag 'xtensa-20170612' of git://github.com/jcmvbkbc/linux-xtensa:
xtensa: don't use linux IRQ #0
xtensa: reduce double exception literal reservation
xtensa: ISS: Use kmalloc_array() in simdisk_init()
xtensa: Use seq_puts() in c_show()
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A string which did not contain a data format specification should be put
into a sequence. Thus use the corresponding function "seq_puts".
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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There is ITLB_HIT_BIT macro, no need to use 0x8 to check for TLB hit.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Move platform_setup call higher in initialization sequence so that it
could change kernel command line.
Check command line passed to simulator in ISS platform_stup and update
kernel command line if there's anything.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Pull Xtensa updates from Max Filippov:
- clean up bootable image build targets: provide separate 'Image',
'zImage' and 'uImage' make targets that only build corresponding
image type. Make 'all' build all images appropriate for a platform
- allow merging vectors code into .text section as a preparation step
for XIP support
- fix handling external FDT when the kernel is built without
BLK_DEV_INITRD support
* tag 'xtensa-20170303' of git://github.com/jcmvbkbc/linux-xtensa:
xtensa: allow merging vectors into .text section
xtensa: clean up bootable image build targets
xtensa: move parse_tag_fdt out of #ifdef CONFIG_BLK_DEV_INITRD
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Currently code for exception/IRQ vectors is stored in kernel image as
initialization data and is copied to its working addresses during
startup. It doesn't always make sense. In many cases vectors location
can be automatically decided at kernel link time and code can be placed
right there. This is especially useful for XIP kernel.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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FDT tag parsing is not related to whether BLK_DEV_INITRD is configured
or not, move it out of the corresponding #ifdef/#endif block.
This fixes passing external FDT to the kernel configured w/o
BLK_DEV_INITRD support.
Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Pull Xtensa fix from Max Filippov:
"A for an Xtensa build error introduced in reset code refactoring
series in v4.9:
- fix noMMU build on cores with MMU"
* tag 'xtensa-20170202' of git://github.com/jcmvbkbc/linux-xtensa:
xtensa: fix noMMU build on cores with MMU
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Commit bf15f86b343ed8 ("xtensa: initialize MMU before jumping to reset
vector") calls MMU management functions even when CONFIG_MMU is not
selected. That breaks noMMU build on cores with MMU.
Don't manage MMU when CONFIG_MMU is not selected.
Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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The test is not called from any of the setup functions, so there's no
reason keeping it in the setup.c. Move it to s32c1i_selftest.c and drop
related #include directives.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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screen_info on xtensa has old style initializer without field names.
It was broken by the commit d9b263528e01 ("x86, setup: Store the boot
cursor state") that split the unused2 field into two.
Rewrite screen_info initialization with explicit field names.
Drop unused declarations/tentative definitions of RTC- and FD-related
structures. Drop inclusion of linux/timex.h when RTC is enabled in
configuration.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Pull Xtensa updates from Max Filippov:
"Updates for the xtensa architecture. It is a combined set of patches
for 4.8 that never got to the mainline and new patches for 4.9.
- add new kernel memory layouts for MMUv3 cores: with 256MB and 512MB
KSEG size, starting at physical address other than 0
- make kernel load address configurable
- clean up kernel memory layout macros
- drop sysmem early allocator and switch to memblock
- enable kmemleak and memory reservation from the device tree
- wire up new syscalls: userfaultfd, membarrier, mlock2,
copy_file_range, preadv2 and pwritev2
- add new platform: Cadence Configurable System Platform (CSP) and
new core variant for it: xt_lnx
- rearrange CCOUNT calibration code, make most of it generic
- improve machine reset code (XTFPGA now reboots reliably with MMUv3
cores)
- provide default memmap command line option for configurations
without device tree support
- ISS fixes: simdisk is now capable of using highmem pages, panic
correctly terminates simulator"
* tag 'xtensa-20161005' of git://github.com/jcmvbkbc/linux-xtensa: (24 commits)
xtensa: disable MMU initialization option on MMUv2 cores
xtensa: add default memmap and mmio32native options to defconfigs
xtensa: add default memmap option to common_defconfig
xtensa: add default memmap option to iss_defconfig
xtensa: ISS: allow simdisk to use high memory buffers
xtensa: ISS: define simc_exit and use it instead of inline asm
xtensa: xtfpga: group platform_* functions together
xtensa: rearrange CCOUNT calibration
xtensa: xtfpga: use clock provider, don't update DT
xtensa: Tweak xuartps UART driver Rx watermark for Cadence CSP config.
xtensa: initialize MMU before jumping to reset vector
xtensa: fix icountlevel setting in cpu_reset
xtensa: extract common CPU reset code into separate function
xtensa: Added Cadence CSP kernel configuration for Xtensa
xtensa: fix default kernel load address
xtensa: wire up new syscalls
xtensa: support reserved-memory DT node
xtensa: drop sysmem and switch to memblock
xtensa: minimize use of PLATFORM_DEFAULT_MEM_{ADDR,SIZE}
xtensa: cleanup MMU setup and kernel layout macros
...
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DT-enabled kernel should have a CPU node connected to a clock. This clock
is the CCOUNT clock. Use old platform_calibrate_ccount call as a fallback
when CPU node cannot be found or has no clock and in non-DT-enabled
configurations.
Drop no longer needed code that updates CPU clock-frequency property in
the DT; drop DT-related code from the platform_calibrate_ccount too.
Move of_clk_init to the top of time_init, so that clocks are initialized
before CCOUNT calibration is attempted.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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When reset is simulated MMU need to be brought into its initial state,
because that's what bootloaders/OS kernels assume. This is especially
important for MMUv3 because TLB state when the kernel is running is
significatly different from its reset state.
With this change it is possible to boot linux and get back to U-Boot
repeatedly.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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icountlevel SR value specifies lowest intlevel that does not do
instruction counting, so to disable instruction counting completely it
must be set to 0, not to 15.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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platform_restart implementatations do the same thing to reset CPU.
Don't duplicate that code, move it to a function and call it from
platform_restart.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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with default match table"
This partially reverts commit 69d99e6c0d62 keeping only the main
purpose of the original commit which is the removal of
of_platform_populate() call. The moving of of_clk_init() caused changes
in the initialization order breaking booting.
Fixes: 69d99e6c0d621f ("xtensa: Remove unnecessary of_platform_populate with default match table")
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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Commit 69d99e6c0d621f ("xtensa: Remove unnecessary of_platform_populate
with default match table") dropped various include files from
arch/xtensa/kernel/setup.c. This results in the following build error.
arch/xtensa/kernel/setup.c: In function ‘xtensa_dt_io_area’:
arch/xtensa/kernel/setup.c:213:2: error:
implicit declaration of function ‘of_read_ulong’
Fixes: 69d99e6c0d621f ("xtensa: Remove unnecessary of_platform_populate with default match table")
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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Memblock is the standard kernel boot-time memory tracker/allocator. Use
it instead of the custom sysmem allocator. This allows using kmemleak,
CMA and device tree memory reservation.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Now that the kernel load address and KSEG physical base address have
their own Kconfig symbols PLATFORM_DEFAULT_MEM seems redundant. It makes
little sense to use it in MMU configurations instead of KSEG_PADDR.
In noMMU configurations there's no explicit KSEG, so it's still useful
for the early cache initialization and definition of ARCH_PFN_OFFSET,
which affects mem_map size.
- limit it to noMMU; MMU variants have XCHAL_KSEG_PADDR and
XCHAL_KSEG_SIZE;
- don't use it to define TASK_SIZE or MAX_LOW_PFN: first doesn't make
any difference in noMMU, second is meaningless as there's no high
memory;
- don't add default physical memory region: memory layout should come
from the DT, bootloader tags, or memmap= command line parameter.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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After patch "of/platform: Add common method to populate default bus",
it is possible for arch code to remove unnecessary callers of
of_platform_populate with default match table.
Move of_clk_init() into time_init(), then drop xtensa_device_probe() fully.
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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There are multiple factors adding to the issue in different
configurations:
- commit 17290231df16eeee ("xtensa: add fixup for double exception raised
in window overflow") added function window_overflow_restore_a0_fixup to
double exception vector overlapping reset vector location of secondary
processor cores.
- on MMUv2 cores RESET_VECTOR1_VADDR may point to uncached kernel memory
making code overlapping depend on cache type and size, so that without
cache or with WT cache reset vector code overwrites double exception
code, making issue even harder to detect.
- on MMUv3 cores RESET_VECTOR1_VADDR may point to unmapped area, as
MMUv3 cores change virtual address map to match MMUv2 layout, but
reset vector virtual address is given for the original MMUv3 mapping.
- physical memory region of the secondary reset vector is not reserved
in the physical memory map, and thus may be allocated and overwritten
at arbitrary moment.
Fix it as follows:
- move window_overflow_restore_a0_fixup code to .text section.
- define RESET_VECTOR1_VADDR so that it points to reset vector in the
cacheable MMUv2 map for cores with MMU.
- reserve reset vector region in the physical memory map. Drop separate
literal section and build mxhead.S with text section literals.
Cc: <stable@vger.kernel.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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KIO region location is different for noMMU cores. Provide different
default physical address and make KIO virtual address equal to physical.
Move xtensa_get_kio_paddr function close to XCHAL_KIO_PADDR definition
and define it not only for MMUv3, but for all MMU options except MMUv2.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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printk and friends can now format bitmaps using '%*pb[l]'. cpumask
and nodemask also provide cpumask_pr_args() and nodemask_pr_args()
respectively which can be used to generate the two printf arguments
necessary to format the specified cpu/nodemask.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Make of_get_flat_dt_prop arguments compatible with libfdt fdt_getprop
call in preparation to convert FDT code to use libfdt. Make the return
value const and the property length ptr type an int.
Signed-off-by: Rob Herring <robh@kernel.org>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Tested-by: Grant Likely <grant.likely@linaro.org>
Tested-by: Stephen Chivers <schivers@csc.com>
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Unify the various architectures __dtb_start and __dtb_end definitions
moving them into of_fdt.h.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: James Hogan <james.hogan@imgtec.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: linux-metag@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux@lists.openrisc.net
Cc: linux-xtensa@linux-xtensa.org
Tested-by: Grant Likely <grant.likely@linaro.org>
Tested-by: Stephen Chivers <schivers@csc.com>
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This option is useful for reserving memory regions for secondary cores
in AMP configurations.
Implement the following memmap variants:
- memmap=nn[KMG]@ss[KMG]: force usage of a specific region of memory;
- memmap=nn[KMG]$ss[KMG]: mark specified memory as reserved;
- memmap=nn[KMG]: set end of memory.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Rewrite mem_reserve so that it keeps bank order.
Also make its return code more traditional.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Bootparam meminfo is a bootloader ABI, kernel meminfo is for the kernel
bookkeeping, keep them separate. Kernel doesn't care of memory region
types, so drop the type field and don't pass it to add_sysmem_bank.
Move kernel sysmem structures and prototypes to asm/sysmem.h and sysmem
variable and add_sysmem_bank to mm/init.c
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Use the simple-bus node to discover the io area, and remap the cached and
bypass io ranges. The parent-bus-address value of the first triplet in the
"ranges" property is used. This value is rounded down to the nearest 256MB
boundary. The length of the io area is fixed at 256MB; the "ranges" property
length value is ignored.
Other limitations: (1) only the first simple-bus node is considered, and (2)
only the first triplet of the "ranges" property is considered.
See ePAPR 1.1 §6.5 for the simple-bus node description, and §2.3.8 for the
"ranges" property description.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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This currently includes simple-bus.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
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This is largely based on SMP code from the xtensa-2.6.29-smp tree by
Piet Delaney, Marc Gauthier, Joe Taylor, Christian Zankel (and possibly
other Tensilica folks).
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
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Secondary CPUs need this declaration to initialize their MMUs.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
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Otherwise exceptions may occur prior to exception handling mechanism
initialization, resulting in silently dead system.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
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All arches do essentially the same thing now for
early_init_dt_setup_initrd_arch, so it can now be removed.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
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