Mark Rutland a2c1d73b94 arm64: Update the Image header ... Currently the kernel Image is stripped of everything past the initial stack, and at runtime the memory is initialised and used by the kernel. This makes the effective minimum memory footprint of the kernel larger than the size of the loaded binary, though bootloaders have no mechanism to identify how large this minimum memory footprint is. This makes it difficult to choose safe locations to place both the kernel and other binaries required at boot (DTB, initrd, etc), such that the kernel won't clobber said binaries or other reserved memory during initialisation. Additionally when big endian support was added the image load offset was overlooked, and is currently of an arbitrary endianness, which makes it difficult for bootloaders to make use of it. It seems that bootloaders aren't respecting the image load offset at present anyway, and are assuming that offset 0x80000 will always be correct. This patch adds an effective image size to the kernel header which describes the amount of memory from the start of the kernel Image binary which the kernel expects to use before detecting memory and handling any memory reservations. This can be used by bootloaders to choose suitable locations to load the kernel and/or other binaries such that the kernel will not clobber any memory unexpectedly. As before, memory reservations are required to prevent the kernel from clobbering these locations later. Both the image load offset and the effective image size are forced to be little-endian regardless of the native endianness of the kernel to enable bootloaders to load a kernel of arbitrary endianness. Bootloaders which wish to make use of the load offset can inspect the effective image size field for a non-zero value to determine if the offset is of a known endianness. To enable software to determine the endinanness of the kernel as may be required for certain use-cases, a new flags field (also little-endian) is added to the kernel header to export this information. The documentation is updated to clarify these details. To discourage future assumptions regarding the value of text_offset, the value at this point in time is removed from the main flow of the documentation (though kept as a compatibility note). Some minor formatting issues in the documentation are also corrected. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Tom Rini <trini@ti.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Kevin Hilman <kevin.hilman@linaro.org> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2014-07-10 12:36:40 +01:00
..
ABI	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-06-12 14:27:40 -07:00
DocBook	Documentation: Fix DocBook build with relative $(srctree)	2014-06-18 19:21:42 +02:00
EDID	drm: Add 800x600 (SVGA) screen resolution to the built-in EDIDs	2014-05-26 12:53:40 +10:00
PCI	Merge branch 'pci/dead-code' into next	2014-02-20 14:32:34 -07:00
RCU	documentation: Update API documentation	2014-04-29 08:38:53 -07:00
accounting	Documentation/accounting/getdelays.c: add missing null-terminate after strncpy call	2014-06-23 16:47:44 -07:00
acpi	Documentation / ACPI: Fix location of GPIO documentation	2014-05-23 14:39:26 +02:00
aoe	aoe: remove do-nothing NAME="%k" term from example udev rules	2013-09-11 15:59:28 -07:00
arm	Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into next	2014-06-05 15:57:04 -07:00
arm64	arm64: Update the Image header	2014-07-10 12:36:40 +01:00
auxdisplay	…
backlight	backlight: lp855x_bl: support new LP8555 device	2013-11-13 12:09:14 +09:00
blackfin	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
block	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
blockdev	zram: propagate error to user	2014-04-07 16:36:02 -07:00
bus-devices	…
cdrom	…
cgroups	Merge branch 'for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2014-06-09 15:03:33 -07:00
connector	w1: optional bundling of netlink kernel replies	2014-05-27 13:56:21 -07:00
console	TTY:console: update document console.txt	2013-05-21 10:21:57 -07:00
cpu-freq	cpufreq: add support for intermediate (stable) frequencies	2014-06-05 23:32:29 +02:00
cpuidle	cpuidle: remove cpuidle_unregister_governor()	2013-10-30 01:21:24 +01:00
cris	…
crypto	drivers/dma: remove unused support for MEMSET operations	2013-07-03 16:07:42 -07:00
development-process	Documentation: development-process: Update -mm and -next URLs	2013-07-25 12:37:24 +02:00
device-mapper	dm thin: add 'no_space_timeout' dm-thin-pool module param	2014-05-20 14:30:36 -04:00
devicetree	Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm	2014-06-29 13:40:08 -07:00
driver-model	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-06-12 14:27:40 -07:00
dvb	Linux 3.14-rc5	2014-03-11 06:55:49 -03:00
early-userspace	Documentation: remove reference to 2.7 kernel in early-userspace	2013-08-20 12:47:28 +02:00
extcon	extcon: fix switch class porting guide (Documentation)	2014-01-07 11:54:28 +09:00
fault-injection	…
fb	doc: spelling error changes	2014-05-05 15:32:05 +02:00
filesystems	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
firmware_class	…
fmc	FMC: make eeprom attribute writable	2014-02-28 15:12:08 -08:00
frv	…
gpio	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
hwmon	hwmon: (ntc_thermistor) Use the manufacturer name properly	2014-06-25 07:09:13 -07:00
i2c	Documentation: i2c: improve section about flags mangling the protocol	2014-04-06 13:53:48 +02:00
i2o	…
ia64	…
ide	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
infiniband	…
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
ioctl	s390/hypfs: add interface for diagnose 0x304	2014-01-24 09:40:59 +01:00
isdn	…
ja_JP	Documentation: Update stable address in Chinese and Japanese translations	2014-04-16 14:13:27 -07:00
kbuild	kbuild: fix a typo in a kbuild document	2014-06-18 21:38:18 +02:00
kdump	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-07-04 11:40:58 -07:00
ko_KR	Documentation: HOWTO: Updates on subsystem trees, patchwork, -next (vs. -mm) in ko_KR	2014-01-08 15:32:51 -08:00
laptops	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
leds	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
m68k	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
make	…
memory-devices	…
metag	doc: fix misspellings with 'codespell' tool	2013-05-28 12:02:12 +02:00
mic	misc: mic: Fix endianness issues.	2013-11-27 11:03:38 -08:00
mips	…
misc-devices	Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	2014-01-29 18:56:27 -08:00
mmc	…
mn10300	…
mtd	MTD updates for 3.16:	2014-06-11 08:35:34 -07:00
namespaces	…
netlabel	…
networking	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-06-12 14:27:40 -07:00
nfc	…
parisc	parisc: document the shadow registers	2013-07-09 22:09:19 +02:00
pcmcia	…
phy	phy: Add new Exynos USB 2.0 PHY driver	2014-03-08 12:39:44 +05:30
platform	Documentation: Add list of laptop models supported by the Compal driver	2014-06-10 19:11:06 -04:00
power	PM / Documentation: Update copyright in suspend-and-cpuhotplug.txt	2014-06-09 22:54:15 +02:00
powerpc	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-06-10 18:54:22 -07:00
pps	USB: serial: invoke dcd_change ldisc's handler.	2013-09-26 09:45:40 -07:00
prctl	…
pti	…
ptp	ptp: In the testptp utility, use clock_adjtime from glibc when available	2014-06-16 21:32:31 -07:00
rapidio	rapidio: rework device hierarchy and introduce mport class of devices	2014-04-07 16:36:07 -07:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
scheduler	asm/system.h: clean asm/system.h from docs	2014-04-07 16:36:11 -07:00
scsi	qla2xxx: Change copyright year to 2014 in all the source files.	2014-05-19 13:31:02 +02:00
security	Merge branch 'serge-next-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sergeh/linux-security	2014-06-10 10:05:36 -07:00
serial	tty/serial: Add GPIOLIB helpers for controlling modem lines	2014-05-28 12:49:14 -07:00
sh	…
sound	ALSA: hda - Adjust speaker HPF and add LED support for HP Spectre 13	2014-06-25 17:50:24 +02:00
spi	Merge remote-tracking branches 'spi/topic/s3c64xx', 'spi/topic/sc18is602', 'spi/topic/sh-hspi', 'spi/topic/sh-msiof', 'spi/topic/sh-sci', 'spi/topic/sirf' and 'spi/topic/spidev' into spi-next	2014-03-30 00:51:34 +00:00
sysctl	kernel/watchdog.c: print traces for all cpus on lockup detection	2014-06-23 16:47:44 -07:00
target	target: Remove TF_CIT_TMPL macro	2013-10-16 13:35:02 -07:00
thermal	drm/nouveau/doc: update the thermal documentation	2014-06-17 14:50:17 +10:00
timers	timer_stats/doc: Fix /proc/timer_stats documentation	2014-05-04 20:46:32 +02:00
tpm	drivers/tpm: add xen tpmfront interface	2013-08-09 10:57:06 -04:00
trace	mm:vmscan: update the trace-vmscan-postprocess.pl for event vmscan/mm_vmscan_lru_isolate	2014-07-03 09:21:54 -07:00
usb	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
vDSO	x86/vdso/doc: Make vDSO examples more portable	2014-06-12 19:01:24 -07:00
video4linux	[media] exynos4-is: Remove support for non-dt platforms	2014-05-23 18:52:54 -03:00
virtual	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
vm	mm: mark remap_file_pages() syscall as deprecated	2014-06-06 16:08:17 -07:00
w1	w1: optional bundling of netlink kernel replies	2014-05-27 13:56:21 -07:00
watchdog	watchdog: it87_wdt: Work around non-working CIR interrupts	2014-03-31 13:33:55 +02:00
wimax	…
x86	Merge branch 'x86/espfix' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-05 07:46:15 -07:00
xtensa	xtensa: remap io area defined in device tree	2014-01-15 00:25:14 +04:00
zh_CN	driver core fixes for 3.15-rc2	2014-04-18 16:59:52 -07:00
.gitignore	…
00-INDEX	Merge branch 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-04-02 13:15:58 -07:00
BUG-HUNTING	…
Changes	doc: Note need of bc in the kernel build from 3.10 onwards	2014-05-19 16:27:20 +02:00
CodingStyle	Documentation: expand/clarify debug documentation	2014-06-04 16:54:17 -07:00
DMA-API-HOWTO.txt	DMA-API: Update dma_pool_create ()and dma_pool_alloc() descriptions	2014-05-26 17:28:28 -06:00
DMA-API.txt	DMA-API: Capitalize "CPU" consistently	2014-05-26 17:28:27 -06:00
DMA-ISA-LPC.txt	DMA-API: Clarify physical/bus address distinction	2014-05-20 16:54:21 -06:00
DMA-attributes.txt	doc: spelling error changes	2014-05-05 15:32:05 +02:00
HOWTO	Documentation: HOWTO: Update broken links to tpp	2013-12-10 23:09:08 -08:00
IPMI.txt	…
IRQ-affinity.txt	doc: fix a typo about irq affinity	2013-08-20 12:59:18 +02:00
IRQ-domain.txt	genirq: Improve documentation to match current implementation	2014-05-27 10:16:44 +02:00
IRQ.txt	…
Intel-IOMMU.txt	…
Makefile	…
ManagementStyle	…
SAK.txt	…
SM501.txt	…
SecurityBugs	…
SubmitChecklist	Finally eradicate CONFIG_HOTPLUG	2013-06-03 14:20:18 -07:00
SubmittingDrivers	…
SubmittingPatches	Documentation/SubmittingPatches: describe the Fixes: tag	2014-06-06 16:08:11 -07:00
VGA-softcursor.txt	…
applying-patches.txt	…
assoc_array.txt	KEYS: Fix multiple key add into associative array	2013-12-02 11:24:18 +00:00
atomic_ops.txt	arch,doc: Convert smp_mb__*()	2014-04-18 14:20:48 +02:00
bad_memory.txt	…
basic_profiling.txt	…
bcache.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-07-04 11:40:58 -07:00
binfmt_misc.txt	…
braille-console.txt	…
bt8xxgpio.txt	…
btmrvl.txt	…
bus-virt-phys-mapping.txt	…
cachetlb.txt	Documentation: fix typo and update version in cachetlb.txt	2013-08-20 12:46:52 +02:00
circular-buffers.txt	documentation: Update circular buffer for load-acquire/store-release	2013-12-03 10:08:57 -08:00
clk.txt	clk: Improve clk_ops documentation	2014-05-12 17:08:33 -07:00
coccinelle.txt	Coccinelle: Update information about the minimal version required	2013-07-03 22:58:20 +02:00
cpu-hotplug.txt	Doc/cpu-hotplug: Specify race-free way to register CPU hotplug callbacks	2014-03-20 13:43:40 +01:00
cpu-load.txt	…
cputopology.txt	doc: Documentation/cputopology.txt fix typo	2013-09-04 12:59:47 +02:00
crc32.txt	…
dcdbas.txt	…
debugging-modules.txt	…
debugging-via-ohci1394.txt	firewire: revert to 4 GB RDMA, fix protocols using Memory Space	2014-05-29 15:50:30 +02:00
dell_rbu.txt	…
devices.txt	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2014-04-04 09:50:07 -07:00
digsig.txt	…
dma-buf-sharing.txt	doc: spelling error changes	2014-05-05 15:32:05 +02:00
dmaengine.txt	…
dmatest.txt	dmatest: add a 'wait' parameter	2013-11-14 11:04:40 -08:00
dontdiff	Documentation: LLVMLinux: Update Documentation/dontdiff	2014-04-09 13:44:34 -07:00
dynamic-debug-howto.txt	doc: spelling error changes	2014-05-05 15:32:05 +02:00
edac.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
efi-stub.txt	doc: arm64: add description of EFI stub support	2014-04-30 19:57:05 +01:00
eisa.txt	…
email-clients.txt	Documentation: add section about git to email-clients.txt	2014-06-29 13:38:33 -07:00
flexible-arrays.txt	…
futex-requeue-pi.txt	doc: fix double words	2014-03-21 13:16:58 +01:00
gcov.txt	gcov: compile specific gcov implementation based on gcc version	2013-11-13 12:09:34 +09:00
highuid.txt	…
hsi.txt	Documentation: HSI: Add some general description for the HSI subsystem	2014-05-04 09:49:46 +02:00
hw_random.txt	…
hwspinlock.txt	doc: documentation/hwspinlock.txt fix typo	2013-08-27 10:46:02 +02:00
init.txt	…
initrd.txt	…
intel_txt.txt	…
io-mapping.txt	doc: fix some typos	2013-12-02 14:48:28 +01:00
io_ordering.txt	…
iostats.txt	…
irqflags-tracing.txt	asm/system.h: clean asm/system.h from docs	2014-04-07 16:36:11 -07:00
isapnp.txt	…
java.txt	Documentation: update java sample wrapper for java 7	2014-05-25 12:39:00 -07:00
kernel-doc-nano-HOWTO.txt	kernel-doc: Update references to SGML to refs to XML instead.	2013-05-28 12:02:11 +02:00
kernel-docs.txt	…
kernel-parameters.txt	kernel/watchdog.c: print traces for all cpus on lockup detection	2014-06-23 16:47:44 -07:00
kernel-per-CPU-kthreads.txt	Documentation/kernel-per-CPU-kthreads.txt: Workqueue affinity	2014-02-17 14:56:08 -08:00
kmemcheck.txt	doc: fix double words	2014-03-21 13:16:58 +01:00
kmemleak.txt	mm: introduce kmemleak_update_trace()	2014-06-06 16:08:17 -07:00
kobject.txt	kobject: remove kset from sysfs immediately in kset_unregister()	2013-12-07 21:20:11 -08:00
kprobes.txt	kprobes: Introduce NOKPROBE_SYMBOL() macro to maintain kprobes blacklist	2014-04-24 10:02:56 +02:00
kref.txt	…
ldm.txt	…
local_ops.txt	…
lockdep-design.txt	…
lockstat.txt	lockstat: Report avg wait and hold times	2013-10-09 08:19:08 +02:00
lockup-watchdogs.txt	…
logo.gif	…
logo.txt	…
magic-number.txt	Documentation/serial: Delete obsolete driver documentation	2014-04-16 14:20:34 -07:00
md.txt	doc: fix some typos in documentations	2013-12-02 14:45:19 +01:00
media-framework.txt	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2013-07-13 12:09:57 -07:00
memory-barriers.txt	Documentation/memory-barriers.txt: fix important typo re memory barriers	2014-06-06 16:08:11 -07:00
memory-hotplug.txt	mm, hotplug: probe interface is available on several platforms	2014-06-23 16:47:43 -07:00
module-signing.txt	Nothing major: the stricter permissions checking for sysfs broke	2014-04-06 09:38:07 -07:00
mono.txt	…
mutex-design.txt	locking/mutexes: Documentation update/rewrite	2014-06-05 13:29:37 +02:00
nommu-mmap.txt	…
numastat.txt	…
oops-tracing.txt	Use 'E' instead of 'X' for unsigned module taint flag.	2014-03-31 14:52:43 +10:30
padata.txt	…
parport-lowlevel.txt	…
parport.txt	…
percpu-rw-semaphore.txt	…
phy.txt	drivers: phy: Add support for optional phys	2014-02-05 05:48:43 +00:00
pi-futex.txt	…
pinctrl.txt	pinctrl: Fix some typos and grammar issues in the documentation	2014-01-15 13:59:50 +01:00
pnp.txt	…
preempt-locking.txt	…
printk-formats.txt	doc: printk-formats: do not mention casts for u64/s64	2014-05-05 15:32:42 +02:00
pwm.txt	pwm: modify PWM_LOOKUP to initialize all struct pwm_lookup members	2014-05-21 11:19:36 +02:00
ramoops.txt	…
rbtree.txt	doc: spelling error changes	2014-05-05 15:32:05 +02:00
remoteproc.txt	…
rfkill.txt	doc: spelling error changes	2014-05-05 15:32:05 +02:00
robust-futex-ABI.txt	Documentation/robust-futex-API: Count properly to 4	2013-11-30 14:08:28 +01:00
robust-futexes.txt	doc: spelling error changes	2014-05-05 15:32:05 +02:00
rpmsg.txt	…
rt-mutex-design.txt	doc: fix some typos in documentations	2013-12-02 14:45:19 +01:00
rt-mutex.txt	…
rtc.txt	rtc: add ability to push out an existing wakealarm using sysfs	2013-07-03 16:07:54 -07:00
serial-console.txt	…
sgi-ioc4.txt	…
smsc_ece1099.txt	…
sparse.txt	…
spinlocks.txt	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
stable_api_nonsense.txt	…
stable_kernel_rules.txt	stable_kernel_rules: spelling/word usage	2014-04-16 14:13:26 -07:00
static-keys.txt	doc: fix some typos in documentations	2013-12-02 14:45:19 +01:00
svga.txt	…
sysfs-rules.txt	doc: Fix typo in doucmentations	2013-07-25 12:34:15 +02:00
sysrq.txt	sysrq: Allow magic SysRq key functions to be disabled through Kconfig	2013-10-16 13:01:44 -07:00
this_cpu_ops.txt	…
unaligned-memory-access.txt	ether_addr_equal: Optimize implementation, remove unused compare_ether_addr	2013-12-06 16:37:43 -05:00
unicode.txt	…
unshare.txt	…
vfio.txt	vfio: fix documentation	2013-09-05 16:36:21 -06:00
vgaarbiter.txt	…
video-output.txt	…
vme_api.txt	VME: Rename vme_slot_get to avoid confusion with reference counting	2013-12-03 11:15:58 -08:00
volatile-considered-harmful.txt	…
workqueue.txt	workqueue: Correct/Drop references to gcwq in Documentation	2013-08-21 10:32:09 -04:00
ww-mutex-design.txt	mutex: Add support for wound/wait style locks	2013-06-26 12:10:56 +02:00
xz.txt	…
zorro.txt	zorro/UAPI: Disintegrate include/linux/zorro*.h	2013-11-26 11:09:08 +01:00