WSL2-Linux-Kernel

История

Bernhard Walle 69ac9cd629 sysfs: add /sys/firmware/memmap This patch adds /sys/firmware/memmap interface that represents the BIOS (or Firmware) provided memory map. The tree looks like: /sys/firmware/memmap/0/start (hex number) end (hex number) type (string) ... /1/start end type With the following shell snippet one can print the memory map in the same form the kernel prints itself when booting on x86 (the E820 map). --------- 8< -------------------------- #!/bin/sh cd /sys/firmware/memmap for dir in * ; do start=$(cat $dir/start) end=$(cat $dir/end) type=$(cat $dir/type) printf "%016x-%016x (%s)\n" $start $[ $end +1] "$type" done --------- >8 -------------------------- That patch only provides the needed interface: 1. The sysfs interface. 2. The structure and enumeration definition. 3. The function firmware_map_add() and firmware_map_add_early() that should be called from architecture code (E820/EFI, for example) to add the contents to the interface. If the kernel is compiled without CONFIG_FIRMWARE_MEMMAP, the interface does nothing without cluttering the architecture-specific code with #ifdef's. The purpose of the new interface is kexec: While /proc/iomem represents the used memory map (e.g. modified via kernel parameters like 'memmap' and 'mem'), the /sys/firmware/memmap tree represents the unmodified memory map provided via the firmware. So kexec can: - use the original memory map for rebooting, - use the /proc/iomem for setting up the ELF core headers for kdump case that should only represent the memory of the system. The patch has been tested on i386 and x86_64. Signed-off-by: Bernhard Walle <bwalle@suse.de> Acked-by: Greg KH <gregkh@suse.de> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: kexec@lists.infradead.org Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>		2008-07-08 17:55:41 +02:00
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ABI	…
DocBook	…
PCI	…
RCU	…
accounting	…
acpi	…
aoe	…
arm	…
auxdisplay	…
blackfin	…
block	…
cdrom	…
connector	…
console	…
controllers	…
cpu-freq	…
cpuidle	…
cris	…
crypto	…
device-mapper	…
driver-model	…
dvb	…
early-userspace	…
fault-injection	…
fb	…
filesystems	…
firmware_class	…
frv	…
hwmon	…
i2c	…
i2o	…
ia64	…
ide	…
infiniband	…
input	…
ioctl	…
isdn	…
ja_JP	…
kbuild	…
kdump	…
ko_KR	…
laptops	…
lguest	…
m68k	…
make	…
mips	…
mn10300	…
namespaces	…
netlabel	…
networking	…
parisc	…
pcmcia	…
power	…
powerpc	…
prctl	…
s390	…
scheduler	…
scsi	…
serial	…
sh	…
sound	…
sparc	…
spi	…
sysctl	…
telephony	…
thermal	…
timers	…
uml	…
usb	…
video4linux	…
vm	…
w1	…
watchdog	…
x86	…
zh_CN	…
00-INDEX	…
BUG-HUNTING	…
Changes	…
CodingStyle	…
DMA-API.txt	…
DMA-ISA-LPC.txt	…
DMA-attributes.txt	…
DMA-mapping.txt	…
HOWTO	…
IO-mapping.txt	…
IPMI.txt	…
IRQ-affinity.txt	…
IRQ.txt	…
Intel-IOMMU.txt	…
MSI-HOWTO.txt	…
ManagementStyle	…
README.DAC960	…
README.cycladesZ	…
SAK.txt	…
SM501.txt	…
SecurityBugs	…
Smack.txt	…
SubmitChecklist	…
SubmittingDrivers	…
SubmittingPatches	…
VGA-softcursor.txt	…
applying-patches.txt	…
atomic_ops.txt	…
basic_profiling.txt	…
binfmt_misc.txt	…
braille-console.txt	…
cachetlb.txt	…
cciss.txt	…
cgroups.txt	…
cli-sti-removal.txt	…
computone.txt	…
cpqarray.txt	…
cpu-hotplug.txt	…
cpu-load.txt	…
cpusets.txt	…
cputopology.txt	…
dcdbas.txt	…
debugging-modules.txt	…
debugging-via-ohci1394.txt	…
dell_rbu.txt	…
devices.txt	…
digiepca.txt	…
dontdiff	…
edac.txt	…
eisa.txt	…
email-clients.txt	…
exception.txt	…
feature-removal-schedule.txt	…
floppy.txt	…
gpio.txt	…
hayes-esp.txt	…
highuid.txt	…
hpet.txt	…
hw_random.txt	…
initrd.txt	…
io_ordering.txt	…
ioctl-number.txt	…
iostats.txt	…
irqflags-tracing.txt	…
isapnp.txt	…
java.txt	…
kernel-doc-nano-HOWTO.txt	…
kernel-docs.txt	…
kernel-parameters.txt	…
keys-request-key.txt	…
keys.txt	…
kobject.txt	…
kprobes.txt	…
kref.txt	…
ldm.txt	…
leds-class.txt	…
local_ops.txt	…
lockdep-design.txt	…
lockstat.txt	…
logo.gif	…
logo.txt	…
magic-number.txt	…
markers.txt	…
mca.txt	…
md.txt	…
memory-barriers.txt	…
memory-hotplug.txt	…
memory.txt	…
mono.txt	…
moxa-smartio	…
mtrr.txt	…
mutex-design.txt	…
nbd.txt	…
nmi_watchdog.txt	…
nommu-mmap.txt	…
numastat.txt	…
oops-tracing.txt	…
paride.txt	…
parport-lowlevel.txt	…
parport.txt	…
pi-futex.txt	…
pnp.txt	…
preempt-locking.txt	…
prio_tree.txt	…
ramdisk.txt	…
rbtree.txt	…
rfkill.txt	…
riscom8.txt	…
robust-futex-ABI.txt	…
robust-futexes.txt	…
rocket.txt	…
rt-mutex-design.txt	…
rt-mutex.txt	…
rtc.txt	…
serial-console.txt	…
sgi-ioc4.txt	…
sgi-visws.txt	…
sparse.txt	…
specialix.txt	…
spinlocks.txt	…
stable_api_nonsense.txt	…
stable_kernel_rules.txt	…
stallion.txt	…
svga.txt	…
sx.txt	…
sysfs-rules.txt	…
sysrq.txt	…
tty.txt	…
unaligned-memory-access.txt	…
unicode.txt	…
unshare.txt	…
video-output.txt	…
volatile-considered-harmful.txt	…
voyager.txt	…
zorro.txt	…

README.cycladesZ

The Cyclades-Z must have firmware loaded onto the card before it will
operate.  This operation should be performed during system startup,

The firmware, loader program and the latest device driver code are
available from Cyclades at
    ftp://ftp.cyclades.com/pub/cyclades/cyclades-z/linux/