r309616 changed the definition of GICD_ITARGETSR(n) to take the irq
id as argument, but the usage of the macro in gic_cpu_mask() was not
updated to reflect this. This causes the cpu mask to be computed
incorrectly.
Update the GICD_ITARGETSR() call to fix this, this fixes a hang seen
while booting freebsd on qemu-system-aarch64 with SMP enabled.
Changes include modifications in kernel crash dump routines, dumpon(8) and
savecore(8). A new tool called decryptcore(8) was added.
A new DIOCSKERNELDUMP I/O control was added to send a kernel crash dump
configuration in the diocskerneldump_arg structure to the kernel.
The old DIOCSKERNELDUMP I/O control was renamed to DIOCSKERNELDUMP_FREEBSD11 for
backward ABI compatibility.
dumpon(8) generates an one-time random symmetric key and encrypts it using
an RSA public key in capability mode. Currently only AES-256-CBC is supported
but EKCD was designed to implement support for other algorithms in the future.
The public key is chosen using the -k flag. The dumpon rc(8) script can do this
automatically during startup using the dumppubkey rc.conf(5) variable. Once the
keys are calculated dumpon sends them to the kernel via DIOCSKERNELDUMP I/O
control.
When the kernel receives the DIOCSKERNELDUMP I/O control it generates a random
IV and sets up the key schedule for the specified algorithm. Each time the
kernel tries to write a crash dump to the dump device, the IV is replaced by
a SHA-256 hash of the previous value. This is intended to make a possible
differential cryptanalysis harder since it is possible to write multiple crash
dumps without reboot by repeating the following commands:
# sysctl debug.kdb.enter=1
db> call doadump(0)
db> continue
# savecore
A kernel dump key consists of an algorithm identifier, an IV and an encrypted
symmetric key. The kernel dump key size is included in a kernel dump header.
The size is an unsigned 32-bit integer and it is aligned to a block size.
The header structure has 512 bytes to match the block size so it was required to
make a panic string 4 bytes shorter to add a new field to the header structure.
If the kernel dump key size in the header is nonzero it is assumed that the
kernel dump key is placed after the first header on the dump device and the core
dump is encrypted.
Separate functions were implemented to write the kernel dump header and the
kernel dump key as they need to be unencrypted. The dump_write function encrypts
data if the kernel was compiled with the EKCD option. Encrypted kernel textdumps
are not supported due to the way they are constructed which makes it impossible
to use the CBC mode for encryption. It should be also noted that textdumps don't
contain sensitive data by design as a user decides what information should be
dumped.
savecore(8) writes the kernel dump key to a key.# file if its size in the header
is nonzero. # is the number of the current core dump.
decryptcore(8) decrypts the core dump using a private RSA key and the kernel
dump key. This is performed by a child process in capability mode.
If the decryption was not successful the parent process removes a partially
decrypted core dump.
Description on how to encrypt crash dumps was added to the decryptcore(8),
dumpon(8), rc.conf(5) and savecore(8) manual pages.
EKCD was tested on amd64 using bhyve and i386, mipsel and sparc64 using QEMU.
The feature still has to be tested on arm and arm64 as it wasn't possible to run
FreeBSD due to the problems with QEMU emulation and lack of hardware.
Designed by: def, pjd
Reviewed by: cem, oshogbo, pjd
Partial review: delphij, emaste, jhb, kib
Approved by: pjd (mentor)
Differential Revision: https://reviews.freebsd.org/D4712
will be used by the gicv2m and ITS ACPI drivers to only attach to the
correct parent.
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
- EMC clock have standard peripheral clock block. Use it.
- Implement full frequency set method for PLLD2. This PLL
is used as HDMI pixel clock so we must be able to set it
to wide range of frequencies, within 5% tolerance allowed
by HDMI specification. Due to this, full state space search
(over m, n, p fields) is necessary.
MFC after: 3 weeks
This function is referenced, but never called from DRM2 code. Also,
real behavior of pmap_mapdev_attr() in ARM world is unclear as we don't
have any additional attribute for a device memory type.
MFC after: 2 weeks
miibus_writereg.
Reduce the DELAY() between reads while waiting for MII access.
Spotted by: yongari
Sponsored by: Rubicon Communications, LLC (Netgate)
Writing the full queue size to it every time was makeing it overflow with a
lot of bogus values.
This fixes the interrupt storms on irq 40.
Sponsored by: Rubicon Communications, LLC (Netgate)
This allows the driver to be built in a kernel with no FDT support, e.g.
on arm64 with just ACPI.
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
can be selected for it. If the desired frequency is one of those two, use
this mode instead of the integer one.
When calculating the PLL3 freq for the dotclock, check if it is a multiple
of the fracional frequencies.
MFC after: 2 weeks
Adds VLAN and port management abilities for etherswitchcfg(8).
The code is conditionally enabled for now, because it is not necessary on
single ethernet use cases.
Obtained from: pfSense
MFC after: 2 weeks
Sponsored by: Rubicon Communications, LLC (Netgate)
FDT attachment to a new file. A separate ACPI attachment will then be added
to allow arm64 servers with ACPI to use it over FDT.
This should also help with merging this with the ofwpci driver, with
further work needed to remove restrictions this driver places on resource
allocation.
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D7319
Use "ti,am33xx" instead of "ti,am335x", which gives an exact match in every
DTS we support.
This fixes the boot on TI SoCs after r308533.
Suggested by: gonzo
Sponsored by: Rubicon Communications, LLC (Netgate)
the aintc driver for Allwinner A10.
This fixes the boot of the GENERIC ARM kernel on TI/AM335x SoCs.
Sponsored by: Rubicon Communications, LLC (Netgate)
While here:
- remove 'device mii' - included by miibus;
- remove 'device smcphy' - included by miibus;
- sorted the network drivers list;
- added a comment about miibus based on amd64/GENERIC.
Sponsored by: Rubicon Communications, LLC (Netgate)
under first_page cannot be taken as this variable is connected only to
vm_page_array segment. There could be more segments in system like
the ones for various fictitious page ranges. These can be situated
under vm_page_array segment and so, they could be skipped before this
fix. However, as far as I know, there is no report associated with it.
While here, the return type of this function is changed from boolean_t
to bool type.
Reviewed by: kib
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D8502
