Marek Vasut [Thu, 2 Mar 2023 03:08:38 +0000 (04:08 +0100)]
test: cmd: fdt: Test fdt rm
Add 'fdt rm' test which works as follows:
- Create fuller FDT, map it to sysmem
- Selectively delete nodes or properties by both path and aliases
- Verify created nodes or properties using fdt print command
The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:37 +0000 (04:08 +0100)]
test: cmd: fdt: Test fdt mknode
Add 'fdt mknode' test which works as follows:
- Create fuller FDT, map it to sysmem
- Create node either in / or subnode
- Attempt to create node over existing node, which fails
- Attempt to create subnodes in non-existing nodes or aliases
- Verify created nodes using fdt list command
The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:36 +0000 (04:08 +0100)]
test: cmd: fdt: Test fdt set
Add 'fdt set' test which works as follows:
- Create fuller FDT, map it to sysmem
- Set either existing property to overwrite it, or new property
- Test setting both single properties as well as string and integer arrays
- Test setting to non-existent nodes and aliases
- Verify set values using 'fdt get value'
The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:35 +0000 (04:08 +0100)]
test: cmd: fdt: Test fdt get size
Add 'fdt get size' test which works as follows:
- Create fuller FDT, map it to sysmem
- Get size of various properties
- Get node count of available nodes
- Test non-existent nodes and properties
The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:34 +0000 (04:08 +0100)]
test: cmd: fdt: Test fdt get addr
Add 'fdt get addr' test which works as follows:
- Create fuller FDT, map it to sysmem
- Get address of various properties
- Compare addresses calculated by UT and fdt command
This test is special in that it has to go through gruesome remapping scheme
where the test calculates:
- pointer offsets of the generated FDT root and the property being tested
- map_sysmem() result of environment variable "fdtaddr" and the one set
by the test matching address of property being tested
- difference between the later and the former, to obtain offset of the
DT property from start of DT
The offsets must match in both the UT and the tested U-Boot, if they do
not, the test fails.
The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:33 +0000 (04:08 +0100)]
test: cmd: fdt: Test fdt get name
Add 'fdt get name' test which works as follows:
- Create fuller FDT, map it to sysmem
- Get name of / node 0, 1 and /clk-test node 0
- Compare output and validate the node name
- Get name of / node 2 and /clk-test node 1
- Compare output and validate the node is not present
- Get name of / node -1 and /clk-test node -1
- Compare output and validate the node name equals node 0 name
- Check nonexistent node, verify the command errors out
The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:31 +0000 (04:08 +0100)]
test: cmd: fdt: Test fdt resize
Add 'fdt resize' test which works as follows:
- Create simple FDT with extra size 0, map it to sysmem
- 'resize' the FDT by 0x2000 bytes
- Verify the new space has been added to the FDT
The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:30 +0000 (04:08 +0100)]
test: cmd: fdt: Test fdt move
Add 'fdt move' test which works as follows:
- Create simple FDT, map it to sysmem
- 'move' the FDT into new zeroed out sysmem location
- Verify newly active FDT is in the new location
- Compare both locations
The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:29 +0000 (04:08 +0100)]
test: cmd: fdt: Test both string and integer arrays in 'fdt get value'
The 'fdt get value' subcommand now supports extraction of integer value
from integer arrays, add test for it, including a test for special case
unindexed integer array read, which is handled as hash and treated as a
long string instead of integer.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:27 +0000 (04:08 +0100)]
test: cmd: fdt: Generate fuller DT internally and switch fdt get value to it
Implement function to generate internal test DT fragment and switch
the 'fdt get value' test to this instead of depending on the sandbox
DT. Rename clk-test node to test-node node. This FDT fragment will be
reused by other tests. No functional change.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:26 +0000 (04:08 +0100)]
test: cmd: fdt: Rename fdt_test_get() to fdt_test_get_value()
The 'fdt get' command has a 'get value' subcommand, rename the fdt_test_get()
to fdt_test_get_value() to avoid confusion about what it is testing. There is
currently no get 'get name', 'get addr', 'get size' subcommand test.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:25 +0000 (04:08 +0100)]
test: cmd: fdt: Rename fdt_test_resize() to fdt_test_addr_resize()
The 'fdt' command has a 'resize' subcommand, rename the fdt_test_resize()
to fdt_test_addr_resize() to avoid confusion about what it is testing.
There is currently no resize test.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:23 +0000 (04:08 +0100)]
cmd: fdt: Add support for integer arrays in fdt get value with index
Currently any integer array value is set as long up-to-40 character
hexadecimal string into environment variable when extracted from an
FDT using 'fdt get value path prop index', because the support for
handling integer arrays is not implemented, and fdt_value_env_set()
code falls back into the hash handling behavior instead.
Implement this support simply by checking whether user supplied any
index. If index is set and the property length is multiple of four,
then this is an integer array, and the code would extract value at
specified index.
There is a subtle change where default index is set to -1 instead of 0.
This is OK, since the only place which checks for index to be less or
equal zero is the string array handling code in fdt_value_env_set() and
that code would work perfectly well with index -1 too.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:22 +0000 (04:08 +0100)]
cmd: fdt: Map address returned from fdt get addr to sysmem
The address returned from 'fdt get addr' command must be mapped
into sysmem, as this is a working FDT. Access to this address
without mapping it would lead to crash e.g. in sandbox.
The following command triggers the crash:
"
./u-boot -Dc 'fdt addr $fdtcontroladdr ; fdt get addr var / compatible ; md $var'
"
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:21 +0000 (04:08 +0100)]
cmd: fdt: Handle 64bit pointers in fdt get addr
The command assumed 32bit pointers so far, with 64bit pointer the
command would overwrite a piece of stack. Fix it by extending the
array size to cater for 64bit pointer, and use snprintf() to avoid
writing past the end of the array ever again.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:20 +0000 (04:08 +0100)]
cmd: fdt: Align checksign parameter names in help text
The help text references 'addr' as an optional key start address,
but the explanation references the same as 'start', make sure they
both read as 'addr'. Also update the abbreviated 'addr' in the
explanation to 'address'.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:19 +0000 (04:08 +0100)]
cmd: fdt: Check argc before accessing argv in fdt memory
On case 'fdt memory' is invoked without parameters, argv[2]/argv[3]
is not valid and this command would SEGFAULT in sandbox environment.
Add missing argc test to avoid the crash and rather print usage help
message.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:18 +0000 (04:08 +0100)]
cmd: fdt: Check argc before accessing argv in fdt bootcpu
On case 'fdt bootcpu' is invoked without parameters, argv[2] is not
valid and this command would SEGFAULT in sandbox environment. Add
missing argc test to avoid the crash and rather print usage help
message.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:17 +0000 (04:08 +0100)]
cmd: fdt: Fix fdt rsvmem behavior on non-existent index and error message space
In case 'fdt rsvmem delete index' is passed a non-existent index, one
which does not exist in 'fdt rsvmem print', then the following command
triggers a print of help message for 'fdt' command instead of erroring
out:
=> fdt rsvmem delete 1234
This is because the subcommand errornously returns 'err' instead of
CMD_RET_FAILURE, fix it. Furthermore, align the number of spaces past
fdt_del_mem_rsv() and fdt_add_mem_rsv() in error message with the rest
of the code.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:16 +0000 (04:08 +0100)]
cmd: fdt: Fix fdt rm behavior on non-existent property and error message space
In case an FDT contains a node '/test-node@1234' , with no property
called 'noprop' in that node, the following command triggers a print
of help message for 'fdt' command instead of erroring out:
=> fdt rm /test-node@1234 noprop
This is because the subcommand errornously returns 'err' instead of
CMD_RET_FAILURE, fix it. Furthermore, align the number of spaces past
fdt_delprop() in error message with the rest of the code.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:15 +0000 (04:08 +0100)]
cmd: fdt: Fix handling of empty properties for fdt get addr and fdt get size
It is perfectly valid to request an address or size of FDT property
without value, the only special case if requesting of the value of
FDT property without value. Invert the test such, that properties
without value still set the variable from 'fdt get addr/size' to
address of the property or size of the property, where the later
is 0.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Marek Vasut [Thu, 2 Mar 2023 03:08:14 +0000 (04:08 +0100)]
cmd: fdt: Import is_printable_string() from DTC to fix u32 misprint
Import is_printable_string() implementation from DTC 1.7.0 as of
DTC commit 039a994 ("Bump version to v1.7.0") . This fixes a print
of u32 property which so far used to be printed as string by U-Boot
fdt print command.
We might see the case where the parsed property value, in this case
it is a 32-bit integer, identified as a printable string or a null byte
(concatenated strings) because of its last character happens to be:
0x00 (null character), 0xB (vertical tab character) or
0x10 (line feed character)
In this situation, if the string is identified as printable string,
it will be displayed as character instead of hex value
When the isprint() condition is true, there are two possibilities:
1) The character is ASCII character (except the first 32)
2) The character is extended ASCII character
For example,
NG property in device tree:
clock-frequency = <16640000>;
by default, would be displayed as
clock-frequency = "", "ýè";
and with this patch applied, would be displayed as
clock-frequency = <0x00fde800>;
Full investigation was done by Nam and Hai, patch reworked by Marek
to use common code from DTC.
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com> Signed-off-by: Nam Nguyen <nam.nguyen.yh@renesas.com> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Simon Glass [Fri, 24 Feb 2023 01:18:13 +0000 (18:18 -0700)]
buildman: Add support for building a buildman PyPi package
Create the necessary files to build this new package.
It is not actually clear whether this is useful, since buildman has no
purpose outside U-Boot. It is included for completeness, since adding
this later would be more trouble.
Move the main program into a function so that it can easily be called by
the PyPi-created script.
Simon Glass [Fri, 24 Feb 2023 01:18:07 +0000 (18:18 -0700)]
patman: Avoid importing test_checkpatch before it is needed
Tests are not packaged with patman so this file will not be accessible
when installing with pip. Move the import later in the file, when we
know the file is present.
Simon Glass [Fri, 24 Feb 2023 01:18:05 +0000 (18:18 -0700)]
script: Add a script to build a PyPi package
Create a script which can package a tool for use with PyPi and the 'pip'
tool. This involves quite a few steps so is best automated. Future work
will enable use of this for some of the tools in U-Boot.
Simon Glass [Fri, 24 Feb 2023 01:18:04 +0000 (18:18 -0700)]
patman: Move library functions into a library directory
The patman directory has a number of modules which are used by other tools
in U-Boot. This makes it hard to package the tools using pypi since the
common files must be copied along with the tool that uses them.
To address this, move these files into a new u_boot_pylib library. This
can be packaged separately and listed as a dependency of each tool.
Simon Glass [Wed, 22 Feb 2023 19:17:04 +0000 (12:17 -0700)]
bootstd: Replicate the dtb-filename quirks of distroboot
For EFI, the distro boot scripts search in three different directories
for the .dtb file. The SOC-based filename fallback is supported only for
32-bit ARM.
Adjust the code to mirror this behaviour.
Also some boards can use a prior-stage FDT if one is not found in the
normal way. Support this and show a message in that case.
Signed-off-by: Simon Glass <sjg@chromium.org> Suggested-by: Mark Kettenis <kettenis@openbsd.org>
Simon Glass [Wed, 22 Feb 2023 19:14:49 +0000 (12:14 -0700)]
binman: Make the tooldir configurable
Add a command-line argument for setting the tooldir, so that the default
can be overridden. Add this directory to the toolpath automatically.
Create the directory if it does not already exist.
Put the default in the argument parser instead of the class, so that it
is more obvious.
Update a few tests that expect the utility name to be provided without
any path (e.g. 'futility'), so they can accept a path, e.g.
/path/to/futility
Update the documentation and add a few tests.
Improve the help for --toolpath while we are here.
Simon Glass [Wed, 22 Feb 2023 19:14:48 +0000 (12:14 -0700)]
binman: Use a private directory for bintools
At present binman writes tools into the ~/bin directory. This is
convenient but some may be concerned about downloading unverified
binaries and running them. Place then in a special ~/.binman-tools
directory instead.
Mention this in the documentation.
Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
Tom Rini [Tue, 7 Mar 2023 17:54:01 +0000 (12:54 -0500)]
Merge tag 'next-20230307' of https://source.denx.de/u-boot/custodians/u-boot-video into next
- video console refactoring and optimization
- support for fonts wider than 1 byte
- use named header for 8x16 font data
- support multiple fonts configuration
- move get_font_size() to truetype driver ops
- support font size configuration at runtime
- add 16x32 Terminus font from linux
- add 12x22 Sun font from linux
- add 12x22 console simple font test
Tom Rini [Tue, 7 Mar 2023 15:42:22 +0000 (10:42 -0500)]
Merge branch '2023-03-06-assorted-platform-updates' into next
- semihosting updates for arm and riscv, assorted arm64 core updates,
assorted ast2600 updates, remove some more unused code, some TI K3
defconfig and DTS updates, uniphier DTS updates, mpc83xx Kconfig
cleanup, re-add fttmr010 driver with an update to use DM.
video console: add support for fonts wider than 1 byte
Devices with high ppi may benefit from wider fonts.
Current width implementation is limited by 1 byte, i.e. 8 bits.
New version iterates VIDEO_FONT_BYTE_WIDTH times, to process all
width bytes, thus allowing fonts wider than 1 byte.
Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
- move common code to vidconsole_internal.h and console_core.c
- unite probe functions
- get rid of code duplications in switch across bpp values
- extract common pixel fill logic in two functions one per
horizontal and vertical filling
- rearrange statements in put_xy* methods in unified way
- replace types - uint*_t to u*
Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Andre Przywara [Tue, 7 Feb 2023 15:21:05 +0000 (15:21 +0000)]
riscv: semihosting: replace inline assembly with assembly file
So far we used inline assembly to inject the actual instruction that
triggers the semihosting service. While this sounds elegant, as it's
really only about a few instructions, it has some serious downsides:
- We need some barriers in place to force the compiler to issue writes
to a data structure before issuing the trap instruction.
- We need to convince the compiler to actually fill the structures that
we use pointers to.
- We need a memory clobber to avoid the compiler caching the data in
those structures, when semihosting writes data back.
- We need register arguments to make sure the function ID and the
pointer land in the right registers.
This is all doable, but fragile and somewhat cumbersome. Since we now
have a separate function in an extra file anyway, we can do away with
all the magic and just write that in an actual assembler.
This is much more readable and robust.
Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Sean Anderson <sean.anderson@seco.com>
Andre Przywara [Tue, 7 Feb 2023 15:21:04 +0000 (15:21 +0000)]
arm: semihosting: replace inline assembly with assembly file
So far we used inline assembly to inject the actual instruction that
triggers the semihosting service. While this sounds elegant, as it's
really only about one instruction, it has some serious downsides:
- We need some barriers in place to force the compiler to issue writes
to a data structure before issuing the trap instruction.
- We need to convince the compiler to actually fill the structures that
we use pointers to.
- We need a memory clobber to avoid the compiler caching the data in
those structures, when semihosting writes data back.
- We need register arguments to make sure the function ID and the
pointer land in the right registers.
This is all doable, but fragile and somewhat cumbersome. Since we now
have a separate function in an extra file anyway, we can do away with
all the magic and just write that in an actual assembly file.
This is much more readable and robust.
Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Sean Anderson <sean.anderson@seco.com>
Devarsh Thakkar [Mon, 6 Feb 2023 11:34:51 +0000 (17:04 +0530)]
am62a7: dts: Enable full 4GB LPDDR4
AM62A7-SK board has 4GB LPDDR4 Micron MT53E2G32D4DE-046 AUT:B part
but only 2GB was enabled early.
Enable full 4GB memory by updating the latter 2GB memory region
which gets mapped to 0x0880000000 i.e. DDR16SS0_SDRAM as referred in
Table 2-1. AM62A Common SoC Memory of AM62Ax TRM [1].
Kunihiko Hayashi [Tue, 28 Feb 2023 02:37:09 +0000 (11:37 +0900)]
ARM: dts: uniphier: Sync DT with Linux v6.2
Synchronize devicetree sources with Linux v6.2.
- Use GIC interrupt definitions
- Add reg properties in USB-glue and SoC-glue node
- Fix node names to follow the generic names list in DT specification
- Add L2 cache and AHCI nodes
- Update nand and pcie nodes
- And some trivial fixes
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Acked-by: Marek Vasut <marex@denx.de>
Christophe Leroy [Sun, 26 Feb 2023 09:44:09 +0000 (10:44 +0100)]
powerpc, mpc83xx: Remove CONFIG_ELBC_BRx_ORx
Commit fe7d654d04 ("mpc83xx: Migrate CONFIG_SYS_{BR, OR}*_PRELIM to
Kconfig") converted CONFIG_SYS_{BRx/ORx}_PRELIM to Kconfig by
implementing a fine-grained selection of every bit in Kconfig.
But commit c7fad78ec0 ("Convert CONFIG_SYS_BR0_PRELIM et al to
Kconfig") reworked it so that you now just have to provide the raw
value of each register in Kconfig. However, all fine-grained
Kconfig items remained allthough they are not used anymore.
Remove them all.
Fixes: c7fad78ec0 ("Convert CONFIG_SYS_BR0_PRELIM et al to Kconfig") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Manorit Chawdhry [Fri, 24 Feb 2023 05:07:49 +0000 (10:37 +0530)]
configs: j7200: Merge HS and non-HS defconfigs
K3 devices have runtime type board detection. Make the default defconfig
include the secure configuration. Then remove the HS specific config.
Non-HS devices will continue to boot due to runtime device type detection.
If TI_SECURE_DEV_PKG is not set the build will emit warnings, for non-HS
devices these can be ignored.
Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com> Acked-by: Andrew Davis <afd@ti.com>
Manorit Chawdhry [Fri, 24 Feb 2023 05:07:48 +0000 (10:37 +0530)]
configs: j721s2: merge HS and non-HS defconfigs
K3 devices have runtime type board detection. Make the default defconfig
include the secure configuration. Then remove the HS specific config.
Non-HS devices will continue to boot due to runtime device type detection.
If TI_SECURE_DEV_PKG is not set the build will emit warnings, for non-HS
devices these can be ignored.
Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com> Acked-by: Andrew Davis <afd@ti.com>
Marc Zyngier [Tue, 14 Feb 2023 13:38:14 +0000 (21:38 +0800)]
arm64: Reduce PT size estimation complexity
count_required_pts()'s complexity is high if mappings are not using the
largest possible block size (due to some other requirement such as tracking
dirty pages, for example).
Let's switch to a method that follows the pattern established with
the add_map() helper, and make it almost instantaneous instead of
taking a large amount of time if 2MB mappings are in use instead of
1GB.
Marc Zyngier [Tue, 14 Feb 2023 13:38:13 +0000 (21:38 +0800)]
arm64: Reduce add_map() complexity
In the add_map() function, for each level it populates, it iterates from
the root of the PT tree, making it ineficient if a mapping needs to occur
past level 1.
Instead, replace it with a recursive (and much simpler) algorithm
that keeps the complexity as low as possible. With this, mapping
512GB at level 2 goes from several seconds down to not measurable
on an A55 machine.
We keep the block mappings at level 1 for now though.
Sergei Antonov [Mon, 13 Feb 2023 17:34:36 +0000 (20:34 +0300)]
timer: fttmr010: return a previously deleted driver now ported to DM
The fttmr010 timer driver was deleted by
commit 29fc6f24926e ("ARM: remove a320evb board support")
The original source file was: arch/arm/cpu/arm920t/a320/timer.c
Return the driver to the codebase in a DM compatible form.
A platform using fttmr010 will be submitted later.
This hardware is described in the datasheet [1], starting from page 348.
According to the datasheet, there is a Revision Register at offset 0x3C,
which is not present in 'struct fttmr010'. Add it and debug() print
revision in probe function.
Memory used to hold the page tables is allocated from the top of RAM
with no prior initialization and could therefore hold invalid data. As
invalidate_dcache_all() will be called before the MMU has been
initialized and as that function relies indirectly on the page tables
when using CMO_BY_VA_ONLY, these must be in a valid state from their
allocation.
Marc Zyngier [Wed, 8 Feb 2023 20:54:27 +0000 (04:54 +0800)]
arm: cpu: Add optional CMOs by VA
Exposing set/way cache maintenance to a virtual machine is unsafe, not
least because the instructions are not permission-checked but also
because they are not broadcast between CPUs. Consequently, KVM traps and
emulates such maintenance in the host kernel using by-VA operations and
looping over the stage-2 page-tables. However, when running under
protected KVM, these instructions are not able to be emulated and will
instead result in an exception being delivered to the guest.
Introduce CONFIG_CMO_BY_VA_ONLY so that virtual platforms can select
this option and perform by-VA cache maintenance instead of using the
set/way instructions.
Tom Rini [Fri, 3 Mar 2023 17:48:23 +0000 (12:48 -0500)]
Merge branch '2023-03-02-kconfig-and-CONFIG-cleanups' into next
- Partial merge of a series of mine to select some framework options
that shouldn't be prompted for (and remove some unused code related to
that), and a partial merge of a series from Simon to remove some dead
code and address various CONFIG_IS_ENABLED/IS_ENABLED issues in code.