Commit graph

1859 commits

Author SHA1 Message Date
Pali Rohár
1b3e68203c xyz-modem: Allow to configure initial timeout for loadx and loady
Now when loadx and loady commands could be aborted / cancelled by CTRL+C,
allow to configure timeout for initial x/y-modem packet via env variable
$loadxy_timeout and by default use value from new compile-time config
option CONFIG_CMD_LOADXY_TIMEOUT. Value is in seconds and zero value means
infinite timeout. Default value is 90s which is the value used before this
change for loadx command.

Other load commands loadb and loads already waits infinitely. Same behavior
for loadx and loady commands can be achieved by setting $loadxy_timeout or
CONFIG_CMD_LOADXY_TIMEOUT to 0.

Signed-off-by: Pali Rohár <pali@kernel.org>
2022-09-15 09:55:30 -04:00
Tom Rini
1520af3f84 Pull request for efi next
UEFI:
 
 Implement a command eficonfig to maintain Load Options and boot order via
 menus.
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Merge tag 'efi-next-2022-09-14' of https://source.denx.de/u-boot/custodians/u-boot-efi into next

Pull request for efi next

UEFI:

Implement a command eficonfig to maintain Load Options and boot order via
menus.
2022-09-14 12:31:44 -04:00
Masahisa Kojima
e5948ee301 eficonfig: add "Change Boot Order" menu entry
This commit adds the menu entry to update UEFI BootOrder variable.
User moves the entry with UP/DOWN key, changes the order
with PLUS/MINUS key, press SPACE to activate or deactivate
the entry, then finalizes the order by ENTER key.
If the entry is activated, the boot index is added into the
BootOrder variable in the order of the list.

The U-Boot menu framework is well designed for static menu,
this commit implements the own menu display and key handling
for dynamically change the order of menu entry.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
2022-09-14 08:43:32 +02:00
Masahisa Kojima
b5135a1e5b eficonfig: scan media device in eficonfig startup
In eficonfig startup, scan media devices and update
the UEFI boot option.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
2022-09-14 08:43:32 +02:00
Masahisa Kojima
c416f1c0bc bootmenu: add removable media entries
UEFI specification requires booting from removal media using
a architecture-specific default image name such as BOOTAA64.EFI.
This commit adds the removable media entries into bootmenu,
so that user can select the removable media and boot with
default image.

The bootmenu automatically enumerates the possible bootable
media devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL,
add it as new UEFI boot option(BOOT####) and update BootOrder
variable. This automatically generated UEFI boot option
has the dedicated guid in the optional_data to distinguish it from
the UEFI boot option user adds manually. This optional_data is
removed when the efi bootmgr loads the selected UEFI boot option.

This commit also provides the BOOT#### variable maintenance feature.
Depending on the system hardware setup, some devices
may not exist at a later system boot, so bootmenu checks the
available device in each bootmenu invocation and automatically
removes the BOOT#### variable corrensponding to the non-existent
media device.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
2022-09-14 08:43:32 +02:00
Masahisa Kojima
bb8498aad6 eficonfig: add "Delete Boot Option" menu entry
This commit adds the menu entry to delete the UEFI boot option.
User moves the entry with UP/DOWN key, changes, then presses
ENTER key to delete the selected boot option.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
2022-09-14 08:43:32 +02:00
Masahisa Kojima
e34158bc33 eficonfig: add "Edit Boot Option" menu entry
This commit adds the menu entry to edit the existing
BOOT#### variable contents.
User selects the item from the boot option list, then
user can edit the description, file path and optional_data.

Note that automatically generated boot option entry by bootmenu
to support the removable media device is filtered out and user
can not edit the automatically generated entry.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
2022-09-14 08:43:31 +02:00
Masahisa Kojima
87d791423a eficonfig: menu-driven addition of UEFI boot option
This commit add the "eficonfig" command.
The "eficonfig" command implements the menu-driven UEFI boot option
maintenance feature. This commit implements the addition of
new boot option. User can select the block device volume having
efi_simple_file_system_protocol and select the file corresponding
to the Boot#### variable. User can also enter the description and
optional_data of the BOOT#### variable in utf8.

This commit adds "include/efi_config.h", it contains the common
definition to be used from other menus such as UEFI Secure Boot
key management.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
2022-09-14 08:43:31 +02:00
Stefan Roese
1f865ee0ba cyclic: Add 'cyclic list' and 'cyclic demo' commands
This patch adds the cyclic command, which currently only supports the
'list' subcommand, to list all currently registered cyclic functions.
Here an example:

=> cyclic list
function: cyclic_demo, cpu-time: 7010 us, frequency: 99.80 times/s
function: cyclic_demo2, cpu-time: 1 us, frequency: 1.13 times/s

As you can see, the cpu-time is accounted, so that cyclic functions
that take too long might be discovered. Additionally the frequency is
logged.

The 'cyclic demo' commands registers the cyclic_demo() function to
be executed all 'cycletime_ms' milliseconds. The only thing this
function does is delaying by 'delay_us' microseconds.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2022-09-13 16:01:44 -04:00
Ovidiu Panait
ae90d16ac7 cmd: bdinfo: introduce bdinfo_print_size() helper
Add bdinfo_print_size() helper to display size variables (such as cache
sizes) in bdinfo format. The size is printed as "xxx Bytes", "xxx KiB",
"xxx MiB", "xxx GiB", etc as needed;

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Reviewed-by: Jason Liu <jason.hui.liu@nxp.com>
Link: https://lore.kernel.org/r/20220829170205.1274484-3-ovpanait@gmail.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-09-13 11:32:48 +02:00
Michal Simek
85007da94b cmd: bdinfo: Enable dumping lmb data when LMB is enabled
The commit 9996cea75f ("lmb/bdinfo: dump lmb info via bdinfo") added
support for dumping LMB information as the part of bdinfo. But code itself
should be called only when LMB is enabled.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/3e40c8bb77550dfca9f7eb48fe644a018d971411.1662537127.git.michal.simek@amd.com
2022-09-12 12:05:06 +02:00
Samuel Dionne-Riel
dc0d17c26a cmd: Add pause command
This command is being introduced with the goal of allowing user-friendly
"generic use case" U-Boot builds to pause until user input under some
situations.

The main use case would be when a boot failure happens, to pause until
the user has had time to acknowledge the current state.

Tested using:

    make && ./u-boot -v -T -c 'ut lib lib_test_hush_pause'

Signed-off-by: Samuel Dionne-Riel <samuel@dionne-riel.com>
Cc: Simon Glass <sjg@chromium.org>
2022-09-02 13:40:42 -04:00
Michal Simek
046d7a0bb1 cmd: efidebug: Add missing \n at the end of message
Currently message is not intended that prompt end up at the end of debug
line. For example like this:

DFU alt info setting: done
DFU entities configuration failed!
(partition table does not match dfu_alt_info?)
Firmware update failed: <NULL>
Cannot handle a capsule at 10000000Zynq>

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-08-13 11:09:49 +02:00
Simon Glass
5fe76d460d vbe: Add a new vbe command
Add a command to look at VBE methods and their status. Provide a test for
all of this as well.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-12 08:17:11 -04:00
Simon Glass
2b80bc1eee bootstd: Support bootflows with global bootmeths
Add support for handling this concept in bootflows. Update the 'bootflow'
command to allow only the normal bootmeths to be used. This alllows
skipping EFI bootmgr and VBE, for example.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-12 08:17:11 -04:00
Simon Glass
eccb25cd59 bootstd: Allow the bootdev to be optional in bootflows
With global bootmeths we want to scan without a bootdev. Update the logic
to allow this.

Change the bootflow command to show the bootdev only when valid.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-12 08:17:11 -04:00
Simon Glass
bc06aa035d bootstd: Allow bootmeths to be marked as global
The current way of handling things like EFI bootmgr is a bit odd, since
that bootmeth handles selection of the bootdev itself. VBE needs to work
the same way, so we should support it properly.

Add a flag that indicates that the bootmeth is global, rather than being
invoked on each bootdev. Provide a helper to read a bootflow from the
bootmeth.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-12 08:17:10 -04:00
Simon Glass
e141075f1c dm: core: Support sandbox with read interface
Update the 'read' command to work correctly with sandbox.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-12 08:14:24 -04:00
Simon Glass
cafe8712e8 video: Renname vbe.h to vesa.h
We want to use VBE to mean Verfiied Boot for Embedded in U-Boot. Rename
the existing VBE (Vesa BIOS extensions) to allow this.

Verified Boot for Embedded is documented doc/develop/vbe.rst

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-12 08:14:23 -04:00
Tom Rini
157861e6af dtoc fixes with pylint, tests
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Merge tag 'dm-pull-9aug22-take2' of https://source.denx.de/u-boot/custodians/u-boot-dm

dtoc fixes with pylint, tests
2022-08-11 08:47:20 -04:00
John Keeping
be43a35bff boot: allow bootmeth-distro without CONFIG_NET
Remove the dependency on CMD_PXE from BOOTMETH_DISTRO by introducing a
new hidden kconfig symbol to control whether pxe_utils is compiled,
allowing bootstd's distro method to be compiled without needing
networking support enabled.

Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Correct build errors when CMD_BOOTM is not enabled:
Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-10 13:42:56 -06:00
Simon Glass
4e4bf9449b common: Drop display_options.h from common header
Move this out of the common header and include it only where needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-10 13:46:55 -04:00
Tom Rini
46b5c8ed01 Merge tag 'tpm-030822' of https://source.denx.de/u-boot/custodians/u-boot-tpm
EFI_RNG_PROTOCOL with a TPM
2022-08-05 08:01:32 -04:00
Tom Rini
17ead040d4 Audit <flash.h> inclusion
A large number of files include <flash.h> as it used to be how various
SPI flash related functions were found, or for other reasons entirely.
In order to migrate some further CONFIG symbols to Kconfig we need to
not include flash.h in cases where we don't have a NOR flash of some
sort enabled.  Furthermore, in cases where we are in common code and it
doesn't make sense to try and further refactor the code itself in to new
files we need to guard this inclusion.

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-08-04 16:18:47 -04:00
Heinrich Schuchardt
63de2161e4 cmd: remove deprecated LCD support
No board uses lcd_clear() anymore. So we can remove support for it.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2022-08-04 15:32:20 -04:00
Heinrich Schuchardt
689525b12e cmd: undefined return value of do_extension_apply()
If 'extension apply all' is executed and no extension is found, the return
value of do_extension_apply() is undefined. Return CMD_RET_FAILURE in this
case.

Fixes: 2f84e9cf06 ("cmd: add support for a new "extension" command")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
2022-08-04 13:59:59 -04:00
Vyacheslav Bocharov
6ac4774426 cmd: fix do_adc_single()
The source code contains an error:
- argv[2] contains <channel> arg, variable for env_set is in argv[3]
- number of args is 4

Revert 54d24d7260
  cmd: simplify do_adc_single()

Fixes 9de612ae4d
  cmd: adc: Add support for storing ADC result in env variable
Reviewed-by: Simon Glass <sjg@chromium.org>
2022-08-04 13:59:59 -04:00
Sughosh Ganu
de70619dd3 test: rng: Add a UT testcase for the rng command
The 'rng' command dumps a number of random bytes on the console. Add a
set of tests for the 'rng' command. The test function performs basic
sanity testing of the command.

Since a unit test is being added for the command, enable it by default
in the sandbox platforms.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-08-02 23:50:02 +03:00
Sughosh Ganu
c79e274c7c cmd: rng: Use a statically allocated array for random bytes
Use a statically allocated buffer on stack instead of using malloc for
reading the random bytes. Using a local array is faster than
allocating heap memory on every initiation of the command.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-08-02 23:50:02 +03:00
Sughosh Ganu
87ab234c1c cmd: rng: Add support for selecting RNG device
The 'rng' u-boot command is used for printing a select number of
random bytes on the console. Currently, the RNG device from which the
random bytes are read is fixed. However, a platform can have multiple
RNG devices, one example being qemu, which has a virtio RNG device and
the RNG pseudo device through the TPM chip.

Extend the 'rng' command so that the user can provide the RNG device
number from which the random bytes are to be read. This will be the
device index under the RNG uclass.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-08-02 23:50:02 +03:00
Pali Rohár
09b0e20d73 cmd: mvebu/bubt: Fix cmd main return value on error
Negative return value from cmd main function cause U-Boot to print criplic
error message: exit not allowed from main input shell.

Set return value on error to 1.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-07-29 10:02:43 +02:00
Pali Rohár
93c1358bcd cmd: mvebu/bubt: Add support for sha512 checksum validation for Armada 3700
Armada 3700 BootROM supports also images with sha512 checksums and
mox-imager tool [1] generates such bootable images. Without sha512 support
U-Boot bubt command just prints error message:

  Error: Unsupported hash_algorithm_id = 64
  Error: Image header verification failed

This patch adds support for sha512 checksum validation for Armada 3700
images. With it bubt prints:

  Image checksum...OK!

[1] - https://gitlab.nic.cz/turris/mox-boot-builder.git

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-07-29 10:02:43 +02:00
Pali Rohár
4b9521f242 cmd: mvebu/bubt: Correctly propagate failure during tftp transport
net_loop() returns signed int type and negative value represents error.
tftp_read_file() returns unsigned size_t type and zero value represents
error. Casting signed negative value to unsigned size_t type cause losing
information about error and bubt thinks that no error happened, and
continue erasing SPI-NOR which cause malfunction device.

Fix this issue by correctly propagating failure during tftp transport.

With this change when there is no eth link, bubt does not erase SPI-NOR
anymore.

  => bubt
  Burning U-Boot image "flash-image.bin" from "tftp" to "spi"
  ethernet@30000 Waiting for PHY auto negotiation to complete......... TIMEOUT !
  ethernet@30000: No link.
  Error: Failed to read file flash-image.bin from tftp

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-07-29 10:02:43 +02:00
Pali Rohár
5d2f7d306c cmd: mvebu/bubt: Verify image type for all 32-bit Aramda SoCs and Armada 3700
Current image type verification code is specific to 32-bit Armada SoCs but
used only for Armada 38x. Implement image type verification for Armada 3700
and enable Armada 38x image verification for all 32-bit Armada SoCs.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-07-29 10:02:43 +02:00
Ying-Chun Liu (PaulLiu)
233662411d cmd: mmc: allow to write protect single boot partition
add arguments for mmc wp to assign which boot partition to protect.

Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
2022-07-27 15:19:09 +09:00
Oleksandr Suvorov
282eed50ec fpga: pass compatible flags to fpga_load()
These flags may be used to check whether an FPGA driver is able to
load a particular FPGA bitstream image.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Tested-by: Ricardo Salveti <ricardo@foundries.io>
Tested-by: Adrian Fiergolski <adrian.fiergolski@fastree3d.com>
Link: https://lore.kernel.org/r/20220722141614.297383-7-oleksandr.suvorov@foundries.io
Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-07-26 09:34:21 +02:00
Oleksandr Suvorov
fb2b88567d fpga: add option for loading FPGA secure bitstreams
It allows using this feature without enabling the "fpga loads"
command.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Co-developed-by: Adrian Fiergolski <adrian.fiergolski@fastree3d.com>
Signed-off-by: Adrian Fiergolski <adrian.fiergolski@fastree3d.com>
Tested-by: Ricardo Salveti <ricardo@foundries.io>
Tested-by: Adrian Fiergolski <adrian.fiergolski@fastree3d.com>
Link: https://lore.kernel.org/r/20220722141614.297383-2-oleksandr.suvorov@foundries.io
Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-07-26 08:42:16 +02:00
Ramin Zaghi
98889c9dba cmd: ti: ddr3: correct minor spelling mistake in Ti DDR3
Just a spelling mistake.

Signed-off-by: Ramin Zaghi <rzaghi@visualSilicon.com>
2022-07-25 13:01:48 -04:00
Marek Behún
61143f741e treewide: Fix Marek's name and change my e-mail address
Fix diacritics in some instances of my name and change my e-mail address
to kabel@kernel.org.

Add corresponding .mailmap entries.

Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-07-21 10:14:04 +02:00
Pali Rohár
56e3d6ef5d tlv_eeprom: Add missing CRC32 dependency
tlv_eeprom uses crc32() function, so add dependency into Kconfig.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-07-21 10:14:04 +02:00
Jan Kiszka
f3a56dda88 sf: Query write-protection status before operating the flash
Do not suggest successful operation if a flash area to be changed is
actually locked, thus will not execute the request. Rather report an
error and bail out. That's way more user-friendly than asking them to
manually check for this case.

Derived from original patch by Chao Zeng.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
2022-07-18 19:15:19 +05:30
Heinrich Schuchardt
868353daa3 efi_loader: memory leak in efi_set_bootdev()
efi_dp_str() allocates memory which should be released after use.

Use %pD printf code. Adjust message wording.

Fixes: d837cb1e3b ("efi: Add debugging to efi_set_bootdev()")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2022-07-13 20:07:07 +02:00
Tom Rini
36b661dc91 Merge branch 'next' 2022-07-11 14:58:57 -04:00
Tom Rini
9ff4ce8abc nman external-symbol improvements
Driver model memory-usage reporting
 patman test-reporting improvements
 Add bloblist design goals
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Merge tag 'dm-pull-28jun22' of https://source.denx.de/u-boot/custodians/u-boot-dm into next

nman external-symbol improvements
Driver model memory-usage reporting
patman test-reporting improvements
Add bloblist design goals
2022-07-08 14:39:07 -04:00
Tom Rini
c45568cc4e Convert CONFIG_SYS_BOOTM_LEN to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_BOOTM_LEN

As part of this, rework error handling in boot/bootm.c so that we pass
the buffer size to handle_decomp_error as CONFIG_SYS_BOOTM_LEN will not
be available to host tools but we do know the size that we passed to
malloc().

Cc: Soeren Moch <smoch@web.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
2022-07-07 14:01:09 -04:00
Tom Rini
dd4bf24445 Convert CONFIG_USE_ONENAND_BOARD_INIT to Kconfig
This converts the following to Kconfig:
   CONFIG_USE_ONENAND_BOARD_INIT

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-07-05 17:03:01 -04:00
Tom Rini
bf904ea418 Rename CONFIG_SYS_AUTOLAOD to CONFIG_SYS_DISABLE_AUTOLOAD
The "autoload" environment variable is always checked with env_get_yesno
as it can be set to any form of no.  The default behavior of
env_get_yesno is to return -1 on variables that are not set, which acts
as true in general (we test for non-zero return).  To convert
CONFIG_SYS_AUTOLOAD to Kconfig, given that it was almost always used to
set autoload to no, first rename to CONFIG_SYS_DISABLE_AUTOLOAD for
consistency sake.  Then, make it so that if enabled we set autoload=0 in
the default environment.  Migrate all platforms which set
CONFIG_SYS_AUTOLOAD to non-true or that set autoload to false in their
default environment to using CONFIG_SYS_DISABLE_AUTOLOAD

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-28 17:11:49 -04:00
Nicolas Iooss
8f8c04bf1e i2c: fix stack buffer overflow vulnerability in i2c md command
When running "i2c md 0 0 80000100", the function do_i2c_md parses the
length into an unsigned int variable named length. The value is then
moved to a signed variable:

    int nbytes = length;
    #define DISP_LINE_LEN 16
    int linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes;
    ret = dm_i2c_read(dev, addr, linebuf, linebytes);

On systems where integers are 32 bits wide, 0x80000100 is a negative
value to "nbytes > DISP_LINE_LEN" is false and linebytes gets assigned
0x80000100 instead of 16.

The consequence is that the function which reads from the i2c device
(dm_i2c_read or i2c_read) is called with a 16-byte stack buffer to fill
but with a size parameter which is too large. In some cases, this could
trigger a crash. But with some i2c drivers, such as drivers/i2c/nx_i2c.c
(used with "nexell,s5pxx18-i2c" bus), the size is actually truncated to
a 16-bit integer. This is because function i2c_transfer expects an
unsigned short length. In such a case, an attacker who can control the
response of an i2c device can overwrite the return address of a function
and execute arbitrary code through Return-Oriented Programming.

Fix this issue by using unsigned integers types in do_i2c_md. While at
it, make also alen unsigned, as signed sizes can cause vulnerabilities
when people forgot to check that they can be negative.

Signed-off-by: Nicolas Iooss <nicolas.iooss+uboot@ledger.fr>
Reviewed-by: Heiko Schocher <hs@denx.de>
2022-06-28 15:51:56 -04:00
Simon Glass
2cb4ddb91e dm: core: Add a command to show driver model statistics
This command shows the memory used by driver model along with various
hints as to what it might be if some 'core' tags were moved to use the
tag list instead of a core (i.e. always-there) pointer.

This may help with future work to reduce memory usage.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-06-28 03:09:52 +01:00
Simon Glass
dee2f5ae5c dm: core: Sort dm subcommands
Put these in alphabetic order, both in the help and in the implementation,
as there are quite a few subcommands now. Tweak the help for 'dm tree' to
better explain what it does.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-06-28 03:09:52 +01:00