Commit graph

42 commits

Author SHA1 Message Date
Heinrich Schuchardt
bc78d22d0f cmd/efidebug: missing initialization of load_options
Variable load_options must be initialized to NULL to avoid a segmentation
fault when freeing the memory this variable points to.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-08-13 22:37:36 +02:00
Heinrich Schuchardt
0ad64007fe efi_loader: set load options in boot manager
Up to now we used the value of the bootargs environment variable as load
options in the boot manager. This is not correct. The data has to be taken
from the Boot#### variable.

Let the boot manager copy the optional data of the EFI_LOAD_OPTION as load
options to the loaded image protocol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-08-08 19:03:24 +02:00
Heinrich Schuchardt
0e69bcfb27 efi_loader: validate load option
For passing the optional data of the load option to the loaded imaged
protocol we need its size.

efi_deserialize_load_option() is changed to return the size of the optional
data.

As a by-product we get a partial validation of the load option.
Checking the length of the device path remains to be implemented.

Some Coverity defects identified the load options as user input because
get_unaligned_le32() and get_unaligned_le16() is called. But non of these
Coverity defects can be resolved without marking functions with Coverity
specific tags.

Reported-by: Coverity (CID 303760)
Reported-by: Coverity (CID 303768)
Reported-by: Coverity (CID 303776)
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-06-03 17:19:17 +02:00
Heinrich Schuchardt
255a47333c efi_loader: add EFI_MEMORY_SP to memory attributes
The UEFI 2.8 specification has introduced the EFI_MEMORY_SP memory
attribute. Add it to the 'efidebug memmap' and 'efi mem' commands.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-05-21 10:00:17 +02:00
Simon Glass
f7ae49fc4f common: Drop log.h from common header
Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:18 -04:00
Simon Glass
0914011310 command: Remove the cmd_tbl_t typedef
We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.

Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.

This requires quite a few header-file additions.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 18:36:55 -04:00
Ilias Apalodimas
b0e4f2c738 cmd: efidebug: Add support for querying UEFI variable storage
With the previous patches that use OP-TEE and StandAloneMM for UEFI
variable storage we've added functionality for efi_query_variable_info.
So let's add the relevant command to efidebug and retrieve information
about the container used to store UEFI variables

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2020-05-17 21:59:53 +02:00
Heinrich Schuchardt
bdb15776f6 cmd: efidebug: fix -Werror=type-limits warning
Compiling with -Wtype-limits yields:

cmd/efidebug.c:968:32: error: comparison is always false due to limited
range of data type [-Werror=type-limits]
  968 |  if (*endp != '\0' || bootnext > 0xffff) {
      |

Remove the superfluous check.

Fixes: 59df7e7e77 ("cmd: add efidebug command")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-05-10 00:01:12 +02:00
AKASHI Takahiro
e2a5b86030 cmd: efidebug: add a comment against Coverity check (300329)
The check here, "Null pointer dereferences," is a false positive.
So leave a comment.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reported-by: Coverity (CID 300329)
2020-05-09 09:30:28 +02:00
AKASHI Takahiro
d67591dc22 cmd: efidebug: fix a wrong handling of arguments
Coverity detected a dead code, but actually there is a bug in a check
against a number of arguments. So simply fix it.

Reported-by: Coverity (CID 300330)
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-05-09 09:30:27 +02:00
Heinrich Schuchardt
a30c72319c cmd: efidebug: simplify UEFI protocol calls
We should not to refer to a function via the run-time or boot services
tables if the function is exported.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-05-04 12:26:11 +02:00
Heinrich Schuchardt
f9f5f92bc5 efi_loader: fix 'efidebug bootorder'
* don't copy GUIDs for no reason
* shorten print format strings by using variable names
* don't use the run-time table to access exported functions
* check the result of malloc() (fixes Coverity CID 300331)

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-04-30 10:25:07 +02:00
Heinrich Schuchardt
dd9056c06a efi_loader: efidebug, avoid illegal memory access
For EFI_PERSISTENT_MEMORY_TYPE the 'efidebug memmap' command produces an
illegal memory access.

* Add the missing descriptive string for EFI_PERSISTENT_MEMORY_TYPE.
* Replace the check for EFI_MAX_MEMORY_TYPE by the ARRAY_SIZE() macro.

Reported-by: Coverity (CID 300336)
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-04-30 10:25:07 +02:00
Heinrich Schuchardt
b5f4e9e384 efi_loader: fix 'efidebug boot dump'
* Do not recreate a variable name that we already have as u16 string.
* Check the return value of malloc()
* EFI_NOT_FOUND cannot occur for a variable name returned by
  GetNextVariableName(). Remove a print statement.
* Don't copy a GUID for no reason.
* Don't use the run-time service table to call exported functions.
* Don't pass NULL to show_efi_boot_opt_data() (fixes Coverity CID 300338).

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-04-30 10:25:07 +02:00
AKASHI Takahiro
525fc06744 cmd: efidebug: add "test bootmgr" sub-command
This sub-command will be used to test image authentication,
in particular, a case where efi_load_image() failed with
EFI_SECURITY_VIOLATION but we still want to try efi_start_image().
We won't run such a case under normal bootmgr because it simply
refuses to call efi_start_image() if anything but EFI_SUCCESS
is returned when loading an image.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
2020-04-16 08:12:47 +02:00
Heinrich Schuchardt
6c0ef35cdc cmd: efidebug: fix int to pointer cast
On 32 bit systems fix
warning: cast to pointer from integer of different size
[-Wint-to-pointer-cast]

Fixes: a415d61eac ("cmd: map addresses to sysmem in efidebug memmap")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-28 10:45:03 +01:00
Heinrich Schuchardt
a415d61eac cmd: map addresses to sysmem in efidebug memmap
Addresses in the sandbox's device tree are in the sandbox's virtual address
space. If we want to compare memory reservations in the device-tree with
the output of 'efidebug memmap', we need to convert back to this address
space.

Adjust the output of the 'efidebug memmap' command.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-17 08:29:52 +01:00
Heinrich Schuchardt
30efb5dd43 cmd: efidebug: correct error message
Add the missing line feed at the error message if the variable referred to
by 'efidebug boot rm' does not exist.

Shorten the format string by using the variable name instead of the number
of the boot variable.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-11 08:23:05 +01:00
AKASHI Takahiro
e8bced62b6 cmd: efidebug: fix a failure of "boot rm" sub-command
There is a wrong usage of utf8_utf16_strncpy() in "boot rm" command, and
then it will end up with a failure of this command due to a wrong
value of an interim variable ("var_name16").

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-11 08:23:05 +01:00
Ilias Apalodimas
ec80b4735a efi_loader: Implement FileLoad2 for initramfs loading
Following kernel's proposal for an arch-agnostic initrd loading
mechanism [1] let's implement the U-boot counterpart.
This new approach has a number of advantages compared to what we did up
to now. The file is loaded into memory only when requested limiting the
area of TOCTOU attacks. Users will be allowed to place the initramfs
file on any u-boot accessible partition instead of just the ESP one.
Finally this is an attempt of a generic interface across architectures
in the linux kernel so it makes sense to support that.

The file location is intentionally only supported as a config option
argument(CONFIG_EFI_INITRD_FILESPEC), in an effort to enhance security.
Although U-boot is not responsible for verifying the integrity of the
initramfs, we can enhance the offered security by only accepting a
built-in option, which will be naturally verified by UEFI Secure Boot.
This can easily change in the future if needed and configure that via ENV
or UEFI variable.

[1] https://lore.kernel.org/linux-efi/20200207202637.GA3464906@rani.riverdale.lan/T/#m4a25eb33112fab7a22faa0fd65d4d663209af32f

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-02-28 19:37:14 +01:00
Heinrich Schuchardt
76be687288 efi_loader: implement EFI_RT_PROPERTIES_TABLE
UEFI spec 2.8 errata A replaces the RuntimeServicesSupported variable
defined in UEFI spec 2.8 by the configuration table
EFI_RT_PROPERTIES_TABLE. So let's follow suit.

Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-26 19:32:09 +01:00
Heinrich Schuchardt
07e2fe7971 cmd: efidebug: capitalize UEFI
%s/uefi/UEFI/g

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-01-07 18:08:21 +01:00
Heinrich Schuchardt
986e064884 cmd: efidebug: new sub-command tables
Provide sub-command for efidebug to list configuration tables.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-01-07 18:08:21 +01:00
Heinrich Schuchardt
173cd9e73a cmd: efidebug: simplify get_guid_text()
When we hit a matching GUID we can directly return the text. There is no
need for a check after the loop.

efi_guid_t is defined as 8 byte aligned but GUIDs in packed structures do
not follow this alignment. Do not require the argument of get_guid_text()
to be correctly aligned.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-01-07 18:08:20 +01:00
AKASHI Takahiro
0bffb8c46b cmd: efidebug: fix a build error in show_efi_boot_opt()
I detected the following error in sandbox with Clang on Travis CI:
    +cmd/efidebug.c:703:15: error: result of comparison of constant
     9223372036854775822 with expression of type 'int' is always false
     [-Werror,-Wtautological-constant-out-of-range-compare]
    +        else if (ret == EFI_NOT_FOUND)
    +                 ~~~ ^  ~~~~~~~~~~~~~

Simply changing a type of 'ret' to efi_status_t will fix this error.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-12-03 20:54:05 +01:00
Simon Glass
e7dcf5645f env: Drop environment.h header file where not needed
This header file is now only used by files that access internal
environment features. Drop it from various places where it is not needed.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Heinrich Schuchardt
a6ccba0c35 efi_loader: efidebug.c function documentation
make htmldocs produces a warning:
./cmd/efidebug.c:733: WARNING: Unexpected indentation.
Correct the indentation.

Remove 'See above for details of sub-commands.' which is not helpful in the
Sphinx generated documentation.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-07-30 21:36:22 +02:00
Heinrich Schuchardt
0b01656924 efi_loader: function comments cmd/efi_debug.c
Adjust comments for Sphinx.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-07-16 22:17:20 +00:00
Heinrich Schuchardt
a332f25198 efi_loader: consistent error handling in efidebug.c
If a variable cannot be set, always show an information message.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-06-20 22:26:21 +00:00
Heinrich Schuchardt
428a470a27 efi_loader: consistent types in efidebug.c
efi_status_t and int are of different size. Use separate variables for
return codes of different type.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-06-20 22:26:20 +00:00
AKASHI Takahiro
f658c2e190 cmd: efidebug: make some boot variables non-volatile
Boot####, BootOrder and BootNext should be non-volatile.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-06-04 23:56:14 +02:00
Heinrich Schuchardt
39a1ff8cea efi_loader: optional data in load options are binary
The field boot OptionalData in structure _EFI_LOAD_OPTIONS is for binary
data.

When we use `efidebug boot add` we should convert the 5th argument from
UTF-8 to UTF-16 before putting it into the BootXXXX variable.

When printing boot variables with `efidebug boot dump` we should support
the OptionalData being arbitrary binary data. So let's dump the data as
hexadecimal values.

Here is an example session protocol:

=> efidebug boot add 00a1 label1 scsi 0:1 doit1 'my option'
=> efidebug boot add 00a2 label2 scsi 0:1 doit2
=> efidebug boot dump
Boot00A0:
  attributes: A-- (0x00000001)
  label: label1
  file_path: .../HD(1,MBR,0xeac4e18b,0x800,0x3fffe)/doit1
  data:
    00000000: 6d 00 79 00 20 00 6f 00 70 00 74 00 69 00 6f 00  m.y. .o.p.t.i.o.
    00000010: 6e 00 00 00                                      n...
Boot00A1:
  attributes: A-- (0x00000001)
  label: label2
  file_path: .../HD(1,MBR,0xeac4e18b,0x800,0x3fffe)/doit2
  data:

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:50 +02:00
AKASHI Takahiro
ffe2157447 cmd: efidebug: rework "boot dump" sub-command using GetNextVariableName()
Currently in do_efi_boot_dump(), we directly read EFI variables from
related environment variables. To accommodate alternative storage
backends, we should switch to using the UEFI API instead.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:50 +02:00
Heinrich Schuchardt
391bc8a938 efi_loader: more short texts for protocols in efidebug
The `efidebug dh` command shows handles and the installed protocols. For
most of the protocols implemented by U-Boot a short text was shown. But for
some only the GUID was displayed.

Provide the missing short texts for the following protocols: HII String,
HII Database, HII Config Routing, Simple Network, PXE Base Code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-04-23 00:37:27 +02:00
Heinrich Schuchardt
dec88e41e0 efi_loader: consistent naming of protocol GUIDs
We should consistently use the same name for protocol GUIDs as defined in
the UEFI specification. Not adhering to this rule has led to duplicate
definitions for the EFI_LOADED_IMAGE_PROTOCOL_GUID.

Adjust misnamed protocol GUIDs.

Adjust the text for the graphics output protocol in the output of the
`efidebug dh` command.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-04-23 00:37:27 +02:00
Heinrich Schuchardt
1fa442ed43 efi_loader: error handling for efidebug boot add
In  `efidebug boot add iPXE scsi 0:1 snp-arm64.efi --foo` a parameter is
missing. Hence the command should not silently return as if everything were
ok but should display the usage info.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Alexander Graf <agraf@csgraf.de>
2019-03-02 23:34:26 +01:00
AKASHI Takahiro
00358bb804 cmd: efidebug: add memmap command
"memmap" command prints uefi-specific memory map information.
=> efi memmap
Type             Start            End              Attributes
================ ================ ================ ==========
CONVENTIONAL     0000000040000000-000000007de27000 WB
RUNTIME DATA     000000007de27000-000000007de28000 WB|RT
RESERVED         000000007de28000-000000007de2a000 WB
RUNTIME DATA     000000007de2a000-000000007de2b000 WB|RT
RESERVED         000000007de2b000-000000007de2c000 WB
RUNTIME DATA     000000007de2c000-000000007de2d000 WB|RT
LOADER DATA      000000007de2d000-000000007ff37000 WB
RUNTIME CODE     000000007ff37000-000000007ff38000 WB|RT
LOADER DATA      000000007ff38000-0000000080000000 WB

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-02-25 12:47:13 +01:00
AKASHI Takahiro
fa5367342a cmd: efidebug: add images command
"images" command prints loaded images-related information.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-02-25 12:47:13 +01:00
AKASHI Takahiro
a80146205d cmd: efidebug: add dh command
"dh" command prints all the uefi handles used in the system.

=> efi dh
        7ef3bfa0: Device Path, Device Path To Text, Device Path Utilities,
		  Unicode Collation 2
        7ef31d30: Driver Binding
        7ef31da0: Simple Text Output
        7ef31e10: Simple Text Input, Simple Text Input Ex
        7ef3cca0: Block IO, Device Path
        7ef3d070: Block IO, Device Path
        7ef3d1b0: Block IO, Device Path, Simple File System
        7ef3d3e0: Block IO, Device Path, Simple File System

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-02-25 12:47:13 +01:00
AKASHI Takahiro
66eaf56648 cmd: efidebug: add drivers command
"drivers" command prints all the uefi drivers on the system.

=> efi drivers
Driver           Name                 Image Path
================ ==================== ====================
000000007ef003d0 <NULL>               <built-in>

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-02-25 12:47:13 +01:00
AKASHI Takahiro
355cdb5a72 cmd: efidebug: add devices command
"devices" command prints all the uefi variables on the system.

=> efi devices
Scanning disk ahci_scsi.id0lun0...
Scanning disk ahci_scsi.id1lun0...
Found 4 disks
Device           Device Path
================ ====================
000000007ef07ea0 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)
000000007ef00c10 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/Scsi(0,0)
000000007ef00dd0 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/Scsi(1,0)
000000007ef07be0 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/Scsi(1,0)/HD(1,MBR,0x086246ba,0x800,0x40000)
000000007ef07510 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/Scsi(1,0)/HD(2,MBR,0x086246ba,0x40800,0x3f800)

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-02-25 12:47:13 +01:00
AKASHI Takahiro
59df7e7e77 cmd: add efidebug command
Currently, there is no easy way to add or modify UEFI variables.
In particular, bootmgr supports BootOrder/BootXXXX variables, it is
quite hard to define them as u-boot variables because they are represented
in a complicated and encoded format.

The new command, efidebug, helps address these issues and give us
more friendly interfaces:
 * efidebug boot add: add BootXXXX variable
 * efidebug boot rm: remove BootXXXX variable
 * efidebug boot dump: display all BootXXXX variables
 * efidebug boot next: set BootNext variable
 * efidebug boot order: set/display a boot order (BootOrder)

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-02-25 12:47:13 +01:00