Commit Graph

108 Commits

Author SHA1 Message Date
Heinrich Schuchardt
197005ae2a efi_loader: remove unused efi_get_time_init()
Remove unused function efi_get_time_init().

Initialization of the RTC has to be done in board bring up not in the EFI
subsystem.

There is no RTC device in the UEFI spec. The RTC is only accessed through
the runtime services.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-07-25 15:00:24 +02:00
Heinrich Schuchardt
4182a129ef efi_loader: allocate configuration table array
The system table contains a link to the list of configurations tables.
These include the device tree, SMBIOS table, and the ACPI table.

This array is currently statically linked. With the patch it is allocated
as EFI_RUNTIME_SERVICES_DATA. Due to the structure of the system table we
cannot work with a linked list here.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-07-25 15:00:24 +02:00
Heinrich Schuchardt
640adadf81 efi_loader: calculate crc32 for EFI tables
For the boot and runtime services tables and for the system table the
crc32 has to be set in the header.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-07-25 15:00:24 +02:00
Heinrich Schuchardt
1fcb7ea284 efi_loader: check map_key in ExitBootServices
The UEFI spec requires that the memory map key is checked in
ExitBootServices().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-07-25 14:59:44 +02:00
Alexander Graf
7e21fbca26 efi_loader: Rename sections to allow for implicit data
Some times gcc may generate data that is then used within code that may
be part of an efi runtime section. That data could be jump tables,
constants or strings.

In order to make sure we catch these, we need to ensure that gcc emits
them into a section that we can relocate together with all the other
efi runtime bits. This only works if the -ffunction-sections and
-fdata-sections flags are passed and the efi runtime functions are
in a section that starts with ".text".

Up to now we had all efi runtime bits in sections that did not
interfere with the normal section naming scheme, but this forces
us to do so. Hence we need to move the efi_loader text/data/rodata
sections before the global *(.text*) catch-all section.

With this patch in place, we should hopefully have an easier time
to extend the efi runtime functionality in the future.

Signed-off-by: Alexander Graf <agraf@suse.de>
[agraf: Fix x86_64 breakage]
2018-07-25 14:57:44 +02:00
Bin Meng
86df34d42b efi_loader: Install ACPI configuration tables
ACPI tables can be passed via EFI configuration table to an EFI
application. This is only supported on x86 so far.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-07-02 09:23:28 +08:00
Simon Glass
0864c565a2 efi: Update some comments related to smbios tables
Clarify the operation of this code with some additional comments.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-06-03 15:27:21 +02:00
Heinrich Schuchardt
45c66f9cdf efi_loader: adjust definitions of variable services
The definitons of the variable services are adjusted:
- use efi_uintn_t instead of unsigned long
- use u16 * instead of s16 * for Unicode strings
- correct definition of QueryVariableInfo
- rename efi_get_next_variable to efi_get_next_variable_name

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-06-03 15:27:20 +02:00
Alexander Graf
89aea43642 efi_loader: Use EFI_CACHELINE_SIZE in the image loader too
We were using our EFI_CACHELINE_SIZE define only in the runtime service
code, but left the image loader to use plain CONFIG_SYS_CACHELINE_SIZE.

This patch moves EFI_CACHELINE_SIZE into efi_loader.h and converts
the image loader to use it.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-05-29 14:43:12 +08:00
Tom Rini
f739fcd831 SPDX: Convert a few files that were missed before
As part of the main conversion a few files were missed.  These files had
additional whitespace after the '*' and before the SPDX tag and my
previous regex was too strict.  This time I did a grep for all SPDX tags
and then filtered out anything that matched the correct styles.

Fixes: 83d290c56f ("SPDX: Convert all of our single license tags to Linux Kernel style")
Reported-by: Heinrich Schuchardt <xypron.debian@gmx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-10 20:38:35 -04:00
Heinrich Schuchardt
3acef5da40 efi_loader: complete EFI_DEVICE_PATH_UTILITIES_PROTOCOL
The missing services of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL are
implemented.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-23 21:34:28 +02:00
Heinrich Schuchardt
f6dd3f359c efi_loader: correcty determine total device path length
Device paths may consist of multiple instances. Up to now we have only
considered the size of the first instance. For the services of the
EFI_DEVICE_PATH_UTILITIES_PROTOCOL in most cases the total length of the
device path is relevant.

So let's rename efi_dp_size() to efi_dp_instance_size() and create a new
function efi_dp_size() that calculates the total device path length.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-23 21:34:28 +02:00
Heinrich Schuchardt
211314c107 efi_loader: implement CreateDeviceNode
Implement the CreateDeviceNode service of the device path utility protocol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-23 21:34:28 +02:00
Heinrich Schuchardt
c9a63f44b5 efi_loader: new functions to print loaded image information
Introduce functions to print information about loaded images.

If we want to analyze an exception in an EFI image we need the offset
between the PC and the start of the loaded image.

With efi_print_image_info() we can print the necessary information for a
single image, e.g.

UEFI image [0xbffe6000:0xbffe631f] pc=0x138 '/\snp.efi'

efi_print_image_infos() provides output for all loaded images.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-05 15:23:55 +02:00
Heinrich Schuchardt
9e6835e6ba efi_loader: implement EFI_FILE_SYSTEM_INFO
Implement the information type EFI_FILE_SYSTEM_INFO in the service
GetInfo() of the EFI_FILE_PROTOCOL.

The volume label is not available in U-Boot. As a work-around use the
partition name instead.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-05 10:01:45 +02:00
Heinrich Schuchardt
c412166de2 efi_loader: ascii2unicode(): add trailing \0
When converting an ASCII string to UTF-16 don't forget to copy the
trailing \0.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-05 10:01:38 +02:00
Heinrich Schuchardt
b095f3c85f efi_loader: implement event groups
If an event of a group event is signaled all other events of the same
group are signaled too.

Function efi_signal_event is renamed to efi_queue_event.
A new function efi_signal_event is introduced that checks if an event
belongs to a group and than signals all events of the group.
Event group notifciation is implemented for ExitBootServices,
InstallConfigurationTable, and ResetSystem.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:07 +02:00
Heinrich Schuchardt
a3a28f5f0c efi_loader: define GUIDS for event groups
Event groups are used to signal multiple events at the same time.
They are identified by GUIDs. This patch provided the predefined
GUIDs of UEFI specification 2.7.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
43bce44262 efi_loader: manage events in a linked list
Lift the limit on the number of events by using a linked list.

This also allows to have events with type == 0.

This patch is based on Rob's patch
efi_loader: fix events
https://lists.denx.de/pipermail/u-boot/2017-October/309348.html

Suggested-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
bc4f9133ed efi_loader: support device tree for bootefi selftest
The second argument of the bootefi command should always be usable to
specify a device tree. This was missing for bootefi selftest and
bootefi hello.

Proper error handling is added.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
14ad49d100 efi_loader: efi_get_time_init should return status code
All EFI initialization functions should return a status code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
22c793e6a2 efi_loader: exit status for efi_reset_system_init
efi_reset_system_init provides the architecture or board specific
initialization of the EFI subsystem. Errors should be caught and
signalled by a return code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
d7b181d57d efi_loader: consistently return efi_status_t efi_watchdog_register
efi_watchdog_register() should always return a status code and not
a boolean value.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
075d425d65 efi_loader: return efi_status_t from efi_net_register
Consistently return status codes form efi_net_register().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
80ea9b0990 efi_loader: return efi_status_t from efi_gop_register
All initialization routines should return a status code instead of
a boolean.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: Convert warnings to debug() prints]
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
7657152bdd efi_loader: efi_smbios_register should have a return value
Errors may occur inside efi_smbios_register().

- Return a status code.
- Remove unused variables.
- Use constants where applicable.

Suggested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Leif Lindholm
e70f8dfa2c efi_loader: Initial EFI_DEVICE_PATH_UTILITIES_PROTOCOL
Not complete, but enough for Shell.efi and SCT.efi.  We'll implement the
rest as needed or once we have SCT running properly so there is a way to
validate the interface against the conformance test suite.

Initial skeleton written by Leif, and then implementation by Rob.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
[Fill initial skeleton]
Signed-off-by: Rob Clark <robdclark@gmail.com>
[Rebase on v2018.03-rc1]
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
df9cf561b0 efi_loader: correct efi_disk_register
efi_disk_register should return as status code (efi_status_t).

Disks with zero blocks should be reported as 'not ready' without throwing
an error.

This patch solves a problem running OpenBSD on system configured with
CONFIG_BLK=n (e.g. i.MX6).

Reported-by: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-02-10 00:25:49 +01:00
Heinrich Schuchardt
038782a27a efi_driver: return type of efi_driver_init()
Change the return type of efi_driver_init() to efi_status_t.

efi_driver_init() calls efi_add_driver() which returns an efi_status_t
value. efi_driver_init() should not subject this value to a conversion to
int losing high bits on 64bit systems.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-02-10 00:24:00 +01:00
Heinrich Schuchardt
05ef48a248 efi_driver: EFI block driver
This patch provides
* a uclass for EFI drivers
* a EFI driver for block devices

For each EFI driver the uclass
* creates a handle
* adds the driver binding protocol

The uclass provides the bind, start, and stop entry points for the driver
binding protocol.

In bind() and stop() it checks if the controller implements the protocol
supported by the EFI driver. In the start() function it calls the bind()
function of the EFI driver. In the stop() function it destroys the child
controllers.

The EFI block driver binds to controllers implementing the block io
protocol.

When the bind function of the EFI block driver is called it creates a
new U-Boot block device. It installs child handles for all partitions and
installs the simple file protocol on these.

The read and write functions of the EFI block driver delegate calls to the
controller that it is bound to.

A usage example is as following:

U-Boot loads the iPXE snp.efi executable. iPXE connects an iSCSI drive and
exposes a handle with the block IO protocol. It calls ConnectController.

Now the EFI block driver installs the partitions with the simple file
protocol.

iPXE uses the simple file protocol to load Grub or the Linux Kernel.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: add comment on calloc len]
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:14 +01:00
Heinrich Schuchardt
9bc9664d5e efi_loader: add check_tpl parameter to efi_signal_event
In ExitBootServices we need to signal events irrespective of the current
TPL level. A new parameter check_tpl is added to efi_signal_event().

Function efi_console_timer_notify() gets some comments.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:14 +01:00
Heinrich Schuchardt
65436f91c5 efi_loader: provide function to get last node of a device path
On a block device and its partitions the same protocols can be
installed. To tell the apart we can use the type of the last
node of the device path which is not the end node.

The patch provides a utility function to find this last node.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:14 +01:00
Heinrich Schuchardt
64e4db0f11 efi_loader: make efi_disk_create_partitions a global symbol
Up to now we have been using efi_disk_create_partitions() to create
partitions for block devices that existed before starting an EFI
application.

We need to call it for block devices created by EFI
applications at run time. The EFI application will define the
handle for the block device and install a device path protocol
on it. We have to use this device path as stem for the partition
device paths.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:14 +01:00
Heinrich Schuchardt
98d48bdf41 efi_loader: provide a function to create a partition node
Provide new function efi_dp_part_node() to create a device
node for a partition.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:14 +01:00
Heinrich Schuchardt
b3dd14b6b1 efi_loader: make efi_block_io_guid a global symbol
The GUID of the EFI_BLOCK_IO_PROTOCOL is needed in different code
parts. To avoid duplication make efi_block_io_guid a global symbol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:14 +01:00
Heinrich Schuchardt
04298686a4 efi_loader: return NULL from device path functions
For the construction of device paths we need to call the
AllocatePool service. We should not ignore if it fails due to an
out of memory situation.

This patch changes the device path functions to return NULL if
the memory allocation fails.

Additional patches will be needed to fix the callers.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:13 +01:00
Heinrich Schuchardt
2074f70064 efi_loader: consistently use efi_handle_t for handles
We should consistently use the efi_handle_t typedef when
referring to handles.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:13 +01:00
Heinrich Schuchardt
f0959dbee2 efi_loader: implement ConnectController
Implement the ConnectController boot service.

A unit test is supplied in a subsequent patch.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:13 +01:00
Heinrich Schuchardt
d550414434 efi_loader: debug output installed device path
When a device path protocol is installed write the device
path to the console in debug mode.

For printing the new macro EFI_PRINT is used, which can be reused
for future diagnostic output.

Remove unused EFI_PRINT_GUID macro

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:13 +01:00
Heinrich Schuchardt
fe1599daf5 efi_loader: list of open protocol infos
Add a list of open protocol infos to each protocol of a handle.

Provide helper functions to access the list items.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22 23:09:13 +01:00
Heinrich Schuchardt
678e03a00c efi_loader: new function efi_delete_handle()
Provide a function to remove a handle from the object list
after removing all protocols.

To avoid forward declarations other functions have to move up
in the coding.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16 23:07:36 +01:00
Heinrich Schuchardt
56d9288858 efi_loader: return status from efi_setup_loaded_image()
efi_setup_loaded_image() should return an error code indicating if
an error has occurred.

An error occurs if a protocol cannot be installed.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16 23:07:25 +01:00
Heinrich Schuchardt
44549d62c3 efi_loader: helper function to add EFI object to list
To avoid duplicate coding provide a helper function that
initializes an EFI object and adds it to the EFI object
list.

efi_exit() is the only place where we dereference a handle
to obtain a protocol interface. Add a comment to the function.

Suggested-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:41:01 +01:00
Heinrich Schuchardt
69fb6b1afc efi_loader: manage protocols in a linked list
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:37:49 +01:00
Heinrich Schuchardt
ebb4dd5bc3 efi_loader: efi_console: use helper functions
Use helper functions efi_created_handle and efi_add_protocol
for creating the console handles and instaling the respective
protocols.

This change is needed if we want to move from an array of
protocols to a linked list of protocols.

Eliminate EFI_PROTOCOL_OBJECT which is not used anymore.

Currently we have not defined protocol interfaces to be const.
So efi_con_out and efi_console_control cannot be defined as const.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:56 +01:00
Heinrich Schuchardt
3f79a2b532 efi_loader: helper functions for protocol management
This patch provides helper functions to manage protocols.
efi_search_protocol - find a protocol on a handle
efi_add_protocol - install a protocol on a handle
efi_remove_protocol - remove a protocol from a handle
efi_remove_all_protocols - remove all protocols from a handle

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:56 +01:00
Heinrich Schuchardt
085d07cd3b efi_loader: argument of efi_search_obj should be const
The argument of efi_search_obj is not changed so it should
be marked as const.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:56 +01:00
Heinrich Schuchardt
2edab5e2e6 efi_loader: make efi_create_handle non-static
Export function efi_create_handle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:56 +01:00
Heinrich Schuchardt
ff401d3f81 efi_loader: efi_dp_match should have const arguments
efi_dp_match does not change its arguments.
So they should be marked as const.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:56 +01:00
Heinrich Schuchardt
1b68153af1 efi_loader: rework efi_search_obj
EFI_HANDLEs are used both in boottime and in runtime services.
efi_search_obj is a function that can be used to validate
handles. So let's make it accessible via efi_loader.h.

We can simplify the coding using list_for_each_entry.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:56 +01:00