u-boot.git/lib/efi, branch v2019.01

efi_loader: typedef struct efi_object *efi_handle_t

2018-12-02T20:59:36+00:00

All our handles point to a struct efi_object. So let's define the
efi_handle_t accordingly. This helps us to discover coding errors much
more easily. This becomes evident by the corrections to the usage of
handles in this patch.

Rename variable image_handle to image_obj where applicable.

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

sysreset: Remove DM_FLAG_PRE_RELOC flag in various drivers

2018-11-14T17:16:28+00:00

When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be
bound before relocation. However due to a bug in the DM core,
the flag only takes effect when devices are statically declared
via U_BOOT_DEVICE(). This bug has been fixed recently by commit
"dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in
lists_bind_fdt()", but with the fix, it has a side effect that
all existing drivers that declared DM_FLAG_PRE_RELOC flag will
be bound before relocation now. This may expose potential boot
failure on some boards due to insufficient memory during the
pre-relocation stage.

To mitigate this potential impact, the following changes are
implemented:

- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver
  only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device
  is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for
  drivers that support both statically declared devices and
  configuration from device tree

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

efi: stub: Pass EFI system table address to U-Boot payload

2018-08-30T03:23:07+00:00

This updates the EFI stub codes to pass UEFI BIOS's system table
address to U-Boot payload so that U-Boot can utilize it.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

efi: app: Add a sysreset driver

2018-07-20T01:33:22+00:00

This adds the DM sysreset driver for EFI application support.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

efi: stub: Move the use_uart assignment immediately after exit_boot_services() call

2018-06-24T00:56:04+00:00

The use_uart assignment should follow immediately after the call to
exit_boot_services(), in case we want some debug output after that.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

efi.h: Do not use config options

2018-06-24T00:56:04+00:00

Currently efi.h determines a few bits of its environment according to
config options. This falls apart with the efi stub support which may
result in efi.h getting pulled into the stub as well as real U-Boot
code. In that case, one may be 32bit while the other one is 64bit.

This patch changes the conditionals to use compiler provided defines
instead. That way we always adhere to the build environment we're in
and the definitions adjust automatically.

Signed-off-by: Alexander Graf 
Reviewed-by: Bin Meng 
Tested-by: Bin Meng 
[bmeng: added some comments to describe the __x86_64__ check]
Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

efi: stub: Pass EFI GOP information to U-Boot payload

2018-06-17T13:16:04+00:00

If UEFI BIOS has the graphics output protocol (GOP), let's pass its
information to U-Boot payload so that U-Boot can utilize it (eg:
an EFI framebuffer driver).

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

x86: use EFI calling convention for efi_main on x86_64

2018-06-17T13:16:04+00:00

UEFI specifies the calling convention used in Microsoft compilers;
first arguments of a function are passed in (%rcx, %rdx, %r8, %r9).

All other compilers use System V ABI by default, passing first integer
arguments of a function in (%rdi, %rsi, %rdx, %rcx, %r8, %r9).

These ABI also specify different sets of registers that must be preserved
across function calls (callee-saved).

GCC allows using the Microsoft calling convention by adding the ms_abi
attribute to a function declaration.

Current EFI implementation in U-Boot specifies EFIAPI for efi_main()
in the test apps but uses default calling convention in lib/efi.

Save efi_main() arguments in the startup code on x86_64;
use EFI calling convention for _relocate() on x86_64;
consistently use EFI calling convention for efi_main() everywhere.

Signed-off-by: Ivan Gorinov 
Reviewed-by: Alexander Graf 
Reviewed-by: Bin Meng 
Tested-by: Bin Meng

x86: efi: payload: Minor clean up on error message output

2018-06-13T01:50:57+00:00

If GetMemoryMap() fails, we really want to know EFI_BITS_PER_LONG
instead of BITS_PER_LONG. A space and LF are added in places where
error message is output to improve readability.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

x86: efi: payload: Enforce toolchain to generate 64-bit EFI payload stub codes

2018-06-13T01:50:57+00:00

Attempting to use a toolchain that is preconfigured to generate code
for the 32-bit architecture (i386), for example, the i386-linux-gcc
toolchain on kernel.org, to compile the 64-bit EFI payload does not
build. This updates the makefile fragments to ensure '-m64' is passed
to toolchain when building the 64-bit EFI payload stub codes.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass