[PATCH v4 0/3] efi_vars: Implement SPI Flash storage for EFI

[Michal Simek <michal.simek@amd.com>]

This is updated series based on v3 version sent here
https://lore.kernel.org/all/20231126220836.374956-1-i@shantur.com/

that's why I am continuing on v4 instead of starting from scratch.

Tested on kv260 with saving variables to location where User MTD partition
is.
CONFIG_EFI_VARIABLE_SF_STORE=y
CONFIG_EFI_RT_VOLATILE_STORE=y
CONFIG_EFI_VARIABLE_SF_OFFSET=0x22a0000

Thanks,
Michal

Changes in v4:
- New patch based on review comments from v3
- use unify methods for reading/writing variable

Changes in v3:
- Fixed compiler warnings.

Changes in v2:
- Refactored efi_var_file to move common parts out as requested
- Changed ifdefs to use CONFIG_IS_DEFINED
- Fixed typos

Michal Simek (1):
  efi_var: Unify read/write access helper function

Shantur Rathore (2):
  efi_var_file: refactor to move buffer functions
  efi_vars: Implement SPI Flash store

 include/efi_variable.h          | 18 +++----
 lib/efi_loader/Kconfig          | 26 +++++++++-
 lib/efi_loader/Makefile         |  3 +-
 lib/efi_loader/efi_var_common.c | 44 ++++++++++++++++
 lib/efi_loader/efi_var_file.c   | 65 ++---------------------
 lib/efi_loader/efi_var_sf.c     | 91 +++++++++++++++++++++++++++++++++
 lib/efi_loader/efi_variable.c   | 16 ++++--
 7 files changed, 187 insertions(+), 76 deletions(-)
 create mode 100644 lib/efi_loader/efi_var_sf.c

-- 
2.43.0

base-commit: 4aa15db6ff8b2bbdcdb082e547967bf4a96fee52
branch: master-next-test