[GIT PULL] EFI changes for v5.8

From: Ard Biesheuvel
Date: Mon May 25 2020 - 04:07:28 EST

Ingo, Thomsd, Boris,

Please pull the changes below. Note that I did not incorporate the GOT
handling changes for the x86 decompressor - Arvind has some changes on
top that might just as well go in at the same time, and they are not
really EFI changes anyway.

The following changes since commit 4da0b2b7e67524cc206067865666899bc02e1cb0:

efi/libstub: Re-enable command line initrd loading for x86 (2020-04-25 12:26:32 +0200)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git tags/efi-changes-for-v5.8

for you to fetch changes up to 9241dfe7f2772fc73c82eb950afb1c795d2c012c:

efi/x86: Drop the special GDT for the EFI thunk (2020-05-24 00:25:15 +0200)

Cc: Ingo Molnar <mingo@xxxxxxxxxx>,
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Arvind Sankar <nivedita@xxxxxxxxxxxx>

More EFI changes for v5.8:
- Rename pr_efi/pr_efi_err to efi_info/efi_err, and use them consistently
- Simplify and unify initrd loading
- Parse the builtin command line on x86 (if provided)
- Implement printk() support, including support for wide character strings
- Some fixes for issues introduced by the first batch of v5.8 changes
- Fix a missing prototypes warning
- Simplify GDT handling in early mixed mode thunking code
- Some other minor fixes and cleanups

Ard Biesheuvel (5):
efi/libstub/x86: Work around LLVM ELF quirk build regression
efi/libstub: Make efi_printk() input argument const char*
efi/libstub: Use pool allocation for the command line
efi/efivars: Add missing kobject_put() in sysfs entry creation error path
efi/libstub: Add missing prototype for PE/COFF entry point

Arvind Sankar (38):
efi/x86: Use correct size for boot_params
efi/libstub: Add a helper function to split 64-bit values
efi/libstub: Move pr_efi/pr_efi_err into efi namespace
efi/x86: Use efi_err for error messages
efi/gop: Use efi_err for error messages
efi/tpm: Use efi_err for error messages
efi/libstub: Upgrade ignored dtb= argument message to error
efi/x86: Move command-line initrd loading to efi_main
efi/libstub: Unify initrd loading across architectures
efi/x86: Support builtin command line
efi/libstub: Check return value of efi_parse_options
efi/libstub: Fix mixed mode boot issue after macro refactor
efi/libstub: Include dependencies of efistub.h
efi/libstub: Rename efi_[char16_]printk to efi_[char16_]puts
efi/libstub: Buffer output of efi_puts
efi/libstub: Add a basic printf implementation
efi/libstub: Optimize for size instead of speed
efi/printf: Drop %n format and L qualifier
efi/printf: Add 64-bit and 8-bit integer support
efi/printf: Factor out flags parsing and handle '%' earlier
efi/printf: Fix minor bug in precision handling
efi/printf: Merge 'p' with the integer formats
efi/printf: Factor out width/precision parsing
efi/printf: Factor out integer argument retrieval
efi/printf: Handle null string input
efi/printf: Refactor code to consolidate padding and output
efi/printf: Abort on invalid format
efi/printf: Turn vsprintf into vsnprintf
efi/libstub: Implement printk-style logging
efi/libstub: Add definitions for console input and events
efi/gop: Add an option to list out the available GOP modes
efi/printf: Add support for wchar_t (UTF-16)
efi/libstub: Add UTF-8 decoding to efi_puts
efi/libstub: Use %ls for filename
efi/libstub: Get the exact UTF-8 length
efi/libstub: Use snprintf with %ls to convert the command line
efi/libstub: Don't parse overlong command lines
efi/x86: Drop the special GDT for the EFI thunk

Joe Perches (1):
efi/libstub: Correct comment typos

Documentation/fb/efifb.rst | 5 +
arch/arm/boot/compressed/efi-header.S | 2 +-
arch/arm64/kernel/efi-entry.S | 2 +-
arch/arm64/kernel/efi-header.S | 2 +-
arch/x86/boot/compressed/efi_thunk_64.S | 19 +-
arch/x86/include/asm/efi.h | 29 +-
arch/x86/xen/efi.c | 2 +-
drivers/firmware/efi/efivars.c | 4 +-
drivers/firmware/efi/libstub/Makefile | 7 +-
drivers/firmware/efi/libstub/arm32-stub.c | 12 +-
drivers/firmware/efi/libstub/arm64-stub.c | 14 +-
drivers/firmware/efi/libstub/efi-stub-helper.c | 346 +++++++++++----
drivers/firmware/efi/libstub/efi-stub.c | 70 +--
drivers/firmware/efi/libstub/efistub.h | 155 +++++--
drivers/firmware/efi/libstub/fdt.c | 16 +-
drivers/firmware/efi/libstub/file.c | 14 +-
drivers/firmware/efi/libstub/gop.c | 113 ++++-
drivers/firmware/efi/libstub/pci.c | 10 +-
drivers/firmware/efi/libstub/relocate.c | 4 +-
drivers/firmware/efi/libstub/secureboot.c | 4 +-
drivers/firmware/efi/libstub/tpm.c | 2 +-
drivers/firmware/efi/libstub/vsprintf.c | 564 +++++++++++++++++++++++++
drivers/firmware/efi/libstub/x86-stub.c | 124 +++---
include/linux/efi.h | 4 +-
24 files changed, 1211 insertions(+), 313 deletions(-)
create mode 100644 drivers/firmware/efi/libstub/vsprintf.c