[PATCH v6 00/10] Add support for LoongArch

[Xiaotian Wu]

LoongArch is a new Loongson 3A5000 CPU instruction set, you can read
documents[1] or visit the development community[2] to get more information.

[1]: https://loongson.github.io/LoongArch-Documentation/README-EN.html
[2]: https://github.com/loongson

This patch series will add the basic support for LoongArch architecture, it can
compile on LoongArch and display the GRUB UI.

The full LoongArch patch has two parts, this is the first part.

The second part needs to wait for the LoadFile2 patch to be merged upstream 
first.
See: https://github.com/loongarch64/grub/tree/dev/patchwork/efi

Please review the patches, thank you.

v1->v2:
- rebase on the last commit.
- fix some errors.
- change the year to 2022 for the new files.

v2->v3:
- based on the last commit.
- add a comment to setjmp.S
- complete LoongArch support for grub-mkrescue

v3->v4:
- based on the last commit.

v4->v5:
- Fix make distcheck failed.
- Add tests support.
- based on the last commit.

v5->v6:
- Support new relocation types.
- Fix some test cases.

Here is the test results:

============================================================================
Testsuite summary for GRUB 2.11
============================================================================
# TOTAL: 82
# PASS:  56
# SKIP:  8
# XFAIL: 0
# FAIL:  2
# XPASS: 0
# ERROR: 16
============================================================================
See ./test-suite.log
Please report to bug-grub@gnu.org
============================================================================


The full test log is here: 
https://github.com/loongarch64/grub/files/9239702/test-suite.log

There are two test cases failed:

FAIL: squashfs_test
FAIL: grub_func_test

The squashfs_test failed because FSTIME does not match:

Device proc: Filesystem type procfs - Sector size 512B - Total size 0KiB
Device loop0: Filesystem type squash4 - Last modification time 2022-08-02 
06:21:25 Tuesday - Sector size 512B - Total size 10680KiB
Device host: Filesystem type hostfs - Sector size 512B - Total size 0KiB

FSTIME FAIL
2022-08-02 14:21:25
Device loop0: Filesystem type squash4 - Last modification time 2022-08-02 
06:21:25 Tuesday - Sector size 512B - Total size 10680KiB
FAIL squashfs_test (exit status: 1)

This failure can be ignored because my timezone is UTC+8:

$ timedatectl
               Local time: 二 2022-08-02 14:47:45 CST
           Universal time: 二 2022-08-02 06:47:45 UTC
                 RTC time: 二 2022-08-02 06:47:46
                Time zone: Asia/Shanghai (CST, +0800)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

Xiaotian Wu (10):
  PE: Add LoongArch definitions
  Add LoongArch definitions
  LoongArch: Add setjmp implementation
  LoongArch: Add early startup code
  LoongArch: Add stubs for Linux loading commands
  LoongArch: Add awareness for LoongArch relocations
  LoongArch: Add auxiliary files
  LoongArch: Add to build system
  LoongArch: Support new relocation types
  tests: add support for LoongArch

 Makefile.util.def                        |   1 +
 conf/Makefile.common                     |   3 +
 configure.ac                             |  24 +-
 gentpl.py                                |  25 ++-
 grub-core/Makefile.am                    |   6 +
 grub-core/Makefile.core.def              |  16 ++
 grub-core/kern/efi/mm.c                  |   3 +-
 grub-core/kern/loongarch64/cache.c       |  39 ++++
 grub-core/kern/loongarch64/cache_flush.S |  33 +++
 grub-core/kern/loongarch64/dl.c          | 167 ++++++++++++++
 grub-core/kern/loongarch64/dl_helper.c   | 270 +++++++++++++++++++++++
 grub-core/kern/loongarch64/efi/init.c    |  77 +++++++
 grub-core/kern/loongarch64/efi/startup.S |  34 +++
 grub-core/lib/efi/halt.c                 |   2 +-
 grub-core/lib/loongarch64/setjmp.S       |  69 ++++++
 grub-core/lib/setjmp.S                   |   2 +
 grub-core/loader/loongarch64/linux.c     |  59 +++++
 include/grub/dl.h                        |   1 +
 include/grub/efi/api.h                   |   2 +-
 include/grub/efi/efi.h                   |   2 +-
 include/grub/efi/pe32.h                  |  36 +--
 include/grub/elf.h                       |  29 +++
 include/grub/loongarch64/efi/memory.h    |  24 ++
 include/grub/loongarch64/linux.h         |  31 +++
 include/grub/loongarch64/reloc.h         | 111 ++++++++++
 include/grub/loongarch64/setjmp.h        |  27 +++
 include/grub/loongarch64/time.h          |  28 +++
 include/grub/loongarch64/types.h         |  34 +++
 include/grub/util/install.h              |   1 +
 tests/ahci_test.in                       |   2 +-
 tests/ehci_test.in                       |   2 +-
 tests/ohci_test.in                       |   2 +-
 tests/pata_test.in                       |   2 +-
 tests/uhci_test.in                       |   2 +-
 tests/util/grub-shell.in                 |  14 ++
 util/grub-install-common.c               |  49 ++--
 util/grub-install.c                      |  16 ++
 util/grub-mkimagexx.c                    | 164 +++++++++++++-
 util/grub-mknetdir.c                     |   1 +
 util/grub-mkrescue.c                     |   8 +
 util/grub-module-verifier.c              |  31 +++
 util/mkimage.c                           |  16 ++
 42 files changed, 1402 insertions(+), 63 deletions(-)
 create mode 100644 grub-core/kern/loongarch64/cache.c
 create mode 100644 grub-core/kern/loongarch64/cache_flush.S
 create mode 100644 grub-core/kern/loongarch64/dl.c
 create mode 100644 grub-core/kern/loongarch64/dl_helper.c
 create mode 100644 grub-core/kern/loongarch64/efi/init.c
 create mode 100644 grub-core/kern/loongarch64/efi/startup.S
 create mode 100644 grub-core/lib/loongarch64/setjmp.S
 create mode 100644 grub-core/loader/loongarch64/linux.c
 create mode 100644 include/grub/loongarch64/efi/memory.h
 create mode 100644 include/grub/loongarch64/linux.h
 create mode 100644 include/grub/loongarch64/reloc.h
 create mode 100644 include/grub/loongarch64/setjmp.h
 create mode 100644 include/grub/loongarch64/time.h
 create mode 100644 include/grub/loongarch64/types.h

-- 
2.35.1