diff options
| author | Ahmad Khalifa <ahmadkhalifa570@gmail.com> | 2024-06-03 01:40:43 +0000 |
|---|---|---|
| committer | Gordon Tetlow <gordon@FreeBSD.org> | 2025-08-07 23:10:00 +0000 |
| commit | ce4fe4c4bfcd5908b5f4121623f6640e15261bc8 (patch) | |
| tree | 814c9b5757179bf9d7362513d2cd9081a5fd44ac /sys/amd64 | |
| parent | 2ea99b8ed14208286ec3c8d6ccc997537c13d195 (diff) | |
Add a new sysctl in order to diffrentiate UEFI architectures
With the new 32-bit UEFI loader, it's convenient to have a sysctl to
figure out how we booted. Can be accessed at machdep.efi_arch
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1098
(cherry picked from commit b538d4911004ca541507166b8ec9689d2e87d1aa)
(cherry picked from commit 0e8890a425bc778d323566c881e26bad7c54baf2)
Approved by: so
Security: FreeBSD-EN-25:12.efi
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/machdep.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c index ea0f164b2e56..9644e167d54d 100644 --- a/sys/amd64/amd64/machdep.c +++ b/sys/amd64/amd64/machdep.c @@ -1691,6 +1691,27 @@ SYSCTL_PROC(_machdep, OID_AUTO, efi_map, efi_map_sysctl_handler, "S,efi_map_header", "Raw EFI Memory Map"); +static int +efi_arch_sysctl_handler(SYSCTL_HANDLER_ARGS) +{ + char *arch; + caddr_t kmdp; + + kmdp = preload_search_by_type("elf kernel"); + if (kmdp == NULL) + kmdp = preload_search_by_type("elf64 kernel"); + + arch = (char *)preload_search_info(kmdp, + MODINFO_METADATA | MODINFOMD_EFI_ARCH); + if (arch == NULL) + return (0); + + return (SYSCTL_OUT_STR(req, arch)); +} +SYSCTL_PROC(_machdep, OID_AUTO, efi_arch, + CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, + efi_arch_sysctl_handler, "A", "EFI Firmware Architecture"); + void spinlock_enter(void) { |