diff --git a/grub.macros b/grub.macros
index 082eb2b4b940e5211f48394f4118f302ce7dad9a..dfd6f5e9f3f620cc7688d3a9b07d7e1743172d3b 100644
--- a/grub.macros
+++ b/grub.macros
@@ -99,7 +99,7 @@
 %endif
 
 
-%global efi_only aarch64 %{arm} riscv64 loongarch64
+%global efi_only aarch64 %{arm} riscv64 loongarch64 sw_64
 %global efi_arch x86_64 ia64 %{efi_only}
 %ifarch %{efi_arch}
 %global with_efi_arch 1
@@ -117,13 +117,13 @@
 %{?with_efi_only:%global without_efi_only 1}
 
 ### fixme
-%ifarch aarch64 %{arm} riscv64 loongarch64
+%ifarch aarch64 %{arm} riscv64 loongarch64 sw_64
 %global efi_modules " tpm tpcm_kunpeng "
 %else
 %global efi_modules " backtrace chain tpm usb usbserial_common usbserial_pl2303 usbserial_ftdi usbserial_usbdebug keylayouts at_keyboard "
 %endif
 
-%ifarch aarch64 %{arm} riscv64
+%ifarch aarch64 %{arm} riscv64 loongarch64 sw_64
 %global legacy_provides -l
 %endif
 
@@ -200,6 +200,14 @@
 %global package_arch efi-loongarch64
 %endif
 
+%ifarch sw_64
+%global with_emu_arch 0
+%global efiarch sw64
+%global target_cpu_name sw_64
+%global grub_target_name sw64-efi
+%global package_arch efi-sw64
+%endif
+
 %global _target_platform %{target_cpu_name}-%{_vendor}-%{_target_os}%{?_gnu}
 %global _alt_target_platform %{alt_target_cpu_name}-%{_vendor}-%{_target_os}%{?_gnu}
 
diff --git a/grub2.spec b/grub2.spec
index b959e1dc95d6ae3e2bb516380f2a303a15e7aa1c..8c74f1c4908f58a8c385645544f07ca7ebf67072 100644
--- a/grub2.spec
+++ b/grub2.spec
@@ -23,7 +23,7 @@
 Name:		grub2
 Epoch:		1
 Version:	2.12
-Release:	44
+Release:	45
 Summary:	Bootloader with support for Linux, Multiboot and more
 License:	GPLv3+
 URL:		http://www.gnu.org/software/grub/
@@ -464,6 +464,12 @@ fi
 %{_datadir}/man/man*
 
 %changelog
+* Thu Oct 23 2025 yueyuankun <yueyuankun@kylinos.cn> - 1:2.12-45
+- Type:bugfix
+- CVE:NA
+- SUG:NA
+- DESC:SW64: Enable GRUB EFI build support for sw_64 architecture in grub.macros
+
 * Mon Aug 18 2025 zhangqiumiao <zhangqiumiao1@h-partners.com> - 1:2.12-44
 - Type:bugfix
 - CVE:NA