On entry, we need to save the system table pointer as well as our image handle. Add an early startup file that saves them and then brings us into our main function.
Signed-off-by: Zhou Yang <zhouy...@loongson.cn> Signed-off-by: Xiaotian Wu <wuxiaot...@loongson.cn> --- grub-core/kern/loongarch64/efi/startup.S | 34 ++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 grub-core/kern/loongarch64/efi/startup.S diff --git a/grub-core/kern/loongarch64/efi/startup.S b/grub-core/kern/loongarch64/efi/startup.S new file mode 100644 index 000000000..fc8123f8c --- /dev/null +++ b/grub-core/kern/loongarch64/efi/startup.S @@ -0,0 +1,34 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2022 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/symbol.h> + + .file "startup.S" + .text + +FUNCTION(_start) + /* + * EFI_SYSTEM_TABLE and EFI_HANDLE are passed in $a1/$a0. + */ + + la $a2, EXT_C(grub_efi_image_handle) + st.d $a0, $a2, 0 + la $a2, EXT_C(grub_efi_system_table) + st.d $a1, $a2, 0 + + b EXT_C(grub_main) -- 2.39.2 _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
