Re: [PATCH v2 4/8] LoongArch: Add early startup code

[WANG Xuerui]

On 2/23/22 21:46, Xiaotian Wu wrote:
> Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn>
> Signed-off-by: Zhou Yang <zhouyang@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)
Reviewed-by: WANG Xuerui <git@xen0n.name>

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