e100bf4cab
Signed-off-by: sunway_fw <sunway_fw@wxiat.com> (cherry picked from commit c77b80a2ab9a7dc8f49fe33d54ea3a47d39c7d36)
60 lines
2.0 KiB
Diff
60 lines
2.0 KiB
Diff
From d8825597e923d22c8f901c63a51ffd8253eb427d Mon Sep 17 00:00:00 2001
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From: sunway_fw <sunway_fw@wxiat.com>
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Date: Tue, 18 Feb 2025 14:50:17 +0800
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Subject: [PATCH 1/5] sw64: Add early startup code
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On entry, we need to save the system table pointer as well as our image
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handle. Add an early startup file that saves them and then brings us
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into our main function.
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Signed-off-by: sunway_fw <sunway_fw@wxiat.com>
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---
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grub-core/kern/sw64/efi/startup.S | 35 +++++++++++++++++++++++++++++++
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1 file changed, 35 insertions(+)
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create mode 100644 grub-core/kern/sw64/efi/startup.S
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diff --git a/grub-core/kern/sw64/efi/startup.S b/grub-core/kern/sw64/efi/startup.S
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new file mode 100644
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index 0000000..8143f75
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--- /dev/null
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+++ b/grub-core/kern/sw64/efi/startup.S
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@@ -0,0 +1,35 @@
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+/*
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+ * GRUB -- GRand Unified Bootloader
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+ * Copyright (C) 2018 Free Software Foundation, Inc.
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+ *
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+ * GRUB is free software: you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation, either version 3 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * GRUB is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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+ */
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+
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+#include <grub/symbol.h>
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+#include <grub/sw64/regdef.h>
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+
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+ .file "startup.S"
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+ .text
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+FUNCTION(_start)
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+ /*
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+ * EFI_SYSTEM_TABLE and EFI_HANDLE are passed in a1/a0.
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+ */
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+ ldih $29,0($27) !gpdisp!1
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+ ldi $29,0($29) !gpdisp!1
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+ ldi $20, EXT_C(grub_efi_image_handle)
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+ stl a0, 0($20)
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+ ldi $20, EXT_C(grub_efi_system_table)
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+ stl a1, 0($20)
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+ call $31, grub_main
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+ ret
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--
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2.33.0
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