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Diffstat (limited to 'src/arch/arm64/spintable_asm.S')
-rw-r--r--src/arch/arm64/spintable_asm.S38
1 files changed, 38 insertions, 0 deletions
diff --git a/src/arch/arm64/spintable_asm.S b/src/arch/arm64/spintable_asm.S
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index 0000000000..3066b7e679
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+++ b/src/arch/arm64/spintable_asm.S
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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 Google Inc.
+ *
+ * This program 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; version 2 of the License.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/asm.h>
+
+ENTRY(__wait_for_spin_table_request)
+ /* Entry here is in EL2 with the magic address in x0. */
+ mov x28, x0
+1:
+ ldr x27, [x28]
+ cmp x27, xzr
+ b.ne 2f
+ wfe
+ b 1b
+2:
+ /* Entry into the kernel. */
+ mov x0, xzr
+ mov x1, xzr
+ mov x2, xzr
+ mov x3, xzr
+ br x27
+ENDPROC(__wait_for_spin_table_request)