From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 18:29:51 +0200
Subject: Adding upstream version 2.06.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 grub-core/kern/mips/cache_flush.S | 54 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 grub-core/kern/mips/cache_flush.S

(limited to 'grub-core/kern/mips/cache_flush.S')

diff --git a/grub-core/kern/mips/cache_flush.S b/grub-core/kern/mips/cache_flush.S
new file mode 100644
index 0000000..89961a0
--- /dev/null
+++ b/grub-core/kern/mips/cache_flush.S
@@ -0,0 +1,54 @@
+#ifndef CACHE_OP_DEFINED
+#define CACHE_OP_DEFINED 1
+	.macro cache_op op addr
+	.set mips3
+	cache \op, \addr
+	.set mips1
+	.endm
+	.macro sync_op
+	.set mips3
+	sync
+	.set mips1
+	.endm
+#endif
+
+	move $t2, $a0
+	addu $t3, $a0, $a1
+	srl $t2, $t2, 5
+	sll $t2, $t2, 5
+	addu $t3, $t3, 0x1f
+	srl $t3, $t3, 5
+	sll $t3, $t3, 5
+	move $t0, $t2
+	subu $t1, $t3, $t2
+1:
+	cache_op 1, 0($t0)
+	/* All four ways.  */
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+	cache_op 1, 1($t0)
+	cache_op 1, 2($t0)
+	cache_op 1, 3($t0)
+	addiu $t1, $t1, -0x20
+	bne $t1, $zero, 1b
+	 addiu $t0, $t0, 0x20
+
+#else
+	addiu $t1, $t1, -0x4
+	bne $t1, $zero, 1b
+	 addiu $t0, $t0, 0x4
+#endif
+	sync_op
+	move $t0, $t2
+	subu $t1, $t3, $t2
+2:
+	cache_op 0, 0($t0)
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+	addiu $t1, $t1, -0x20
+	bne $t1, $zero, 2b
+	 addiu $t0, $t0, 0x20
+#else
+	addiu $t1, $t1, -0x4
+	bne $t1, $zero, 2b
+	 addiu $t0, $t0, 0x4
+#endif
+	sync_op
-- 
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