[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/arm/lib/io-readsw-armv3.S b/src/kernel/linux/v4.14/arch/arm/lib/io-readsw-armv3.S
new file mode 100644
index 0000000..413da99
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/arm/lib/io-readsw-armv3.S
@@ -0,0 +1,106 @@
+/*
+ * linux/arch/arm/lib/io-readsw-armv3.S
+ *
+ * Copyright (C) 1995-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+.Linsw_bad_alignment:
+ adr r0, .Linsw_bad_align_msg
+ mov r2, lr
+ b panic
+.Linsw_bad_align_msg:
+ .asciz "insw: bad buffer alignment (0x%p, lr=0x%08lX)\n"
+ .align
+
+.Linsw_align: tst r1, #1
+ bne .Linsw_bad_alignment
+
+ ldr r3, [r0]
+ strb r3, [r1], #1
+ mov r3, r3, lsr #8
+ strb r3, [r1], #1
+
+ subs r2, r2, #1
+ reteq lr
+
+ENTRY(__raw_readsw)
+ teq r2, #0 @ do we have to check for the zero len?
+ reteq lr
+ tst r1, #3
+ bne .Linsw_align
+
+.Linsw_aligned: mov ip, #0xff
+ orr ip, ip, ip, lsl #8
+ stmfd sp!, {r4, r5, r6, lr}
+
+ subs r2, r2, #8
+ bmi .Lno_insw_8
+
+.Linsw_8_lp: ldr r3, [r0]
+ and r3, r3, ip
+ ldr r4, [r0]
+ orr r3, r3, r4, lsl #16
+
+ ldr r4, [r0]
+ and r4, r4, ip
+ ldr r5, [r0]
+ orr r4, r4, r5, lsl #16
+
+ ldr r5, [r0]
+ and r5, r5, ip
+ ldr r6, [r0]
+ orr r5, r5, r6, lsl #16
+
+ ldr r6, [r0]
+ and r6, r6, ip
+ ldr lr, [r0]
+ orr r6, r6, lr, lsl #16
+
+ stmia r1!, {r3 - r6}
+
+ subs r2, r2, #8
+ bpl .Linsw_8_lp
+
+ tst r2, #7
+ ldmeqfd sp!, {r4, r5, r6, pc}
+
+.Lno_insw_8: tst r2, #4
+ beq .Lno_insw_4
+
+ ldr r3, [r0]
+ and r3, r3, ip
+ ldr r4, [r0]
+ orr r3, r3, r4, lsl #16
+
+ ldr r4, [r0]
+ and r4, r4, ip
+ ldr r5, [r0]
+ orr r4, r4, r5, lsl #16
+
+ stmia r1!, {r3, r4}
+
+.Lno_insw_4: tst r2, #2
+ beq .Lno_insw_2
+
+ ldr r3, [r0]
+ and r3, r3, ip
+ ldr r4, [r0]
+ orr r3, r3, r4, lsl #16
+
+ str r3, [r1], #4
+
+.Lno_insw_2: tst r2, #1
+ ldrne r3, [r0]
+ strneb r3, [r1], #1
+ movne r3, r3, lsr #8
+ strneb r3, [r1]
+
+ ldmfd sp!, {r4, r5, r6, pc}
+
+