ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/arm/mm/abort-ev4.S b/marvell/linux/arch/arm/mm/abort-ev4.S
new file mode 100644
index 0000000..a10bcb8
--- /dev/null
+++ b/marvell/linux/arch/arm/mm/abort-ev4.S
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+/*
+ * Function: v4_early_abort
+ *
+ * Params : r2 = pt_regs
+ * : r4 = aborted context pc
+ * : r5 = aborted context psr
+ *
+ * Returns : r4 - r11, r13 preserved
+ *
+ * Purpose : obtain information about current aborted instruction.
+ * Note: we read user space. This means we might cause a data
+ * abort here if the I-TLB and D-TLB aren't seeing the same
+ * picture. Unfortunately, this does happen. We live with it.
+ */
+ .align 5
+ENTRY(v4_early_abort)
+ mrc p15, 0, r1, c5, c0, 0 @ get FSR
+ mrc p15, 0, r0, c6, c0, 0 @ get FAR
+ ldr r3, [r4] @ read aborted ARM instruction
+ uaccess_disable ip @ disable userspace access
+ bic r1, r1, #1 << 11 | 1 << 10 @ clear bits 11 and 10 of FSR
+ tst r3, #1 << 20 @ L = 1 -> write?
+ orreq r1, r1, #1 << 11 @ yes.
+ b do_DataAbort