+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 1994 - 1999, 2000, 01, 06 Ralf Baechle
* Copyright (C) 1995, 1996 Paul M. Antoine
* Copyright (C) 2002, 2003, 2004, 2005, 2007 Maciej W. Rozycki
* Copyright (C) 2000, 2001, 2012 MIPS Technologies, Inc. All rights reserved.
* Copyright (C) 2014, Imagination Technologies Ltd.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <cpu_func.h>
+#include <hang.h>
+#include <init.h>
#include <asm/mipsregs.h>
#include <asm/addrspace.h>
#include <asm/system.h>
DECLARE_GLOBAL_DATA_PTR;
+static unsigned long saved_ebase;
+
static void show_regs(const struct pt_regs *regs)
{
const int field = 2 * sizeof(unsigned long);
set_handler(0x180, &except_vec3_generic, 0x80);
set_handler(0x280, &except_vec_ejtag_debug, 0x80);
+ saved_ebase = read_c0_ebase() & 0xfffff000;
+
write_c0_ebase(ebase);
clear_c0_status(ST0_BEV);
execution_hazard_barrier();
}
+
+void trap_restore(void)
+{
+ set_c0_status(ST0_BEV);
+ execution_hazard_barrier();
+
+#ifdef CONFIG_OVERRIDE_EXCEPTION_VECTOR_BASE
+ write_c0_ebase(CONFIG_NEW_EXCEPTION_VECTOR_BASE & 0xfffff000);
+#else
+ write_c0_ebase(saved_ebase);
+#endif
+
+ clear_c0_status(ST0_BEV);
+ execution_hazard_barrier();
+}