Separate out BL2, BL3-1 and BL3-2 early exception vectors from BL1

bl1/aarch64/early_exceptions.S used to be re-used by BL2, BL3-1 and
BL3-2.  There was some early SMC handling code in there that was not
required by the other bootloader stages.  Therefore this patch
introduces an even simpler exception vector source file for BL2,
BL3-1 and BL3-2.

Fixes ARM-software/tf-issues#38

Change-Id: I0244b80e9930b0f8035156a0bf91cc3e9a8f995d

1 files changed, 174 insertions, 0 deletions

diff --git a/common/aarch64/early_exceptions.S b/common/aarch64/early_exceptions.S
new file mode 100644
index 00000000..41bff97f
--- /dev/null
+++ b/common/aarch64/early_exceptions.S
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch.h>
+#include <bl_common.h>
+#include <platform.h>
+#include <runtime_svc.h>
+#include <asm_macros.S>
+
+	.globl	early_exceptions
+
+	.section	.vectors, "ax"; .align 11
+
+	/* -----------------------------------------------------
+	 * Very simple stackless exception handlers used by BL2
+	 * and BL3-1 bootloader stages. BL3-1 uses them before
+	 * stacks are setup. BL2 uses them throughout.
+	 * -----------------------------------------------------
+	 */
+	.align	7
+early_exceptions:
+	/* -----------------------------------------------------
+	 * Current EL with SP0 : 0x0 - 0x180
+	 * -----------------------------------------------------
+	 */
+SynchronousExceptionSP0:
+	mov	x0, #SYNC_EXCEPTION_SP_EL0
+	bl	plat_report_exception
+	b	SynchronousExceptionSP0
+	check_vector_size SynchronousExceptionSP0
+
+	.align	7
+IrqSP0:
+	mov	x0, #IRQ_SP_EL0
+	bl	plat_report_exception
+	b	IrqSP0
+	check_vector_size IrqSP0
+
+	.align	7
+FiqSP0:
+	mov	x0, #FIQ_SP_EL0
+	bl	plat_report_exception
+	b	FiqSP0
+	check_vector_size FiqSP0
+
+	.align	7
+SErrorSP0:
+	mov	x0, #SERROR_SP_EL0
+	bl	plat_report_exception
+	b	SErrorSP0
+	check_vector_size SErrorSP0
+
+	/* -----------------------------------------------------
+	 * Current EL with SPx: 0x200 - 0x380
+	 * -----------------------------------------------------
+	 */
+	.align	7
+SynchronousExceptionSPx:
+	mov	x0, #SYNC_EXCEPTION_SP_ELX
+	bl	plat_report_exception
+	b	SynchronousExceptionSPx
+	check_vector_size SynchronousExceptionSPx
+
+	.align	7
+IrqSPx:
+	mov	x0, #IRQ_SP_ELX
+	bl	plat_report_exception
+	b	IrqSPx
+	check_vector_size IrqSPx
+
+	.align	7
+FiqSPx:
+	mov	x0, #FIQ_SP_ELX
+	bl	plat_report_exception
+	b	FiqSPx
+	check_vector_size FiqSPx
+
+	.align	7
+SErrorSPx:
+	mov	x0, #SERROR_SP_ELX
+	bl	plat_report_exception
+	b	SErrorSPx
+	check_vector_size SErrorSPx
+
+	/* -----------------------------------------------------
+	 * Lower EL using AArch64 : 0x400 - 0x580
+	 * -----------------------------------------------------
+	 */
+	.align	7
+SynchronousExceptionA64:
+	mov	x0, #SYNC_EXCEPTION_AARCH64
+	bl	plat_report_exception
+	b	SynchronousExceptionA64
+	check_vector_size SynchronousExceptionA64
+
+	.align	7
+IrqA64:
+	mov	x0, #IRQ_AARCH64
+	bl	plat_report_exception
+	b	IrqA64
+	check_vector_size IrqA64
+
+	.align	7
+FiqA64:
+	mov	x0, #FIQ_AARCH64
+	bl	plat_report_exception
+	b	FiqA64
+	check_vector_size FiqA64
+
+	.align	7
+SErrorA64:
+	mov	x0, #SERROR_AARCH64
+	bl	plat_report_exception
+	b   	SErrorA64
+	check_vector_size SErrorA64
+
+	/* -----------------------------------------------------
+	 * Lower EL using AArch32 : 0x0 - 0x180
+	 * -----------------------------------------------------
+	 */
+	.align	7
+SynchronousExceptionA32:
+	mov	x0, #SYNC_EXCEPTION_AARCH32
+	bl	plat_report_exception
+	b	SynchronousExceptionA32
+	check_vector_size SynchronousExceptionA32
+
+	.align	7
+IrqA32:
+	mov	x0, #IRQ_AARCH32
+	bl	plat_report_exception
+	b	IrqA32
+	check_vector_size IrqA32
+
+	.align	7
+FiqA32:
+	mov	x0, #FIQ_AARCH32
+	bl	plat_report_exception
+	b	FiqA32
+	check_vector_size FiqA32
+
+	.align	7
+SErrorA32:
+	mov	x0, #SERROR_AARCH32
+	bl	plat_report_exception
+	b	SErrorA32
+	check_vector_size SErrorA32