Merge changes I36e45c0a,I69c21293 into integration

* changes:
  plat/qemu: add "max" cpu support
  Add support for QEMU "max" CPU

include/lib/cpus/aarch64/qemu_max.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2014-2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef QEMU_MAX_H
+#define QEMU_MAX_H
+
+#include <lib/utils_def.h>
+
+/*
+ *  QEMU MAX midr for revision 0
+ *  00   - Reserved for software use
+ *  0    - Variant
+ *  F    - Architectural features identified in ID_* registers
+ *  051  - 'Q', in a 12-bit field.
+ *  0    - Revision
+ */
+#define QEMU_MAX_MIDR		U(0x000F0510)
+
+#endif /* QEMU_MAX_H */

lib/cpus/aarch64/qemu_max.S

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2014-2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <arch.h>
+#include <asm_macros.S>
+#include <cpu_macros.S>
+#include <qemu_max.h>
+
+func qemu_max_core_pwr_dwn
+	/* ---------------------------------------------
+	 * Disable the Data Cache.
+	 * ---------------------------------------------
+	 */
+	mrs	x1, sctlr_el3
+	bic	x1, x1, #SCTLR_C_BIT
+	msr	sctlr_el3, x1
+	isb
+
+	/* ---------------------------------------------
+	 * Flush L1 cache to L2.
+	 * ---------------------------------------------
+	 */
+	mov	x18, lr
+	mov	x0, #DCCISW
+	bl	dcsw_op_level1
+	mov	lr, x18
+	ret
+endfunc qemu_max_core_pwr_dwn
+
+func qemu_max_cluster_pwr_dwn
+	/* ---------------------------------------------
+	 * Disable the Data Cache.
+	 * ---------------------------------------------
+	 */
+	mrs	x1, sctlr_el3
+	bic	x1, x1, #SCTLR_C_BIT
+	msr	sctlr_el3, x1
+	isb
+
+	/* ---------------------------------------------
+	 * Flush all caches to PoC.
+	 * ---------------------------------------------
+	 */
+	mov	x0, #DCCISW
+	b	dcsw_op_all
+endfunc qemu_max_cluster_pwr_dwn
+
+#if REPORT_ERRATA
+/*
+ * Errata printing function for QEMU "max". Must follow AAPCS.
+ */
+func qemu_max_errata_report
+	ret
+endfunc qemu_max_errata_report
+#endif
+
+	/* ---------------------------------------------
+	 * This function provides cpu specific
+	 * register information for crash reporting.
+	 * It needs to return with x6 pointing to
+	 * a list of register names in ascii and
+	 * x8 - x15 having values of registers to be
+	 * reported.
+	 * ---------------------------------------------
+	 */
+.section .rodata.qemu_max_regs, "aS"
+qemu_max_regs:  /* The ascii list of register names to be reported */
+	.asciz	"" /* no registers to report */
+
+func qemu_max_cpu_reg_dump
+	adr	x6, qemu_max_regs
+	ret
+endfunc qemu_max_cpu_reg_dump
+
+
+/* cpu_ops for QEMU MAX */
+declare_cpu_ops qemu_max, QEMU_MAX_MIDR, CPU_NO_RESET_FUNC, \
+	qemu_max_core_pwr_dwn, \
+	qemu_max_cluster_pwr_dwn

plat/qemu/qemu/platform.mk

@@ -109,6 +109,7 @@ BL1_SOURCES		+=	lib/cpus/aarch64/aem_generic.S		\
 				lib/cpus/aarch64/cortex_a53.S		\
 				lib/cpus/aarch64/cortex_a57.S		\
 				lib/cpus/aarch64/cortex_a72.S		\
+				lib/cpus/aarch64/qemu_max.S		\
 
 else
 BL1_SOURCES		+=	lib/cpus/${ARCH}/cortex_a15.S
@@ -163,6 +164,7 @@ BL31_SOURCES		+=	lib/cpus/aarch64/aem_generic.S		\
 				lib/cpus/aarch64/cortex_a53.S		\
 				lib/cpus/aarch64/cortex_a57.S		\
 				lib/cpus/aarch64/cortex_a72.S		\
+				lib/cpus/aarch64/qemu_max.S		\
 				lib/semihosting/semihosting.c		\
 				lib/semihosting/${ARCH}/semihosting_call.S \
 				plat/common/plat_psci_common.c		\

plat/qemu/qemu_sbsa/platform.mk

@@ -48,7 +48,8 @@ BL1_SOURCES		+=	drivers/io/io_semihosting.c			\
 				${PLAT_QEMU_COMMON_PATH}/qemu_bl1_setup.c
 
 BL1_SOURCES		+=	lib/cpus/aarch64/cortex_a57.S			\
-				lib/cpus/aarch64/cortex_a72.S
+				lib/cpus/aarch64/cortex_a72.S			\
+				lib/cpus/aarch64/qemu_max.S			\
 
 BL2_SOURCES		+=	drivers/io/io_semihosting.c			\
 				drivers/io/io_storage.c				\
@@ -76,6 +77,7 @@ QEMU_GIC_SOURCES	:=	${GICV3_SOURCES}				\
 
 BL31_SOURCES		+=	lib/cpus/aarch64/cortex_a57.S			\
 				lib/cpus/aarch64/cortex_a72.S			\
+				lib/cpus/aarch64/qemu_max.S			\
 				lib/semihosting/semihosting.c			\
 				lib/semihosting/${ARCH}/semihosting_call.S	\
 				plat/common/plat_psci_common.c			\