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-rw-r--r--lib/cpus/aarch64/qemu_max.S81
1 files changed, 81 insertions, 0 deletions
diff --git a/lib/cpus/aarch64/qemu_max.S b/lib/cpus/aarch64/qemu_max.S
new file mode 100644
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--- /dev/null
+++ b/lib/cpus/aarch64/qemu_max.S
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+/*
+ * 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