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-rw-r--r--lib/cpus/aarch64/generic.S89
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/cpus/aarch64/generic.S b/lib/cpus/aarch64/generic.S
new file mode 100644
index 0000000..ef1f048
--- /dev/null
+++ b/lib/cpus/aarch64/generic.S
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+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <common/bl_common.h>
+#include <generic.h>
+#include <cpu_macros.S>
+#include <plat_macros.S>
+
+ /* ---------------------------------------------
+ * Disable L1 data cache and unified L2 cache
+ * ---------------------------------------------
+ */
+func generic_disable_dcache
+ mrs x1, sctlr_el3
+ bic x1, x1, #SCTLR_C_BIT
+ msr sctlr_el3, x1
+ isb
+ ret
+endfunc generic_disable_dcache
+
+func generic_core_pwr_dwn
+ mov x18, x30
+
+ /* ---------------------------------------------
+ * Turn off caches.
+ * ---------------------------------------------
+ */
+ bl generic_disable_dcache
+
+ /* ---------------------------------------------
+ * Flush L1 caches.
+ * ---------------------------------------------
+ */
+ mov x0, #DCCISW
+ bl dcsw_op_level1
+
+ ret x18
+endfunc generic_core_pwr_dwn
+
+func generic_cluster_pwr_dwn
+ mov x18, x30
+
+ /* ---------------------------------------------
+ * Turn off caches.
+ * ---------------------------------------------
+ */
+ bl generic_disable_dcache
+
+ /* ---------------------------------------------
+ * Flush L1 caches.
+ * ---------------------------------------------
+ */
+ mov x0, #DCCISW
+ bl dcsw_op_level1
+
+ /* ---------------------------------------------
+ * Disable the optional ACP.
+ * ---------------------------------------------
+ */
+ bl plat_disable_acp
+
+ /* ---------------------------------------------
+ * Flush L2 caches.
+ * ---------------------------------------------
+ */
+ mov x0, #DCCISW
+ bl dcsw_op_level2
+
+ ret x18
+
+endfunc generic_cluster_pwr_dwn
+
+/* ---------------------------------------------
+ * Unimplemented functions.
+ * ---------------------------------------------
+ */
+.equ generic_errata_report, 0
+.equ generic_cpu_reg_dump, 0
+.equ generic_reset_func, 0
+
+declare_cpu_ops generic, AARCH64_GENERIC_MIDR, \
+ generic_reset_func, \
+ generic_core_pwr_dwn, \
+ generic_cluster_pwr_dwn