From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 11:13:47 +0200
Subject: Adding upstream version 2.8.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 lib/cpus/aarch64/neoverse_e1.S | 81 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 lib/cpus/aarch64/neoverse_e1.S

(limited to 'lib/cpus/aarch64/neoverse_e1.S')

diff --git a/lib/cpus/aarch64/neoverse_e1.S b/lib/cpus/aarch64/neoverse_e1.S
new file mode 100644
index 0000000..96b63cf
--- /dev/null
+++ b/lib/cpus/aarch64/neoverse_e1.S
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <arch.h>
+#include <asm_macros.S>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <neoverse_e1.h>
+#include <cpu_macros.S>
+#include <plat_macros.S>
+
+/* Hardware handled coherency */
+#if HW_ASSISTED_COHERENCY == 0
+#error "Neoverse E1 must be compiled with HW_ASSISTED_COHERENCY enabled"
+#endif
+
+/* 64-bit only core */
+#if CTX_INCLUDE_AARCH32_REGS == 1
+#error "Neoverse-E1 supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0"
+#endif
+
+	/* -------------------------------------------------
+	 * The CPU Ops reset function for Neoverse-E1.
+	 * Shall clobber: x0-x19
+	 * -------------------------------------------------
+	 */
+func neoverse_e1_reset_func
+	mov	x19, x30
+
+#if ERRATA_DSU_936184
+	bl	errata_dsu_936184_wa
+#endif
+
+	ret	x19
+endfunc neoverse_e1_reset_func
+
+func neoverse_e1_cpu_pwr_dwn
+	mrs	x0, NEOVERSE_E1_CPUPWRCTLR_EL1
+	orr	x0, x0, #NEOVERSE_E1_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
+	msr	NEOVERSE_E1_CPUPWRCTLR_EL1, x0
+	isb
+	ret
+endfunc neoverse_e1_cpu_pwr_dwn
+
+#if REPORT_ERRATA
+/*
+ * Errata printing function for Neoverse N1. Must follow AAPCS.
+ */
+func neoverse_e1_errata_report
+	stp	x8, x30, [sp, #-16]!
+
+	bl	cpu_get_rev_var
+	mov	x8, x0
+
+	/*
+	 * Report all errata. The revision-variant information is passed to
+	 * checking functions of each errata.
+	 */
+	report_errata ERRATA_DSU_936184, neoverse_e1, dsu_936184
+
+	ldp	x8, x30, [sp], #16
+	ret
+endfunc neoverse_e1_errata_report
+#endif
+
+
+.section .rodata.neoverse_e1_regs, "aS"
+neoverse_e1_regs:  /* The ascii list of register names to be reported */
+	.asciz	"cpuectlr_el1", ""
+
+func neoverse_e1_cpu_reg_dump
+	adr	x6, neoverse_e1_regs
+	mrs	x8, NEOVERSE_E1_ECTLR_EL1
+	ret
+endfunc neoverse_e1_cpu_reg_dump
+
+declare_cpu_ops neoverse_e1, NEOVERSE_E1_MIDR, \
+	neoverse_e1_reset_func, \
+	neoverse_e1_cpu_pwr_dwn
-- 
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