1/*
2 * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6#include <arch.h>
7#include <asm_macros.S>
8#include <common/bl_common.h>
9#include <common/debug.h>
10#include <neoverse_e1.h>
11#include <cpu_macros.S>
12#include <plat_macros.S>
13
14/* Hardware handled coherency */
15#if HW_ASSISTED_COHERENCY == 0
16#error "Neoverse E1 must be compiled with HW_ASSISTED_COHERENCY enabled"
17#endif
18
19/* 64-bit only core */
20#if CTX_INCLUDE_AARCH32_REGS == 1
21#error "Neoverse-E1 supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0"
22#endif
23
24	/* -------------------------------------------------
25	 * The CPU Ops reset function for Neoverse-E1.
26	 * Shall clobber: x0-x19
27	 * -------------------------------------------------
28	 */
29func neoverse_e1_reset_func
30	mov	x19, x30
31
32#if ERRATA_DSU_936184
33	bl	errata_dsu_936184_wa
34#endif
35
36	ret	x19
37endfunc neoverse_e1_reset_func
38
39func neoverse_e1_cpu_pwr_dwn
40	mrs	x0, NEOVERSE_E1_CPUPWRCTLR_EL1
41	orr	x0, x0, #NEOVERSE_E1_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
42	msr	NEOVERSE_E1_CPUPWRCTLR_EL1, x0
43	isb
44	ret
45endfunc neoverse_e1_cpu_pwr_dwn
46
47#if REPORT_ERRATA
48/*
49 * Errata printing function for Neoverse N1. Must follow AAPCS.
50 */
51func neoverse_e1_errata_report
52	stp	x8, x30, [sp, #-16]!
53
54	bl	cpu_get_rev_var
55	mov	x8, x0
56
57	/*
58	 * Report all errata. The revision-variant information is passed to
59	 * checking functions of each errata.
60	 */
61	report_errata ERRATA_DSU_936184, neoverse_e1, dsu_936184
62
63	ldp	x8, x30, [sp], #16
64	ret
65endfunc neoverse_e1_errata_report
66#endif
67
68
69.section .rodata.neoverse_e1_regs, "aS"
70neoverse_e1_regs:  /* The ascii list of register names to be reported */
71	.asciz	"cpuectlr_el1", ""
72
73func neoverse_e1_cpu_reg_dump
74	adr	x6, neoverse_e1_regs
75	mrs	x8, NEOVERSE_E1_ECTLR_EL1
76	ret
77endfunc neoverse_e1_cpu_reg_dump
78
79declare_cpu_ops neoverse_e1, NEOVERSE_E1_MIDR, \
80	neoverse_e1_reset_func, \
81	neoverse_e1_cpu_pwr_dwn
82