1/*
2 * Copyright (c) 2021, Arm Limited. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7#include <arch.h>
8#include <asm_macros.S>
9#include <common/bl_common.h>
10#include <cortex_makalu.h>
11#include <cpu_macros.S>
12#include <plat_macros.S>
13
14/* Hardware handled coherency */
15#if HW_ASSISTED_COHERENCY == 0
16#error "Cortex Makalu 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 "Cortex Makalu supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0"
22#endif
23
24func cortex_makalu_reset_func
25	/* Disable speculative loads */
26	msr	SSBS, xzr
27	isb
28	ret
29endfunc cortex_makalu_reset_func
30
31	/* ----------------------------------------------------
32	 * HW will do the cache maintenance while powering down
33	 * ----------------------------------------------------
34	 */
35func cortex_makalu_core_pwr_dwn
36	/* ---------------------------------------------------
37	 * Enable CPU power down bit in power control register
38	 * ---------------------------------------------------
39	 */
40	mrs	x0, CORTEX_MAKALU_CPUPWRCTLR_EL1
41	orr	x0, x0, #CORTEX_MAKALU_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
42	msr	CORTEX_MAKALU_CPUPWRCTLR_EL1, x0
43	isb
44	ret
45endfunc cortex_makalu_core_pwr_dwn
46
47#if REPORT_ERRATA
48/*
49 * Errata printing function for Cortex Makalu. Must follow AAPCS.
50 */
51func cortex_makalu_errata_report
52	ret
53endfunc cortex_makalu_errata_report
54#endif
55
56	/* ---------------------------------------------
57	 * This function provides Cortex Makalu-specific
58	 * register information for crash reporting.
59	 * It needs to return with x6 pointing to
60	 * a list of register names in ascii and
61	 * x8 - x15 having values of registers to be
62	 * reported.
63	 * ---------------------------------------------
64	 */
65.section .rodata.cortex_makalu_regs, "aS"
66cortex_makalu_regs:  /* The ascii list of register names to be reported */
67	.asciz	"cpuectlr_el1", ""
68
69func cortex_makalu_cpu_reg_dump
70	adr	x6, cortex_makalu_regs
71	mrs	x8, CORTEX_MAKALU_CPUECTLR_EL1
72	ret
73endfunc cortex_makalu_cpu_reg_dump
74
75declare_cpu_ops cortex_makalu, CORTEX_MAKALU_MIDR, \
76	cortex_makalu_reset_func, \
77	cortex_makalu_core_pwr_dwn
78