1 /*
2 * Copyright (c) 2020, MediaTek Inc. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8
9 #include <common/debug.h>
10 #include <drivers/delay_timer.h>
11 #include <lib/mmio.h>
12
13 #include <mcucfg.h>
14 #include <mtspmc.h>
15 #include <mtspmc_private.h>
16
17
mcucfg_disable_gic_wakeup(uint32_t cluster,uint32_t cpu)18 void mcucfg_disable_gic_wakeup(uint32_t cluster, uint32_t cpu)
19 {
20 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(cpu));
21 }
22
mcucfg_enable_gic_wakeup(uint32_t cluster,uint32_t cpu)23 void mcucfg_enable_gic_wakeup(uint32_t cluster, uint32_t cpu)
24 {
25 mmio_clrbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(cpu));
26 }
27
mcucfg_set_bootaddr(uint32_t cluster,uint32_t cpu,uintptr_t bootaddr)28 void mcucfg_set_bootaddr(uint32_t cluster, uint32_t cpu, uintptr_t bootaddr)
29 {
30 assert(cluster == 0U);
31
32 mmio_write_32(per_cpu(cluster, cpu, MCUCFG_BOOTADDR), bootaddr);
33 }
34
mcucfg_get_bootaddr(uint32_t cluster,uint32_t cpu)35 uintptr_t mcucfg_get_bootaddr(uint32_t cluster, uint32_t cpu)
36 {
37 assert(cluster == 0U);
38
39 return (uintptr_t)mmio_read_32(per_cpu(cluster, cpu, MCUCFG_BOOTADDR));
40 }
41
mcucfg_init_archstate(uint32_t cluster,uint32_t cpu,bool arm64)42 void mcucfg_init_archstate(uint32_t cluster, uint32_t cpu, bool arm64)
43 {
44 uint32_t reg;
45
46 assert(cluster == 0U);
47
48 reg = per_cluster(cluster, MCUCFG_INITARCH);
49
50 if (arm64) {
51 mmio_setbits_32(reg, MCUCFG_INITARCH_CPU_BIT(cpu));
52 } else {
53 mmio_clrbits_32(reg, MCUCFG_INITARCH_CPU_BIT(cpu));
54 }
55 }
56
57 /**
58 * Return subsystem's power state.
59 *
60 * @mask: mask to SPM_CPU_PWR_STATUS to query the power state
61 * of one subsystem.
62 * RETURNS:
63 * 0 (the subsys was powered off)
64 * 1 (the subsys was powered on)
65 */
spm_get_powerstate(uint32_t mask)66 bool spm_get_powerstate(uint32_t mask)
67 {
68 return (mmio_read_32(SPM_CPU_PWR_STATUS) & mask) != 0U;
69 }
70
spm_get_cluster_powerstate(uint32_t cluster)71 bool spm_get_cluster_powerstate(uint32_t cluster)
72 {
73 assert(cluster == 0U);
74
75 return spm_get_powerstate(MP0_CPUTOP);
76 }
77
spm_get_cpu_powerstate(uint32_t cluster,uint32_t cpu)78 bool spm_get_cpu_powerstate(uint32_t cluster, uint32_t cpu)
79 {
80 uint32_t mask = BIT(cpu);
81
82 assert(cluster == 0U);
83
84 return spm_get_powerstate(mask);
85 }
86
spmc_init(void)87 int spmc_init(void)
88 {
89 INFO("SPM: enable CPC mode\n");
90
91 mmio_write_32(SPM_POWERON_CONFIG_EN, PROJECT_CODE | BCLK_CG_EN);
92
93 mmio_setbits_32(per_cpu(0, 1, SPM_CPU_PWR), PWR_RST_B);
94 mmio_setbits_32(per_cpu(0, 2, SPM_CPU_PWR), PWR_RST_B);
95 mmio_setbits_32(per_cpu(0, 3, SPM_CPU_PWR), PWR_RST_B);
96 mmio_setbits_32(per_cpu(0, 4, SPM_CPU_PWR), PWR_RST_B);
97 mmio_setbits_32(per_cpu(0, 5, SPM_CPU_PWR), PWR_RST_B);
98 mmio_setbits_32(per_cpu(0, 6, SPM_CPU_PWR), PWR_RST_B);
99 mmio_setbits_32(per_cpu(0, 7, SPM_CPU_PWR), PWR_RST_B);
100
101 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(1));
102 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(2));
103 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(3));
104 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(4));
105 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(5));
106 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(6));
107 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, GIC_WAKEUP_IGNORE(7));
108
109 mmio_clrbits_32(SPM_MCUSYS_PWR_CON, RESETPWRON_CONFIG);
110 mmio_clrbits_32(SPM_MP0_CPUTOP_PWR_CON, RESETPWRON_CONFIG);
111 mmio_clrbits_32(per_cpu(0, 0, SPM_CPU_PWR), RESETPWRON_CONFIG);
112
113 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, CPC_CTRL_ENABLE);
114
115 return 0;
116 }
117
118 /**
119 * Power on a core with specified cluster and core index
120 *
121 * @cluster: the cluster ID of the CPU which to be powered on
122 * @cpu: the CPU ID of the CPU which to be powered on
123 */
spm_poweron_cpu(uint32_t cluster,uint32_t cpu)124 void spm_poweron_cpu(uint32_t cluster, uint32_t cpu)
125 {
126 /* set to 0 after BIG VPROC bulk on & before B-core power on seq. */
127 if (cpu >= 4U) {
128 mmio_write_32(DREQ20_BIG_VPROC_ISO, 0U);
129 }
130
131 mmio_setbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, SSPM_ALL_PWR_CTRL_EN);
132 mmio_setbits_32(per_cpu(cluster, cpu, SPM_CPU_PWR), PWR_ON);
133
134 while (!spm_get_cpu_powerstate(cluster, cpu)) {
135 }
136
137 mmio_clrbits_32(MCUCFG_CPC_FLOW_CTRL_CFG, SSPM_ALL_PWR_CTRL_EN);
138
139 /* Enable Big CPU Last PC */
140 if (cpu >= 4U) {
141 mmio_clrbits_32(LAST_PC_REG(cpu), BIT(3));
142 }
143 }
144
145 /**
146 * Power off a core with specified cluster and core index
147 *
148 * @cluster: the cluster ID of the CPU which to be powered off
149 * @cpu: the CPU ID of the CPU which to be powered off
150 */
spm_poweroff_cpu(uint32_t cluster,uint32_t cpu)151 void spm_poweroff_cpu(uint32_t cluster, uint32_t cpu)
152 {
153 /* Set mp0_spmc_pwr_on_cpuX = 0 */
154 mmio_clrbits_32(per_cpu(cluster, cpu, SPM_CPU_PWR), PWR_ON);
155 }
156
157 /**
158 * Power off a cluster with specified index
159 *
160 * @cluster: the cluster index which to be powered off
161 */
spm_poweroff_cluster(uint32_t cluster)162 void spm_poweroff_cluster(uint32_t cluster)
163 {
164 /* No need to power on/off cluster on single cluster platform */
165 assert(false);
166 }
167
168 /**
169 * Power on a cluster with specified index
170 *
171 * @cluster: the cluster index which to be powered on
172 */
spm_poweron_cluster(uint32_t cluster)173 void spm_poweron_cluster(uint32_t cluster)
174 {
175 /* No need to power on/off cluster on single cluster platform */
176 assert(false);
177 }
178