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1 /*
2  * Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #include <assert.h>
8 
9 #include <libfdt.h>
10 
11 #include <common/bl_common.h>
12 #include <common/debug.h>
13 #include <drivers/arm/css/css_mhu_doorbell.h>
14 #include <drivers/arm/css/scmi.h>
15 #include <plat/arm/common/plat_arm.h>
16 #include <plat/common/platform.h>
17 
18 #include <sgi_ras.h>
19 #include <sgi_variant.h>
20 
21 sgi_platform_info_t sgi_plat_info;
22 
23 static scmi_channel_plat_info_t sgi575_scmi_plat_info = {
24 		.scmi_mbx_mem = CSS_SCMI_PAYLOAD_BASE,
25 		.db_reg_addr = PLAT_CSS_MHU_BASE + CSS_SCMI_MHU_DB_REG_OFF,
26 		.db_preserve_mask = 0xfffffffe,
27 		.db_modify_mask = 0x1,
28 		.ring_doorbell = &mhu_ring_doorbell,
29 };
30 
31 static scmi_channel_plat_info_t rd_n1e1_edge_scmi_plat_info[] = {
32 	{
33 		.scmi_mbx_mem = CSS_SCMI_PAYLOAD_BASE,
34 		.db_reg_addr = PLAT_CSS_MHU_BASE + SENDER_REG_SET(0),
35 		.db_preserve_mask = 0xfffffffe,
36 		.db_modify_mask = 0x1,
37 		.ring_doorbell = &mhuv2_ring_doorbell,
38 	},
39 	#if (CSS_SGI_CHIP_COUNT > 1)
40 	{
41 		.scmi_mbx_mem = CSS_SCMI_PAYLOAD_BASE +
42 			CSS_SGI_REMOTE_CHIP_MEM_OFFSET(1),
43 		.db_reg_addr = PLAT_CSS_MHU_BASE
44 			+ CSS_SGI_REMOTE_CHIP_MEM_OFFSET(1) + SENDER_REG_SET(0),
45 		.db_preserve_mask = 0xfffffffe,
46 		.db_modify_mask = 0x1,
47 		.ring_doorbell = &mhuv2_ring_doorbell,
48 	},
49 	#endif
50 	#if (CSS_SGI_CHIP_COUNT > 2)
51 	{
52 		.scmi_mbx_mem = CSS_SCMI_PAYLOAD_BASE +
53 			CSS_SGI_REMOTE_CHIP_MEM_OFFSET(2),
54 		.db_reg_addr = PLAT_CSS_MHU_BASE +
55 			CSS_SGI_REMOTE_CHIP_MEM_OFFSET(2) + SENDER_REG_SET(0),
56 		.db_preserve_mask = 0xfffffffe,
57 		.db_modify_mask = 0x1,
58 		.ring_doorbell = &mhuv2_ring_doorbell,
59 	},
60 	#endif
61 	#if (CSS_SGI_CHIP_COUNT > 3)
62 	{
63 		.scmi_mbx_mem = CSS_SCMI_PAYLOAD_BASE +
64 			CSS_SGI_REMOTE_CHIP_MEM_OFFSET(3),
65 		.db_reg_addr = PLAT_CSS_MHU_BASE +
66 			CSS_SGI_REMOTE_CHIP_MEM_OFFSET(3) + SENDER_REG_SET(0),
67 		.db_preserve_mask = 0xfffffffe,
68 		.db_modify_mask = 0x1,
69 		.ring_doorbell = &mhuv2_ring_doorbell,
70 	},
71 	#endif
72 };
73 
plat_css_get_scmi_info(int channel_id)74 scmi_channel_plat_info_t *plat_css_get_scmi_info(int channel_id)
75 {
76 	if (sgi_plat_info.platform_id == RD_N1E1_EDGE_SID_VER_PART_NUM ||
77 		sgi_plat_info.platform_id == RD_V1_SID_VER_PART_NUM ||
78 		sgi_plat_info.platform_id == RD_N2_SID_VER_PART_NUM) {
79 		if (channel_id >= ARRAY_SIZE(rd_n1e1_edge_scmi_plat_info))
80 			panic();
81 		return &rd_n1e1_edge_scmi_plat_info[channel_id];
82 	}
83 	else if (sgi_plat_info.platform_id == SGI575_SSC_VER_PART_NUM)
84 		return &sgi575_scmi_plat_info;
85 	else
86 		panic();
87 }
88 
bl31_early_platform_setup2(u_register_t arg0,u_register_t arg1,u_register_t arg2,u_register_t arg3)89 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
90 				u_register_t arg2, u_register_t arg3)
91 {
92 	sgi_plat_info.platform_id = plat_arm_sgi_get_platform_id();
93 	sgi_plat_info.config_id = plat_arm_sgi_get_config_id();
94 	sgi_plat_info.multi_chip_mode = plat_arm_sgi_get_multi_chip_mode();
95 
96 	arm_bl31_early_platform_setup((void *)arg0, arg1, arg2, (void *)arg3);
97 }
98 
sgi_bl31_common_platform_setup(void)99 void sgi_bl31_common_platform_setup(void)
100 {
101 	arm_bl31_platform_setup();
102 
103 #if RAS_EXTENSION
104 	sgi_ras_intr_handler_setup();
105 #endif
106 }
107 
plat_arm_psci_override_pm_ops(plat_psci_ops_t * ops)108 const plat_psci_ops_t *plat_arm_psci_override_pm_ops(plat_psci_ops_t *ops)
109 {
110 	/*
111 	 * For RD-E1-Edge, only CPU power ON/OFF, PSCI platform callbacks are
112 	 * supported.
113 	 */
114 	if (((sgi_plat_info.platform_id == RD_N1E1_EDGE_SID_VER_PART_NUM) &&
115 	    (sgi_plat_info.config_id == RD_E1_EDGE_CONFIG_ID))) {
116 		ops->cpu_standby = NULL;
117 		ops->system_off = NULL;
118 		ops->system_reset = NULL;
119 		ops->get_sys_suspend_power_state = NULL;
120 		ops->pwr_domain_suspend = NULL;
121 		ops->pwr_domain_suspend_finish = NULL;
122 	}
123 
124 	return css_scmi_override_pm_ops(ops);
125 }
126