1 /*
2 * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6 #include <assert.h>
7 #include <console.h>
8 #include <debug.h>
9 #include <mmio.h>
10 #include <mtk_plat_common.h>
11 #include <mtk_sip_svc.h>
12 #include <plat_sip_calls.h>
13 #include <runtime_svc.h>
14 #include <uuid.h>
15
16 /* Mediatek SiP Service UUID */
17 DEFINE_SVC_UUID(mtk_sip_svc_uid,
18 0xf7582ba4, 0x4262, 0x4d7d, 0x80, 0xe5,
19 0x8f, 0x95, 0x05, 0x00, 0x0f, 0x3d);
20
21 #pragma weak mediatek_plat_sip_handler
mediatek_plat_sip_handler(uint32_t smc_fid,uint64_t x1,uint64_t x2,uint64_t x3,uint64_t x4,void * cookie,void * handle,uint64_t flags)22 uint64_t mediatek_plat_sip_handler(uint32_t smc_fid,
23 uint64_t x1,
24 uint64_t x2,
25 uint64_t x3,
26 uint64_t x4,
27 void *cookie,
28 void *handle,
29 uint64_t flags)
30 {
31 ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
32 SMC_RET1(handle, SMC_UNK);
33 }
34
35 /*
36 * This function handles Mediatek defined SiP Calls */
mediatek_sip_handler(uint32_t smc_fid,uint64_t x1,uint64_t x2,uint64_t x3,uint64_t x4,void * cookie,void * handle,uint64_t flags)37 uint64_t mediatek_sip_handler(uint32_t smc_fid,
38 uint64_t x1,
39 uint64_t x2,
40 uint64_t x3,
41 uint64_t x4,
42 void *cookie,
43 void *handle,
44 uint64_t flags)
45 {
46 uint32_t ns;
47
48 /* if parameter is sent from SMC32. Clean top 32 bits */
49 clean_top_32b_of_param(smc_fid, &x1, &x2, &x3, &x4);
50
51 /* Determine which security state this SMC originated from */
52 ns = is_caller_non_secure(flags);
53 if (!ns) {
54 /* SiP SMC service secure world's call */
55 ;
56 } else {
57 /* SiP SMC service normal world's call */
58 switch (smc_fid) {
59 #if MTK_SIP_SET_AUTHORIZED_SECURE_REG_ENABLE
60 case MTK_SIP_SET_AUTHORIZED_SECURE_REG: {
61 /* only use ret here */
62 uint64_t ret;
63
64 ret = mt_sip_set_authorized_sreg((uint32_t)x1,
65 (uint32_t)x2);
66 SMC_RET1(handle, ret);
67 }
68 #endif
69 #if MTK_SIP_KERNEL_BOOT_ENABLE
70 case MTK_SIP_KERNEL_BOOT_AARCH32:
71 boot_to_kernel(x1, x2, x3, x4);
72 SMC_RET0(handle);
73 #endif
74 }
75 }
76
77 return mediatek_plat_sip_handler(smc_fid, x1, x2, x3, x4,
78 cookie, handle, flags);
79
80 }
81
82 /*
83 * This function is responsible for handling all SiP calls from the NS world
84 */
sip_smc_handler(uint32_t smc_fid,uint64_t x1,uint64_t x2,uint64_t x3,uint64_t x4,void * cookie,void * handle,uint64_t flags)85 uint64_t sip_smc_handler(uint32_t smc_fid,
86 uint64_t x1,
87 uint64_t x2,
88 uint64_t x3,
89 uint64_t x4,
90 void *cookie,
91 void *handle,
92 uint64_t flags)
93 {
94 switch (smc_fid) {
95 case SIP_SVC_CALL_COUNT:
96 /* Return the number of Mediatek SiP Service Calls. */
97 SMC_RET1(handle,
98 MTK_COMMON_SIP_NUM_CALLS + MTK_PLAT_SIP_NUM_CALLS);
99
100 case SIP_SVC_UID:
101 /* Return UID to the caller */
102 SMC_UUID_RET(handle, mtk_sip_svc_uid);
103
104 case SIP_SVC_VERSION:
105 /* Return the version of current implementation */
106 SMC_RET2(handle, MTK_SIP_SVC_VERSION_MAJOR,
107 MTK_SIP_SVC_VERSION_MINOR);
108
109 default:
110 return mediatek_sip_handler(smc_fid, x1, x2, x3, x4,
111 cookie, handle, flags);
112 }
113 }
114
115 /* Define a runtime service descriptor for fast SMC calls */
116 DECLARE_RT_SVC(
117 mediatek_sip_svc,
118 OEN_SIP_START,
119 OEN_SIP_END,
120 SMC_TYPE_FAST,
121 NULL,
122 sip_smc_handler
123 );
124