1 /*
2 * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8 #include <debug.h>
9 #include <mmio.h>
10 #include <plat_sip_calls.h>
11 #include <rockchip_sip_svc.h>
12 #include <runtime_svc.h>
13 #include <uuid.h>
14
15 /* Rockchip SiP Service UUID */
16 DEFINE_SVC_UUID(rk_sip_svc_uid,
17 0xe86fc7e2, 0x313e, 0x11e6, 0xb7, 0x0d,
18 0x8f, 0x88, 0xee, 0x74, 0x7b, 0x72);
19
20 #pragma weak rockchip_plat_sip_handler
rockchip_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)21 uint64_t rockchip_plat_sip_handler(uint32_t smc_fid,
22 uint64_t x1,
23 uint64_t x2,
24 uint64_t x3,
25 uint64_t x4,
26 void *cookie,
27 void *handle,
28 uint64_t flags)
29 {
30 ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
31 SMC_RET1(handle, SMC_UNK);
32 }
33
34 /*
35 * This function is responsible for handling all SiP calls from the NS world
36 */
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)37 uint64_t sip_smc_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 /* Determine which security state this SMC originated from */
49 ns = is_caller_non_secure(flags);
50 if (!ns)
51 SMC_RET1(handle, SMC_UNK);
52
53 switch (smc_fid) {
54 case SIP_SVC_CALL_COUNT:
55 /* Return the number of Rockchip SiP Service Calls. */
56 SMC_RET1(handle,
57 RK_COMMON_SIP_NUM_CALLS + RK_PLAT_SIP_NUM_CALLS);
58
59 case SIP_SVC_UID:
60 /* Return UID to the caller */
61 SMC_UUID_RET(handle, rk_sip_svc_uid);
62 break;
63
64 case SIP_SVC_VERSION:
65 /* Return the version of current implementation */
66 SMC_RET2(handle, RK_SIP_SVC_VERSION_MAJOR,
67 RK_SIP_SVC_VERSION_MINOR);
68 break;
69
70 default:
71 return rockchip_plat_sip_handler(smc_fid, x1, x2, x3, x4,
72 cookie, handle, flags);
73 }
74 }
75
76 /* Define a runtime service descriptor for fast SMC calls */
77 DECLARE_RT_SVC(
78 rockchip_sip_svc,
79 OEN_SIP_START,
80 OEN_SIP_END,
81 SMC_TYPE_FAST,
82 NULL,
83 sip_smc_handler
84 );
85