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
9 #include <common/debug.h>
10 #include <common/runtime_svc.h>
11 #include <lib/mmio.h>
12 #include <tools_share/uuid.h>
13
14 #include <plat_sip_calls.h>
15 #include <rockchip_sip_svc.h>
16
17 /* Rockchip SiP Service UUID */
18 DEFINE_SVC_UUID2(rk_sip_svc_uid,
19 0xe2c76fe8, 0x3e31, 0xe611, 0xb7, 0x0d,
20 0x8f, 0x88, 0xee, 0x74, 0x7b, 0x72);
21
22 #pragma weak rockchip_plat_sip_handler
rockchip_plat_sip_handler(uint32_t smc_fid,u_register_t x1,u_register_t x2,u_register_t x3,u_register_t x4,void * cookie,void * handle,u_register_t flags)23 uintptr_t rockchip_plat_sip_handler(uint32_t smc_fid,
24 u_register_t x1,
25 u_register_t x2,
26 u_register_t x3,
27 u_register_t x4,
28 void *cookie,
29 void *handle,
30 u_register_t flags)
31 {
32 ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
33 SMC_RET1(handle, SMC_UNK);
34 }
35
36 /*
37 * This function is responsible for handling all SiP calls from the NS world
38 */
sip_smc_handler(uint32_t smc_fid,u_register_t x1,u_register_t x2,u_register_t x3,u_register_t x4,void * cookie,void * handle,u_register_t flags)39 uintptr_t sip_smc_handler(uint32_t smc_fid,
40 u_register_t x1,
41 u_register_t x2,
42 u_register_t x3,
43 u_register_t x4,
44 void *cookie,
45 void *handle,
46 u_register_t flags)
47 {
48 uint32_t ns;
49
50 /* Determine which security state this SMC originated from */
51 ns = is_caller_non_secure(flags);
52 if (!ns)
53 SMC_RET1(handle, SMC_UNK);
54
55 switch (smc_fid) {
56 case SIP_SVC_CALL_COUNT:
57 /* Return the number of Rockchip SiP Service Calls. */
58 SMC_RET1(handle,
59 RK_COMMON_SIP_NUM_CALLS + RK_PLAT_SIP_NUM_CALLS);
60
61 case SIP_SVC_UID:
62 /* Return UID to the caller */
63 SMC_UUID_RET(handle, rk_sip_svc_uid);
64
65 case SIP_SVC_VERSION:
66 /* Return the version of current implementation */
67 SMC_RET2(handle, RK_SIP_SVC_VERSION_MAJOR,
68 RK_SIP_SVC_VERSION_MINOR);
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