diff options
Diffstat (limited to 'plat/xilinx/zynqmp/sip_svc_setup.c')
-rw-r--r-- | plat/xilinx/zynqmp/sip_svc_setup.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/plat/xilinx/zynqmp/sip_svc_setup.c b/plat/xilinx/zynqmp/sip_svc_setup.c new file mode 100644 index 00000000..ae6ecafc --- /dev/null +++ b/plat/xilinx/zynqmp/sip_svc_setup.c @@ -0,0 +1,90 @@ +/* + * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */ + +#include <runtime_svc.h> +#include <uuid.h> +#include "pm_svc_main.h" + +/* SMC function IDs for SiP Service queries */ +#define ZYNQMP_SIP_SVC_CALL_COUNT 0x8200ff00 +#define ZYNQMP_SIP_SVC_UID 0x8200ff01 +#define ZYNQMP_SIP_SVC_VERSION 0x8200ff03 + +/* SiP Service Calls version numbers */ +#define SIP_SVC_VERSION_MAJOR 0 +#define SIP_SVC_VERSION_MINOR 1 + +/* These macros are used to identify PM calls from the SMC function ID */ +#define PM_FID_MASK 0xf000u +#define PM_FID_VALUE 0u +#define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE) + +/* SiP Service UUID */ +DEFINE_SVC_UUID(zynqmp_sip_uuid, + 0x2a1d9b5c, 0x8605, 0x4023, 0xa6, 0x1b, + 0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5); + +/** + * sip_svc_setup() - Setup SiP Service + * + * Invokes PM setup + */ +static int32_t sip_svc_setup(void) +{ + /* PM implementation as SiP Service */ + pm_setup(); + + return 0; +} + +/** + * sip_svc_smc_handler() - Top-level SiP Service SMC handler + * + * Handler for all SiP SMC calls. Handles standard SIP requests + * and calls PM SMC handler if the call is for a PM-API function. + */ +uint64_t sip_svc_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) +{ + /* Let PM SMC handler deal with PM-related requests */ + if (is_pm_fid(smc_fid)) { + return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, + flags); + } + + switch (smc_fid) { + case ZYNQMP_SIP_SVC_CALL_COUNT: + /* PM functions + default functions */ + SMC_RET1(handle, PM_API_MAX + 2); + + case ZYNQMP_SIP_SVC_UID: + SMC_UUID_RET(handle, zynqmp_sip_uuid); + + case ZYNQMP_SIP_SVC_VERSION: + SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR); + + default: + WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid); + SMC_RET1(handle, SMC_UNK); + } +} + +/* Register PM Service Calls as runtime service */ +DECLARE_RT_SVC( + sip_svc, + OEN_SIP_START, + OEN_SIP_END, + SMC_TYPE_FAST, + sip_svc_setup, + sip_svc_smc_handler); |