intel: Introduce SMC support for mailbox command
This update allows normal world to send mailbox commands through SMC
Signed-off-by: Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
Change-Id: I587bea06422da90e5907d586495cd9e3bde900f6
diff --git a/plat/intel/soc/common/include/socfpga_sip_svc.h b/plat/intel/soc/common/include/socfpga_sip_svc.h
index 6bb41f3..2b1d983 100644
--- a/plat/intel/soc/common/include/socfpga_sip_svc.h
+++ b/plat/intel/soc/common/include/socfpga_sip_svc.h
@@ -28,6 +28,7 @@
#define INTEL_SIP_LEGACY_SMC_ECC_DBE 0xC200000D
#define INTEL_SIP_SMC_RSU_NOTIFY 0xC200000E
#define INTEL_SIP_SMC_RSU_RETRY_COUNTER 0xC200000F
+#define INTEL_SIP_SMC_MBOX_SEND_CMD 0xC200001E
/* FPGA config helpers */
#define INTEL_SIP_SMC_FPGA_CONFIG_ADDR 0x400000
diff --git a/plat/intel/soc/common/socfpga_sip_svc.c b/plat/intel/soc/common/socfpga_sip_svc.c
index 620126e..b4fe6d6 100644
--- a/plat/intel/soc/common/socfpga_sip_svc.c
+++ b/plat/intel/soc/common/socfpga_sip_svc.c
@@ -400,6 +400,26 @@
return INTEL_SIP_SMC_STATUS_OK;
}
+/* Mailbox services */
+static uint32_t intel_mbox_send_cmd(uint32_t cmd, uint32_t *args, int len,
+ int urgent, uint32_t *response,
+ int resp_len, int *mbox_status,
+ int *len_in_resp)
+{
+ int status = mailbox_send_cmd(MBOX_JOB_ID, cmd, args, len, urgent,
+ response, resp_len);
+
+ if (status < 0) {
+ *len_in_resp = 0;
+ *mbox_status = -status;
+ return INTEL_SIP_SMC_STATUS_ERROR;
+ }
+
+ *mbox_status = 0;
+ *len_in_resp = status;
+ return INTEL_SIP_SMC_STATUS_OK;
+}
+
/*
* This function is responsible for handling all SiP calls from the NS world
*/
@@ -418,6 +438,8 @@
uint32_t completed_addr[3];
uint64_t rsu_respbuf[9];
uint32_t count = 0;
+ u_register_t x5, x6;
+ int mbox_status, len_in_resp;
switch (smc_fid) {
case SIP_SVC_UID:
@@ -509,6 +531,14 @@
SMC_RET2(handle, status, val);
}
+ case INTEL_SIP_SMC_MBOX_SEND_CMD:
+ x5 = SMC_GET_GP(handle, CTX_GPREG_X5);
+ x6 = SMC_GET_GP(handle, CTX_GPREG_X6);
+ status = intel_mbox_send_cmd(x1, (uint32_t *)x2, x3, x4,
+ (uint32_t *)x5, x6, &mbox_status,
+ &len_in_resp);
+ SMC_RET4(handle, status, mbox_status, x5, len_in_resp);
+
default:
return socfpga_sip_handler(smc_fid, x1, x2, x3, x4,
cookie, handle, flags);