zynqmp: pm: Implemented pm API functions to load the bitstream into PL

This patch adds pm_fpga_load() and pm_fpga_get_status() API's to provide
the Access to the xilfpga library to load the bitstream into zynqmp
PL region.
Signed-off-by: Nava kishore Manne <navam@xilinx.com>

plat/xilinx/zynqmp/pm_service/pm_api_sys.c

@@ -497,3 +497,47 @@ enum pm_ret_status pm_mmio_read(uintptr_t address, unsigned int *value)
 	PM_PACK_PAYLOAD2(payload, PM_MMIO_READ, address);
 	return pm_ipi_send_sync(primary_proc, payload, value);
 }
+
+/**
+ * pm_fpga_load() - Load the bitstream into the PL.
+ *
+ * This function provides access to the xilfpga library to load
+ * the Bit-stream into PL.
+ *
+ * address_low: lower 32-bit Linear memory space address
+ *
+ * address_high: higher 32-bit Linear memory space address
+ *
+ * size:	Number of 32bit words
+ *
+ * @return      Returns status, either success or error+reason
+ */
+enum pm_ret_status pm_fpga_load(uint32_t address_low,
+				uint32_t address_high,
+				uint32_t size,
+				uint32_t flags)
+{
+	uint32_t payload[PAYLOAD_ARG_CNT];
+
+	/* Send request to the PMU */
+	PM_PACK_PAYLOAD5(payload, PM_FPGA_LOAD, address_high, address_low,
+						size, flags);
+	return pm_ipi_send(primary_proc, payload);
+}
+
+/**
+ * pm_fpga_get_status() - Read value from fpga status register
+ * @value       Value to read
+ *
+ * This function provides access to the xilfpga library to get
+ * the fpga status
+ * @return      Returns status, either success or error+reason
+ */
+enum pm_ret_status pm_fpga_get_status(unsigned int *value)
+{
+	uint32_t payload[PAYLOAD_ARG_CNT];
+
+	/* Send request to the PMU */
+	PM_PACK_PAYLOAD1(payload, PM_FPGA_GET_STATUS);
+	return pm_ipi_send_sync(primary_proc, payload, value);
+}

plat/xilinx/zynqmp/pm_service/pm_api_sys.h

@@ -109,4 +109,10 @@ enum pm_ret_status pm_mmio_write(uintptr_t address,
 				 unsigned int mask,
 				 unsigned int value);
 enum pm_ret_status pm_mmio_read(uintptr_t address, unsigned int *value);
+enum pm_ret_status pm_fpga_load(uint32_t address_high,
+				uint32_t address_low,
+				uint32_t size,
+				uint32_t flags);
+enum pm_ret_status pm_fpga_get_status(unsigned int *value);
+
 #endif /* _PM_API_SYS_H_ */

plat/xilinx/zynqmp/pm_service/pm_defs.h

@@ -87,6 +87,8 @@ enum pm_api_id {
 	PM_MMIO_WRITE,
 	PM_MMIO_READ,
 	PM_INIT,
+	PM_FPGA_LOAD,
+	PM_FPGA_GET_STATUS,
 	PM_API_MAX
 };
 

plat/xilinx/zynqmp/pm_service/pm_svc_main.c

@@ -228,6 +228,19 @@ uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
 		ret = pm_mmio_read(pm_arg[0], &value);
 		SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
 	}
+
+	case PM_FPGA_LOAD:
+		ret = pm_fpga_load(pm_arg[0], pm_arg[1], pm_arg[2], pm_arg[3]);
+		SMC_RET1(handle, (uint64_t)ret);
+
+	case PM_FPGA_GET_STATUS:
+	{
+		uint32_t value;
+
+		ret = pm_fpga_get_status(&value);
+		SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
+	}
+
 	default:
 		WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid);
 		SMC_RET1(handle, SMC_UNK);