hv: merge SBL and UEFI related stuff under bsp

This patch unifies the bsp interface between UEFI and SBL.

Tracked-On: #2708
Signed-off-by: Tw <wei.tan@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/bsp/firmware_wrapper.c

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <hypervisor.h>
+#include <multiboot.h>
+#include <firmware.h>
+#include <firmware_sbl.h>
+#include <firmware_uefi.h>
+
+static struct firmware_operations *firmware_ops;
+
+static bool is_firmware_sbl(void)
+{
+	bool ret = false;
+	struct multiboot_info *mbi = NULL;
+	size_t i;
+	const char *sbl_candidates[] = {
+		"Slim BootLoader",
+		"Intel IOTG/TSD ABL",
+	};
+
+	mbi = (struct multiboot_info *)hpa2hva((uint64_t)boot_regs[1]);
+	if (mbi != NULL) {
+		if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_LOADER_NAME) != 0U) {
+			for (i = 0; i < sizeof(sbl_candidates); i++) {
+				if (strcmp(hpa2hva(mbi->mi_loader_name), sbl_candidates[i]) == 0) {
+					ret = true;
+					break;
+				}
+			}
+		}
+	}
+
+	return ret;
+}
+
+/**
+ * @pre: this function is called during detect mode which is very early stage,
+ * other exported interfaces should not be called beforehand.
+ */
+void init_firmware_operations(void)
+{
+	if (is_firmware_sbl()) {
+		firmware_ops = sbl_get_firmware_operations();
+	} else {
+		firmware_ops = uefi_get_firmware_operations();
+	}
+}
+
+
+/* @pre: firmware_ops->init != NULL */
+void init_firmware(void)
+{
+#ifndef CONFIG_CONSTANT_ACPI
+	acpi_fixup();
+#endif
+	firmware_ops->init();
+}
+
+/* @pre: firmware_ops->get_ap_trampoline != NULL */
+uint64_t firmware_get_ap_trampoline(void)
+{
+	return firmware_ops->get_ap_trampoline();
+}
+
+/* @pre: firmware_ops->get_rsdp != NULL */
+void *firmware_get_rsdp(void)
+{
+	return firmware_ops->get_rsdp();
+}
+
+/* @pre: firmware_ops->init_irq != NULL */
+void firmware_init_irq(void)
+{
+	return firmware_ops->init_irq();
+}