hv: remove CONFIG_PARTITION_MODE for pre-launched VM vE820 creation

Preparing for hybrid mode:

- create vE820 for pre-launched VMs and do other init code when the
  vm_config->type is PRE_LAUNCHED_VM.
- create ve820.c for each board because without wrapping by
  CONFIG_PARTITION_MODE, ve820_entry[] needs to be visible even when
  compiling target boards that haven't enabled pre-launched VMs.
- remove create_prelaunched_vm_e820() from vm.c and implement board
  specific function for each $(CONFIG_BOARD)/ve820.c. The reasons being:
  - don't need to define ve820_entry[32] for those boards that don't
    support pre-launched VMs.
  - more importantly, this makes it much easier to create different per-VM
    vE820 when it's needed.

Tracked-On: #2291
Signed-off-by: Zide Chen <zide.chen@intel.com>

hypervisor/Makefile

@@ -137,8 +137,8 @@ C_SRCS += arch/x86/seed/seed_sbl.c
 
 # configuration component
 C_SRCS += arch/x86/configs/vm_config.c
-ifeq ($(CONFIG_PARTITION_MODE),y)
 C_SRCS += arch/x86/configs/$(CONFIG_BOARD)/ve820.c
+ifeq ($(CONFIG_PARTITION_MODE),y)
 C_SRCS += arch/x86/configs/$(CONFIG_BOARD)/pt_dev.c
 endif
 

hypervisor/arch/x86/configs/apl-mrb/ve820.c

@@ -5,8 +5,10 @@
  */
 
 #include <e820.h>
+#include <vm.h>
 
-const struct e820_entry ve820_entry[E820_MAX_ENTRIES] = {
+#define VE820_ENTRIES_APL_MRB  5U
+static const struct e820_entry ve820_entry[VE820_ENTRIES_APL_MRB] = {
 	{	/* usable RAM under 1MB */
 		.baseaddr = 0x0UL,
 		.length   = 0xF0000UL,		/* 960KB */
@@ -37,3 +39,12 @@ const struct e820_entry ve820_entry[E820_MAX_ENTRIES] = {
 		.type     = E820_TYPE_RESERVED
 	},
 };
+
+/**
+ * @pre vm != NULL
+ */
+void create_prelaunched_vm_e820(struct acrn_vm *vm)
+{
+	vm->e820_entry_num = VE820_ENTRIES_APL_MRB;
+	vm->e820_entries = (struct e820_entry *)ve820_entry;
+}

hypervisor/arch/x86/configs/apl-up2/ve820.c

@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <vm.h>
+
+/**
+ * @pre vm != NULL
+ */
+void create_prelaunched_vm_e820(struct acrn_vm *vm)
+{
+	vm->e820_entry_num = 0U;
+	vm->e820_entries = NULL;
+}

hypervisor/arch/x86/configs/dnv-cb2/ve820.c

@@ -5,8 +5,10 @@
  */
 
 #include <e820.h>
+#include <vm.h>
 
-const struct e820_entry ve820_entry[E820_MAX_ENTRIES] = {
+#define VE820_ENTRIES_DNV_CB2	5U
+static const struct e820_entry ve820_entry[VE820_ENTRIES_DNV_CB2] = {
 	{	/* usable RAM under 1MB */
 		.baseaddr = 0x0UL,
 		.length   = 0xF0000UL,		/* 960KB */
@@ -37,3 +39,12 @@ const struct e820_entry ve820_entry[E820_MAX_ENTRIES] = {
 		.type     = E820_TYPE_RESERVED
 	},
 };
+
+/**
+ * @pre vm != NULL
+ */
+void create_prelaunched_vm_e820(struct acrn_vm *vm)
+{
+	vm->e820_entry_num = VE820_ENTRIES_DNV_CB2;
+	vm->e820_entries = (struct e820_entry *)ve820_entry;
+}

hypervisor/arch/x86/configs/nuc6cayh/ve820.c

@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <vm.h>
+
+/**
+ * @pre vm != NULL
+ */
+void create_prelaunched_vm_e820(struct acrn_vm *vm)
+{
+	vm->e820_entry_num = 0U;
+	vm->e820_entries = NULL;
+}

hypervisor/arch/x86/configs/nuc7i7bnh/ve820.c

@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <vm.h>
+
+/**
+ * @pre vm != NULL
+ */
+void create_prelaunched_vm_e820(struct acrn_vm *vm)
+{
+	vm->e820_entry_num = 0U;
+	vm->e820_entries = NULL;
+}

hypervisor/arch/x86/guest/vm.c

@@ -24,6 +24,7 @@
 #include <logmsg.h>
 #include <cat.h>
 #include <firmware.h>
+#include <board.h>
 
 vm_sw_loader_t vm_sw_loader;
 
@@ -145,15 +146,7 @@ uint16_t get_vm_pcpu_nums(const struct acrn_vm_config *vm_config)
 	}
 	return pcpu_num;
 }
-
+#endif
-/**
- * @pre vm != NULL
- */
-static void create_prelaunched_vm_e820(struct acrn_vm *vm)
-{
-	vm->e820_entry_num = E820_MAX_ENTRIES;
-	vm->e820_entries = (struct e820_entry *)ve820_entry;
-}
 
 /**
  * @pre vm != NULL && vm_config != NULL
@@ -187,7 +180,6 @@ static void prepare_prelaunched_vm_memmap(struct acrn_vm *vm, const struct acrn_
 		}
 	}
 }
-#endif
 
 /**
  * before boot sos_vm(service OS), call it to hide the HV RAM entry in e820 table from sos_vm
@@ -368,11 +360,12 @@ int32_t create_vm(uint16_t vm_id, struct acrn_vm_config *vm_config, struct acrn_
 
 		(void)memcpy_s(&vm->GUID[0], sizeof(vm->GUID),
 			&vm_config->GUID[0], sizeof(vm_config->GUID));
-#ifdef CONFIG_PARTITION_MODE
+
+		 if (vm_config->type == PRE_LAUNCHED_VM) {
 			create_prelaunched_vm_e820(vm);
 			prepare_prelaunched_vm_memmap(vm, vm_config);
 			(void)firmware_init_vm_boot_info(vm);
-#endif
+		 }
 	}
 
 	if (status == 0) {

hypervisor/include/arch/x86/board.h

@@ -8,6 +8,9 @@
 
 #include <types.h>
 
+/* forward declarations */
+struct acrn_vm;
+
 struct platform_clos_info {
 	uint32_t clos_mask;
 	uint32_t msr_index;
@@ -16,4 +19,7 @@ struct platform_clos_info {
 extern struct platform_clos_info platform_clos_array[];
 extern uint16_t platform_clos_num;
 
+/* board specific functions */
+void create_prelaunched_vm_e820(struct acrn_vm *vm);
+
 #endif /* BOARD_H */

hypervisor/include/arch/x86/e820.h

@@ -34,8 +34,6 @@ struct e820_mem_params {
 	uint64_t total_mem_size;
 };
 
-extern const struct e820_entry ve820_entry[E820_MAX_ENTRIES];
-
 /* HV read multiboot header to get e820 entries info and calc total RAM info */
 void init_e820(void);