hw/loongarch: Init efi_boot_memmap table

The efi_system_table adds a efi_boot_memmap configuration table.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-Id: <20240426091551.2397867-7-gaosong@loongson.cn>

2 files changed, 37 insertions, 0 deletions

diff --git a/include/hw/loongarch/boot.h b/include/hw/loongarch/boot.h
index cf0e4d4..76622af 100644
--- a/include/hw/loongarch/boot.h
+++ b/include/hw/loongarch/boot.h
@@ -21,6 +21,15 @@ typedef struct {
     uint8_t b[16];
 } efi_guid_t QEMU_ALIGNED(8);
 
+#define EFI_GUID(a, b, c, d...) (efi_guid_t){ {                                \
+        (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
+        (b) & 0xff, ((b) >> 8) & 0xff,                                         \
+        (c) & 0xff, ((c) >> 8) & 0xff, d } }
+
+#define LINUX_EFI_BOOT_MEMMAP_GUID \
+        EFI_GUID(0x800f683f, 0xd08b, 0x423a,  0xa2, 0x93, \
+                 0x96, 0x5c, 0x3c, 0x6f, 0xe2, 0xb4)
+
 struct efi_config_table {
     efi_guid_t guid;
     uint64_t *ptr;
@@ -56,6 +65,24 @@ struct efi_system_table {
     struct efi_configuration_table *tables;
 };
 
+typedef struct {
+    uint32_t type;
+    uint32_t pad;
+    uint64_t phys_addr;
+    uint64_t virt_addr;
+    uint64_t num_pages;
+    uint64_t attribute;
+} efi_memory_desc_t;
+
+struct efi_boot_memmap {
+    uint64_t map_size;
+    uint64_t desc_size;
+    uint32_t desc_ver;
+    uint64_t map_key;
+    uint64_t buff_size;
+    efi_memory_desc_t map[32];
+};
+
 struct loongarch_boot_info {
     uint64_t ram_size;
     const char *kernel_filename;
diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h
index d7a074d..8a9fe40 100644
--- a/include/hw/loongarch/virt.h
+++ b/include/hw/loongarch/virt.h
@@ -35,6 +35,16 @@
 
 #define COMMAND_LINE_SIZE       512
 
+extern struct memmap_entry *memmap_table;
+extern unsigned memmap_entries;
+
+struct memmap_entry {
+    uint64_t address;
+    uint64_t length;
+    uint32_t type;
+    uint32_t reserved;
+};
+
 struct LoongArchMachineState {
     /*< private >*/
     MachineState parent_obj;