roms: Support compile the efi bios for loongarch

Added loongarch UEFI BIOS support to compiled scripts.

  UEFI code images require 16M alignment, flash images require
16M alignment, under the loongarch architecture.This is agreed
upon when the firmware is loaded in QEMU under Loongarch.

  The naming of UEFI under loongarch refers to the x86 and arm naming methods,
and the UEFI image names in x86 and arm are:
edk2-i386-code.fd
edk2-i386-vars.fd
edk2-arm-code.fd
edk2-arm-vars.fd
So on loongarch, we named it:
edk2-loongarch64-code.fd
edk2-loongarch64-vars.fd

Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Message-ID: <20240724022245.1317884-1-lixianglai@loongson.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

docs/system/loongarch/virt.rst

@@ -64,7 +64,7 @@ Note: You need get the latest cross-tools at https://github.com/loongson/build-t
 
 (3) Build BIOS:
 
-    See: https://github.com/tianocore/edk2-platforms/tree/master/Platform/Loongson/LoongArchQemuPkg#readme
+    See: https://github.com/tianocore/edk2/tree/master/OvmfPkg/LoongArchVirt#readme
 
 Note: To build the release version of the bios,  set --buildtarget=RELEASE,
       the bios file path:  Build/LoongArchQemu/RELEASE_GCC5/FV/QEMU_EFI.fd

meson.build

@@ -93,7 +93,7 @@ else
   iasl = find_program(get_option('iasl'), required: true)
 endif
 
-edk2_targets = [ 'arm-softmmu', 'aarch64-softmmu', 'i386-softmmu', 'x86_64-softmmu', 'riscv64-softmmu' ]
+edk2_targets = [ 'arm-softmmu', 'aarch64-softmmu', 'i386-softmmu', 'x86_64-softmmu', 'riscv64-softmmu', 'loongarch64-softmmu' ]
 unpack_edk2_blobs = false
 foreach target : edk2_targets
   if target in target_dirs

pc-bios/descriptors/60-edk2-loongarch64.json

@@ -0,0 +1,31 @@
+{
+    "description": "UEFI firmware for loongarch64",
+    "interface-types": [
+        "uefi"
+    ],
+    "mapping": {
+        "device": "flash",
+        "executable": {
+            "filename": "@DATADIR@/edk2-loongarch64-code.fd",
+            "format": "raw"
+        },
+        "nvram-template": {
+            "filename": "@DATADIR@/edk2-loongarch64-vars.fd",
+            "format": "raw"
+        }
+    },
+    "targets": [
+        {
+            "architecture": "loongarch64",
+            "machines": [
+                "virt*"
+            ]
+        }
+    ],
+    "features": [
+
+    ],
+    "tags": [
+
+    ]
+}

pc-bios/descriptors/meson.build

@@ -5,7 +5,8 @@ if unpack_edk2_blobs and get_option('install_blobs')
     '60-edk2-aarch64.json',
     '60-edk2-arm.json',
     '60-edk2-i386.json',
-    '60-edk2-x86_64.json'
+    '60-edk2-x86_64.json',
+    '60-edk2-loongarch64.json'
   ]
     configure_file(input: files(f),
                    output: f,

pc-bios/meson.build

@@ -11,6 +11,8 @@ if unpack_edk2_blobs
     'edk2-i386-vars.fd',
     'edk2-x86_64-code.fd',
     'edk2-x86_64-secure-code.fd',
+    'edk2-loongarch64-code.fd',
+    'edk2-loongarch64-vars.fd',
   ]
 
   foreach f : fds

roms/edk2-build.config

@@ -131,3 +131,16 @@ cpy1 = FV/RISCV_VIRT_CODE.fd  edk2-riscv-code.fd
 cpy2 = FV/RISCV_VIRT_VARS.fd  edk2-riscv-vars.fd
 pad1 = edk2-riscv-code.fd     32m
 pad2 = edk2-riscv-vars.fd     32m
+
+####################################################################################
+# LoongArch64
+
+[build.loongarch64.qemu]
+conf = OvmfPkg/LoongArchVirt/LoongArchVirtQemu.dsc
+arch = LOONGARCH64
+plat = LoongArchVirtQemu
+dest = ../pc-bios
+cpy1 = FV/QEMU_EFI.fd  edk2-loongarch64-code.fd
+pad1 = edk2-loongarch64-code.fd     16m
+cpy2 = FV/QEMU_VARS.fd  edk2-loongarch64-vars.fd
+pad2 = edk2-loongarch64-vars.fd     16m