brillo: Add initial EFI A/B boot source files.

BUG=29123391
TEST=Manually tested output full-disk-image.img with qemu. Checked for
presence of EFI application and executed it.

Change-Id: I5bc4fd5833b2c476dc6f6d4974720f42e3c2bd12

3 files changed, 94 insertions, 0 deletions

diff --git a/brillo_uefi_x86_64/boot_loader/Makefile b/brillo_uefi_x86_64/boot_loader/Makefile
new file mode 100644
index 0000000..af55a56
--- /dev/null
+++ b/brillo_uefi_x86_64/boot_loader/Makefile
@@ -0,0 +1,60 @@
+#
+# Copyright 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Note: This is not invoked by Android build system and is innteded to aid
+#       users to locally build the boot loader application.
+# TODO: Port this as an Android.mk and add gnu-efi to external/.
+
+# EFI make flags and arguments
+EFI_CC          = gcc
+EFI_LD          = ld
+EFI_OBJCOPY     = objcopy
+
+EFI_SRC_FILES   = main.c
+EFI_OBJ_FILES   = $(patsubst %.c,%.o,$(EFI_SRC_FILES))
+EFI_TARGET      = brillo_boot_loader.efi
+EFI_SHARED_OBJ  = $(patsubst %.efi,%.so,$(EFI_TARGET))
+
+EFI_CFLAGS  = -I/usr/include/efi \
+                -I/usr/include/efi/x86_64 \
+                -I/usr/include/efi/protocol \
+                -fno-stack-protector -fpic \
+                -fshort-wchar -mno-red-zone -Wall \
+                -DEFI_FUNCTION_WRAPPER
+
+EFI_LDFLAGS = -nostdlib -znocombreloc -T /usr/lib/elf_x86_64_efi.lds -shared \
+                -Bsymbolic -L /usr/lib/ /usr/lib/crt0-efi-x86_64.o \
+                /usr/lib/elf_x86_64_efi.lds
+EFI_LDLIBS  = -lefi -lgnuefi
+
+EFI_OBJCOPY_SECTIONS    = -j .text -j .sdata -j .data -j .dynamic \
+                            -j .dynsym  -j .rel -j .rela -j .reloc
+EFI_OBJCOPY_TARGET      = --target=efi-app-x86_64
+
+
+all: $(EFI_TARGET)
+
+$(EFI_OBJ_FILES): $(EFI_SRC_FILES)
+	$(EFI_CC) $(EFI_CFLAGS) -c -o $(EFI_OBJ_FILES) $(EFI_SRC_FILES)
+
+$(EFI_SHARED_OBJ): $(EFI_OBJ_FILES)
+	$(EFI_LD) $(EFI_LDFLAGS) $(EFI_OBJ_FILES) -o $@ $(EFI_LDLIBS)
+
+$(EFI_TARGET): $(EFI_SHARED_OBJ)
+	$(EFI_OBJCOPY) $(EFI_OBJCOPY_SECTIONS) $(EFI_OBJCOPY_TARGET) $^ $@
+
+clean:
+	rm  $(EFI_OBJ_FILES) $(EFI_SHARED_OBJ) $(EFI_TARGET)
\ No newline at end of file
diff --git a/brillo_uefi_x86_64/boot_loader/brillo_boot_loader.efi b/brillo_uefi_x86_64/boot_loader/brillo_boot_loader.efi
new file mode 100755
index 0000000..1e10013
--- /dev/null
+++ b/brillo_uefi_x86_64/boot_loader/brillo_boot_loader.efi
diff --git a/brillo_uefi_x86_64/boot_loader/main.c b/brillo_uefi_x86_64/boot_loader/main.c
new file mode 100644
index 0000000..b12950e
--- /dev/null
+++ b/brillo_uefi_x86_64/boot_loader/main.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <efi.h>
+#include <efilib.h>
+
+EFI_STATUS EFIAPI efi_main (EFI_HANDLE ImageHandle,
+                            EFI_SYSTEM_TABLE* SystemTable) {
+  InitializeLib(ImageHandle, SystemTable);
+  Print(L"Brillo EFI A/B BOOT LOADER\n");
+
+  return EFI_SUCCESS;
+}