7 files changed, 149 insertions, 0 deletions
diff --git a/Lessons/Lesson_05/Conf/target.txt b/Lessons/Lesson_05/Conf/target.txt
new file mode 100644
index 0000000..c109dcf
--- /dev/null
+++ b/Lessons/Lesson_05/Conf/target.txt
@@ -0,0 +1,7 @@
+ACTIVE_PLATFORM       = UefiLessonsPkg/UefiLessonsPkg.dsc
+TARGET                = RELEASE
+TARGET_ARCH           = X64
+TOOL_CHAIN_CONF       = Conf/tools_def.txt
+TOOL_CHAIN_TAG        = GCC5
+BUILD_RULE_CONF = Conf/build_rule.txt
+
diff --git a/Lessons/Lesson_05/README.md b/Lessons/Lesson_05/README.md
new file mode 100644
index 0000000..23130f4
--- /dev/null
+++ b/Lessons/Lesson_05/README.md
@@ -0,0 +1,53 @@
+To build modules in our package we've used something like this:
+```
+$ build --platform=UefiLessonsPkg/UefiLessonsPkg.dsc \
+        --module=UefiLessonsPkg/HelloWorld/HelloWorld.inf \
+        --arch=X64 \
+        --buildtarget=RELEASE \
+        --tagname=GCC5
+```
+
+This is kinda long string. Let's simplify it.
+
+First we can omit `module` option from the command and always compile our package entirely with all its modules:
+
+```
+$ build --platform=UefiLessonsPkg/UefiLessonsPkg.dsc \
+        --arch=X64 \
+        --buildtarget=RELEASE \
+        --tagname=GCC5
+```
+
+When we initiate our environment with:
+```
+. edk2setup.sh
+```
+`Conf` directory is created in the edk2 folder. This directory is populated with a bunch of files.
+Also the `CONF_PATH` environment variable is created which points to the newly created `Conf` folder.
+
+Right now we are interested in the `Conf/target.txt` file.
+By default it has many comments (lines that start with `#` symbol) and is prepopulated with these values:
+```
+ACTIVE_PLATFORM       = EmulatorPkg/EmulatorPkg.dsc
+TARGET                = DEBUG
+TARGET_ARCH           = IA32
+TOOL_CHAIN_CONF       = Conf/tools_def.txt
+TOOL_CHAIN_TAG        = VS2015x86
+BUILD_RULE_CONF = Conf/build_rule.txt
+```
+
+We can put all our build command options in this file to simplify our everyday life.
+```
+ACTIVE_PLATFORM       = UefiLessonsPkg/UefiLessonsPkg.dsc
+TARGET                = RELEASE
+TARGET_ARCH           = X64
+TOOL_CHAIN_CONF       = Conf/tools_def.txt
+TOOL_CHAIN_TAG        = GCC5
+BUILD_RULE_CONF = Conf/build_rule.txt
+```
+
+After that we could build our package with all its modules with the one single command:
+```
+build
+```
+
diff --git a/Lessons/Lesson_05/UefiLessonsPkg/HelloWorld/HelloWorld.c b/Lessons/Lesson_05/UefiLessonsPkg/HelloWorld/HelloWorld.c
new file mode 100644
index 0000000..1f05899
--- /dev/null
+++ b/Lessons/Lesson_05/UefiLessonsPkg/HelloWorld/HelloWorld.c
@@ -0,0 +1,15 @@
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+
+EFI_STATUS
+EFIAPI
+UefiMain (
+  IN EFI_HANDLE        ImageHandle,
+  IN EFI_SYSTEM_TABLE  *SystemTable
+  )
+{
+  SystemTable->ConOut->OutputString(SystemTable->ConOut, L"Hello World!\n");
+  gST->ConOut->OutputString(gST->ConOut, L"Hello again!\n");
+  Print(L"Bye!\n");
+  return EFI_SUCCESS;
+}
diff --git a/Lessons/Lesson_05/UefiLessonsPkg/HelloWorld/HelloWorld.inf b/Lessons/Lesson_05/UefiLessonsPkg/HelloWorld/HelloWorld.inf
new file mode 100644
index 0000000..d65ca2e
--- /dev/null
+++ b/Lessons/Lesson_05/UefiLessonsPkg/HelloWorld/HelloWorld.inf
@@ -0,0 +1,18 @@
+[Defines]
+  INF_VERSION                    = 1.25
+  BASE_NAME                      = HelloWorld
+  FILE_GUID                      = 2e55fa38-f148-42d3-af90-1be247323e30
+  MODULE_TYPE                    = UEFI_APPLICATION
+  VERSION_STRING                 = 1.0
+  ENTRY_POINT                    = UefiMain
+
+[Sources]
+  HelloWorld.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  UefiApplicationEntryPoint
+  UefiLib
+
diff --git a/Lessons/Lesson_05/UefiLessonsPkg/SimplestApp/SimplestApp.c b/Lessons/Lesson_05/UefiLessonsPkg/SimplestApp/SimplestApp.c
new file mode 100644
index 0000000..8bdf500
--- /dev/null
+++ b/Lessons/Lesson_05/UefiLessonsPkg/SimplestApp/SimplestApp.c
@@ -0,0 +1,10 @@
+EFI_STATUS
+EFIAPI
+UefiMain (
+  IN EFI_HANDLE        ImageHandle,
+  IN EFI_SYSTEM_TABLE  *SystemTable
+  )
+{
+  return EFI_SUCCESS;
+}
+
diff --git a/Lessons/Lesson_05/UefiLessonsPkg/SimplestApp/SimplestApp.inf b/Lessons/Lesson_05/UefiLessonsPkg/SimplestApp/SimplestApp.inf
new file mode 100644
index 0000000..7d4bae2
--- /dev/null
+++ b/Lessons/Lesson_05/UefiLessonsPkg/SimplestApp/SimplestApp.inf
@@ -0,0 +1,16 @@
+[Defines]
+  INF_VERSION                    = 1.25
+  BASE_NAME                      = SimplestApp
+  FILE_GUID                      = 4a298956-fbe0-47fb-ae3a-2d5a0a959a26
+  MODULE_TYPE                    = UEFI_APPLICATION
+  VERSION_STRING                 = 1.0
+  ENTRY_POINT                    = UefiMain
+
+[Sources]
+  SimplestApp.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  UefiApplicationEntryPoint
diff --git a/Lessons/Lesson_05/UefiLessonsPkg/UefiLessonsPkg.dsc b/Lessons/Lesson_05/UefiLessonsPkg/UefiLessonsPkg.dsc
new file mode 100644
index 0000000..0a2edbe
--- /dev/null
+++ b/Lessons/Lesson_05/UefiLessonsPkg/UefiLessonsPkg.dsc
@@ -0,0 +1,30 @@
+[Defines]
+  DSC_SPECIFICATION              = 0x0001001C
+  PLATFORM_GUID                  = 3db7270f-ffac-4139-90a4-0ae68f3f8167
+  PLATFORM_VERSION               = 0.01
+  PLATFORM_NAME                  = UefiLessonsPkg
+  SKUID_IDENTIFIER               = DEFAULT
+  SUPPORTED_ARCHITECTURES        = X64
+  BUILD_TARGETS                  = RELEASE
+
+
+[LibraryClasses]
+  UefiApplicationEntryPoint|MdePkg/Library/UefiApplicationEntryPoint/UefiApplicationEntryPoint.inf
+  UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
+  DebugLib|MdePkg/Library/UefiDebugLibConOut/UefiDebugLibConOut.inf
+  BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
+  PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+  BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
+  RegisterFilterLib|MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.inf
+  PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
+  DebugPrintErrorLevelLib|MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
+  UefiLib|MdePkg/Library/UefiLib/UefiLib.inf
+  MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
+  DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
+  UefiRuntimeServicesTableLib|MdePkg/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.inf
+
+[Components]
+  UefiLessonsPkg/SimplestApp/SimplestApp.inf
+  UefiLessonsPkg/HelloWorld/HelloWorld.inf
+
+