BaseTools/Gcc ARM AARCH64: add support for building device tree binaries

While modern AARCH64 server systems use ACPI for describing the platform
topology to the OS, ARM systems and AARCH64 outside of the server space
mostly use device tree binaries, which are compiled from device tree
source files using the device tree compiler.

Currently, such source files and binaries may be kept in the EDK2 platform
trees, but are not integrated with the build, which means they need to be
kept in sync and recompiled manually, which is cumbersome.

So let's wire up BaseTools support for them: add tool definitions for the
DTC compiler and preprocessor flags that allow these source files to use
FixedPcd expressions and other macros defined by AutoGen.h

This way, a device tree binary can be built from source and emitted into
a FFS file automatically using something like:

  DeviceTree.inf:
    [Defines]
      INF_VERSION    = 0x00010019
      BASE_NAME      = SomePlatformDeviceTree
      FILE_GUID      = 25462CDA-221F-47DF-AC1D-259CFAA4E326 # gDtPlatformDefaultDtbFileGuid
      MODULE_TYPE    = USER_DEFINED
      VERSION_STRING = 1.0

    [Sources]
      SomePlatform.dts

    [Packages]
      MdePkg/MdePkg.dec

  SomePlatform.fdf:
    INF RuleOverride = DTB xxx/yyy/DeviceTree.inf

    [Rule.Common.USER_DEFINED.DTB]
      FILE FREEFORM = $(NAMED_GUID) {
        RAW BIN                |.dtb
      }

where it can be picked at runtime by the DTB loader that may refer to it
using gDtPlatformDefaultDtbFileGuid.

Note that this is very similar to how ACPI tables may be emitted into a
FFS file with a known GUID and picked up by AcpiTableDxe at runtime.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>

2 files changed, 33 insertions, 0 deletions

diff --git a/BaseTools/Conf/build_rule.template b/BaseTools/Conf/build_rule.template
index 1db94b696..2684c8c99 100755
--- a/BaseTools/Conf/build_rule.template
+++ b/BaseTools/Conf/build_rule.template
@@ -238,6 +238,20 @@
         # For RVCTCYGWIN ASM_FLAGS must be first to work around pathing issues

         "$(ASM)" $(ASM_FLAGS) -o ${dst} ${d_path}(+)${s_base}.iii

 

+[Device-Tree-Source-File]

+    <InputFile>

+        ?.dts

+

+    <ExtraDependency>

+        $(MAKE_FILE)

+

+    <OutputFile>

+        $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.dtb

+

+    <Command.GCC>

+        "$(PP)" $(DTCPP_FLAGS) $(INC) ${src} > ${d_path}(+)${s_base}.i

+        "$(DTC)" -I dts -O dtb -o ${dst} ${d_path}(+)${s_base}.i

+

 [Visual-Form-Representation-File]

     <InputFile>

         ?.vfr

diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template
index f7f7a515a..88e51dd39 100755
--- a/BaseTools/Conf/tools_def.template
+++ b/BaseTools/Conf/tools_def.template
@@ -227,6 +227,8 @@ DEFINE IPHONE_TOOLS            = /Developer/Platforms/iPhoneOS.platform/Develope
 

 DEFINE SOURCERY_CYGWIN_TOOLS = /cygdrive/c/Program Files/CodeSourcery/Sourcery G++ Lite/bin

 

+DEFINE DTC_BIN                 = ENV(DTC_PREFIX)dtc

+

 ####################################################################################

 #

 # format: TARGET_TOOLCHAIN_ARCH_COMMANDTYPE_ATTRIBUTE = <string>

@@ -4363,6 +4365,7 @@ DEFINE GCC_VFRPP_FLAGS             = -x c -E -P -DVFRCOMPILE --include $(DEST_DI
 DEFINE GCC_ASLPP_FLAGS             = -x c -E -include AutoGen.h

 DEFINE GCC_ASLCC_FLAGS             = -x c

 DEFINE GCC_WINDRES_FLAGS           = -J rc -O coff

+DEFINE GCC_DTCPP_FLAGS             = -E -x assembler-with-cpp -imacros $(DEST_DIR_DEBUG)/AutoGen.h -nostdinc

 DEFINE GCC_IA32_RC_FLAGS           = -I binary -O elf32-i386          -B i386    --rename-section .data=.hii

 DEFINE GCC_X64_RC_FLAGS            = -I binary -O elf64-x86-64        -B i386    --rename-section .data=.hii

 DEFINE GCC_IPF_RC_FLAGS            = -I binary -O elf64-ia64-little   -B ia64    --rename-section .data=.hii

@@ -4746,6 +4749,7 @@ RELEASE_GCC45_X64_CC_FLAGS       = DEF(GCC45_X64_CC_FLAGS) -Os
 *_GCC46_*_MAKE_PATH                    = DEF(GCC46_IA32_PREFIX)make

 *_GCC46_*_*_DLL                        = ENV(GCC46_DLL)

 *_GCC46_*_ASL_PATH                     = DEF(UNIX_IASL_BIN)

+*_GCC46_*_DTC_PATH                     = DEF(DTC_BIN)

 

 *_GCC46_*_PP_FLAGS                     = DEF(GCC_PP_FLAGS)

 *_GCC46_*_ASLPP_FLAGS                  = DEF(GCC_ASLPP_FLAGS)

@@ -4834,6 +4838,7 @@ RELEASE_GCC46_X64_CC_FLAGS       = DEF(GCC46_X64_CC_FLAGS) -Os -Wno-unused-but-s
 *_GCC46_ARM_ASM_FLAGS            = DEF(GCC46_ARM_ASM_FLAGS)

 *_GCC46_ARM_DLINK_FLAGS          = DEF(GCC46_ARM_DLINK_FLAGS)

 *_GCC46_ARM_DLINK2_FLAGS         = DEF(GCC46_ARM_DLINK2_FLAGS)

+*_GCC46_ARM_DTCPP_FLAGS          = DEF(GCC_DTCPP_FLAGS)

 *_GCC46_ARM_PLATFORM_FLAGS       = -march=armv7-a

 *_GCC46_ARM_PP_FLAGS             = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC46_ARM_RC_FLAGS             = DEF(GCC_ARM_RC_FLAGS)

@@ -4855,6 +4860,7 @@ RELEASE_GCC46_ARM_CC_FLAGS       = DEF(GCC46_ARM_CC_FLAGS) -Wno-unused-but-set-v
 *_GCC47_*_MAKE_PATH                    = DEF(GCC47_IA32_PREFIX)make

 *_GCC47_*_*_DLL                        = ENV(GCC47_DLL)

 *_GCC47_*_ASL_PATH                     = DEF(UNIX_IASL_BIN)

+*_GCC47_*_DTC_PATH                     = DEF(DTC_BIN)

 

 *_GCC47_*_PP_FLAGS                     = DEF(GCC_PP_FLAGS)

 *_GCC47_*_ASLPP_FLAGS                  = DEF(GCC_ASLPP_FLAGS)

@@ -4942,6 +4948,7 @@ RELEASE_GCC47_X64_CC_FLAGS       = DEF(GCC47_X64_CC_FLAGS) -Os -Wno-unused-but-s
 *_GCC47_ARM_ASM_FLAGS            = DEF(GCC47_ARM_ASM_FLAGS)

 *_GCC47_ARM_DLINK_FLAGS          = DEF(GCC47_ARM_DLINK_FLAGS)

 *_GCC47_ARM_DLINK2_FLAGS         = DEF(GCC47_ARM_DLINK2_FLAGS)

+*_GCC47_ARM_DTCPP_FLAGS          = DEF(GCC_DTCPP_FLAGS)

 *_GCC47_ARM_PLATFORM_FLAGS       = -march=armv7-a

 *_GCC47_ARM_PP_FLAGS             = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC47_ARM_RC_FLAGS             = DEF(GCC_ARM_RC_FLAGS)

@@ -4971,6 +4978,7 @@ RELEASE_GCC47_ARM_CC_FLAGS       = DEF(GCC47_ARM_CC_FLAGS) -Wno-unused-but-set-v
 *_GCC47_AARCH64_ASM_FLAGS        = DEF(GCC47_AARCH64_ASM_FLAGS)

 *_GCC47_AARCH64_DLINK_FLAGS      = DEF(GCC47_AARCH64_DLINK_FLAGS)

 *_GCC47_AARCH64_DLINK2_FLAGS     = DEF(GCC47_AARCH64_DLINK2_FLAGS)

+*_GCC47_AARCH64_DTCPP_FLAGS      = DEF(GCC_DTCPP_FLAGS)

 *_GCC47_AARCH64_PLATFORM_FLAGS   =

 *_GCC47_AARCH64_PP_FLAGS         = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC47_AARCH64_RC_FLAGS         = DEF(GCC_AARCH64_RC_FLAGS)

@@ -4992,6 +5000,7 @@ RELEASE_GCC47_AARCH64_CC_FLAGS   = DEF(GCC47_AARCH64_CC_FLAGS) -Wno-unused-but-s
 *_GCC48_*_MAKE_PATH                    = DEF(GCC48_IA32_PREFIX)make

 *_GCC48_*_*_DLL                        = ENV(GCC48_DLL)

 *_GCC48_*_ASL_PATH                     = DEF(UNIX_IASL_BIN)

+*_GCC48_*_DTC_PATH                     = DEF(DTC_BIN)

 

 *_GCC48_*_PP_FLAGS                     = DEF(GCC_PP_FLAGS)

 *_GCC48_*_ASLPP_FLAGS                  = DEF(GCC_ASLPP_FLAGS)

@@ -5079,6 +5088,7 @@ RELEASE_GCC48_X64_CC_FLAGS       = DEF(GCC48_X64_CC_FLAGS) -Os -Wno-unused-but-s
 *_GCC48_ARM_ASM_FLAGS            = DEF(GCC48_ARM_ASM_FLAGS)

 *_GCC48_ARM_DLINK_FLAGS          = DEF(GCC48_ARM_DLINK_FLAGS)

 *_GCC48_ARM_DLINK2_FLAGS         = DEF(GCC48_ARM_DLINK2_FLAGS)

+*_GCC48_ARM_DTCPP_FLAGS          = DEF(GCC_DTCPP_FLAGS)

 *_GCC48_ARM_PLATFORM_FLAGS       = -march=armv7-a

 *_GCC48_ARM_PP_FLAGS             = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC48_ARM_RC_FLAGS             = DEF(GCC_ARM_RC_FLAGS)

@@ -5108,6 +5118,7 @@ RELEASE_GCC48_ARM_CC_FLAGS       = DEF(GCC48_ARM_CC_FLAGS) -Wno-unused-but-set-v
 *_GCC48_AARCH64_ASM_FLAGS        = DEF(GCC48_AARCH64_ASM_FLAGS)

 *_GCC48_AARCH64_DLINK_FLAGS      = DEF(GCC48_AARCH64_DLINK_FLAGS)

 *_GCC48_AARCH64_DLINK2_FLAGS     = DEF(GCC48_AARCH64_DLINK2_FLAGS)

+*_GCC48_AARCH64_DTCPP_FLAGS      = DEF(GCC_DTCPP_FLAGS)

 *_GCC48_AARCH64_PLATFORM_FLAGS   =

 *_GCC48_AARCH64_PP_FLAGS         = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC48_AARCH64_RC_FLAGS         = DEF(GCC_AARCH64_RC_FLAGS)

@@ -5129,6 +5140,7 @@ RELEASE_GCC48_AARCH64_CC_FLAGS   = DEF(GCC48_AARCH64_CC_FLAGS) -Wno-unused-but-s
 *_GCC49_*_MAKE_PATH                    = DEF(GCC49_IA32_PREFIX)make

 *_GCC49_*_*_DLL                        = ENV(GCC49_DLL)

 *_GCC49_*_ASL_PATH                     = DEF(UNIX_IASL_BIN)

+*_GCC49_*_DTC_PATH                     = DEF(DTC_BIN)

 

 *_GCC49_*_PP_FLAGS                     = DEF(GCC_PP_FLAGS)

 *_GCC49_*_ASLPP_FLAGS                  = DEF(GCC_ASLPP_FLAGS)

@@ -5216,6 +5228,7 @@ RELEASE_GCC49_X64_CC_FLAGS       = DEF(GCC49_X64_CC_FLAGS) -Os -Wno-unused-but-s
 *_GCC49_ARM_ASM_FLAGS            = DEF(GCC49_ARM_ASM_FLAGS)

 *_GCC49_ARM_DLINK_FLAGS          = DEF(GCC49_ARM_DLINK_FLAGS)

 *_GCC49_ARM_DLINK2_FLAGS         = DEF(GCC49_ARM_DLINK2_FLAGS)

+*_GCC49_ARM_DTCPP_FLAGS          = DEF(GCC_DTCPP_FLAGS)

 *_GCC49_ARM_PLATFORM_FLAGS       = -march=armv7-a

 *_GCC49_ARM_PP_FLAGS             = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC49_ARM_RC_FLAGS             = DEF(GCC_ARM_RC_FLAGS)

@@ -5244,6 +5257,7 @@ RELEASE_GCC49_ARM_CC_FLAGS       = DEF(GCC49_ARM_CC_FLAGS) -Wno-unused-but-set-v
 *_GCC49_AARCH64_ASLDLINK_FLAGS   = DEF(GCC49_AARCH64_ASLDLINK_FLAGS)

 *_GCC49_AARCH64_ASM_FLAGS        = DEF(GCC49_AARCH64_ASM_FLAGS)

 *_GCC49_AARCH64_DLINK2_FLAGS     = DEF(GCC49_AARCH64_DLINK2_FLAGS)

+*_GCC49_AARCH64_DTCPP_FLAGS      = DEF(GCC_DTCPP_FLAGS)

 *_GCC49_AARCH64_PLATFORM_FLAGS   =

 *_GCC49_AARCH64_PP_FLAGS         = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC49_AARCH64_RC_FLAGS         = DEF(GCC_AARCH64_RC_FLAGS)

@@ -5272,6 +5286,7 @@ RELEASE_GCC49_AARCH64_DLINK_FLAGS  = DEF(GCC49_AARCH64_DLINK_FLAGS)
 *_GCC5_*_MAKE_PATH               = DEF(GCC5_IA32_PREFIX)make

 *_GCC5_*_*_DLL                   = ENV(GCC5_DLL)

 *_GCC5_*_ASL_PATH                = DEF(UNIX_IASL_BIN)

+*_GCC5_*_DTC_PATH                = DEF(DTC_BIN)

 

 *_GCC5_*_PP_FLAGS                = DEF(GCC_PP_FLAGS)

 *_GCC5_*_ASLPP_FLAGS             = DEF(GCC_ASLPP_FLAGS)

@@ -5364,6 +5379,7 @@ RELEASE_GCC5_X64_DLINK_FLAGS     = DEF(GCC5_X64_DLINK_FLAGS) -flto -Os
 *_GCC5_ARM_ASLDLINK_FLAGS        = DEF(GCC5_ARM_ASLDLINK_FLAGS)

 *_GCC5_ARM_ASM_FLAGS             = DEF(GCC5_ARM_ASM_FLAGS)

 *_GCC5_ARM_DLINK2_FLAGS          = DEF(GCC5_ARM_DLINK2_FLAGS)

+*_GCC5_ARM_DTCPP_FLAGS           = DEF(GCC_DTCPP_FLAGS)

 *_GCC5_ARM_PLATFORM_FLAGS        = -march=armv7-a

 *_GCC5_ARM_PP_FLAGS              = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC5_ARM_RC_FLAGS              = DEF(GCC_ARM_RC_FLAGS)

@@ -5397,6 +5413,7 @@ RELEASE_GCC5_ARM_DLINK_FLAGS     = DEF(GCC5_ARM_DLINK_FLAGS) -flto -Os -L$(WORKS
 *_GCC5_AARCH64_ASLDLINK_FLAGS    = DEF(GCC5_AARCH64_ASLDLINK_FLAGS)

 *_GCC5_AARCH64_ASM_FLAGS         = DEF(GCC5_AARCH64_ASM_FLAGS)

 *_GCC5_AARCH64_DLINK2_FLAGS      = DEF(GCC5_AARCH64_DLINK2_FLAGS)

+*_GCC5_AARCH64_DTCPP_FLAGS       = DEF(GCC_DTCPP_FLAGS)

 *_GCC5_AARCH64_PLATFORM_FLAGS    =

 *_GCC5_AARCH64_PP_FLAGS          = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)

 *_GCC5_AARCH64_RC_FLAGS          = DEF(GCC_AARCH64_RC_FLAGS)

@@ -5426,12 +5443,14 @@ RELEASE_GCC5_AARCH64_DLINK_FLAGS = DEF(GCC5_AARCH64_DLINK_FLAGS) -flto -Os -L$(W
 *_CLANG35_*_MAKE_PATH            = make

 *_CLANG35_*_*_DLL                = ENV(CLANG35_DLL)

 *_CLANG35_*_ASL_PATH             = DEF(UNIX_IASL_BIN)

+*_CLANG35_*_DTC_PATH             = DEF(DTC_BIN)

 

 *_CLANG35_*_PP_FLAGS             = DEF(GCC_PP_FLAGS)

 *_CLANG35_*_ASLCC_FLAGS          = DEF(GCC_ASLCC_FLAGS)

 *_CLANG35_*_APP_FLAGS            =

 *_CLANG35_*_ASL_FLAGS            = DEF(IASL_FLAGS)

 *_CLANG35_*_ASL_OUTFLAGS         = DEF(IASL_OUTFLAGS)

+*_CLANG35_*_DTCPP_FLAGS          = DEF(GCC_DTCPP_FLAGS)

 

 *_CLANG35_*_CC_PATH              = ENV(CLANG35_BIN)clang

 *_CLANG35_*_ASM_PATH             = ENV(CLANG35_BIN)clang