From 1140d32aaa16081c0a97b8876e5ecec9ba0bf553 Mon Sep 17 00:00:00 2001
From: equation314 <equation618@gmail.com>
Date: Fri, 26 Oct 2018 11:20:03 +0800
Subject: [PATCH] add arch=aarch64 & board=raspi3 to Makefile

---
 kernel/Cargo.toml           |  2 +
 kernel/Makefile             | 91 +++++++++++++++++++++----------------
 kernel/aarch64-blog_os.json | 29 ++++++++++++
 3 files changed, 84 insertions(+), 38 deletions(-)
 create mode 100644 kernel/aarch64-blog_os.json

diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index 0afa030..7bde15d 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -8,6 +8,8 @@ use_apic = []
 link_user_program = []
 no_bbl = []
 
+board_raspi3 = []
+
 [profile.dev]
 # MUST >= 1 : Enable RVO to avoid stack overflow
 # MUST <= 1 : Avoid double fault at -O2 T_T
diff --git a/kernel/Makefile b/kernel/Makefile
index 0053184..9f54a19 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -8,13 +8,16 @@
 # 	make clean					Clean
 #
 # Options:
-#   arch = x86_64 | riscv32
+#   arch = x86_64 | riscv32 | aarch64
 #   d    = int | in_asm | ...	QEMU debug info
 #   mode = debug | release
 #   LOG  = off | error | warn | info | debug | trace
-#   board 						Only available on riscv32, build without bbl, run on board
+#   board = fpga				Only available on riscv32, build without bbl, run on board
+#         | raspi3				Only available on aarch64, run on Raspberry Pi 3 Model B/B+
 
-arch ?= riscv32
+arch ?= aarch64
+board ?= raspi3
+prefix ?= $(arch)-none-elf
 mode ?= debug
 LOG  ?= debug
 
@@ -27,21 +30,41 @@ user_bin_path := ../user/target/$(arch)-ucore/debug
 user_bins := $(patsubst $(user_bin_path)/%.d, $(user_bin_path)/%, $(wildcard $(user_bin_path)/*.d))
 user_obj := build/$(arch)/user.o
 SFSIMG := ../user/ucore32.img
+
+### qemu options ###
 ifeq ($(arch), x86_64)
 qemu_opts := \
 	-drive format=raw,file=$(bootimage) \
 	-drive format=raw,file=$(SFSIMG),media=disk,cache=writeback \
 	-smp 4 \
 	-serial mon:stdio \
-	-device isa-debug-exit
+	-device isa-debug-exit \
+	-nographic
+else ifeq ($(arch), riscv32)
+qemu_opts := \
+	-machine virt \
+	-nographic \
+	-kernel $(bin)
+else ifeq ($(arch), aarch64)
+qemu_opts := \
+	-machine $(board) \
+	-serial null -serial mon:stdio \
+	-nographic \
+	-kernel $(bin)
 endif
-ifeq ($(arch), riscv32)
-qemu_opts := -machine virt -kernel $(bin) -nographic
+
+ifdef d
+qemu_opts := $(qemu_opts) -d $(d)
 endif
 
-ifdef board
+
+
+### build args ###
+ifeq ($(arch), riscv32)
+ifeq ($(board), fpga)
 features := $(features) no_bbl
 endif
+endif
 
 # Link user binaries at ../user
 ifdef link_user
@@ -49,37 +72,25 @@ features := $(features) link_user_program
 assembly_object_files := $(assembly_object_files) $(user_obj)
 endif
 
-ifdef d
-qemu_opts := $(qemu_opts) -d $(d)
-endif
-
+features := $(features) board_$(board)
 build_args := --target $(target).json --features "$(features)"
 
 ifeq ($(mode), release)
 build_args := $(build_args) --release
 endif
 
-ifeq ($(OS),Windows_NT)
-uname := Win32
-else
-uname := $(shell uname)
-endif
 
-ifeq ($(uname), Darwin)
-prefix := x86_64-elf-
-endif
-ifeq ($(arch), riscv32)
-prefix := riscv64-unknown-elf-
-endif
 
-ld := $(prefix)ld
-objdump := $(prefix)objdump
-cc := $(prefix)gcc
-as := $(prefix)as
+### prefix ###
+ld := $(prefix)-ld
+objdump := $(prefix)-objdump
+objcopy := $(prefix)-objcopy
+cc := $(prefix)-gcc
+as := $(prefix)-as
 
 .PHONY: all clean run build asm doc justrun kernel
 
-all: $(kernel)
+all: kernel
 
 clean:
 	@cargo clean
@@ -108,20 +119,24 @@ elf-h:
 	@$(objdump) -h $(kernel)
 
 $(bin): kernel
-ifdef board
+ifeq ($(arch), riscv32)
+ifeq ($(board), fpga)
 	@cp $(kernel) $@
 else
 	@cd ../riscv-pk && \
-	 mkdir -p build && \
-	 cd build && \
-	 ../configure \
-	 	--enable-32bit \
-	 	--enable-logo \
-	 	--disable-fp-emulation \
-	 	--host=riscv64-unknown-elf \
-	 	--with-payload=$(abspath $(kernel)) && \
-	 make && \
-	 cp bbl ../../kernel/$@
+	mkdir -p build && \
+	cd build && \
+	../configure \
+		--enable-32bit \
+		--enable-logo \
+		--disable-fp-emulation \
+		--host=riscv64-unknown-elf \
+		--with-payload=$(abspath $(kernel)) && \
+	make && \
+	cp bbl ../../kernel/$@
+endif
+else ifeq ($(arch), aarch64)
+	$(objcopy) $(kernel) -O binary $@
 endif
 
 kernel:
diff --git a/kernel/aarch64-blog_os.json b/kernel/aarch64-blog_os.json
new file mode 100644
index 0000000..048db11
--- /dev/null
+++ b/kernel/aarch64-blog_os.json
@@ -0,0 +1,29 @@
+{
+  "abi-blacklist": [
+    "stdcall",
+    "fastcall",
+    "vectorcall",
+    "thiscall",
+    "win64",
+    "sysv64"
+  ],
+  "arch": "aarch64",
+  "data-layout": "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128",
+  "executables": true,
+  "linker": "aarch64-none-elf-ld",
+  "linker-flavor": "ld",
+  "linker-is-gnu": true,
+  "llvm-target": "aarch64-unknown-none",
+  "no-compiler-rt": true,
+  "features": "+a53,+strict-align",
+  "max-atomic-width": 128,
+  "os": "none",
+  "panic": "abort",
+  "panic-strategy": "abort",
+  "position-independent-executables": true,
+  "target-c-int-width": "32",
+  "target-endian": "little",
+  "target-pointer-width": "64",
+  "target-family": "unix",
+  "disable-redzone": true
+}