1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
# Kernel Sources/Objects
C_SOURCEK = $(wildcard kernel/*.c kernel/**/*.c)
C_OBJECTk = ${C_SOURCEK:.c=.co}
C_OBJECTK = ${subst kernel/,obj/kernel/,${C_OBJECTk}}
A_SOURCEK = $(wildcard kernel/*.S kernel/**/*.S)
A_OBJECTk = ${A_SOURCEK:.S=.ao}
A_OBJECTK = ${subst kernel/,obj/kernel/,${A_OBJECTk}}
# User Sources/Objects
C_SOURCEU = $(wildcard usr/*.c usr/**/*.c)
C_OBJECTu = ${C_SOURCEU:.c=.co}
C_OBJECTU = ${subst usr/,obj/usr/,${C_OBJECTu}}
A_SOURCEU = $(wildcard usr/*.S usr/**/*.S)
A_OBJECTu = ${A_SOURCEU:.S=.ao}
A_OBJECTU = ${subst usr/,obj/usr/,${A_OBJECTu}}
# Combined Objects
C_OBJECTD = $(C_OBJECTK) $(C_OBJECTU)
A_OBJECTD = $(A_OBJECTK) $(A_OBJECTU)
ATTACH_USB ?= 0
AUTO ?= 0
BSP ?= 2
GDEBUG ?= 0
DEBUG ?= 0
SILENT ?= 0
DISK ?= /dev/sdc1
CROSS = arm-none-eabi
CC = ${CROSS}-gcc
AS = ${CROSS}-as
OBJCOPY = ${CROSS}-objcopy
OBJDUMP = ${CROSS}-objdump
QEMU = qemu-system-arm
GDB = gdb-multiarch
CFLAGS = -mcpu=cortex-a7 -fpic -ffreestanding -std=gnu99 -O3 -Wall -Wextra -nostdlib -Iinclude -g
CFLAGS += -DVERSION="\"0.9z\""
AFLAGS = -mcpu=cortex-a7 -Iinclude -g
QFLAGS = -M raspi2b -cpu cortex-a7 -m 1G
# Attach USB if requested
ifneq ("$(ATTACH_USB)","0")
QFLAGS += -device usb-kbd
QFLAGS += -trace events=events
endif
# Use Automation Pipe if requested
ifneq ("$(AUTO)","0")
QFLAGS += -chardev pipe,id=char0,mux=on,logfile=serial.log,path=guest -serial chardev:char0 -mon chardev=char0
else
QFLAGS += -chardev stdio,id=char0,mux=on,logfile=serial.log,signal=off -serial chardev:char0 -mon chardev=char0
endif
# Use Correct MMIO Address
ifeq ($(BSP),2)
BSP23 = 1
CFLAGS += -DBSP23
endif
# Pause and wait for GDB if requested
ifneq ($(GDEBUG),0)
QFLAGS += -s -S
endif
# Debugging Flag
ifneq ($(DEBUG),0)
CFLAGS += -DDEBUG
endif
# Don't use screen if requested
ifneq ("$(SILENT)","0")
QFLAGS += -nographic
endif
# Attach sd if exists
ifneq ("$(wildcard ./sd.hda)","")
QFLAGS += -drive file=sd.hda,if=sd,format=raw
endif
.PHONY: clean debug disk dump run test tree
default: clean build/kernel7.img
build/kernel7.img: CFLAGS += -DRPI_BUILD
build/kernel7.img: build/kernel.elf
@mkdir -p $(@D)
${OBJCOPY} $< -O binary $@
build/kernel.list: build/kernel.elf
@mkdir -p $(@D)
${OBJDUMP} -D $< > $@
dump: build/kernel.list
build/kernel.elf: ${A_OBJECTD} ${C_OBJECTD}
@tput setaf 6 2> /dev/null || true; echo Linking Kernel; tput sgr0 2> /dev/null || true
@mkdir -p $(@D)
@echo ${C_SOURCEK}
${CC} -T linker.ld -o $@ -ffreestanding -O3 -nostdlib $^
obj/kernel/%.co: kernel/%.c
@mkdir -p $(@D)
${CC} ${CFLAGS} -c $< -o $@
obj/kernel/%.ao: kernel/%.S
@mkdir -p $(@D)
${AS} ${AFLAGS} -c $< -o $@
obj/usr/%.co: usr/%.c
@mkdir -p $(@D)
${CC} ${CFLAGS} -c $< -o $@
obj/usr/%.ao: usr/%.S
@mkdir -p $(@D)
${AS} ${AFLAGS} -c $< -o $@
run: build/kernel.elf
@tput setaf 6 2> /dev/null || true; echo Starting QEMU; tput sgr0 2> /dev/null || true
@${QEMU} -kernel $< ${QFLAGS}
debug: build/kernel.list
@tput setaf 6 2> /dev/null || true; echo Starting GDB; tput sgr0 2> /dev/null || true
@${GDB} $< -command=gdbinit
sd.hda:
@cp README.md sd.hda
@dd if=/dev/zero of=sd.hda count=1 bs=1 seek=16383
disk: sd.hda
clean:
@tput setaf 6 2> /dev/null || true; echo Clearing Build; tput sgr0 2> /dev/null || true
rm -rf obj/* build/*
tree:
@tree -a -I obj\|build\|.git\|.gitignore
test: clean build/kernel.elf
@tput setaf 6 2> /dev/null || true; echo Running Tests; tput sgr0 2> /dev/null || true
@./tests/run.sh
copy: clean build/kernel7.img
sudo mount -o umask=0 $(DISK) /mnt/sd0
sudo cp build/kernel7.img /mnt/sd0
sudo umount /mnt/sd0
|
