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1 UNAME := $(shell uname -m)
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2
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3 ifeq ($(UNAME), x86_64)
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4 # set FVP as default on x86_64 systems
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5 hw?=rpi2
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6 TOOLCHAIN?=~/gcc-arm-none-eabi-5_4-2016q3/bin/arm-none-eabi-
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7 else
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8 # RPI reports 'uname -m' as: armv7l
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9 hw?=rpi2
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10 endif
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11
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12 # PHYSTART : start of memory (RAM)
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13 # PHYSIZE : size of memory
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14 # KERNBASE : address of high memory schema
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15 # MMIO_PA : physical address of peripherals (MMIO)
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16 # MMIO_VA : virtal address of peripherals
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17 # MMIO_SIZE : size of peripherals
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18 # PERIPHBASE: virtal address of PERIPHBASE[39:15]
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19
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20 ifeq ($(hw), fvp)
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21 PHYSTART = 0x80000000
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22 PHYSIZE = 0x08000000
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23 KERNBASE = 0xC0000000
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24 MMIO_PA = 0x1C000000
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25 MMIO_VA = 0xD0000000
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26 MMIO_SIZE = 0x04000000
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27 PERIPHBASE= 0xDF000000
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28 CFLAGS = -ffreestanding -nostdlib -nostartfiles -O0 -Wall -MD -ggdb -Wall -mcpu=cortex-a9 -mfloat-abi=hard -fno-short-enums -I include
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29 #CFLAGS = -ffreestanding -nostdlib -nostartfiles -O2 -Wall -MD -ggdb -Wall -mcpu=cortex-a9 -mfloat-abi=hard -fno-short-enums -I include
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30 TARGET = fvp.img
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31 CC_OPTIONS = -DFVP
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32 else ifeq ($(hw), rpi1)
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33 PHYSTART = 0x00000000
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34 # PHYSIZE set to 128mb
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35 PHYSIZE = 0x08000000
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36 KERNBASE = 0x80000000
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37 MMIO_PA = 0x20000000
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38 MMIO_VA = 0xD0000000
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39 MMIO_SIZE = 0x01000000
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40 PERIPHBASE= 0xDF000000
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41 #CFLAGS = -fno-pic -static -Wno-packed-bitfield-compat -fno-builtin -fno-strict-aliasing -fshort-wchar -O2 -Wall -MD -ggdb -Werror -fno-omit-frame-pointer -fno-stack-protector -Wa,-march=armv6 -Wa,-mcpu=arm1176jzf-s -mfloat-abi=hard -fno-short-enums -I include
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42 CFLAGS = -ffreestanding -nostdlib -nostartfiles -O2 -Wall -MD -ggdb -Wall -mcpu=arm1176jzf-s -mfloat-abi=hard -fno-short-enums -I include
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43 TARGET = kernel.img
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44 CC_OPTIONS = -DRPI1
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45 else ifeq ($(hw), rpi2)
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46 PHYSTART = 0x00000000
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47 # PHYSIZE set to 256mb
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48 PHYSIZE = 0x10000000
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49 KERNBASE = 0x80000000
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50 MMIO_PA = 0x3F000000
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51 MMIO_VA = 0xD0000000
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52 MMIO_SIZE = 0x01000000
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53 PERIPHBASE= 0xDF000000
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54 CFLAGS = -ffreestanding -nostdlib -nostartfiles -O2 -Wall -MD -ggdb -Wall -mcpu=cortex-a7 -mfloat-abi=hard -fno-short-enums -I include
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55 TARGET = kernel7.bin
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56 CC_OPTIONS = -DRPI2
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57 else
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58 $(error Hardware (hw) should be fvp, rpi1 or rpi2, eg. make hw=rpi2)
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59 endif
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60
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61
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62 K_PDX_BASE=$(shell printf "0x%X\n" $$(( $(PHYSTART) + 0x4000 )) )
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63 K_PTX_BASE=$(shell printf "0x%X\n" $$(( $(PHYSTART) + 0x3000 )) )
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64 OFFSET=0x8000
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65 PHYSOFFSET=$(shell printf "0x%X\n" $$(( $(PHYSTART) + $(OFFSET) )) )
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66 KERNOFFSET=$(shell printf "0x%X\n" $$(( $(KERNBASE) + $(OFFSET) )) )
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67
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68 CC_OPTIONS += -DPHYSTART=$(PHYSTART) -DPHYSIZE=$(PHYSIZE) -DKERNBASE=$(KERNBASE) -DMMIO_PA=$(MMIO_PA) -DMMIO_VA=$(MMIO_VA) -DMMIO_SIZE=$(MMIO_SIZE) -DPERIPHBASE=$(PERIPHBASE)
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69 CC_OPTIONS += -DK_PDX_BASE=$(K_PDX_BASE) -DK_PTX_BASE=$(K_PTX_BASE) -DPHYSOFFSET=$(PHYSOFFSET) -DKERNOFFSET=$(KERNOFFSET)
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70
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71 LD_OPTIONS = --defsym=PHYSTART=$(PHYSTART) --defsym=PHYSIZE=$(PHYSIZE) --defsym=KERNBASE=$(KERNBASE) --defsym=MMIO_PA=$(MMIO_PA) --defsym=MMIO_VA=$(MMIO_VA) --defsym=MMIO_SIZE=$(MMIO_SIZE) --defsym=PERIPHBASE=$(PERIPHBASE)
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72 LD_OPTIONS += --defsym=K_PDX_BASE=$(K_PDX_BASE) --defsym=K_PTX_BASE=$(K_PTX_BASE) --defsym=PHYSOFFSET=$(PHYSOFFSET) --defsym=KERNOFFSET=$(KERNOFFSET)
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73
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74 # Build directory
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75 BUILD=build/
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76 # Sources directory.
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77 SOURCE=source/
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78 # Generated listing file.
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79 LIBRARIES=
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80
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81 # The names of all object files that must be generated. Deduced from the
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82 # assembly code files in source.
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83 ASM_OBJECTS = $(patsubst $(SOURCE)%.S,$(BUILD)%.o,$(wildcard $(SOURCE)*.S))
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84
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85 C_OBJECTS = $(patsubst $(SOURCE)%.c,$(BUILD)%.o,$(wildcard $(SOURCE)*.c))
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86
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87 # Rule to make everything.
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88 all : $(TARGET)
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89
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90 # Rule to make the elf file.
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91 $(TARGET): $(ASM_OBJECTS) $(C_OBJECTS) kernel.ld
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92 $(TOOLCHAIN)ld $(ASM_OBJECTS) $(C_OBJECTS) -L. $(patsubst %,-l %,$(LIBRARIES)) $(LD_OPTIONS) -Map kernel.map -o $(BUILD)kernel.elf -T kernel.ld
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93 $(TOOLCHAIN)objdump -d $(BUILD)kernel.elf > kernel.list
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94 $(TOOLCHAIN)objcopy $(BUILD)kernel.elf -O binary $(TARGET)
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95
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96 # Build ASM files
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97 $(BUILD)%.o: $(SOURCE)%.S $(BUILD)
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98 $(TOOLCHAIN)gcc -c $(CFLAGS) $(CC_OPTIONS) -I source $< -o $@
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99
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100 # Build C files
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101 $(BUILD)%.o: $(SOURCE)%.c $(BUILD)
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102 $(TOOLCHAIN)gcc -c $(CFLAGS) $(CC_OPTIONS) $< -o $@
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103
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104 loader: loader.S kernel7.bin
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105 $(TOOLCHAIN)gcc -c loader.S -o loader.elf -fpic -ffreestanding -nostdlib -nostartfiles -O0 -Wall -ggdb -Wall -mcpu=cortex-a7 -mfloat-abi=hard -fno-short-enums -o loader.o
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106 $(TOOLCHAIN)ld loader.o -o loader.elf -T loader.ld
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107 #$(TOOLCHAIN)objdump -D loader.elf > loader.list
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108 $(TOOLCHAIN)objcopy loader.elf -O binary kernel7.img
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109 -rm loader.elf loader.o
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110
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111 $(BUILD):
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112 mkdir $@
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113
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114 .PHONY: report
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115 report:
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116 @echo 'Hardware :' $(hw)
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117 @echo 'TARGET :' $(TARGET)
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118 @echo 'PHYSTART :' $(PHYSTART)
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119 @echo 'PHYSIZE :' $(PHYSIZE)
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120
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121 @echo 'K_PDX_BASE:' $(K_PDX_BASE)
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122 @echo 'K_PTX_BASE:' $(K_PTX_BASE)
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123 @echo 'PHYSOFFSET:' $(PHYSOFFSET)
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124
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125 @echo 'KERNBASE :' $(KERNBASE)
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126 @echo 'KERNOFFSET:' $(KERNOFFSET)
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127
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128 @echo 'MMIO_PA :' $(MMIO_PA)
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129 @echo 'MMIO_SIZE :' $(MMIO_SIZE)
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130 @echo 'MMIO_VA :' $(MMIO_VA)
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131 @echo 'PERIPHBASE:' $(PERIPHBASE)
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132
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133 @echo 'CFLAGS :' $(CFLAGS)
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134 @echo 'CC_OPTIONS:' $(CC_OPTIONS)
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135 @echo 'LD_OPTIONS:' $(LD_OPTIONS)
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136
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137 .PHONY: install
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138 install:
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139 cp kernel*.img /media/$(USER)/boot/
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140 sync
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141 umount /media/$(USER)/*
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142
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143 # Rule to clean files.
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144 clean :
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145 -rm -rf $(BUILD)
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146 -rm -f *.img
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147 -rm -f *.bin
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148 -rm -f kernel.list
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149 -rm -f kernel.map
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