1import os
2
3# toolchains options
4ARCH        ='risc-v'
5VENDOR      ='t-head'
6CPU         ='c906'
7CROSS_TOOL  ='gcc'
8
9RTT_ROOT = os.getenv('RTT_ROOT') or os.path.join(os.getcwd(),'..','..','..')
10
11if os.getenv('RTT_CC'):
12    CROSS_TOOL = os.getenv('RTT_CC')
13
14if  CROSS_TOOL == 'gcc':
15    PLATFORM    = 'gcc'
16    EXEC_PATH   = r'/opt/riscv64_musl/bin'
17else:
18    print('Please make sure your toolchains is GNU GCC!')
19    exit(0)
20
21if os.getenv('RTT_EXEC_PATH'):
22    EXEC_PATH = os.getenv('RTT_EXEC_PATH')
23
24BUILD = 'debug'
25
26if PLATFORM == 'gcc':
27    # toolchains
28    #PREFIX  = 'riscv64-unknown-elf-'
29    PREFIX  = os.getenv('RTT_CC_PREFIX') or 'riscv64-unknown-linux-musl-'
30    CC      = PREFIX + 'gcc'
31    CXX     = PREFIX + 'g++'
32    AS      = PREFIX + 'gcc'
33    AR      = PREFIX + 'ar'
34    LINK    = PREFIX + 'gcc'
35    TARGET_EXT = 'elf'
36    SIZE    = PREFIX + 'size'
37    OBJDUMP = PREFIX + 'objdump'
38    OBJCPY  = PREFIX + 'objcopy'
39
40    DEVICE  = ' -mcmodel=medany -march=rv64imafdc -mabi=lp64'
41    CFLAGS  = DEVICE + ' -fvar-tracking -ffreestanding -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields '
42    AFLAGS  = ' -c' + DEVICE + ' -x assembler-with-cpp'
43    LFLAGS  = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T link.lds' + ' -lsupc++ -lgcc -static'
44    CPATH   = ''
45    LPATH   = ''
46
47    if BUILD == 'debug':
48        CFLAGS += ' -O0 -ggdb'
49        AFLAGS += ' -ggdb'
50    else:
51        CFLAGS += ' -O2 -Os'
52
53    CXXFLAGS = CFLAGS
54
55DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtthread.asm\n'
56POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
57