1import os
2import re
3
4# toolchains options
5ARCH        ='risc-v'
6VENDOR      ='t-head'
7CPU         ='c908'
8CROSS_TOOL  ='gcc'
9
10RTT_ROOT = os.getenv('RTT_ROOT', r'../..')
11
12if os.getenv('RTT_CC'):
13    CROSS_TOOL = os.getenv('RTT_CC')
14
15if  CROSS_TOOL == 'gcc':
16    PLATFORM    = 'gcc'
17    EXEC_PATH   = r'/opt/toolchain/riscv64-linux-musleabi_for_x86_64-pc-linux-gnu_rtt/bin'
18else:
19    print('Please make sure your toolchains is GNU GCC!')
20    exit(0)
21
22if os.getenv('RTT_EXEC_PATH'):
23    EXEC_PATH = os.getenv('RTT_EXEC_PATH')
24
25if re.match("-DDBGLV=0", os.getenv('KCFLAGS', '-DDBGLV=0')):
26    BUILD = 'release'
27else:
28    BUILD = 'debug'
29
30if PLATFORM == 'gcc':
31    # toolchains
32    #PREFIX  = 'riscv64-unknown-elf-'
33    PREFIX  = os.getenv('RTT_CC_PREFIX') or 'riscv64-unknown-linux-musl-'
34    CC      = PREFIX + 'gcc'
35    CXX     = PREFIX + 'g++'
36    AS      = PREFIX + 'gcc'
37    AR      = PREFIX + 'ar'
38    LINK    = PREFIX + 'gcc'
39    TARGET_EXT = 'elf'
40    SIZE    = PREFIX + 'size'
41    OBJDUMP = PREFIX + 'objdump'
42    OBJCPY  = PREFIX + 'objcopy'
43
44    DEVICE  = ' -mcmodel=medany -march=rv64imafdcv -mabi=lp64d'
45    CFLAGS  = DEVICE + ' -Wno-cpp -fvar-tracking -ffreestanding -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -D_POSIX_SOURCE '
46    AFLAGS  = ' -c' + DEVICE + ' -x assembler-with-cpp -D__ASSEMBLY__'
47    LFLAGS  = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T link.lds.generated' + ' -lsupc++ -lgcc -static'
48    CPATH   = ''
49    LPATH   = ''
50
51    if BUILD == 'debug':
52        CFLAGS += ' -O0 -gdwarf-2'
53        AFLAGS += ' -gdwarf-2'
54    else:
55        CFLAGS += ' -O2 -g -gdwarf-2'
56    CFLAGS += ' ' +  os.getenv('KCFLAGS', '-DDBGLV=0')
57
58    CXXFLAGS = CFLAGS
59
60POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
61