def load_elf(soc, elffile, imemory, dmemory):
DATA_SECTIONS = [".data", ".sdata", ".rodata", ".srodata"]
e = elf.ELFObject()
f = open(elffile)
e.fromFile(f)
offset = 0
if e.e_machine != 0xf3:
raise TypeError, "This is not a RISCV32 executable: %x" % (e.e_machine)
for p in e.sections:
if p.sh_flags & (elf.ELFSection.SHF_WRITE
| elf.ELFSection.SHF_EXECINSTR
| elf.ELFSection.SHF_ALLOC):
if p.name[:5] == ".text" or p.name == ".init":
# print "Writing program '%s' at %08x, len: %d" % (p.name, p.sh_addr, len(p.data))
write_imem(soc, imemory, p.data, p.sh_addr)
elif p.name in DATA_SECTIONS:
# print "Writing data '%s' at %08x, len: %d" % (p.name, p.sh_addr, len(p.data))
write_dmem(soc, dmemory, p.data, p.sh_addr)
else:
print "Dropping '%s' at %08x, len: %d" % (p.name, p.sh_addr,
len(p.data))
return e.parseSymbols()
def main(argv):
# Collect arguments
if len(sys.argv) != 4:
print 'usage: create_fl_image.py <elffile> <binfile> <cfile>'
sys.exit(2)
elfFilename = argv[0]
binFilename = argv[1]
cFilename = argv[2]
# Open files
try:
binFile = open(binFilename, 'rb')
except IOError:
print 'cannot open file %s' % binFilename
sys.exit(2)
try:
cFile = open(cFilename, 'w')
except IOError:
print 'cannot open file %s' % cFilename
sys.exit(2)
elfData = elf.ELFObject()
try:
with open(elfFilename, 'rb') as elfFile:
elfData.fromFile(elfFile)
if elfData.e_type != elf.ELFObject.ET_EXEC:
raise Exception("No executable")
resetHandler = elfData.getSymbol("Reset_Handler")
vectors = elfData.getSymbol("__isr_vector")
stack = elfData.getSymbol("__StackTop")
except:
print 'cannot process file %s' % elfFilename
sys.exit(2)
# Print header
print >> cFile, '/* Created by create_fl_image.py, do not edit */\n'
print >> cFile, '#include "bootloader_common.h"\n'
print >> cFile, 'const uint8_t g_flashloaderImage[] = {'
# Print byte data
totalBytes = 0
while True:
data = binFile.read(16)
dataLen = len(data)
if dataLen == 0: break
totalBytes += dataLen
cFile.write(' ')
for i in range(dataLen):
cFile.write('0x%02x, ' % ord(data[i]))
print >> cFile
print >> cFile, '};\n'
# Print size and other info
cFile.write('const uint32_t g_flashloaderSize = %dU;\n' % totalBytes)
cFile.write('const uint32_t g_flashloaderBase = 0x%x;\n' %
vectors.st_value)
cFile.write('const uint32_t g_flashloaderEntry = 0x%x;\n' %
resetHandler.st_value)
cFile.write('const uint32_t g_flashloaderStack = 0x%x;\n' % stack.st_value)
def loadELF(self, file):
"""load data from a (opened) file in ELF object format.
File must be seekable"""
obj = elf.ELFObject()
obj.fromFile(file)
if obj.e_type != elf.ELFObject.ET_EXEC:
raise Exception("No executable")
for section in obj.getSections():
if DEBUG:
sys.stderr.write("ELF section %s at 0x%04x %d bytes\n" % (section.name, section.lma, len(section.data)))
if len(section.data):
self.segments.append( Segment(section.lma, section.data) )
def loadELF(self, file):
"""load data from a (opened) file in ELF object format.
File must be seekable"""
obj = elf.ELFObject()
obj.fromFile(file)
if obj.e_type != elf.ELFObject.ET_EXEC:
raise Exception("No executable")
data_size = 0
for section in obj.getSections():
data_size += len(section.data)
if options.debug:
sys.stderr.write(
"+- ELF section %s at 0x%04x %d bytes\n" %
(section.name, section.lma, len(section.data)))
if len(section.data):
self.segments.append(Segment(section.lma, section.data))
data_perc = float(data_size / 32000)
sys.stderr.write("+- Firmware: %d/32000 bytes.\n" % data_size)
def open_elf(infile): e = elf.ELFObject() f = open(infile) e.fromFile(f) f.close() return e
