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foboot-bitstream: generate multiboot and print helpful message

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Generate a multiboot version of the bitstream image.  While we're at it,
print a helpful message indicating what each output image is.

Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross
2019-04-06 11:06:34 +08:00
parent 4b6ad47705
commit 7ee97214e6
1 changed files with 26 additions and 5 deletions
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31
hw/foboot-bitstream.py
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@@ -547,8 +547,9 @@ class BaseSoC(SoCCore):
elif boot_source == "bios":
kwargs['cpu_reset_address']=0
if bios_file is None:
bios_size = 0x2000
self.add_memory_region("rom", kwargs['cpu_reset_address'], bios_size)
self.integrated_rom_size = bios_size = 0x2000
self.submodules.rom = wishbone.SRAM(bios_size, read_only=True, init=[])
self.register_rom(self.rom.bus, bios_size)
else:
bios_size = 0x2000
self.submodules.firmware_rom = FirmwareROM(bios_size, bios_file)
@@ -649,11 +650,10 @@ def make_multiboot_header(filename, boot_offsets=[160]):
output.write(bytes([0]))
def main():
make_multiboot_header("build/gateware/multiboot.bin", [160, 262144])
parser = argparse.ArgumentParser(
description="Build Fomu Main Gateware")
parser.add_argument(
"--boot-source", choices=["spi", "rand", "bios"], default="rand",
"--boot-source", choices=["spi", "rand", "bios"], default="bios",
help="where to have the CPU obtain its executable code from"
)
parser.add_argument(
@@ -674,6 +674,10 @@ def main():
)
args = parser.parse_args()
output_dir = 'build'
make_multiboot_header(os.path.join(output_dir, "gateware", "multiboot-header.bin"), [160, 262144])
if args.export_random_rom_file is not None:
size = 0x2000
def xorshift32(x):
@@ -711,7 +715,7 @@ def main():
soc = BaseSoC(platform, cpu_type="vexriscv", cpu_variant=cpu_variant,
debug=debug, boot_source=args.boot_source,
bios_file=args.bios, use_pll=args.no_pll)
builder = Builder(soc, output_dir="build", csr_csv="test/csr.csv", compile_software=compile_software)
builder = Builder(soc, output_dir=output_dir, csr_csv="test/csr.csv", compile_software=compile_software)
if compile_software:
builder.software_packages = [
("bios", os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "sw")))
@@ -719,5 +723,22 @@ def main():
vns = builder.build()
soc.do_exit(vns)
with open(os.path.join(output_dir, 'gateware', 'multiboot-header.bin'), 'rb') as multiboot_header_file:
multiboot_header = multiboot_header_file.read()
with open(os.path.join(output_dir, 'gateware', 'top.bin'), 'rb') as top_file:
top = top_file.read()
with open(os.path.join(output_dir, 'gateware', 'top-multiboot.bin'), 'wb') as top_multiboot_file:
top_multiboot_file.write(multiboot_header)
top_multiboot_file.write(top)
print(
"""Foboot build complete. Output files:
{}/gateware/top.bin Bitstream file. Load this onto the FPGA for testing.
{}/gateware/top-multiboot.bin Multiboot-enabled bitstream file. Flash this onto FPGA ROM.
{}/gateware/top.v Source Verilog file. Useful for debugging issues.
{}/software/include/generated Header files for API access.
{}/software/bios/bios.elf ELF file for debugging bios.
""".format(output_dir, output_dir, output_dir, output_dir, output_dir))
if __name__ == "__main__":
main()