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chainload.py: Add support for setting boot-args

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2021-05-08 02:39:32 +09:00
parent aad892d461
commit adb91b4374
1 changed files with 16 additions and 4 deletions
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20
proxyclient/chainload.py
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@ -3,9 +3,10 @@
import argparse, pathlib, time
parser = argparse.ArgumentParser(description='Mach-O loader for m1n1')
parser.add_argument('-s', '--sepfw', action="store_true", help="Copy SEP firmware")
parser.add_argument('-c', '--call', action="store_true", help="Use call mode")
parser.add_argument('payload', type=pathlib.Path)
parser.add_argument('-s', '--sepfw', action="store_true")
parser.add_argument('-c', '--call', action="store_true")
parser.add_argument('boot_args', default=[], nargs="*")
args = parser.parse_args()
from setup import *
@ -32,7 +33,8 @@ image_size = align(len(image))
sepfw_off = image_size
image_size += align(sepfw_length)
bootargs_off = image_size
image_size += 0x4000
bootargs_size = 0x4000
image_size += bootargs_size
print(f"Total region size: 0x{image_size:x} bytes")
image_addr = u.malloc(image_size)
@ -46,9 +48,10 @@ if args.sepfw:
p.memcpy8(image_addr + sepfw_off, sepfw_start, sepfw_length)
print(f"Adjusting addresses in ADT...")
u.adt["chosen"]["memory-map"].SEPFW = (new_base + sepfw_off, sepfw_length)
u.adt["chosen"]["memory-map"].BootArgs = (image_addr + bootargs_off, bootargs_size)
u.push_adt()
print(f"Setting up bootargs...")
print("Setting up bootargs...")
tba = u.ba.copy()
if args.sepfw:
@ -57,6 +60,15 @@ else:
# SEP firmware is in here somewhere, keep top_of_kdata high so we hopefully don't clobber it
tba.top_of_kernel_data = max(tba.top_of_kernel_data, new_base + image_size)
if len(args.boot_args) > 0:
boot_args = " ".join(args.boot_args)
if "-v" in boot_args.split():
tba.video.display = 0
else:
tba.video.display = 1
print(f"Setting boot arguments to {boot_args!r}")
tba.cmdline = boot_args
iface.writemem(image_addr + bootargs_off, BootArgs.build(tba))
print(f"Copying stub...")