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tools/chainload.py: Fix chainloading of xnu

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Signed-off-by: Asahi Lina <lina@asahilina.net>
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Asahi Lina 2022-11-25 15:27:55 +09:00 committed by Hector Martin
parent 3278d75453
commit fbc04995ab
1 changed files with 9 additions and 0 deletions
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9
proxyclient/tools/chainload.py
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@ -11,6 +11,7 @@ parser.add_argument('-n', '--no-sepfw', action="store_true", help="Do not preser
parser.add_argument('-c', '--call', action="store_true", help="Use call mode")
parser.add_argument('-r', '--raw', action="store_true", help="Image is raw")
parser.add_argument('-E', '--entry-point', action="store", type=int, help="Entry point for the raw image", default=0x800)
parser.add_argument('-x', '--xnu', action="store_true", help="Set up for chainloading XNU")
parser.add_argument('payload', type=pathlib.Path)
parser.add_argument('boot_args', default=[], nargs="*")
args = parser.parse_args()
@ -87,6 +88,11 @@ if len(args.boot_args) > 0:
print(f"Setting boot arguments to {boot_args!r}")
tba.cmdline = boot_args
if args.xnu:
# Fix virt_base, since we often install m1n1 with it set to 0 which xnu does not like
tba.virt_base = 0xfffffe0010000000 + (tba.phys_base & (32 * 1024 * 1024 - 1))
tba.devtree = u.ba.devtree - u.ba.virt_base + tba.virt_base
iface.writemem(image_addr + bootargs_off, BootArgs.build(tba))
print(f"Copying stub...")
@ -111,6 +117,9 @@ p.ic_ivau(stub.addr, stub.len)
print(f"Entry point: 0x{entry:x}")
if args.xnu:
p.display_shutdown(0)
if args.call:
print(f"Shutting down MMU...")
try: