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m1n1.hv: Copy /chosen/memory-map/preoslog if it exists

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preoslog was added in macos 12.3 and seems to contain iBootStage1 log
output. Since macos 12.3 accesses it it has to be copied to after the
guest image.

Signed-off-by: Janne Grunau <j@jannau.net>
This commit is contained in:
Janne Grunau 2022-03-19 15:07:18 +01:00 committed by Hector Martin
parent 0a1a9348c3
commit df53f16f76
1 changed files with 12 additions and 0 deletions
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12
proxyclient/m1n1/hv.py
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@ -1287,10 +1287,16 @@ class HV(Reloadable):
image = macho.prepare_image()
sepfw_start, sepfw_length = self.u.adt["chosen"]["memory-map"].SEPFW
tc_start, tc_size = self.u.adt["chosen"]["memory-map"].TrustCache
if hasattr(self.u.adt["chosen"]["memory-map"], "preoslog"):
preoslog_start, preoslog_size = self.u.adt["chosen"]["memory-map"].preoslog
else:
preoslog_size = 0
image_size = align(len(image))
sepfw_off = image_size
image_size += align(sepfw_length)
preoslog_off = image_size
image_size += preoslog_size
self.bootargs_off = image_size
bootargs_size = 0x4000
image_size += bootargs_size
@ -1329,11 +1335,17 @@ class HV(Reloadable):
print(f"Copying TrustCache (0x{tc_size:x} bytes)...")
self.p.memcpy8(tc_base, tc_start, tc_size)
if hasattr(self.u.adt["chosen"]["memory-map"], "preoslog"):
print(f"Copying preoslog (0x{preoslog_size:x} bytes)...")
self.p.memcpy8(guest_base + preoslog_off, preoslog_start, preoslog_size)
print(f"Adjusting addresses in ADT...")
self.adt["chosen"]["memory-map"].SEPFW = (guest_base + sepfw_off, sepfw_length)
self.adt["chosen"]["memory-map"].TrustCache = (tc_base, tc_size)
self.adt["chosen"]["memory-map"].DeviceTree = (self.adt_base, align(self.u.ba.devtree_size))
self.adt["chosen"]["memory-map"].BootArgs = (guest_base + self.bootargs_off, bootargs_size)
if hasattr(self.u.adt["chosen"]["memory-map"], "preoslog"):
self.adt["chosen"]["memory-map"].preoslog = (guest_base + preoslog_off, preoslog_size)
print(f"Setting up bootargs at 0x{guest_base + self.bootargs_off:x}...")