The differences are documented in the script itself, but the main odd
bit is that we pass the provided kernel as an initramfs. Our modified
loader will probe for the initramfs start/end props in FDT and put up
a memdisk that we load the kernel from. This choice was made for two
reasons:
1.) Avoid ad-hoc interpretations of a memory region in m1n1, it doesn't
care if we actually passed it an initramfs or not anyways.
2.) We already had some code on hand to do this in our loader, so I
suspect we've done similar shenanigans elsewhere anyways.
This also requires a U-Boot change to allow bootefi of an arbitrary
location, as long the size is provided.
The alignment constraints for loader/kernel were kept arbitrarily. The
kernel will be bounced anyways by loader. I don't recall what
alignment requirements UEFI payloads have, but 2M seems reasonable.
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
-t is optional, we may not have a tty_dev, so we can avoid trying to
grab the baudrate from it if it's unspecified.
We don't want to use dtb_addr for booti; this is the unmodified payload.
m1n1 will load it and add bits to it at a separate address for passing
on to U-Boot. For booti purposes, we actually want the augmented FDT
rather than the user-specified.
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
The PCIe 4 link speed is only described as "target-link-speed" in the
"lan-10gb". This changed in macos 12.3 or earlier. Verified on Mac
Studio and with the template Mac Mini ADT.
Reported-by: Jeff Geerling <geerlingguy@mac.com>
Signed-off-by: Janne Grunau <j@jannau.net>
Adds support for up to 64-byte ops and more SIMD/paired operations.
This is good enough to trace a lot of GPU VM address space.
Signed-off-by: Asahi Lina <lina@asahilina.net>
Forces SW mapping but does not do any hooking. This can be useful for
testing the emulation or to work around issues with HW/SW map
differences.
Signed-off-by: Asahi Lina <lina@asahilina.net>
Turns out it's just an 8-bit bool, not 32 bits, and when cast to int
the top bits can cause it to be interpreted as an error randomly...
Signed-off-by: Hector Martin <marcan@marcan.st>
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>
Hardcoded pin maps do not make sense with additional HW support.
Allows tracing of a single pin in another tracing module, for example
for tracing the SPI cs pin.
Signed-off-by: Janne Grunau <j@jannau.net>
MMIO space differes between t8103 and t600x so the hardcoded RegMonitor
addresses make only sens on the former.
set_display_device difference is taken from macOS trace on t6001.
Signed-off-by: Janne Grunau <j@jannau.net>
