Commit graph

1316 commits

Author SHA1 Message Date
Hector Martin
4b3f527de9 proxyutils: Disassemble faulting code on exceptions
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-05 00:46:48 +09:00
Hector Martin
652c7e27a1 proxyutils.py: u.inst -> u.exec and support assembly
Also refactor mrs/msr in terms of u.exec.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-05 00:28:39 +09:00
Hector Martin
50f112c396 hv: Add support for address translation & abort decoding
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-05 00:28:39 +09:00
Hector Martin
a3440f2b48 hv: Support cleanly exiting the hypervisor from an exception
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-05 00:28:39 +09:00
Hector Martin
5ad0bdf994 sysreg: Fix ESR_ISS_MSR.CRm field bounds
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 23:01:55 +09:00
Hector Martin
78895edf2c hv.py: Properly copy ADT and TrustCache into guest region
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 22:57:08 +09:00
Hector Martin
954408cc65 chainload: Support old-school call based chainloading
This is useful in the middle of the HV exception handler to reboot m1n1
entirely, since we can't do a clean exit the way we would for normal
chainloading.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 22:56:47 +09:00
Hector Martin
826bdb709c sysreg.py: Correct SPSR definition for AArch64 mode
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 20:05:54 +09:00
Hector Martin
4d64c33ca6 hv: Implement basic exception handling
Allows Python to handle hypervisor exceptions, and implements exception
info display and basic debug commands.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 19:36:23 +09:00
Hector Martin
b015dcf272 shell.py: Make usable as a module
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 19:35:19 +09:00
Hector Martin
315fcf36aa uartproxy: Add support for nested invocations
This allows the proxy to call back to Python for handling exceptions or
other events, passing reason information about why it was invoked and
returning normally when the exception has been handled.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 19:34:08 +09:00
Hector Martin
38b716c33c hv.py: Do not fail if ADT was already mutated
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 19:32:18 +09:00
Hector Martin
23c723003f sysreg.py: Move sysreg definitions here from proxyutils
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 19:31:41 +09:00
Hector Martin
35d564801a utils.py: Add Register class to handle register fields
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 19:26:41 +09:00
Hector Martin
2df4654555 hv.py: Disable secondary CPUs for now
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-04 01:52:58 +09:00
Hector Martin
948e507031 hv: Update ADT to fix SEPFW address and disable HV USB
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-03 21:30:30 +09:00
Hector Martin
9584e7d312 uartproxy: Add IODEV_WHOAMI feature to get current iodev
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-03 21:19:35 +09:00
Hector Martin
a3e50e8f44 proxy.py: Use the enum module for GUARD_/USAGE_/IODEV_
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-03 21:19:35 +09:00
Hector Martin
ec9221cf32 adt.py: Support serializing back to binary ADT
This should losslessly round-trip

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-03 21:19:15 +09:00
Hector Martin
7d18e8afb9 hv.py: Add missing file
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-03 21:18:57 +09:00
Hector Martin
1ae60ad715 hv: Beginnings of a hypervisor
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 19:21:33 +09:00
Hector Martin
4547773edf setup.py: Remove unnecessary imports
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 19:04:01 +09:00
Hector Martin
63366e43d2 proxy.py: Fix typo
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 19:03:46 +09:00
Hector Martin
5fdeb1c3e3 chainload.py: Remove useless import
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 19:03:21 +09:00
Hector Martin
8b1ea3f04d proxyutils: Make heap size configurable
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 19:02:25 +09:00
Hector Martin
2a1a04ea0d setup.py: Move baudrate auto setup to proxyutils
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 19:02:20 +09:00
Hector Martin
7c2dace0b0 chainload.py: Cleanup, move Mach-O loader to macho.py
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 15:16:02 +09:00
Hector Martin
a489a646bd Add tools for ARM sysreg database management
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 15:14:35 +09:00
Hector Martin
7bb490eb58 utils.py: New file for misc util functions (non proxy)
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 15:13:29 +09:00
Hector Martin
aaf4b2785b Rename utils.py -> proxyutils.py
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-01 15:13:06 +09:00
Hector Martin
fcd103b2a4 proxy.py: Reopen port on reboot if necessary
This is needed for USB mode, as the device re-enumerates after a reboot.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-27 19:49:59 +09:00
Hector Martin
80f73926e8 proxy.py: Move M1N1DEVICE/UART port open logic into UartInterface
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-27 19:49:59 +09:00
Jean-Francois Bortolotti
82978081f8 chainload.py: Fix el1 support
Signed-off-by: Jean-Francois Bortolotti <jeff@borto.fr>
2021-04-18 02:29:32 +09:00
Hector Martin
f6297437c0 linux.py: Allow specifying a separate TTY device
This allows e.g. opening a TTY on the UART serial device after
booting the kernel via USB.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-17 18:12:59 +09:00
Hector Martin
7dfe24ee2c Rework kboot/chainload flow to shut down before calling the next stage
Next stage boots now exit back to main() after replying to the proxy
command, allowing shutdown functions to be called. Introduces a new
P_VECTOR proxy op, distinct from P_CALL. The Python side is reworked
to remain compatible with older versions that do not support this.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-17 18:12:59 +09:00
Hector Martin
88e1612c09 uartproxy: s/CRCERR/CSUMERR/ and actually use it
It's not a CRC.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-17 16:25:48 +09:00
Hector Martin
8104ec02c4 iodev: Add proxy ops
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-15 23:18:57 +09:00
Hector Martin
ce79483165 proxy: Add support for passing buffer/string values to reqs
This only works if the utils class has been instantiated, which is a bit
of a hack.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-15 23:18:57 +09:00
Hector Martin
f8c1c65cf9 Revert "proxy: add fb console console ops"
This reverts commit de0456b9a5.

These ops become redundant with the new iodev control op.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-15 23:18:57 +09:00
Sven Peter
35007b700e proxy: add dart ops
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-04-15 01:36:29 +09:00
Hector Martin
6d87b3b016 chainload.py: Improve chainloading
- Support chainload-in-place
- Do Mach-O loading host-side
- Handle copying SEPFW (WIP, ADT not updated yet)

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-14 21:13:19 +09:00
Hector Martin
b40fffea20 adt.py: Add basic ADT parser
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-14 21:12:38 +09:00
Sven Peter
de0456b9a5 proxy: add fb console console ops
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-04-14 18:11:37 +09:00
Hector Martin
0df6db324b timer_test.py: More exhaustive tests
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-14 17:48:02 +09:00
Hector Martin
f30e91b933 asm.py: Build for ARMv8.2-A
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-04-14 17:48:01 +09:00
Sven Peter
1314a426e2 proxyclient: add PMGR ops
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-04-11 05:26:29 +09:00
Sven Peter
f17a15d19a proxyclient/i2c: experiment with the i2c and ti usb chip
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-04-09 14:47:22 +09:00
Sven Peter
8aa3c69a2d tunables: add tunables_apply_local_addr
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-04-08 20:32:12 +09:00
Sven Peter
a17e64f1e2 tunables: add proxy ops
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-04-08 20:32:12 +09:00
Sven Peter
ed72fe443c proxyclient/asm.py: allow to override compiler prefix
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-04-05 23:49:25 +09:00
Hector Martin
3a42f80a73 chainload.py: Set up sane EL1 config for timers/IRQs
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-28 19:31:14 +09:00
Hector Martin
70f6bc7514 linux.py: support up to 512MB kernels
Some people apparently have the patience to load KASAN kernels over
serial :-)

Also bump the python-managed heap to 1GB.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-08 01:33:43 +09:00
Hector Martin
3c514e826c fptest.py: test Apple floating-point controls
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-04 23:22:41 +09:00
Hector Martin
db49cc92f3 hacr_trap_bits.py: figure out HACR_EL2 sysreg traps
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-04 23:20:50 +09:00
Hector Martin
1a880518b0 chainload.py: implement chainloading at EL1
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-04 22:41:06 +09:00
Hector Martin
3bf3613e7d find_all_regs: print EL2-only registers
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-04 22:40:25 +09:00
Hector Martin
b8349819fe Implement calling code as EL1
This works by clearing HCR_EL2.TGE, and then doing essentially the same
thunk/return dance as for EL0 calls. However, since most EL1 exceptions
are not routed to EL2, we install hypercall vectors in EL1 to forward
them to EL2, and then short circuit the exception return to whatever
triggered the original exception.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-04 22:10:37 +09:00
Hector Martin
acf1198fbb timer_test.py: add test of HV/guest timers
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-01 01:47:42 +09:00
Hector Martin
0f2be2c0ee utils.py: unbork inst()
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-01 01:45:39 +09:00
Hector Martin
2f959f758c find_all_regs.py: show EL0-accessible registers
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-25 00:33:00 +09:00
Hector Martin
d918b066b6 utils.py: add silent and call arguments to msr/mrs
call allows the caller to override the function used for the function
call, e.g. to use EL0.

Use silent=True for find_all_regs.py

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-25 00:30:58 +09:00
Hector Martin
3872b1a7da exception: implement el0_call to run code as EL0
This lets us test register access and other features from EL0.

No serious attempt at security is made, but at least EL0 runs off of a
separate stack and can return to EL2 at any time with `brk`; we can
easily implement a guard mode to break straight to EL2 on exception
later if needed.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-24 21:48:12 +09:00
Hector Martin
73a85be2b8 memory: prepare for EL0 support
Enable EL0 access to MMIO/etc, but not main RAM, because AArch64
architecturally enforces EL0w ^ EL2x.

Instead, create an alias of main RAM to grant EL0 full permissions,
at 0x80_0000_0000.

Grant EL0 full access to MMIO stuff, since EL2 will never execute
from there.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-24 21:48:12 +09:00
Hector Martin
a0960fca81 find_all_regs.py: test writability
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-24 21:48:12 +09:00
Hector Martin
65824016b7 utils.py add silent argument to inst() 2021-02-24 19:01:17 +09:00
Hector Martin
64306e78a0 linux.py: only mask DAIF.IF
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-21 11:55:54 +09:00
Sven Peter
54a147013f chainload.py: compress payload to improve loading time
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-02-20 01:29:46 +09:00
Sven Peter
fa02cc9602 utils.py: add compressed writemem
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-02-20 01:29:46 +09:00
Hector Martin
b7d30250b2 utils: allow inst() to return r0 and take args
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-19 03:25:28 +09:00
Sven Peter
870fead39c proxyclient: add ops for writeread{8,16,32,64}
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-02-18 16:12:28 +09:00
Khoa Hoang
2789b6f3e0 proxyclient: add input support for tty mode
Use miniterm from pyserial for tty passthrough mode

Signed-off-by: Khoa Hoang <admin@khoahoang.com>
2021-02-13 02:48:58 +09:00
Hector Martin
207767472b Add find_all_regs.py (brute-force system regs)
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-11 00:56:19 +09:00
Hector Martin
063b9a1d27 exception: Add GUARD_SILENT feature to suppress logs
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-11 00:55:59 +09:00
Hector Martin
c1b9ef89b5 utils.py: guard mrs/msr/etc
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-11 00:55:59 +09:00
Hector Martin
7d3dd54441 utils.py: replace manual reg list with a full dump
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-11 00:55:59 +09:00
Hector Martin
ec59b0d2c7 chainload: do proper Mach-O parsing
This is required for payloads to work properly

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-06 16:44:10 +09:00
Hector Martin
d12ac86448 utils.py: add more timer registers
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-06 16:44:10 +09:00
Hector Martin
1bb05d056f linux.py: Fix and simplify argument count handling
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-06 16:44:10 +09:00
Janne Grunau
57c4ddd00d linux.py: add support for setting boot arguments
Signed-off-by: Janne Grunau <j@jannau.net>
2021-02-06 12:16:04 +09:00
Janne Grunau
214173ba51 linux.py: support xz compressed payload
3 second faster load and uncompress time for small kernel
(5.6M uncompressed, 2.1M gz and 1.6M xz). Compression method is
autodetect by the filename suffix or can be set by the '--compression'
command line option.
Also supports uncompressed payloads (no auto detection).

Signed-off-by: Janne Grunau <j@jannau.net>
2021-02-06 12:16:04 +09:00
Janne Grunau
128368751c linux.py: use argparse and pathlib
Signed-off-by: Janne Grunau <j@jannau.net>
2021-02-06 12:16:04 +09:00
Witold Baryluk
62db38ae91 Fix #! and exec bits for scripts
Signed-off-by: Witold Baryluk <witold.baryluk@gmail.com>
2021-02-06 12:01:15 +09:00
Hector Martin
5970824491 utils.py: add more ID registers
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-05 02:58:08 +09:00
Hector Martin
19f915b779 aic_test.py: more experiments
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-05 02:58:08 +09:00
Hector Martin
60665a2ee2 linux.py: spin up secondaries
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-05 02:58:08 +09:00
Iris Johnson
7fc52bc799 Fix broken hexdumps in proxy.py
Proxy.py has a few typos that appear if you try to use debug mode and dump a region of memory. This should fix those.

Signed-off-by: Iris Johnson <iris@modwiz.com>
2021-02-05 02:57:36 +09:00
Hector Martin
4c999733da setup.py: restore timeout properly after the baudrate guesswork
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-03 04:52:17 +09:00
Hector Martin
053f2edbc3 proxyclient: handle baud rate switching properly for non-Glasgow UARTs
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-03 03:51:41 +09:00
Hector Martin
f247643fe6 chainload.py: shut down mmu and flush caches when chainloading
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
6dde40b05c exception: introduce recovery from synchronous exceptions
Use this to recover from address faults in the proxy. Also print out L2
subsystem fault info.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
74307af0df kboot: add proper kernel boot & DT manipulation code
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
33d6c311ad malloc.py: fix memalign
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
352c6945d1 chickens.py: fix some brokenness
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
986c6730e9 Add heapblock and dlmalloc for managing memory
heapblock is a simple `sbrk` style implementation, also useful as an
"endless" decompression buffer. dlmalloc is used on top as a malloc
implementation.

This also changes how the Python side manages its heap. We still use a
python-side malloc implementation (since this is faster), and we put the
Python heap at the m1n1 heap + 128MB, without allocating it.
Hopefully this should never step on anything m1n1 neads, and avoids
having to manage freeing across Python script calls.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-29 16:25:15 +09:00
Hector Martin
f3d0a58f42 proxy: add mmu_shutdown call, use it for linux.py
I saw at least one SError crash on Linux after doing this, but can't
repro; unclear if related to the MMU changes or not...

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-29 00:36:46 +09:00
Hector Martin
c3c6e4e8f9 smp: add scaffolding and proxy funcs for cross-CPU calls
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-29 00:36:46 +09:00
Hector Martin
08763968ac malloc.py: add memalign
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 16:06:12 +09:00
Hector Martin
d0d691524c chickens.py: disable unnecessary stuff
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-25 19:11:42 +09:00
Hector Martin
fc6163c8d2 linux.py: add simple Linux loader
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-25 17:24:29 +09:00
Hector Martin
2647df774d chickens.py: chickenbits/tunables test code
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-25 17:24:29 +09:00
Hector Martin
c648a517e3 memdump.py: add simple memory dumper
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:43:21 +09:00
Hector Martin
e5caf91d79 utils: add u.inst() to run arbitrary instructions
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:43:21 +09:00
Hector Martin
99fb647a9b utils.py: add more ARM registers
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:43:19 +09:00
Hector Martin
7b53b0ae9c shell.py: remove missing unused import
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:43:18 +09:00
Hector Martin
644ab28e32 setup.py: fb is the framebuffer
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:43:16 +09:00
Hector Martin
e1f0be37b4 proxy.py: add a ttymode() call to switch to a dump terminal print
TODO: implement input

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:43:14 +09:00
Hector Martin
674a82a2bb aic_test: UART IRQ testing stuff
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:42:59 +09:00
Hector Martin
63319ed348 utils: implement udelay()
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:42:25 +09:00
Hector Martin
cfe597e447 proxy: introduce reboot() as distinct from vector()
vector() does not expect a reply, reboot() expects a hello reply.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:42:25 +09:00
Hector Martin
ee12d053a9 proxy: add XZ and GZ decompression functions and code
This embeds tinf and minlzma.

Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-23 22:42:23 +09:00
Hector Martin
74d3575369 proxyclient: Add aic_test
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-17 00:50:50 +09:00
Hector Martin
397bfa17c6 proxyclient: new asm/malloc/utils, clean up
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-17 00:50:34 +09:00
Hector Martin
81aaf2ed35 Basic exceptions, irq, cache mgmt support
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-17 00:49:22 +09:00
Ferdinand Bachmann
b02d70730a proxyclient: fix mask commands accidently sending clear opcode instead
Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
2021-01-16 02:48:48 +09:00
Hector Martin
d2fa0c9db9 README: add missing close angle bracket
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-15 13:04:14 +09:00
Hector Martin
bd19584743 proxyclient: initial files
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-15 04:04:12 +09:00