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410 commits

Author SHA1 Message Date
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