Hector Martin
64e6595f64
dts update for new kernel
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-05 02:58:08 +09:00
Hector Martin
e35ef6eb8c
smp: fix IRQs on secondary CPUs
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Seems one of the registers is some kind of system-level CPU spinup flag,
without which the CPU runs but the rest of the system thinks it's still
dead.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-05 02:58:08 +09:00
Hector Martin
cb7e7f7918
exception.c: print MPIDR with IRQs
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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
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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
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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
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-03 03:51:41 +09:00
Hector Martin
96d133e854
mmu: map device memory as non-executable
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This fixes the random SErrors after returning from a page fault. Turns
out the M1 was randomly deciding to speculate an instruction fetch from
address 0, triggering a fabric error.
Quoting the ARM ARM:
"Hardware does not prevent speculative instruction fetches from a memory
location with any of the Device memory attributes unless the memory
location is also marked as Execute-never for all Exception levels.
This means that to prevent speculative instruction fetches from memory
locations with Device memory attributes, any location that is assigned
any Device memory type must also be marked as execute-never for all
Exception levels. Failure to mark a memory location with any Device
memory attribute as execute-never for all Exception levels is a
programming error."
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-31 13:42:48 +09:00
Hector Martin
b65e2ca0e4
mmu: also set up high-VA translation
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Just an alias
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
f247643fe6
chainload.py: shut down mmu and flush caches when chainloading
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
2d5fb878f8
Makefile: build for armv8.2-a
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
b2ef461114
get rid of another warning pragma
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
919e3fb64a
exception: use 64bit print types
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
65c0632ae7
exception: do not reboot on SError
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This may or may not go well depending on the problem... but let's see
what happens.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
201d7d9a1e
exception: also print FAR_EL2
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
040cb9d6fd
exception: enable SError
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
bbe47b2f75
Move Apple ARM register definitions to cpu_regs.h
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
7807dad7bc
exception: add barriers around stuff
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This CPU really likes to speculate...
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
1f99c17fef
exception: clear L2C error status after exception
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
5dd63e41a1
exception: decode exception type on dumps
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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
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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
d31eab5f87
chickens: do not disable L2 subsystem errors
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These mean real problems, let's actually fix them instead of shoving
them under the carpet.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
4167a18a64
utils: move sys_reg and is_ecore() to utils.h
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 22:00:00 +09:00
Hector Martin
2df212bf5c
adt: use ADT_FOREACH macros internally
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This fixes some bugs too.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 03:15:00 +09:00
Hector Martin
dc2b7b3bb4
startup: clear bss section
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iBoot does this for us, but this is for the benefit of chainload.py and
other dump loaders that may not.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 03:03:03 +09:00
Hector Martin
b673db78c3
minilzlib/xzstream.h: get rid of warning pragma
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 03:03:03 +09:00
Hector Martin
74307af0df
kboot: add proper kernel boot & DT manipulation code
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
33d6c311ad
malloc.py: fix memalign
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
352c6945d1
chickens.py: fix some brokenness
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
ad93d14ee5
chickens: clear SYS_L2C_ERR_STS
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It's unclear why this is necessary, but it fixes some strange crashes
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
c057775ab9
adt: add ADT_FOREACH_PROPERTY
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
891bc5592e
utils.h: fix msr/mrs macro expansion
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
46a46da111
string: add memmove, strrchr, strncmp
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
b82c0072e7
utils.h: mark reboot() noreturn
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-30 01:37:09 +09:00
Hector Martin
d280157289
libfdt: actually add libfdt
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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
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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
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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
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-29 00:36:46 +09:00
Hector Martin
e97b104125
main: do not spin up SMP
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This breaks reloads, we shouldn't do this until we need to.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
eae3d06e85
smp: fix totally broken stack setup
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This worked by accident before...
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
11753f9983
start.S: probe the stack after init
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This makes it obvious when the stack is broken.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
cffc423024
smp: use ADT data instead of hardcoded info
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
b4822eb02c
adt: improve APIs for iterating through child nodes
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
db902ce01f
wdt: move WDT disable code to wdt.c & use ADT regs
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
3733ea153f
smp: fix broken spin-table routine
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Only read target_cpu once, then keep a pointer our spin table.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
ba1162e322
adt: add an API for resolving reg properties
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Sven Peter
9242c820ae
MMU: clean and invalidate all caches after shutdown
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Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-01-28 23:20:15 +09:00
Sven Peter
2f84b33ba8
MMU: add cache operations by set/way
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this embeds a slightly modified file taken from
arm-trusted-firmware.
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-01-28 23:20:15 +09:00
Sven Peter
f244919c98
MMU: add initial support
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Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-01-28 23:20:15 +09:00
Sven Peter
63fad7e3e2
utils.h: add panic() macro
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Signed-off-by: Sven Peter <sven@svenpeter.dev>
2021-01-28 23:20:15 +09:00
Hector Martin
d762391a68
Add code to spin up secondary CPUs
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 16:06:12 +09:00