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672 commits

Author SHA1 Message Date
Hector Martin
aad892d461 fb: Implement fb_shutdown() & friends 
Clean up after ourselves before chainload

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-07 12:19:20 +09:00
Hector Martin
0ae3455d51 hv_vuart: World's stupidest virtual UART implementation 
Work in progress...

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-05 04:03:44 +09:00
Hector Martin
9407dba2e0 hv_vm: Initial data abort handling 
Supports software-mapping for a subset of ldr/str instructions.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-05 04:03:44 +09:00
Hector Martin
8a64441bcd hv_vm: Extend hv_translate() for stage1 and write modes 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-05 03:27:19 +09:00
Hector Martin
c0c7c57dd0 hv_vm: Fix bug inhv_pt_map_l4() 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-05 03:24:37 +09:00
Hector Martin
ce3a673413 uart: Move registers to uart_regs.h 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-05 03:23:25 +09:00
Hector Martin
27af846aae hv_vm.c: Move SPTE_TYPE to bit 50 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-05 03:23:04 +09:00
Hector Martin
0e987f031b utils: Add flush_and_reboot() to do the iodev flush dance 
Use this for exceptions, asserts, etc.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-05 03:21:48 +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
d35fa5e0fc iodev: Add iodev_console_kick() 
This is used prior to rebooting in exception handlers, to make sure all
the exception dump data gets sent to USB if we are connected via that.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-05 00:28:39 +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
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
4cc0f45c9d arm_cpu_regs.h: Add SYS_ESR_EL2 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-04 19:25:46 +09:00
Hector Martin
785dba33ad exception_asm: Fix missing register restores 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-04 19:24:52 +09:00
Hector Martin
a326aca956 hv: Enable physical timer for EL1 properly 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-04 19:23:35 +09:00
Hector Martin
23304719cd hv: Move VM code to hv_vm.c 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-04 15:38:17 +09:00
Hector Martin
95542a4619 kboot: Handle missing CPUs properly 
This is necessary to boot Linux in UP mode if we're in EL1 and the HV
does not support SMP yet.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-04 01:52:58 +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
1ae60ad715 hv: Beginnings of a hypervisor 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-01 19:21:33 +09:00
Hector Martin
1ff5b82aab iodev/usb: Do not crash if USB was not initialized 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-01 19:04:38 +09:00
Hector Martin
68156fd806 utils.h: Add alignment and field macros 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-01 19:02:49 +09:00
Hector Martin
26c4ab3888 formatting: Sort main include first 
clang-format is supposed to do this, but for some reason it's "sticky"
and doesn't...

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-01 18:31:58 +09:00
Hector Martin
45a0054f63 Add build-time printf() argument checking and fix warnings 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-01 18:23:44 +09:00
Hector Martin
882610b50e cpu_regs.h: s/SYS_APL/SYS_IMP_APL/ to match Linux 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-29 15:45:44 +09:00
Hector Martin
c2e2094b95 usb_dwc3: Add missing space to product name string 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 19:10:41 +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
bcece01769 usb: Hook up to iodev and bring up after payload boot attempt 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:47:43 +09:00
Hector Martin
4f7ae843fa usb_dwc3: Fix read/write transfer pumping, add missing funcs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:45:19 +09:00
Hector Martin
df9218582e usb_dwc3: Use new VID/PID 
Not official yet, PR:
https://github.com/pidcodes/pidcodes.github.com/pull/635/files

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:45:19 +09:00
Hector Martin
108f104e96 usb_dwc3: USB compliance improvements 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:45:19 +09:00
Hector Martin
fcdf2aede9 smp: Print success message on CPU#0 
SMP secondary prints only go to UART, so we need something on the main
CPU for other iodev consoles.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:45:19 +09:00
Hector Martin
34c1dc50ae iodev: Add iodev_handle_events() and iodev_console_flush() 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:45:19 +09:00
Hector Martin
d3957cc89d iodev: Fix error returns for iodev_read/write 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:45:19 +09:00
Hector Martin
565753980a iodev: Move primary core check into iodev, always use in_iodev logic 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:45:19 +09:00
Hector Martin
303118fd93 uartproxy: Convert to iodev 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-17 16:26:41 +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
c8f59566eb fb: Remove unused enable/disable code 
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
Hector Martin
cc4a5d312d iodev: Add new framework for I/O and console devices 
This replaces the earlier earlycon with a single shared console buffer
for all output devices.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-15 23:18:57 +09:00
Hector Martin
1c518ded09 types.h: Include stdbool.h, define ssize_t 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-15 23:18:57 +09:00
Hector Martin
d63e84d2f7 fb: add fb_console_reserve_lines() 
This is like fb_console_scroll(), but only scrolls if necessary to
ensure that enough free space is available at the end of the console.
This avoids spuriously scrolling during shutdown if we still have space.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-15 23:18:57 +09:00
Hector Martin
151c601b2a Revert "fb: add earlycon to capture messages before fb_init" 
This is being replaced with a global buffer in iodev.

This reverts commit 5d4067642e.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-15 23:18:57 +09:00
Sven Peter
add04246e7 usb: add clock/power/phy bringup 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-15 18:39:33 +09:00
Sven Peter
59ba266b11 usb: add DWC3 CDC ACM code 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-15 18:39:33 +09:00
Sven Peter
ea362ea8f9 ringbuffer: add a simple ringbuffer data structure 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-15 18:39:33 +09:00
Sven Peter
00e862238c usb: add usb_types.h 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-15 18:39:33 +09:00
Sven Peter
50afcd1ffe usb: add more registers and removed linux-specific code from usb_dwc3_regs.h 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-15 18:39:33 +09:00
Sven Peter
ac13c3b17f usb: add drivers/usb/dwc3/core.h from linux 
This file is taken from commit 7bc5a6ba369217e0137833f5955cf0b0f08b0712 before
the license was changed to GPLv2-only.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/usb/dwc3/core.h?id=7bc5a6ba369217e0137833f5955cf0b0f08b0712

core.h is copyright:
  Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
  Authors: Felipe Balbi <balbi@ti.com>,
	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
and dual-licensed under the GPLv2 and BSD3.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-15 18:39:33 +09:00
Sven Peter
17fdc79c13 utils.h: add mdelay 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-15 18:39:33 +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
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
Sven Peter
5d4067642e fb: add earlycon to capture messages before fb_init 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 18:11:37 +09:00
Sven Peter
2873aed75a memory: speed hack: scroll fb console before shutting down the MMU 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 18:11:37 +09:00
Sven Peter
fd2deed39b fb: add framebuffer console 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 18:11:37 +09:00
Sven Peter
819b16fbe4 fb.c: minor cleanup 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 18:11:37 +09:00
Sven Peter
05e7306bf9 fb console: add Source Code Pro font 
This font is licensed under the OFL-1.1 License and copyright:

Copyright 2010-2019 Adobe (http://www.adobe.com/), with Reserved Font Name 'Source'.
All Rights Reserved. Source is a trademark of Adobe in the United States and/or other countries.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 18:11:37 +09:00
Sven Peter
f80933a7d3 utils.h: add is_primary_core 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 18:11:37 +09:00
Sven Peter
1a04590ed3 utils.h: add min and max 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 18:11:37 +09:00
Hector Martin
9fc3f0c230 exception: Print exception context for FIQ 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-04-14 17:48:02 +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
Sven Peter
8efff1b0ab dart: add code to setup the DART iommu 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 17:40:07 +09:00
Sven Peter
1e247107aa types: add SZ_2K/SZ_16K/SZ_1M 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-14 17:40:07 +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
b31e1265ff pmgr: add functions to enable/disable clocks 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-11 05:26:29 +09:00
Sven Peter
95b1cb39fc utils.h: add poll32 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-11 05:26:29 +09:00
Sven Peter
bf3830ee6d utils.h: add dma_mb,dma_rmb,dma_wmb 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-11 05:26:29 +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
d73276b0bc tunables: add initial version. 
There are at least two types in the ADT related to USB,
but there's a decent chance that there are even more
required for other devices:

 * A simple tunable that applies to a whole device node
   and all its MMIO ranges specified in the "reg" property.
   This one seems to just be mask32.

 * A slightly more complex tunable that applies to a single
   MMIO range specified in the "reg" property. So far I've
   only seen 32 bit masks but the format looks like it should
   also support 8,16 and 64 bit masks.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-04-08 20:32:12 +09:00
Hector Martin
35f2b2435e kboot: reserve m1n1 in memory 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-03-15 02:26:13 +09:00
Hector Martin
efa4452a47 Fix libc header dependencies 
Turns out we had a bunch of silly dependencies on libc headers that are
not included with freestanding compilers. Fix all this and change the
CFLAGS to exclude libc headers and only include the built-in compiler
path.

Add our own versions of assert.h, errno.h, limits.h, and move malloc.h
and string.h together into a new path used as -isystem, so these headers
can be included using #include <>.

Remove a bunch of other dependencies in third-party code.

Add a strnlen function.

Disable building the libfdt overlay code for now, as it needs a strtoul
implementation. We can throw that in if/when we decide to use overlays.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-03-08 01:31:14 +09:00
Hector Martin
ce2038c59c memory: use tlbi vmalle1is 
This works at both EL1 and EL2(with VHE) and seems to do the right
thing.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-03-04 22:39:26 +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
f669237c2a start.S: clean up some junk 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-03-04 21:27:25 +09:00
Hector Martin
16cff51bd4 exception,memory: s/EL2/EL1/ 
Since we're in VHE mode, we can pretend to be in EL1 - but this will
allow us to really run in EL1 if we want to in the future.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-03-04 20:31:36 +09:00
Hector Martin
4282cd0578 exception: size tables properly, work around overeager clang-format 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-03-04 19:52:53 +09:00
Hector Martin
d5acb000f2 kboot: add support for KASLR and bootloader randomness 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-03-04 19:47:39 +09:00
Hector Martin
8e4b99d75a memory: reformat and shorten MAIR_INDEX to MAIR_IDX 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-03-04 19:47:37 +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
b5cbf7360e exception: handle PMC FIQs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-18 17:55:55 +09:00
Hector Martin
cf640de6db utils.h: add BIT() macro 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-18 17:55:55 +09:00
Hector Martin
17aca31498 utils.h: move reg_{clr,set,mask} here from chickens.c 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-18 17:55:55 +09:00
Hector Martin
86a7d9c0f3 cpu_regs.h: s/SYS_/SYS_APL_/ 
This synchronizes the register naming convention with Linux

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-18 17:55:55 +09:00
Sven Peter
f3eed1c7d7 MMU: correctly map MMIO/PCIe ranges 
Previously all MMIO was mapped twice with different attributes
which may or may not lead to strange behaviour when the same
physical range is accessed from both mappings.

We now have a better idea which ranges require nGnRE and nGnRnE
and can just do it correctly instead.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-02-18 16:16:55 +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
Sven Peter
1ccf2e2af5 utils.h: add writeread{8,16,32,64} 
These functions all perform a store direcly followed by a load.
This is useful to e.g. useful to find busy bits which might
already be cleared a few cycles after a write.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-02-18 16:12:28 +09:00
Sven Peter
24938db17a MMU: use alle2 instead of vmalls12e1is to invalidate TLBs 
I can't remember why I used vmalls12e1is but this leads to
the following bug:

  1. Load m1n1 with normal MMU setup
  2. Disable all mappings, recompile and chainload to that m1n1
  3. Everything will work fine for a while even though it should explode
     when enabling the MMU.

This happens becuse there are still stale TLB entries in some cache.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-02-15 01:37:39 +09:00
Hector Martin
d46d51d7ed exception: fix vtimer FIQ masking 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-11 01:35:23 +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
eab71ee92b fb, kboot: handle Retina flag correctly 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-06 22:27:45 +09:00
Hector Martin
5dbc82a9ee payload: add support for booting in-line payloads 
Usage:

$ cat m1n1.macho Image.gz apple-j274.dtb initramfs.gz \
    > m1n1-payload.macho

That's it.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-06 16:44:10 +09:00
Hector Martin
93bad96311 minilzlib: fix support for non-CRC32 checksum types 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-06 16:44:10 +09:00
Hector Martin
61e2c36ef5 tinf, minzllib: support unknown input sizes 
This can be used when the input file size is unknown: the decompression
functions will keep track of it and return it to the caller instead.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-06 16:44:10 +09:00
Hector Martin
0cd328214c exception: handle all 4 available timer FIQs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-06 16:44:10 +09:00
Hector Martin
5aff13c404 proxy: add missing SPDX header 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-06 16:44:10 +09:00
Hector Martin
5e5627cd0b clang-format: Add include block configs, reformat 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-06 16:44:10 +09:00
Ariel Machado
476182e1f8 utils.h: Fix 'asm-operand-widths' warnings with clang 
Signed-off-by: Ariel Machado <ariel@fe.up.pt>
 2021-02-06 12:13:29 +09:00
Hector Martin
8691fcee8a kboot: fix fb debug print 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-05 03:49:20 +09:00
Hector Martin
234a511e35 kboot: add spin-table and SMP support 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-05 02:58:08 +09:00
Hector Martin
aaab2c6ca1 chickens: set WFI mode to clockgate only 
This preserves CPU registers.

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 
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 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-02-05 02:58:08 +09:00
Hector Martin
96d133e854 mmu: map device memory as non-executable 
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 
Just an alias

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 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-30 22:00:00 +09:00
Hector Martin
919e3fb64a exception: use 64bit print types 
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 
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 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-30 22:00:00 +09:00
Hector Martin
040cb9d6fd exception: enable SError 
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 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-30 22:00:00 +09:00
Hector Martin
7807dad7bc exception: add barriers around stuff 
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 
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 
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
d31eab5f87 chickens: do not disable L2 subsystem errors 
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 
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 
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 
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 
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 
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 
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 
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 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-30 01:37:09 +09:00
Hector Martin
46a46da111 string: add memmove, strrchr, strncmp 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-30 01:37:09 +09:00
Hector Martin
b82c0072e7 utils.h: mark reboot() noreturn 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-30 01:37:09 +09:00
Hector Martin
d280157289 libfdt: actually add libfdt 
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
e97b104125 main: do not spin up SMP 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-01-28 23:20:15 +09:00
Sven Peter
63fad7e3e2 utils.h: add panic() macro 
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 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-28 16:06:12 +09:00
Hector Martin
65276fdd3f utils.h: add memory clobbers 
We mostly use read32/write32 and friends to poke hardware registers,
which might have side effects on RAM, so just make everything a memory
clobber to avoid potential issues.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-28 16:06:12 +09:00
Hector Martin
0145830772 chickens: add firestorm chicken bits 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-28 16:06:12 +09:00
Hector Martin
344c84da17 clang-format everything 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-28 16:06:12 +09:00
Ariel Machado
51bf5c870a adt: replaces int to u32 and size_t for unsigned values. 
Makefile: increases compiler warnings

Signed-off-by: Ariel Machado <ariel@fe.up.pt>
 2021-01-25 19:18:30 +09:00
Hector Martin
cc34ace39a startup: Implement setting CPU chicken bits for Icestorm 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-25 19:11:54 +09:00
Hector Martin
58b643df77 clang-format a few missed things 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-25 17:25:49 +09:00
Hector Martin
a637b77816 Move minlzma.h -> src/minilzlib 
This stops clang-format from running on this header.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-25 17:25:44 +09:00
Hector Martin
14db0224af Add config.h for build-time config options 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-25 17:24:29 +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
009f04775e utils: add __assert_fail function to make assert() work 
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
Ferdinand Bachmann
afc5813635 exceptions: fix clang warning for msr arg 
Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
 2021-01-23 22:09:22 +09:00
Ferdinand Bachmann
8511d9ff74 start.S: clang compat, don't use '\r' in asm files 
Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
 2021-01-23 22:09:22 +09:00
Ferdinand Bachmann
75c3cd39d4 start.S: don't use caller-saved registers accross calls 
Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
 2021-01-23 22:09:22 +09:00
Ferdinand Bachmann
6ecf5d9fb5 types.h: remove redundant definition of NULL (defined in stddef.h) 
Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
 2021-01-23 22:05:37 +09:00
Ferdinand Bachmann
274ea2baf2 exceptions: remove unused push_hi_regs symbol, make _exc_entry a function 
Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
 2021-01-23 22:05:24 +09:00
Hector Martin
31b6af14b2 exception.c: fix sp calculation in print_regs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-18 01:57:27 +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
d49d0b781b adt: fix ignored qualifiers in adt_getprop_copy function prototype 
Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
 2021-01-16 05:12:48 +09:00
Sven Peter
3268aabb91 add missing const to src/adt.h 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-01-16 02:48:22 +09:00
Sven Peter
4c4850935f change #include <string.h> to #include "string.h" 
this is required to fix the following error when compiling with clang:

  CC    build/string.o
src/string.c:3:10: error: 'string.h' file not found with <angled> include; use "quotes" instead
         ^~~~~~~~~~
         "string.h"

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-01-16 02:48:08 +09:00
Clay Freeman
b0b3548f1d Error codes should be returned as negative values 
Signed-off-by: Clay Freeman <git@clayfreeman.com>
 2021-01-15 12:52:34 +09:00
Hector Martin
5175c7a31b Chainloading, ADT support, misc fixes 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-15 04:04:12 +09:00
Hector Martin
b8fd8363cd Make UART proxy work 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-15 04:04:12 +09:00
Hector Martin
152c96a34a Import UART proxy 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-15 04:04:12 +09:00
Hector Martin
8af9f1eb95 Initial commit 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-01-15 04:03:35 +09:00