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606 commits

Author SHA1 Message Date
Hector Martin
23c3617cf2 payload: Complain loudly about devicetree platform mismatches. 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-20 02:26:24 +09:00
Hector Martin
f4e11a78c6 i2c: Add explicit delay to the i2c_xfer_read timeout loop 
We now set the timeout at 10ms without any bytes received.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-18 22:29:51 +09:00
Hector Martin
850a669436 tps6598x: Add a delay in the command poll loop 
It seems that if we poll too fast, we DoS the poor thing...

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-18 22:15:38 +09:00
Hector Martin
cc1fa67ff2 i2c: Use Repeat-Start condition for SMBus reads 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-18 22:15:13 +09:00
Hector Martin
26f636dbbb fb: Use 128-bitwise copies to speed up FB updates 
This makes it almost as fast as it was before the switch to an
uncached framebuffer, as far as I can tell.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-17 19:23:44 +09:00
Hector Martin
3b0d53d7b8 mcc: Guard against MCC count > max 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-17 10:14:15 +09:00
Hector Martin
0df392d0d3 mcc: Fix mcc_num_channels prop on t8103 
Bad copy and paste...

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-17 01:45:49 +09:00
Hector Martin
4b80041d6d mcc: New module to initialize the MCC memory controller. 
This turns on the system level cache. The carveout unmapping also moves
here, and now it handles T8103/T6000 properly.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-16 21:09:48 +09:00
Hector Martin
ecc80f4b32 kboot: Fix warning/bug introduced by ecb6c82e 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-16 21:09:12 +09:00
Hector Martin
b9ec73b019 smp: Leave the default boot stack for CPU#0 set in case it resets 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-16 17:26:52 +09:00
Hector Martin
33d09cc7c0 hv_exc: Filter out CYC_OVRD_DISABLE_WFI_RET 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-16 17:26:39 +09:00
Hector Martin
0f9c0f5dd3 startup: Add a UART print to the RVBAR entry path 
This might make it easier to debug CPU sleep modes

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-16 17:18:52 +09:00
Hector Martin
ecb6c82e75 kboot: Delete CPU nodes instead of disabling them 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-15 22:48:28 +09:00
Hector Martin
7690fd730c iodev: Bypass locks on all funcs if no MMU 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-15 22:47:45 +09:00
Hector Martin
257f6443a6 kboot: Fix potential bug handling missing/disabled CPUs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-15 14:52:10 +09:00
Jean-Francois Bortolotti
0131d16c0a Fix aic1 reg size 
Signed-off-by: Jean-Francois Bortolotti <jeff@borto.fr>
 2021-11-14 11:14:50 +09:00
Janne Grunau
46c945ac95 usb: use dynamic paths for usb related ADT nodes 
Adds support for the 3rd USB-C port on 2021 Macbook Pros.
Currently up to 8 USB-C ports are supported which should be sufficient
for expected future devices.

Tested on Macbook Pro 14" and Mac Mini.

Signed-off-by: Janne Grunau <j@jannau.net>
 2021-11-12 23:48:32 +09:00
Janne Grunau
b6ec7abc2b utils: replace sprintf with snprintf 
Converts all current users.

Signed-off-by: Janne Grunau <j@jannau.net>
 2021-11-12 23:48:32 +09:00
Janne Grunau
5064b93b2f usb: dynamically allocate and register usb iodevs 
Preparation for devices with more than 2 USB-C ports.

Signed-off-by: Janne Grunau <j@jannau.net>
 2021-11-12 23:48:32 +09:00
Janne Grunau
c40ef51084 usb_dwc3: robustness in usb_dwc3_write() 
Signed-off-by: Janne Grunau <j@jannau.net>
 2021-11-12 23:48:32 +09:00
Janne Grunau
91ff1ceb65 iodev: avoid direct access to iodev device array 
Preparation for dynamically alloced iodevs.

Signed-off-by: Janne Grunau <j@jannau.net>
 2021-11-12 23:48:32 +09:00
Janne Grunau
2724d69f4c iodev: usb: replace secondary usb iodevs with single vuart iodev 
Signed-off-by: Janne Grunau <j@jannau.net>
 2021-11-12 23:48:32 +09:00
Hector Martin
b50a489f41 chickens: Update Firestorm chickens & complete t600x 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-11 01:20:03 +09:00
Hector Martin
efca793572 pcie: Only print the port init msg for existing ports 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-11 01:20:03 +09:00
Hector Martin
510dd53175 pcie: Add t6000 support 
This one seems to need one extra magic poke

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-10 20:43:51 +09:00
Hector Martin
a83d0908e5 pcie: Add t6000 fuse bit map and fix fuse bit application 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-10 20:43:51 +09:00
Hector Martin
94a73a404c kboot: Disable USB dwc3 devices that are missing in the ADT 
This passes through the hypervisor USB device disable to Linux, so we no
longer need to hack device trees.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-10 20:43:51 +09:00
Hector Martin
e689ceb263 usb: Add usb_idx_from_address() to find a dev by its MMIO addr 
This will be used to match up ADT and FDT USB devices, to pass through
enable status.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-10 20:43:51 +09:00
Hector Martin
7e01af5144 kboot: Use _inplace setprop for the CPU release addr 
This needs to happen in-place for the iterator to not be invalidated.
Explicitly request that and fail if it does not work.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-10 20:43:51 +09:00
Hector Martin
e763ce3f56 hv: Set SMP mode to WFE 
This fixes early IRQs getting stuck in idle secondaries and breaking the
guest.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-08 19:57:02 +09:00
Hector Martin
84acf60c24 Fix warnings when building/linking with clang/llvm 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-08 13:53:04 +09:00
Hector Martin
4e4335a6ea chickens: Enable IRQs on t600x 
This seems to be safe to do on M1 too.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-04 04:03:41 +09:00
Hector Martin
0c093521de pcie: Basic t600x support 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-04 03:55:48 +09:00
Hector Martin
f5af1caee5 hv_exc: Forward more sysregs 
We don't normally trap these, but for experiments using TIDCP they are
useful to avoid.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-04 03:55:09 +09:00
Hector Martin
a383ef0b5a iodev: Protect iodevs with spinlocks 
This makes SMP IRQ reports less flaky

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-04 03:53:39 +09:00
Hector Martin
0005b6533b hv_exc: Add more sysreg passthroughs for t600x spam 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-04 03:52:43 +09:00
Hector Martin
77074b9098 hv_aic: Support AICv2 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-04 03:52:42 +09:00
Hector Martin
8fa422c0d3 fb: Map the framebuffer uncached, and use a shadow FB for speed 
Turns out AMCC on t600x throws errors when DISP0 real-time memory
requests hit the CPU cache, and then macOS panics.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-04 03:52:30 +09:00
Hector Martin
dc3806252b aic: Basic AICv2 support 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-04 03:52:30 +09:00
Hector Martin
f824f60f5c utils: Unbork udelay() 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-02 12:36:07 +09:00
Hector Martin
6765bc3ff6 hv_vm: Support >36-bit PAs 
This needs an extra L1 translation level, but only on SoCs with support
for >36-bit PAs. On M1, we bypass it and keep starting at L2.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-02 02:35:26 +09:00
Hector Martin
d7983c7173 arm_cpu_regs.h: Add SYS_ID_AA64MMFR0_EL1 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-02 02:23:07 +09:00
Hector Martin
e99138710a smp: Handle IRQ enable reg properly (maybe) 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 21:00:56 +09:00
Hector Martin
87613dc208 smp: Support more clusters/CPUs properly 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 21:00:56 +09:00
Hector Martin
9b6e5fbc52 cpufreq: Add preliminary T6000 support 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 21:00:56 +09:00
Hector Martin
d7bd21d51c usb: Use new DART code to autoselect compatible mode 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 21:00:56 +09:00
Hector Martin
1edb18ac44 pmgr: Do not try to fix up virtual devs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 21:00:56 +09:00
Hector Martin
84902062c9 dart: T6000 support 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 21:00:56 +09:00
Hector Martin
68aec75918 memory: Larger PA support & dynamically map MMIO 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 21:00:56 +09:00
Hector Martin
326ba6fb33 utils: Fix BIT() signedness 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 19:00:34 +09:00
Hector Martin
425daaedbd utils: Use CPU timer instead of AIC timer 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 19:00:34 +09:00
Hector Martin
95dd7b90a4 chickens: Add preliminary T6000 support 
P-core chickens need checking.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 19:00:34 +09:00
Hector Martin
ed21a80bc3 chickens: Refactor and update M1 bits 
This adds some missing fixes for M1/T8103 and reworks the code to split
off common parts, and also handle per-revision bits.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 13:41:12 +09:00
Hector Martin
7ff48f6201 memory: Make the RAM base dynamic 
For now we compute this as phys_base aligned down to a 4GiB boundary.
Hopefully that works for future SoCs too.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 13:39:40 +09:00
Hector Martin
38fc7a0780 Configure early debug features by SoC type 
To build a version with early UART support, set it in config.h

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-11-01 13:36:42 +09:00
Vincent Duvert
b15be6bcd7 Remove hardcoded UART/WDT addresses 
The M1 Pro/Max Macs use a different base address for the UART and the
WDT than earlier models.

Remove hardcoded base addresses constants and replace them with loads
from the ADT.

- The base address of the WDT is already retrieved in wdt_disable; also
use this address when triggering a reboot.
- Retrieve the base address of uart0 in uart_init. If the operation
fails, the error will be signaled on the early uart (if not disabled).
- The early debug UART can’t use the ADT (or shouldn’t) so it is now
disabled by default. To enable it, add
-DEARLY_UART -DEARLY_UART_BASE=0xuart_address
to the CFLAGS.

Signed-off-by: Vincent Duvert <vincent@duvert.net>
 2021-11-01 11:27:29 +09:00
Hector Martin
39d1d9a904 payload: Only load DTs that are compatible with this device 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-18 18:26:27 +09:00
Hector Martin
120ac16493 payload: Support setting boot-args as a payload. 
Just use "boot-args=foo bar baz\n" as a payload

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-18 18:18:01 +09:00
Hector Martin
097c2f752a payload: Make vars static 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-18 18:17:42 +09:00
Hector Martin
ef83f62d0e cpufreq: New module to initialize CPU p-states 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-18 17:34:40 +09:00
Hector Martin
4fa0200053 main: Export chip_id as a global 
Some things need to be chip-specific, as the ADT isn't generic enough.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-18 17:33:49 +09:00
Hector Martin
6d9bc7fa8f pmgr: Unify defs with Linux, clean up device relationships. 
This enables parent devices that are required by active child devices,
because iBoot leaves behind some broken dependencies.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-18 16:52:59 +09:00
Hector Martin
5787eb2d64 hv_exc: Fix global IPIs 
Reported-by: Joey Gouly <joey.gouly@arm.com>

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-18 13:26:28 +09:00
Hector Martin
72788291e6 memory: Map all RAM to the top, minus carveouts 
This unbreaks dcp.py and other things that need to access reserved
regions. This way we don't have to start doing manual MMU maps, but
we're still safe from SErrors caused by hitting TZ carveouts.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-16 01:00:33 +09:00
Hector Martin
1444c93a24 proxy: Add P_MMU_INIT_SECONDARY 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-15 23:44:12 +09:00
Hector Martin
da024ffbd8 memory: Only map available RAM 
We saw some crazy speculation running in the HV breaking things by
reading from invalid RAM, so let's actually map only what's available.
For now we do map all lowmem as we haven't seen SErrors there yet, but
we stop at the high boundary.

Fixes: #97

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-15 23:44:12 +09:00
Danny Lin
37e8f425bf smp: Fix smp_call macros with fewer than 4 arguments 
The full 4-argument version of smp_call is smp_call4; smp_call doesn't
exist.

Signed-off-by: Danny Lin <danny@kdrag0n.dev>
 2021-10-11 12:42:31 +09:00
Hector Martin
e1515b4376 i2c: Make error paths wait for bus in i2c_smbus_read 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-10 23:49:51 +09:00
Hector Martin
64cb9892b1 tps6598x: Correctly clear all IRQ flags 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-10 23:18:04 +09:00
Hector Martin
675f11dc59 tps6598x: Get rid of TPS_WRITE_DELAY 
This was a poor workaround for the broken i2c code.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-10 23:16:26 +09:00
Hector Martin
d20a79435c i2c: Fix waiting for read transactions 
We weren't waiting until the STOP after reads, causing borkage.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-10 23:15:32 +09:00
Hector Martin
11ba4a0aac hv: format fix 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-03 00:30:42 +09:00
Hector Martin
b9f1eb29e9 kboot: Only try to parse actual CPUs in /cpus 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-10-03 00:28:08 +09:00
Hector Martin
2736f0dd07 hv: Transfer ACTLR_EL1 (not just EL2) to secondaries 
Also capture config at cpu0 guest entry time, to make sure we don't
carry over guest changes to EL1 regs after that.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-24 10:57:27 +09:00
Hector Martin
5eed8f674d hv_vm: Fix guest SError handling 
This was broken, but somewhat masked by another bug in hv_vm.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 22:17:52 +09:00
Hector Martin
56c3d93787 hv_exc: Enable SErrors in the hypervisor 
This finally works properly now

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 21:18:13 +09:00
Hector Martin
78cf104b1f hv_vm: Guard emulated read/writes to catch SErrors/aborts 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 21:18:13 +09:00
Hector Martin
4f92a77efd exception: Allow guarding SError exceptions 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 21:18:13 +09:00
Hector Martin
25bc815821 hv: Store exception info regs on entry, and use it 
This is the second part of allowing nested exceptions

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 21:18:13 +09:00
Hector Martin
607464f8b0 proxy/uartproxy/hv_asm: Add syncs to flush SErrors 
This makes sure any pending memory ops that might trigger an
asynchronous SError do so here, and not later. This fixes SErrors
breaking proxy ops.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 20:31:52 +09:00
Hector Martin
d44d0a4f16 Revert "hv_asm: Unmask SErrors inside the HV" 
This reverts commit bb7c8ad3c5.

This is broken.
 2021-09-21 20:30:07 +09:00
Hector Martin
bce239b36f exception: Make space in the stack for full exception context 
This is step 1 of the rework to make reentrant exceptions work

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 20:29:19 +09:00
Hector Martin
a16731e8b3 hv_exc: Avoid delivering spurious HV-triggered IPIs to the guest 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 17:13:03 +09:00
Hector Martin
098d394a5c exception: Handle Fast IPIs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 13:33:23 +09:00
Hector Martin
0e3770ca47 hv, m1n1.hv: Add cpu() command to switch CPU contexts 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 13:18:06 +09:00
Hector Martin
977cbdf4f8 hv_exc: New time accounting around Python callbacks 
This does an explicit hypervisor rendezvous. It's not great because it
introduces spurious guest IPIs, but xnu doesn't seem to care...

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 13:17:00 +09:00
Hector Martin
64dab94821 hv_aic: Use aic.h instead of just declaring aic_base 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 00:42:19 +09:00
Hector Martin
945b75a0f8 hv_aic: Fix regression introduced by 4b4ae3ab 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-21 00:40:04 +09:00
Hector Martin
ffacef41ee iodev, exception: Remove gratuitous UART usage 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-19 22:33:20 +09:00
Hector Martin
edb32c48a2 smp: Allow switching back to wfe for the smp spinloop 
This is what Linux expects, so we'd better do it in kboot.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-19 02:17:04 +09:00
Hector Martin
c3ba77ce16 hv_exc: Handle SYS_IMP_APL_CYC_OVRD in the fast path 
m1n1 now uses this for SMP, and due to wfi FIQ leakage from the HV
timer this gets spammed thousands of times per second. Handle it in
the HV directly.

Fixes: #107

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-18 22:33:28 +09:00
Hector Martin
2d952752db proxy: Add smp_wait() to the proxy 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-17 15:25:34 +09:00
Hector Martin
b1bc4023dc smp: Use wfi and put idle CPUs in deep sleep 
This allows a single active P-Core to boost to 3.2GHz.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-17 00:15:52 +09:00
Hector Martin
10880ca1a6 hv_vm: Unbork >32bit mmiotrace 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-16 03:01:10 +09:00
Hector Martin
09a44e5a92 hv_exc: Disable stolen time accounting 
This doesn't work with SMP.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:32:57 +09:00
Hector Martin
509481d5d5 hv: Add SMP support 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:32:57 +09:00
Hector Martin
184a516367 hv_exc: Make IPI/IRQ/timer/PMC emulation storage per-CPU 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:26:14 +09:00
Hector Martin
56b54a6641 hv_vm/hv_exc: Add cpu_id to exception & mmiotrace structs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
a13a23d5fa iodev: Add a spinlock and allow console for secondaries 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
cd59d39686 memory.h: Add mmu_active() function 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
c690eb1c9d utils: Make spinlocks reentrant 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
787c46e8c7 hv_exc: Add a Big Hypervisor Lock 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
d53b40da48 memory: Add mmu_init_secondary() to init MMU for secondaries 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
52f432f0f6 memory: Add guard pages at the end of stacks 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
2f8beb02b4 cpu_regs.h: Add more registers needed for HV config 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
8752d5fbba gxf: Per-CPU gxf stack 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
368b48a365 hv_wdt: Make HV WDT CPU configurable and WDT optional 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
6c186f8468 hv_asm: Move SP saving to a variable, per-CPU 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:24:37 +09:00
Hector Martin
c317b73b8c utils: Add a basic spinlock implementation 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:19:37 +09:00
Hector Martin
bb7c8ad3c5 hv_asm: Unmask SErrors inside the HV 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:19:37 +09:00
Hector Martin
90b10ef9f7 smp: Add smp_id() and use TPIDR_EL[12] to keep the SMP ID 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 23:19:37 +09:00
Hector Martin
571a19c9a3 smp: Align secondary_stacks & export to header 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 22:00:29 +09:00
Hector Martin
4acc3d7c7f hv_vm: Mask off operand size for store emulation 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-09-15 17:42:03 +09:00
Mark Kettenis
4e88360eb1 main: Fix compiler error 
Older versions of GCC throw a "initializer element is not contstant"
error.  Fix this.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
 2021-09-03 10:59:46 +09:00
Hector Martin
fa50bb6474 fb: Do not restore logo when using kboot 
Also don't clear the whole screen, only the console section so the logo
is glitchless.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-31 14:10:52 +09:00
Mark Kettenis
77b0cdb7c9 pcie: Only initialize ports that are actually present 
The macbook pro and macbook air only have a single PCIe port

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
 2021-08-31 02:07:24 +09:00
Hector Martin
56799d34e8 usb_dwc3: Properly handle CDC status separately per pipe 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-30 23:53:05 +09:00
Pip Cet
b7ad368158 uart: avoid relying on UTRSTAT_RXD == 1 
Signed-off-by: Pip Cet <pipcet@gmail.com>
 2021-08-24 22:11:19 +09:00
Pip Cet
6a92a3e71a iodev, usb_dwc3: cosmetic fixes 
Signed-off-by: Pip Cet <pipcet@gmail.com>
 2021-08-24 22:11:19 +09:00
Pip Cet
9a5707889a hv_vuart: Avoid reporting bytes in the RX buffer when it's empty. 
Signed-off-by: Pip Cet <pipcet@gmail.com>
 2021-08-24 21:07:43 +09:00
Hector Martin
19b16f77d8 startup: Split density field from depth print 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-24 21:00:50 +09:00
Hector Martin
017f050fff hv_vuart: Implement RX & enough to support Linux 
This works to get to a serial shell on Linux, and to use m1n1-as-LV1
proxyclient with M1N1DEVICE=/dev/m1n1-sec

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-23 17:02:28 +09:00
Hector Martin
4b4ae3ab90 aic: Add trivial AIC scaffolding, move regs to aic_regs.h 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-23 17:01:33 +09:00
Hector Martin
18eb02fa92 uart: Add more UART reg defines and use them 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-23 17:00:53 +09:00
Hector Martin
31bf2b5ac9 iodev: Make iodev_can_read() return the queued byte count 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-23 17:00:14 +09:00
Hector Martin
3bdf036161 Revert "cpio: add functions to create cpio images" 
This reverts commit cd4b563a31.
 2021-08-23 15:27:37 +09:00
Hector Martin
68c1f1c1a6 Revert "kboot: move SEPFW to initrd before booting" 
We've decided this needs to go via reserved-ranges, not in the
initramfs.

This reverts commit 6afe9ebaf9.
 2021-08-23 15:27:20 +09:00
Hector Martin
f8110dd409 hv_exc: Handle M1RACLES mitigation here due to 12.0 spam 
macOS 12.0 added a silly ineffective "mitigation" that clears the
register on every context switch. This doesn't actually mitigate
anything, but it does make this sysreg trap performance-critical,
so we have to move its handling into the C side.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-14 16:30:18 +09:00
Hector Martin
a18033e569 main: Add a searchable tag to find the m1n1 version 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-08-12 16:13:33 +09:00
Alyssa Rosenzweig
a52330809b startup: Prettyify video depth dump 
Use the right unit. for rgb10x2, this prints "30bpp" instead of "0x1E".

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2021-08-03 13:48:28 +09:00
Sven Peter
856a9dbd1b usb: don't initialize more than once 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-07-10 16:29:05 +09:00
Sven Peter
5d2315a865 uartproxy: flush iodev before shutting down 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-07-10 16:29:05 +09:00
Sven Peter
e0d889fac1 hv: add proper single stepping support 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-07-09 15:52:40 +09:00
Sven Peter
6afe9ebaf9 kboot: move SEPFW to initrd before booting 
Bootstrapping SEPOS requires to setup a scratch buffer and
will have to be handled by the final OS. We pass along
the firmware image by appending it to the initramfs.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-07-09 15:40:11 +09:00
Sven Peter
cd4b563a31 cpio: add functions to create cpio images 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-07-09 15:40:11 +09:00
Hector Martin
95aeb7bb83 hv: Use hv_write_hcr() for initial configuration 
This might make things work if GXF is already enabled, maybe.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-06-22 01:15:00 +09:00
Janne Grunau
98076ef693 usb: disable tps6598x interrupts 
Restore the interrupt masks on chainload or HV guest start. The
interrupt mask is not restored on the USB-C port used by the hypervisor.
This prevents an interrupt storm in the guest when the other USB-C port
is exposed to the guest. Both tps6598x share unfortunately an interrupt
line.

Signed-off-by: Janne Grunau <j@jannau.net>
 2021-06-18 14:26:54 +09:00
Hector Martin
7e5054548a hv_vm: Rename SPTE_SYNC_TRACE to SPTE_TRACE_UNBUF 
It's not really synchronous, it just flushes USB buffering.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-06-15 16:10:06 +09:00
Hector Martin
a664bd5d55 hv_vm: Minor fixes to pagetable code 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-06-15 15:47:44 +09:00
Hector Martin
7ff613665b hv_asm.S: Add comments to the vectors 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-06-15 15:47:24 +09:00
Hector Martin
5751fa0019 hv_vm: Remove broken hv_max_proxy_hook 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-06-15 15:47:07 +09:00
Mark Kettenis
d33d7ba89d kboot: Provide MAC addresses in device tree 
Read the MAC addresses from the ADT and store them in
"local-mac-address" properties on the relevant nodes in the FDT.
This relies on appropriate aliases in the provided FDT, which
matches how U-Boot provides MAC addresses on embedded targets.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
 2021-06-15 15:27:18 +09:00
Sven Peter
9e061c2b50 usb_dwc3: shutdown the DART as well when shutting down usb 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-06-10 15:41:33 +09:00
Janne Grunau
88275b5cb5 hv: add AIC interrupt tracing 
Implemented by MMIO tracing of AIC's event register. Proposed by pipcet.

Signed-off-by: Janne Grunau <j@jannau.net>
 2021-06-10 15:41:02 +09:00
Sven Peter
3e807d6686 dart: shutdown to bypass mode 
This allows payloads to use DMA for anything that's not PCIe
even without a DART driver. It also restores the DART registers
the state the were left by iBoot.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-06-10 00:00:37 +09:00
Janne Grunau
4b5c016368 hv: disable PMU counters inside the hypervisor 
Signed-off-by: Janne Grunau <j@jannau.net>
 2021-06-09 19:47:20 +09:00
Janne Grunau
d61bf13cb0 hv: shadow perf monitor IRQ mode and state 
The development Mac OS kernel panics if the PMCR0 sysreg is in an
unexpected state. To avoid that the hypervisor needs to shadow the
interrupt mode and interrupt active flag after it mask the PM FIQ.
Mac OS reads and writes frequently from PMCR0 and PMC 0/1 so handling
in m1n1 is preferred over Python.

Signed-off-by: Janne Grunau <j@jannau.net>
 2021-06-09 19:47:20 +09:00
Sven Peter
9529ec2b4f usb: add hpm_init and split usb_init and usb_iodev_init 
This allows to bringup the USB PHY and the HPM for the
payload without having to initialize the CDC ACM driver
at the same time.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-06-09 19:45:38 +09:00
Sven Peter
d2b619957c tps6598x: add support for the USB PD chip 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-06-09 19:45:38 +09:00
Sven Peter
103100bb42 i2c: add i2c support 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-06-09 19:45:38 +09:00
Hector Martin
a175b6d159 proxy: Add reboot() call to hard reboot the system 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-06-04 15:09:11 +09:00
Hector Martin
393089f076 hv_exc: Also pass through (E)HID4, since it's noisy 
This seems to be poked every time the kernel does a specific kind of
dcache flush...

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-30 03:37:12 +09:00
Hector Martin
f1cfe27e31 hv: Use AFSR_GL1 when in guarded mode. 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-30 03:34:17 +09:00
Hector Martin
cd5a00ec87 uartproxy: Use only appropriate iodevs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-30 02:11:10 +09:00
Hector Martin
c794ea6dc2 hv_vuart: Make compatible with xnu and enable 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-30 01:39:26 +09:00
Hector Martin
ccc2d0b450 usb_dwc3: Implement CLEAR FEATURE, tweak things 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 17:52:48 +09:00
Hector Martin
4195b09c41 hv_wdt: Remove dead include 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 04:30:13 +09:00
Hector Martin
775902112d hv.py: Add M1RACLES mitigation 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 02:41:17 +09:00
Hector Martin
fe651cb9d7 hv_vm: Add more load/store emulation 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 02:13:23 +09:00
Hector Martin
12a7a0f1bb hv_exc: Allow the guest to see a bit of stolen time 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 02:13:23 +09:00
Hector Martin
fe2e89573e hv: Move break handling to hv_tick(), properly poll 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 02:13:23 +09:00
Hector Martin
66fc157e94 fb: Improve visuals 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 00:45:05 +09:00
Hector Martin
db0252a1d6 hv_exc: Steal time from the guest during HV exceptions 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 00:38:42 +09:00
Hector Martin
dd443d2c2c cpu_regs: Fix missing IMP_APL prefixes 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 00:38:11 +09:00
Hector Martin
0265edebba hv_exc: Add ACTLR_EL1 sysreg forwarding 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 00:37:48 +09:00
Hector Martin
a21e46031e kboot: Only initialize PCIe when booting a kernel payload 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 00:04:52 +09:00
Hector Martin
bd8ae6f4f6 pcie: Add a pcie_shutdown() function and call it on hv init 
Guests don't like it if PCIe is initialized already

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-28 00:03:11 +09:00
Hector Martin
77a36a7d34 utils,proxy: Add basic SIMD register fetch and mutation support 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 22:57:25 +09:00
Hector Martin
ae55e1c5dc hv_vm: Add debug breadcrumbs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 22:05:23 +09:00
Hector Martin
f792b128c5 hv_vm: Suspend watchdog around mmiotrace event writes 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 22:05:23 +09:00
Vincent Duvert
3d1747466b Add an option to disable checksumming if possible 
* Introduce feature flags which allows the proxy and m1n1 to determine which
features they have in common.
* Add a feature flag that disables checksumming (by replacing checksums with
constant values) for the data packets exchanged by REQ_MEMREAD, REQ_MEMWRITE
and REQ_EVENT. The feature is enabled if m1n1 supports it; checksumming is kept
enabled for UART communication.
* To ensure no packet loss when checksumming is disabled, an extra sentinel
value is added after the exchanged data for memory read/write operations.

Signed-off-by: Vincent Duvert <vincent@duvert.net>
 2021-05-27 21:34:37 +09:00
Hector Martin
85411d1714 hv_vm: Add support for 128-bit ops, stp/ldp, fix some emu bugs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:29:58 +09:00
Hector Martin
bfe8c94c47 hv_wdt: Add hypervisor watchdog on secondary core 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:28:43 +09:00
Hector Martin
c93f856c92 exception: Only enable IRQs on the primary core 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:28:43 +09:00
Hector Martin
0a91cc2b08 gxf: Make gl_call work with GXF or SPRR locked 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:28:43 +09:00
Hector Martin
a5a974791b hv: Support handling GL2 exceptions 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:28:43 +09:00
Hector Martin
b1e09ad509 exception,gxf: Turn off PAN on exception entry 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:11:14 +09:00
Hector Martin
aa72f50e50 iodev: Do not print leading * for empty buffer prints on alt path 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:10:00 +09:00
Hector Martin
0786894201 uart: Add uart_printf() 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:09:48 +09:00
Hector Martin
532b43f0a4 utils: debug_printf: Use vsnprintf instead of vsprintf 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-27 21:09:15 +09:00
Hector Martin
81808da562 hv_exc: Set the step timer to 100 cycles 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
e92e075fba hv_exc: Add IPI and guest timer FIQ virtualization 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
75f206e65c hv_exc, hv.py: Add support for interrupting guest with ^C 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
1ce8d8b706 hv: Add hv_write_hcr() to handle GXF 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
2e014f58fa hv: Implement a periodic hypervisor ptimer and use vtimer for stepping 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
76c283deba hv_vm: Delay after sync mmiotrace events 
This allows the USB hardware to get a chance to deliver the packets to
the host, in case the poke would break it.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
1b1653dfe9 hv_vm: Simplify r31 handling, move LR adjustment to hv_exc.c 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
48c7fc725b cpu_regs.h: Add IPI and VM timer reg defines 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
e484d6df70 cpu_regs.h: Add Apple-defined exception types 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
b1f55015eb arm_cpu_regs.h: Add sysreg exception ISS bit defines 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
74b8863a7f arm_cpu_regs.h: Add timer bit defines 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
e99680cb1e hv: Rename HV_HOOK proxy start type to HV 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 20:12:20 +09:00
Hector Martin
25f4500cea utils.h: Do sysreg defines in a way that allows extracting the fields 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 19:51:08 +09:00
Hector Martin
0192bd6617 gxf: Add gxf_enabled() 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-25 19:49:12 +09:00
Hector Martin
aacbdf0949 GXF_STATUS -> GXF_STATUS_EL1 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-22 04:42:38 +09:00
Hector Martin
09cdebf08b gxf: Don't try to touch HCR_EL2 if GXF is enabled 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-22 03:21:01 +09:00
Hector Martin
76dca8c891 memory: Unbork EL0 execution 
We need to make m1n1 itself EL0-executable.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-22 02:48:17 +09:00
Hector Martin
da440672a8 uartproxy: Send events without copying data to a giant buffer 
We don't have 64K of stack.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-16 19:04:51 +09:00
Hector Martin
7abebaec88 iodev: Add iodev_queue() API to queue data without kicking transmission 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-16 19:04:51 +09:00
Mark Kettenis
9604907b2d pcie: minimal initialization 
Minimal initialization of the PCIe hardware such that the tunable
can be applied such that they don't have to be passed along in
the devicetree.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
 2021-05-16 02:43:44 +09:00
Hector Martin
28ab4e1611 hv_vm: Handle load/store instructions with update 
These don't get instruction syndromes, so we need to stop relying on
that to determine the access size.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 23:57:48 +09:00
Hector Martin
afc088840d hv: Add Python-side MMIO emulation hooks 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 23:57:48 +09:00
Hector Martin
323b02ce1d hv: Implement basic MMIO tracing to Python 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 23:57:48 +09:00
Hector Martin
a1f6b2502a usb_dwc3: Send a ZLP after multiple-of-512 transfers 
This fixes the stalling issue with readmem() of a multiple of 512 bytes.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 21:47:22 +09:00
Hector Martin
57708b529f usb_dwc3: Change xfer_in_progress to a bool 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 21:47:22 +09:00
Hector Martin
58489bf72c iodev, usb: Add flush() call to flush buffers to the host 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 21:47:22 +09:00
Hector Martin
67c7043b9a utils: In EL1, instead of rebooting, break into HV 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 20:42:50 +09:00
Hector Martin
03b70eed94 hv_vm: Move dprintf macro to utils.h, add more debugging 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 20:38:32 +09:00
Hector Martin
3de3b54b7e hv_asm: Restore all registers on return to guest 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 20:36:39 +09:00
Janne Grunau
a742f05532 usb/hv: add second CDC ACM interface for virtualized UART 
Signed-off-by: Janne Grunau <j@jannau.net>
 2021-05-15 19:47:08 +09:00
Sven Peter
4a893dc57a apple_regs: document more SPRR regs 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-05-15 16:38:45 +09:00
Hector Martin
5d3f154d0f hv_vm: Correctly split software mapped L2 blocks 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 01:28:44 +09:00
Hector Martin
bf34611bf4 hv_vm: Add out-of-bounds IPA check 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 01:15:17 +09:00
Hector Martin
e919b63a02 hv_vm: Add register-offset LDR/STR emulation, fix bugs 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-15 00:43:39 +09:00
Hector Martin
1a5ba2c67e hv_vm: Fix bad asserts 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-14 21:49:11 +09:00
Hector Martin
920ff59483 exception: Unbork EL1 stack 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-13 21:14:58 +09:00
Hector Martin
9efa91bf87 gxf: Do not disable the MMU around GXF calls 
We are now SPRR compatible.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-13 18:31:27 +09:00
Hector Martin
b9ed00c6f3 memory: Initialize SPRR permissions 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-13 18:16:56 +09:00
Hector Martin
8af8dadee1 memory: Support L3 mappings, map m1n1 code as RX. 
This replaces the old pagetable code with an adapted version of what
hv_vm.c does, which can handle block and page mappings more
intelligently.

Then, map the m1n1 code section as RX. This allows us to work in modes
where W^X is enforced.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-13 18:14:31 +09:00
Hector Martin
3e1ea2d503 memory: Add separate mappings for EL0 data access 
This unborks stack and constant pool accesses from el0_call.

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-13 17:36:02 +09:00
Hector Martin
7685800b45 heapblock: Assert if not initialized 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-13 17:33:57 +09:00
Hector Martin
9ffab4ac98 hv_vm.c: Remove stray ; 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-13 17:33:48 +09:00
Sven Peter
1c604a77c5 gxf: add support for guarded exception levels 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-05-11 15:48:40 +09:00
Sven Peter
9120cb8426 memory: allow to reinit and temporarily disable the MMU 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-05-11 15:48:40 +09:00
Sven Peter
b00c5e6522 utils.h: add msr_sync convenience macros 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-05-11 15:48:40 +09:00
Sven Peter
36efdd2ac3 allow cpu_regs.h to be included in .S files 
Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-05-11 15:48:40 +09:00
Sven Peter
813e40f4ca exception_asm.S: skip msr hcr_el2 if not required 
When guarded exception levels are enabled hcr_el2 can no longer be written to from EL2.
A future commit will however use el1_call to jump to GL1. It will setup hcr_el2 before
enabling GXF such that the write doesn't have to happen in el1_call anymore

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-05-11 15:48:40 +09:00
Sven Peter
148fe31122 exception_asm.S: correctly setup sp for EL1 
The previous code switched SPSel to EL0 but then used eret to
jump to EL1h which uses SP_EL1 instead

Signed-off-by: Sven Peter <sven@svenpeter.dev>
 2021-05-11 15:48:40 +09:00
Hector Martin
ed32cf6328 hv_exc: Add a hacky STEP feature to interrupt guest after a while 
This should eventually be a proper single step feature or something, but
for now...

Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-09 03:25:51 +09:00
Hector Martin
bcdafe8d00 hv_vm: Short-circuit hv_translate when MMU is off 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-09 03:25:51 +09:00
Hector Martin
8d5596a1a1 hv_vm: Fix bug when making L2 mappings 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-09 03:25:51 +09:00
Hector Martin
52823eaab6 hv_asm: Turn off PAN on exception entry 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-09 03:25:51 +09:00
Hector Martin
4c043a0f97 memory: Move SCTLR/TCR defines to arm_cpu_regs.h 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-09 03:25:51 +09:00
Hector Martin
0203aa6d3d proxy: Add framebuffer ops 
Signed-off-by: Hector Martin <marcan@marcan.st>
 2021-05-08 03:42:21 +09:00
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