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294 commits

Author SHA1 Message Date
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
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