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216 commits

Author SHA1 Message Date
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