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A7-A11 SoC support #403

Merged
merged 19 commits into from
Oct 30, 2024
Merged

A7-A11 SoC support #403

merged 19 commits into from
Oct 30, 2024

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asdfugil
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Add support for A7-A11 SoCs found in various iPhones, iPads, iPod touches and Apple TVs.

@asdfugil asdfugil force-pushed the for-upstream branch 8 times, most recently from c755e18 to 9f3f2f0 Compare September 24, 2024 07:55
marcan
marcan requested changes Sep 24, 2024
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@asdfugil asdfugil force-pushed the for-upstream branch 2 times, most recently from 22fe601 to a9c572f Compare September 26, 2024 13:28
@asdfugil
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asdfugil commented Sep 26, 2024 •
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Changes:

  • Register names are now upper cased
  • EL3 stack is now before main stack, and does not have STACKBOT magic anymore.
  • is_idevice() is replaced by is_mac, cpufeat_fast_ipi and cpufeat_mmu_sprr, or removed entirely when not needed.
    • supports_fipi() removed as well
  • Use macros like S5L8960X for all chip_id comparisons
  • For SMP start offset macros, always use the first SoC with that offset in the macro name.
  • PAN in exception handler now remains unchanged in code but get patched to NOP during init on non-PAN devices.
  • Use common code to parse iBoot versions
  • Add comma to EL list to keep format sane

@asdfugil asdfugil force-pushed the for-upstream branch 2 times, most recently from aa9d2f3 to 2a7f9ef Compare September 30, 2024 07:35
@asdfugil asdfugil force-pushed the for-upstream branch 5 times, most recently from 8a5b70c to 7f56988 Compare October 9, 2024 14:04
asdfugil added 11 commits October 13, 2024 19:11
@asdfugil
soc: Added UART bases for A7-A11, T2 SoCs.
4ffba85 
Add UART bases for A7-A11, T2 SoCs.

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
utils: Add more functions to detect CPU features
66d99ca 
These functions will be used to skip over parts not supported by A7-A11 SoCs.

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
chickens: Add A7-A11 chickens
f465515 
Cyclone and Typhoon are similar enough to share a file.

Hurricane and Zephyr are the physical cores on A10 backing the
Hurricane-Zephyr logical core.

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
Add support for handling EL3.
9971969 
A7-A9X has an EL3. Handle it (without SMP support).

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
Skip over features unsupported in A7-A11 SoCs.
1dd3e98 
This includes
- GXF
- SPRR
- PAN (A7-A9)
- Atomics (A7-A10)
- FIPI (A7-A10)
- DCP

SPRR on T8030 seems to be quite different from M1 (at least according to
qemu-t8030), so keep it disabled for those CPU parts.

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
Add support for different boot-args revisions.
ad70120 
Boot-args version 1 (iOS 12), and version 3 (iOS 18, macOS 15).

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
memory: Add support for 4K translation
8777b72 
Add support for 4K page sizes, supported by A7-A8X.

Co-developed-by: fenfenS <[email protected]>
Signed-off-by: fenfenS <[email protected]>
Signed-off-by: Nick Chan <[email protected]>
@asdfugil
smp: Added A7-A11 start support
6a1e952 
This includes:

- EL3 handling
- "Slow" IPI support
- New start offsets

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
smp: Add support for ADT from old FW
6520e97 
Old ADT does not have /cpus/cpu<n>/cpu-impl-reg, and the value is in
/arm-io/pmgr/reg[2*n+2].

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
smp: Write _vectors_start into boot CPU rvbar where possible
e792b5c 
On A7-A11 we have a ROM exploit and we can keep CPU0 RVBAR unlocked.

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
smp: Add support for deep sleep on A7-A9X
f40293c 
Signed-off-by: Nick Chan <[email protected]>
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Changes v3:

  • Fixed PMGR on A7-A11 SoCs. These SoC uses a struct layout that has 8-bit device IDs. Seems like at some point between A11 and M1 Apple needs more than 255 devices and switched to 16-bit device IDs.
  • Apple TV HD debug uart is uart6, so account for that
  • Add A7-A9 cache errata workaround
  • Introduce el3_call()
  • Fixed el0_call() and el1_call() when running in EL1

@asdfugil
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asdfugil commented Oct 13, 2024 •
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(... for the proxyclient changes that needs to exist to actually interface with m1n1, I don't have anything that looks remotely okay it's all ugly hacks)

@asdfugil
smp: Add A7-A9X cache errata workaround
2acf509 
Signed-off-by: Nick Chan <[email protected]>
@asdfugil
fb: Add A7-A11 device support
2d75ecf 
This includes:
- Do not treat iPhone 5 buffer as dummy on 5s
- Added support for 24-bit framebuffer
- When we have a vertical display, use whole fb as console

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
kboot: Add workarounds for ADT for A7-A11 SoCs.
fe82437 
Account for the differences between the iOS ADT and macOS ADT, and also
some physical differences between Apple Silicon Macs and A7-A11 devoces,
reflected in the ADT.

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
kboot: Reserve secondary CPU stacks
682705b 
The secondary CPU may potentially use the stack after leaving WFE.

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
exceptions: fix el0_call() and el1_call() when running in EL1
4d813ae 
Signed-off-by: Nick Chan <[email protected]>
@asdfugil
exceptions: add el3_call()
0641be9 
Signed-off-by: Nick Chan <[email protected]>
@asdfugil
pmgr: Fix struct for older SoCs
956acd4 
At some point Apple ran out of bits and have to widen the device field
to 16-bit. This adds support for the old 8-bit layout.

Signed-off-by: Nick Chan <[email protected]>
@asdfugil
usb: Skip USB init for now on A7-A11 SoCs.
6a40eef 
We do not support the USB controller on A7-A11 SoCs yet, but still do not
try to init dwc3 on them.

Signed-off-by: Nick Chan <[email protected]>
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marcan commented Oct 30, 2024

Let's merge, if there are any issues we'll fix as we go along. Thanks!

@marcan marcan merged commit 4bde778 into AsahiLinux:main Oct 30, 2024
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@marcan marcan mentioned this pull request Oct 30, 2024
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@asdfugil @marcan