Boot failure after QEMU's upgrade to OpenSBI v1.3 (was Re: [PATCH for-8.2 6/7] target/riscv: add 'max' CPU type)

[Conor Dooley]

On Wed, Jul 19, 2023 at 11:32:55AM +1000, Alistair Francis wrote:

> If there is no OpenSBI 1.3.1 release we should add something to the
> release notes. @Conor Dooley are you able to give a clear sentence on
> how the boot fails?

Uhh, I'll give it a shot, but hopefully it is not required :)

In version v1.3, OpenSBI's aclint drivers fail to initialise if they
encounter a disabled CPU node in the devicetree. Attempting to boot
using, for example, the Linux kernel's PolarFire SoC or Freedom U540
devicetrees, will fail with the error:
"init_coldboot: ipi init failed (error -1009)"
Please see OpenSBI commit c6a3573 ("lib: utils: Fix sbi_hartid_to_scratch()
usage in ACLINT drivers")
<https://github.com/riscv-software-src/opensbi/commit/c6a35733b74aeff612398f274ed19a74f81d1f37>
for the fix.

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