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hw/nios2: Machine with a Vectored Interrupt Controller

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Demonstrate how to use nios2 VIC on a machine.
Introduce a new machine property to attach a VIC.

When VIC is present, let the CPU know that it should use the
External Interrupt Interface instead of the Internal Interrupt Interface.
The devices on the machine are attached to the VIC and not directly to cpu.
To allow VIC update EIC fields, we set the "cpu" property of the VIC
with a reference to the nios2 cpu.

[rth: Put a property on the 10m50-ghrd machine, rather than
      create a new machine class.]

Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Amir Gonnen <amir.gonnen@neuroblade.ai>
Message-Id: <20220303153906.2024748-6-amir.gonnen@neuroblade.ai>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-63-richard.henderson@linaro.org>
This commit is contained in:
Amir Gonnen 2022-04-21 08:17:33 -07:00 • committed by Richard Henderson
parent e734cedf11
commit 28a3c1b5f1
2 changed files with 53 additions and 9 deletions
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hw/nios2/Kconfig
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@ -3,6 +3,7 @@ config NIOS2_10M50
select NIOS2
select SERIAL
select ALTERA_TIMER
select NIOS2_VIC
config NIOS2_GENERIC_NOMMU
bool