diff options
| author | Conor Dooley <conor.dooley@microchip.com> | 2022-11-17 22:55:18 +0000 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2023-01-06 10:42:55 +1000 |
| commit | 592f0a9429b924bc7eec0aee60afa391f7ca96b2 (patch) | |
| tree | 8f45f7eb4fb33777a84712a1b33ddc0ddb4a9c2f /hw/riscv | |
| parent | 8d32e374a805976c622ed58073015eaf2e6859dc (diff) | |
hw/{misc, riscv}: pfsoc: add system controller as unimplemented
The system controller on PolarFire SoC is access via a mailbox. The
control registers for this mailbox lie in the "IOSCB" region & the
interrupt is cleared via write to the "SYSREG" region. It also has a
QSPI controller, usually connected to a flash chip, that is used for
storing FPGA bitstreams and used for In-Application Programming (IAP).
Linux has an implementation of the system controller, through which the
hwrng is accessed, leading to load/store access faults.
Add the QSPI as unimplemented and a very basic (effectively
unimplemented) version of the system controller's mailbox. Rather than
purely marking the regions as unimplemented, service the mailbox
requests by reporting failures and raising the interrupt so a guest can
better handle the lack of support.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20221117225518.4102575-4-conor@kernel.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'hw/riscv')
| -rw-r--r-- | hw/riscv/microchip_pfsoc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c index 2a24e3437a..b10321b564 100644 --- a/hw/riscv/microchip_pfsoc.c +++ b/hw/riscv/microchip_pfsoc.c @@ -306,6 +306,9 @@ static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp) sysbus_realize(SYS_BUS_DEVICE(&s->sysreg), errp); sysbus_mmio_map(SYS_BUS_DEVICE(&s->sysreg), 0, memmap[MICROCHIP_PFSOC_SYSREG].base); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->sysreg), 0, + qdev_get_gpio_in(DEVICE(s->plic), + MICROCHIP_PFSOC_MAILBOX_IRQ)); /* AXISW */ create_unimplemented_device("microchip.pfsoc.axisw", @@ -459,6 +462,9 @@ static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp) sysbus_realize(SYS_BUS_DEVICE(&s->ioscb), errp); sysbus_mmio_map(SYS_BUS_DEVICE(&s->ioscb), 0, memmap[MICROCHIP_PFSOC_IOSCB].base); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->ioscb), 0, + qdev_get_gpio_in(DEVICE(s->plic), + MICROCHIP_PFSOC_MAILBOX_IRQ)); /* FPGA Fabric */ create_unimplemented_device("microchip.pfsoc.fabricfic3", |