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authorAlistair Francis <alistair.francis@wdc.com>2021-08-30 15:34:49 +1000
committerAlistair Francis <alistair.francis@wdc.com>2021-09-21 07:56:49 +1000
commite5cc6aaeb51dd0d80e1f5a6d6a6808d6355958aa (patch)
treef4cea728c25c7f0d734a49ed04de9d88314aa110 /hw/riscv/opentitan.c
parenta714b8aa029c2a6cc0b99a798f4f8b6d4282e711 (diff)
downloadfocaccia-qemu-e5cc6aaeb51dd0d80e1f5a6d6a6808d6355958aa.tar.gz
focaccia-qemu-e5cc6aaeb51dd0d80e1f5a6d6a6808d6355958aa.zip
hw/intc: ibex_plic: Convert the PLIC to use RISC-V CPU GPIO lines
Instead of using riscv_cpu_update_mip() let's instead use the new RISC-V
CPU GPIO lines to set the external MIP bits.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 0a76946981852f5bd15f0c37ab35b253371027a8.1630301632.git.alistair.francis@wdc.com
Diffstat (limited to 'hw/riscv/opentitan.c')
-rw-r--r--hw/riscv/opentitan.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
index 36a41c8b5b..048aced0ec 100644
--- a/hw/riscv/opentitan.c
+++ b/hw/riscv/opentitan.c
@@ -118,6 +118,7 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
     MachineState *ms = MACHINE(qdev_get_machine());
     LowRISCIbexSoCState *s = RISCV_IBEX_SOC(dev_soc);
     MemoryRegion *sys_mem = get_system_memory();
+    int i;
 
     object_property_set_str(OBJECT(&s->cpus), "cpu-type", ms->cpu_type,
                             &error_abort);
@@ -149,6 +150,13 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
     }
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->plic), 0, memmap[IBEX_DEV_PLIC].base);
 
+    for (i = 0; i < ms->smp.cpus; i++) {
+        CPUState *cpu = qemu_get_cpu(i);
+
+        qdev_connect_gpio_out(DEVICE(&s->plic), i,
+                              qdev_get_gpio_in(DEVICE(cpu), IRQ_M_EXT));
+    }
+
     /* UART */
     qdev_prop_set_chr(DEVICE(&(s->uart)), "chardev", serial_hd(0));
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart), errp)) {