From: Jason Thorpe <thor...@me.com>
Redefine the a2 register passed by Qemu at start-up to also include
some configuration flags, in addition to the CPU count, and define
a flag to mirror the "-nographic" option.
Signed-off-by: Jason Thorpe <thor...@me.com>
Message-Id: <20210613211549.18094-5-thor...@me.com>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
hw/alpha/dp264.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/hw/alpha/dp264.c b/hw/alpha/dp264.c
index 010d22476b..316f0691cd 100644
--- a/hw/alpha/dp264.c
+++ b/hw/alpha/dp264.c
@@ -72,9 +72,19 @@ static void clipper_init(MachineState *machine)
cpus[i] = ALPHA_CPU(cpu_create(machine->cpu_type));
}
+ /*
+ * arg0 -> memory size
+ * arg1 -> kernel entry point
+ * arg2 -> config word
+ *
+ * Config word: bits 0-5 -> ncpus
+ * bit 6 -> nographics option (for HWRPB CTB)
+ *
+ * See init_hwrpb() in the PALcode.
+ */
cpus[0]->env.trap_arg0 = ram_size;
cpus[0]->env.trap_arg1 = 0;
- cpus[0]->env.trap_arg2 = smp_cpus;
+ cpus[0]->env.trap_arg2 = smp_cpus | (!machine->enable_graphics << 6);
/*
* Init the chipset. Because we're using CLIPPER IRQ mappings,
--
2.25.1
