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authorJason Thorpe <thorpej@me.com>2021-06-13 14:15:49 -0700
committerRichard Henderson <richard.henderson@linaro.org>2021-06-28 07:27:32 -0700
commit387a1dcb351be6a6ec4e27d36173df2de1017bcc (patch)
tree0ebe0522e60a165fe705b97dd40981a09fa653ac /hw/alpha/dp264.c
parent3a8233dc1fe2fb5d0b51c9ae895e27b96a6d830e (diff)
hw/alpha: Provide console information to the PALcode at start-up
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 <thorpej@me.com> Message-Id: <20210613211549.18094-5-thorpej@me.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'hw/alpha/dp264.c')
-rw-r--r--hw/alpha/dp264.c12
1 files changed, 11 insertions, 1 deletions
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,