diff options
| author | Jason Thorpe <thorpej@me.com> | 2021-06-13 14:15:49 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-06-28 07:27:32 -0700 |
| commit | 387a1dcb351be6a6ec4e27d36173df2de1017bcc (patch) | |
| tree | 0ebe0522e60a165fe705b97dd40981a09fa653ac /hw/alpha | |
| parent | 3a8233dc1fe2fb5d0b51c9ae895e27b96a6d830e (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')
| -rw-r--r-- | hw/alpha/dp264.c | 12 |
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, |