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[PATCH 4/4] alpha: Provide console information to the PALcode at start-u
From: |
Jason Thorpe |
Subject: |
[PATCH 4/4] alpha: Provide console information to the PALcode at start-up. |
Date: |
Sun, 13 Jun 2021 14:15:49 -0700 |
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 "-nographics" option.
Signed-off-by: Jason Thorpe <thorpej@me.com>
---
hw/alpha/dp264.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/hw/alpha/dp264.c b/hw/alpha/dp264.c
index ac97104464..d86dcb1d81 100644
--- a/hw/alpha/dp264.c
+++ b/hw/alpha/dp264.c
@@ -72,9 +72,20 @@ 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;
+ if (!machine->enable_graphics)
+ cpus[0]->env.trap_arg2 |= (1 << 6);
/* Init the chipset. Because we're using CLIPPER IRQ mappings,
the minimum PCI device IdSel is 1. */
--
2.30.2
[PATCH 4/4] alpha: Provide console information to the PALcode at start-up.,
Jason Thorpe <=
Re: [PATCH 0/4] Emulator fixes to enable running NetBSD/alpha, no-reply, 2021/06/14