From 79b99fe3f09979b6ba0a8d9f4603dc43e7e066c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <f4bug@amsat.org>
Date: Mon, 12 Oct 2020 11:57:59 +0200
Subject: [PATCH] hw/mips/jazz: Correct CPU frequencies
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The Magnum 4000PC CPU runs at 100 MHz, and the Acer PICA-61
CPU at ~134 MHz.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20201012095804.3335117-17-f4bug@amsat.org>
---
 hw/mips/jazz.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/hw/mips/jazz.c b/hw/mips/jazz.c
index 47723093b6..8f1ad55ba3 100644
--- a/hw/mips/jazz.c
+++ b/hw/mips/jazz.c
@@ -24,6 +24,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu-common.h"
+#include "hw/clock.h"
 #include "hw/mips/mips.h"
 #include "hw/mips/cpudevs.h"
 #include "hw/intc/i8259.h"
@@ -142,6 +143,7 @@ static void mips_jazz_init(MachineState *machine,
     MemoryRegion *address_space = get_system_memory();
     char *filename;
     int bios_size, n;
+    Clock *cpuclk;
     MIPSCPU *cpu;
     CPUClass *cc;
     CPUMIPSState *env;
@@ -163,14 +165,25 @@ static void mips_jazz_init(MachineState *machine,
     MemoryRegion *bios2 = g_new(MemoryRegion, 1);
     SysBusESPState *sysbus_esp;
     ESPState *esp;
+    static const struct {
+        unsigned freq_hz;
+        unsigned pll_mult;
+    } ext_clk[] = {
+        [JAZZ_MAGNUM] = {50000000, 2},
+        [JAZZ_PICA61] = {33333333, 4},
+    };
 
     if (machine->ram_size > 256 * MiB) {
         error_report("RAM size more than 256Mb is not supported");
         exit(EXIT_FAILURE);
     }
 
+    cpuclk = clock_new(OBJECT(machine), "cpu-refclk");
+    clock_set_hz(cpuclk, ext_clk[jazz_model].freq_hz
+                         * ext_clk[jazz_model].pll_mult);
+
     /* init CPUs */
-    cpu = MIPS_CPU(cpu_create(machine->cpu_type));
+    cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk);
     env = &cpu->env;
     qemu_register_reset(main_cpu_reset, cpu);