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hw/mips/jazz: Correct CPU frequencies 

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>
This commit is contained in:
Philippe Mathieu-Daudé 2020-10-12 11:57:59 +02:00
parent 8543a80691
commit 79b99fe3f0
1 changed files with 14 additions and 1 deletions
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15
hw/mips/jazz.c
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@ -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);