qemu/hw/arm/cubieboard.c
Beniamino Galvani 286226a479 allwinner-a10-pit: implement prescaler and source selection
This implements the prescaler and source fields of the timer control
register. The source for each timer can be selected among 4 clock
inputs whose frequencies are set through model properties.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1395771730-16882-6-git-send-email-b.galvani@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-04-17 21:34:06 +01:00

90 lines
2.7 KiB
C

/*
* cubieboard emulation
*
* Copyright (C) 2013 Li Guang
* Written by Li Guang <lig.fnst@cn.fujitsu.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "hw/sysbus.h"
#include "hw/devices.h"
#include "hw/boards.h"
#include "hw/arm/allwinner-a10.h"
static struct arm_boot_info cubieboard_binfo = {
.loader_start = AW_A10_SDRAM_BASE,
.board_id = 0x1008,
};
typedef struct CubieBoardState {
AwA10State *a10;
MemoryRegion sdram;
} CubieBoardState;
static void cubieboard_init(QEMUMachineInitArgs *args)
{
CubieBoardState *s = g_new(CubieBoardState, 1);
Error *err = NULL;
s->a10 = AW_A10(object_new(TYPE_AW_A10));
object_property_set_int(OBJECT(&s->a10->emac), 1, "phy-addr", &err);
if (err != NULL) {
error_report("Couldn't set phy address: %s", error_get_pretty(err));
exit(1);
}
object_property_set_int(OBJECT(&s->a10->timer), 32768, "clk0-freq", &err);
if (err != NULL) {
error_report("Couldn't set clk0 frequency: %s", error_get_pretty(err));
exit(1);
}
object_property_set_int(OBJECT(&s->a10->timer), 24000000, "clk1-freq",
&err);
if (err != NULL) {
error_report("Couldn't set clk1 frequency: %s", error_get_pretty(err));
exit(1);
}
object_property_set_bool(OBJECT(s->a10), true, "realized", &err);
if (err != NULL) {
error_report("Couldn't realize Allwinner A10: %s",
error_get_pretty(err));
exit(1);
}
memory_region_init_ram(&s->sdram, NULL, "cubieboard.ram", args->ram_size);
vmstate_register_ram_global(&s->sdram);
memory_region_add_subregion(get_system_memory(), AW_A10_SDRAM_BASE,
&s->sdram);
cubieboard_binfo.ram_size = args->ram_size;
cubieboard_binfo.kernel_filename = args->kernel_filename;
cubieboard_binfo.kernel_cmdline = args->kernel_cmdline;
arm_load_kernel(&s->a10->cpu, &cubieboard_binfo);
}
static QEMUMachine cubieboard_machine = {
.name = "cubieboard",
.desc = "cubietech cubieboard",
.init = cubieboard_init,
};
static void cubieboard_machine_init(void)
{
qemu_register_machine(&cubieboard_machine);
}
machine_init(cubieboard_machine_init)