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qemu-patch-raspberry4/hw/arm/fsl-imx31.c
Jean-Christophe Dubois 66542f6399 i.MX: split the GPT timer implementation into per SOC definitions 
In various Freescale SOCs, the GPT timers can be configured to select
its input clock.

Depending on the SOC the set of available input clocks may vary.

The actual single GPT definition was no good enough and because of it
booting the sabrelite board with a i.MX6DL device tree would fail
because of an incorrect input clock definition for the i.MX6DL SOC.

This patch fixes the i.MX6DL boot failure by adding the ability to
define a different set of input clocks depending on the considered SOC.

A different class has been defined for i.MX25, i.MX31 and i.MX6 each with
its specific set of input clocks.

The patch has been tested by booting KZM, i.MX25 PDK, i.MX6Q sabrelite
and i.MX6DL sabrelite.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 1467325619-8374-1-git-send-email-jcd@tribudubois.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: fixed spacing round '/' operator]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-07 13:47:01 +01:00

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/*
* Copyright (c) 2013 Jean-Christophe Dubois <jcd@tribudubois.net>
*
* i.MX31 SOC emulation.
*
* Based on hw/arm/fsl-imx31.c
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu-common.h"
#include "cpu.h"
#include "hw/arm/fsl-imx31.h"
#include "sysemu/sysemu.h"
#include "exec/address-spaces.h"
#include "hw/boards.h"
#include "sysemu/char.h"
static void fsl_imx31_init(Object *obj)
{
FslIMX31State *s = FSL_IMX31(obj);
int i;
object_initialize(&s->cpu, sizeof(s->cpu), "arm1136-" TYPE_ARM_CPU);
object_initialize(&s->avic, sizeof(s->avic), TYPE_IMX_AVIC);
qdev_set_parent_bus(DEVICE(&s->avic), sysbus_get_default());
object_initialize(&s->ccm, sizeof(s->ccm), TYPE_IMX31_CCM);
qdev_set_parent_bus(DEVICE(&s->ccm), sysbus_get_default());
for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) {
object_initialize(&s->uart[i], sizeof(s->uart[i]), TYPE_IMX_SERIAL);
qdev_set_parent_bus(DEVICE(&s->uart[i]), sysbus_get_default());
}
object_initialize(&s->gpt, sizeof(s->gpt), TYPE_IMX31_GPT);
qdev_set_parent_bus(DEVICE(&s->gpt), sysbus_get_default());
for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) {
object_initialize(&s->epit[i], sizeof(s->epit[i]), TYPE_IMX_EPIT);
qdev_set_parent_bus(DEVICE(&s->epit[i]), sysbus_get_default());
}
for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) {
object_initialize(&s->i2c[i], sizeof(s->i2c[i]), TYPE_IMX_I2C);
qdev_set_parent_bus(DEVICE(&s->i2c[i]), sysbus_get_default());
}
for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) {
object_initialize(&s->gpio[i], sizeof(s->gpio[i]), TYPE_IMX_GPIO);
qdev_set_parent_bus(DEVICE(&s->gpio[i]), sysbus_get_default());
}
}
static void fsl_imx31_realize(DeviceState *dev, Error **errp)
{
FslIMX31State *s = FSL_IMX31(dev);
uint16_t i;
Error *err = NULL;
object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_set_bool(OBJECT(&s->avic), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->avic), 0, FSL_IMX31_AVIC_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 0,
qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 1,
qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ));
object_property_set_bool(OBJECT(&s->ccm), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccm), 0, FSL_IMX31_CCM_ADDR);
/* Initialize all UARTS */
for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} serial_table[FSL_IMX31_NUM_UARTS] = {
{ FSL_IMX31_UART1_ADDR, FSL_IMX31_UART1_IRQ },
{ FSL_IMX31_UART2_ADDR, FSL_IMX31_UART2_IRQ },
};
if (i < MAX_SERIAL_PORTS) {
CharDriverState *chr;
chr = serial_hds[i];
if (!chr) {
char label[20];
snprintf(label, sizeof(label), "imx31.uart%d", i);
chr = qemu_chr_new(label, "null", NULL);
}
qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", chr);
}
object_property_set_bool(OBJECT(&s->uart[i]), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->uart[i]), 0, serial_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
serial_table[i].irq));
}
s->gpt.ccm = IMX_CCM(&s->ccm);
object_property_set_bool(OBJECT(&s->gpt), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpt), 0, FSL_IMX31_GPT_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpt), 0,
qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX31_GPT_IRQ));
/* Initialize all EPIT timers */
for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} epit_table[FSL_IMX31_NUM_EPITS] = {
{ FSL_IMX31_EPIT1_ADDR, FSL_IMX31_EPIT1_IRQ },
{ FSL_IMX31_EPIT2_ADDR, FSL_IMX31_EPIT2_IRQ },
};
s->epit[i].ccm = IMX_CCM(&s->ccm);
object_property_set_bool(OBJECT(&s->epit[i]), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->epit[i]), 0, epit_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->epit[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
epit_table[i].irq));
}
/* Initialize all I2C */
for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} i2c_table[FSL_IMX31_NUM_I2CS] = {
{ FSL_IMX31_I2C1_ADDR, FSL_IMX31_I2C1_IRQ },
{ FSL_IMX31_I2C2_ADDR, FSL_IMX31_I2C2_IRQ },
{ FSL_IMX31_I2C3_ADDR, FSL_IMX31_I2C3_IRQ }
};
/* Initialize the I2C */
object_property_set_bool(OBJECT(&s->i2c[i]), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
/* Map I2C memory */
sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c[i]), 0, i2c_table[i].addr);
/* Connect I2C IRQ to PIC */
sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
i2c_table[i].irq));
}
/* Initialize all GPIOs */
for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} gpio_table[FSL_IMX31_NUM_GPIOS] = {
{ FSL_IMX31_GPIO1_ADDR, FSL_IMX31_GPIO1_IRQ },
{ FSL_IMX31_GPIO2_ADDR, FSL_IMX31_GPIO2_IRQ },
{ FSL_IMX31_GPIO3_ADDR, FSL_IMX31_GPIO3_IRQ }
};
object_property_set_bool(OBJECT(&s->gpio[i]), false, "has-edge-sel",
&error_abort);
object_property_set_bool(OBJECT(&s->gpio[i]), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio[i]), 0, gpio_table[i].addr);
/* Connect GPIO IRQ to PIC */
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
gpio_table[i].irq));
}
/* On a real system, the first 16k is a `secure boot rom' */
memory_region_init_rom(&s->secure_rom, NULL, "imx31.secure_rom",
FSL_IMX31_SECURE_ROM_SIZE, &err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX31_SECURE_ROM_ADDR,
&s->secure_rom);
/* There is also a 16k ROM */
memory_region_init_rom(&s->rom, NULL, "imx31.rom",
FSL_IMX31_ROM_SIZE, &err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX31_ROM_ADDR,
&s->rom);
/* initialize internal RAM (16 KB) */
memory_region_init_ram(&s->iram, NULL, "imx31.iram", FSL_IMX31_IRAM_SIZE,
&err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ADDR,
&s->iram);
vmstate_register_ram_global(&s->iram);
/* internal RAM (16 KB) is aliased over 256 MB - 16 KB */
memory_region_init_alias(&s->iram_alias, NULL, "imx31.iram_alias",
&s->iram, 0, FSL_IMX31_IRAM_ALIAS_SIZE);
memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ALIAS_ADDR,
&s->iram_alias);
}
static void fsl_imx31_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = fsl_imx31_realize;
/*
* Reason: creates an ARM CPU, thus use after free(), see
* arm_cpu_class_init()
*/
dc->cannot_destroy_with_object_finalize_yet = true;
dc->desc = "i.MX31 SOC";
}
static const TypeInfo fsl_imx31_type_info = {
.name = TYPE_FSL_IMX31,
.parent = TYPE_DEVICE,
.instance_size = sizeof(FslIMX31State),
.instance_init = fsl_imx31_init,
.class_init = fsl_imx31_class_init,
};
static void fsl_imx31_register_types(void)
{
type_register_static(&fsl_imx31_type_info);
}
type_init(fsl_imx31_register_types)
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