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qemu/hw/arm/fsl-imx25.c
Martin Kaiser f03965490e i.MX: add an emulation for RNGC 
Add an emulation for the RNGC random number generator and the compatible
RNGB variant. These peripherals are included (at least) in imx25 and
imx35 chipsets.

The emulation supports the initial self test, reseeding the prng and
reading random numbers.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-17 14:27:16 +00:00

311 lines
11 KiB
C
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/*
* Copyright (c) 2013 Jean-Christophe Dubois <jcd@tribudubois.net>
*
* i.MX25 SOC emulation.
*
* Based on hw/arm/xlnx-zynqmp.c
*
* Copyright (C) 2015 Xilinx Inc
* Written by Peter Crosthwaite <peter.crosthwaite@xilinx.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.
*
* 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 "cpu.h"
#include "hw/arm/fsl-imx25.h"
#include "sysemu/sysemu.h"
#include "exec/address-spaces.h"
#include "hw/qdev-properties.h"
#include "chardev/char.h"
static void fsl_imx25_init(Object *obj)
{
FslIMX25State *s = FSL_IMX25(obj);
int i;
object_initialize_child(obj, "cpu", &s->cpu, sizeof(s->cpu),
ARM_CPU_TYPE_NAME("arm926"),
&error_abort, NULL);
sysbus_init_child_obj(obj, "avic", &s->avic, sizeof(s->avic),
TYPE_IMX_AVIC);
sysbus_init_child_obj(obj, "ccm", &s->ccm, sizeof(s->ccm), TYPE_IMX25_CCM);
for (i = 0; i < FSL_IMX25_NUM_UARTS; i++) {
sysbus_init_child_obj(obj, "uart[*]", &s->uart[i], sizeof(s->uart[i]),
TYPE_IMX_SERIAL);
}
for (i = 0; i < FSL_IMX25_NUM_GPTS; i++) {
sysbus_init_child_obj(obj, "gpt[*]", &s->gpt[i], sizeof(s->gpt[i]),
TYPE_IMX25_GPT);
}
for (i = 0; i < FSL_IMX25_NUM_EPITS; i++) {
sysbus_init_child_obj(obj, "epit[*]", &s->epit[i], sizeof(s->epit[i]),
TYPE_IMX_EPIT);
}
sysbus_init_child_obj(obj, "fec", &s->fec, sizeof(s->fec), TYPE_IMX_FEC);
sysbus_init_child_obj(obj, "rngc", &s->rngc, sizeof(s->rngc),
TYPE_IMX_RNGC);
for (i = 0; i < FSL_IMX25_NUM_I2CS; i++) {
sysbus_init_child_obj(obj, "i2c[*]", &s->i2c[i], sizeof(s->i2c[i]),
TYPE_IMX_I2C);
}
for (i = 0; i < FSL_IMX25_NUM_GPIOS; i++) {
sysbus_init_child_obj(obj, "gpio[*]", &s->gpio[i], sizeof(s->gpio[i]),
TYPE_IMX_GPIO);
}
}
static void fsl_imx25_realize(DeviceState *dev, Error **errp)
{
FslIMX25State *s = FSL_IMX25(dev);
uint8_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_IMX25_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_IMX25_CCM_ADDR);
/* Initialize all UARTs */
for (i = 0; i < FSL_IMX25_NUM_UARTS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} serial_table[FSL_IMX25_NUM_UARTS] = {
{ FSL_IMX25_UART1_ADDR, FSL_IMX25_UART1_IRQ },
{ FSL_IMX25_UART2_ADDR, FSL_IMX25_UART2_IRQ },
{ FSL_IMX25_UART3_ADDR, FSL_IMX25_UART3_IRQ },
{ FSL_IMX25_UART4_ADDR, FSL_IMX25_UART4_IRQ },
{ FSL_IMX25_UART5_ADDR, FSL_IMX25_UART5_IRQ }
};
qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", serial_hd(i));
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));
}
/* Initialize all GPT timers */
for (i = 0; i < FSL_IMX25_NUM_GPTS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} gpt_table[FSL_IMX25_NUM_GPTS] = {
{ FSL_IMX25_GPT1_ADDR, FSL_IMX25_GPT1_IRQ },
{ FSL_IMX25_GPT2_ADDR, FSL_IMX25_GPT2_IRQ },
{ FSL_IMX25_GPT3_ADDR, FSL_IMX25_GPT3_IRQ },
{ FSL_IMX25_GPT4_ADDR, FSL_IMX25_GPT4_IRQ }
};
s->gpt[i].ccm = IMX_CCM(&s->ccm);
object_property_set_bool(OBJECT(&s->gpt[i]), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpt[i]), 0, gpt_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpt[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
gpt_table[i].irq));
}
/* Initialize all EPIT timers */
for (i = 0; i < FSL_IMX25_NUM_EPITS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} epit_table[FSL_IMX25_NUM_EPITS] = {
{ FSL_IMX25_EPIT1_ADDR, FSL_IMX25_EPIT1_IRQ },
{ FSL_IMX25_EPIT2_ADDR, FSL_IMX25_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));
}
qdev_set_nic_properties(DEVICE(&s->fec), &nd_table[0]);
object_property_set_bool(OBJECT(&s->fec), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->fec), 0, FSL_IMX25_FEC_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->fec), 0,
qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX25_FEC_IRQ));
object_property_set_bool(OBJECT(&s->rngc), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->rngc), 0, FSL_IMX25_RNGC_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->rngc), 0,
qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX25_RNGC_IRQ));
/* Initialize all I2C */
for (i = 0; i < FSL_IMX25_NUM_I2CS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} i2c_table[FSL_IMX25_NUM_I2CS] = {
{ FSL_IMX25_I2C1_ADDR, FSL_IMX25_I2C1_IRQ },
{ FSL_IMX25_I2C2_ADDR, FSL_IMX25_I2C2_IRQ },
{ FSL_IMX25_I2C3_ADDR, FSL_IMX25_I2C3_IRQ }
};
object_property_set_bool(OBJECT(&s->i2c[i]), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c[i]), 0, i2c_table[i].addr);
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_IMX25_NUM_GPIOS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} gpio_table[FSL_IMX25_NUM_GPIOS] = {
{ FSL_IMX25_GPIO1_ADDR, FSL_IMX25_GPIO1_IRQ },
{ FSL_IMX25_GPIO2_ADDR, FSL_IMX25_GPIO2_IRQ },
{ FSL_IMX25_GPIO3_ADDR, FSL_IMX25_GPIO3_IRQ },
{ FSL_IMX25_GPIO4_ADDR, FSL_IMX25_GPIO4_IRQ }
};
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));
}
/* initialize 2 x 16 KB ROM */
memory_region_init_rom(&s->rom[0], NULL,
"imx25.rom0", FSL_IMX25_ROM0_SIZE, &err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX25_ROM0_ADDR,
&s->rom[0]);
memory_region_init_rom(&s->rom[1], NULL,
"imx25.rom1", FSL_IMX25_ROM1_SIZE, &err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX25_ROM1_ADDR,
&s->rom[1]);
/* initialize internal RAM (128 KB) */
memory_region_init_ram(&s->iram, NULL, "imx25.iram", FSL_IMX25_IRAM_SIZE,
&err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX25_IRAM_ADDR,
&s->iram);
/* internal RAM (128 KB) is aliased over 128 MB - 128 KB */
memory_region_init_alias(&s->iram_alias, NULL, "imx25.iram_alias",
&s->iram, 0, FSL_IMX25_IRAM_ALIAS_SIZE);
memory_region_add_subregion(get_system_memory(), FSL_IMX25_IRAM_ALIAS_ADDR,
&s->iram_alias);
}
static void fsl_imx25_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = fsl_imx25_realize;
dc->desc = "i.MX25 SOC";
/*
* Reason: uses serial_hds in realize and the imx25 board does not
* support multiple CPUs
*/
dc->user_creatable = false;
}
static const TypeInfo fsl_imx25_type_info = {
.name = TYPE_FSL_IMX25,
.parent = TYPE_DEVICE,
.instance_size = sizeof(FslIMX25State),
.instance_init = fsl_imx25_init,
.class_init = fsl_imx25_class_init,
};
static void fsl_imx25_register_types(void)
{
type_register_static(&fsl_imx25_type_info);
}
type_init(fsl_imx25_register_types)
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