OpenE2K
/
qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

hw/arm: Connect BSC to BCM2835 board as I2C0, I2C1 and I2C2 

BCM2835 has three I2C controllers. All of them share the same interrupt line.

Signed-off-by: Rayhan Faizel <rayhan.faizel@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240224191038.2409945-3-rayhan.faizel@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Rayhan Faizel 2024-02-25 00:40:37 +05:30 committed by Peter Maydell
parent 9cf3bc65af
commit f5c6320bf7
3 changed files with 46 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
hw/arm/Kconfig
View File

@ -438,6 +438,7 @@ config RASPI
select SDHCI
select USB_DWC2
select BCM2835_SPI
select BCM2835_I2C
config STM32F100_SOC
bool

45
hw/arm/bcm2835_peripherals.c
View File

@ -30,6 +30,9 @@
#define SEPARATE_DMA_IRQ_MAX 10
#define ORGATED_DMA_IRQ_COUNT 4
/* All three I2C controllers share the same IRQ */
#define ORGATED_I2C_IRQ_COUNT 3
void create_unimp(BCMSocPeripheralBaseState *ps,
UnimplementedDeviceState *uds,
const char *name, hwaddr ofs, hwaddr size)
@ -157,6 +160,19 @@ static void raspi_peripherals_base_init(Object *obj)
/* SPI */
object_initialize_child(obj, "bcm2835-spi0", &s->spi[0],
TYPE_BCM2835_SPI);
/* I2C */
object_initialize_child(obj, "bcm2835-i2c0", &s->i2c[0],
TYPE_BCM2835_I2C);
object_initialize_child(obj, "bcm2835-i2c1", &s->i2c[1],
TYPE_BCM2835_I2C);
object_initialize_child(obj, "bcm2835-i2c2", &s->i2c[2],
TYPE_BCM2835_I2C);
object_initialize_child(obj, "orgated-i2c-irq",
&s->orgated_i2c_irq, TYPE_OR_IRQ);
object_property_set_int(OBJECT(&s->orgated_i2c_irq), "num-lines",
ORGATED_I2C_IRQ_COUNT, &error_abort);
}
static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
@ -453,14 +469,37 @@ void bcm_soc_peripherals_common_realize(DeviceState *dev, Error **errp)
BCM2835_IC_GPU_IRQ,
INTERRUPT_SPI));
/* I2C */
for (n = 0; n < 3; n++) {
if (!sysbus_realize(SYS_BUS_DEVICE(&s->i2c[n]), errp)) {
return;
}
}
memory_region_add_subregion(&s->peri_mr, BSC0_OFFSET,
sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->i2c[0]), 0));
memory_region_add_subregion(&s->peri_mr, BSC1_OFFSET,
sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->i2c[1]), 0));
memory_region_add_subregion(&s->peri_mr, BSC2_OFFSET,
sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->i2c[2]), 0));
if (!qdev_realize(DEVICE(&s->orgated_i2c_irq), NULL, errp)) {
return;
}
for (n = 0; n < ORGATED_I2C_IRQ_COUNT; n++) {
sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[n]), 0,
qdev_get_gpio_in(DEVICE(&s->orgated_i2c_irq), n));
}
qdev_connect_gpio_out(DEVICE(&s->orgated_i2c_irq), 0,
qdev_get_gpio_in_named(DEVICE(&s->ic),
BCM2835_IC_GPU_IRQ,
INTERRUPT_I2C));
create_unimp(s, &s->txp, "bcm2835-txp", TXP_OFFSET, 0x1000);
create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);

4
include/hw/arm/bcm2835_peripherals.h
View File

@ -32,6 +32,7 @@
#include "hw/timer/bcm2835_systmr.h"
#include "hw/usb/hcd-dwc2.h"
#include "hw/ssi/bcm2835_spi.h"
#include "hw/i2c/bcm2835_i2c.h"
#include "hw/misc/unimp.h"
#include "qom/object.h"
@ -68,7 +69,8 @@ struct BCMSocPeripheralBaseState {
BCM2835SDHostState sdhost;
UnimplementedDeviceState i2s;
BCM2835SPIState spi[1];
UnimplementedDeviceState i2c[3];
BCM2835I2CState i2c[3];
OrIRQState orgated_i2c_irq;
UnimplementedDeviceState otp;
UnimplementedDeviceState dbus;
UnimplementedDeviceState ave0;