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MAX78000: Add UART to SOC

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This commit adds UART to max78000_soc

Signed-off-by: Jackson Donaldson <jcksn@duck.com>
Reviewed-by: Peter Maydell <petermaydell@linaro.org>
Message-id: 20250704223239.248781-6-jcksn@duck.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Jackson Donaldson 2025-07-04 18:32:33 -04:00 • committed by Peter Maydell
parent d447e4b702
commit a670bb8a72
2 changed files with 27 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

28
hw/arm/max78000_soc.c
View file

@ -18,6 +18,10 @@
#include "hw/misc/unimp.h"
static const uint32_t max78000_icc_addr[] = {0x4002a000, 0x4002a800};
static const uint32_t max78000_uart_addr[] = {0x40042000, 0x40043000,
0x40044000};
static const int max78000_uart_irq[] = {14, 15, 34};
static void max78000_soc_initfn(Object *obj)
{
@ -31,6 +35,12 @@ static void max78000_soc_initfn(Object *obj)
object_initialize_child(obj, name, &s->icc[i], TYPE_MAX78000_ICC);
}
for (i = 0; i < MAX78000_NUM_UART; i++) {
g_autofree char *name = g_strdup_printf("uart%d", i);
object_initialize_child(obj, name, &s->uart[i],
TYPE_MAX78000_UART);
}
s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
}
@ -39,6 +49,7 @@ static void max78000_soc_realize(DeviceState *dev_soc, Error **errp)
MAX78000State *s = MAX78000_SOC(dev_soc);
MemoryRegion *system_memory = get_system_memory();
DeviceState *dev, *armv7m;
SysBusDevice *busdev;
Error *err = NULL;
int i;
@ -89,6 +100,19 @@ static void max78000_soc_realize(DeviceState *dev_soc, Error **errp)
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, max78000_icc_addr[i]);
}
for (i = 0; i < MAX78000_NUM_UART; i++) {
dev = DEVICE(&(s->uart[i]));
qdev_prop_set_chr(dev, "chardev", serial_hd(i));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart[i]), errp)) {
return;
}
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, max78000_uart_addr[i]);
sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m,
max78000_uart_irq[i]));
}
create_unimplemented_device("globalControl", 0x40000000, 0x400);
create_unimplemented_device("systemInterface", 0x40000400, 0x400);
create_unimplemented_device("functionControl", 0x40000800, 0x400);
@ -127,10 +151,6 @@ static void max78000_soc_realize(DeviceState *dev_soc, Error **errp)
create_unimplemented_device("oneWireMaster", 0x4003d000, 0x1000);
create_unimplemented_device("semaphore", 0x4003e000, 0x1000);
create_unimplemented_device("uart0", 0x40042000, 0x1000);
create_unimplemented_device("uart1", 0x40043000, 0x1000);
create_unimplemented_device("uart2", 0x40044000, 0x1000);
create_unimplemented_device("spi1", 0x40046000, 0x2000);
create_unimplemented_device("trng", 0x4004d000, 0x1000);
create_unimplemented_device("i2s", 0x40060000, 0x1000);

3
include/hw/arm/max78000_soc.h
View file

@ -12,6 +12,7 @@
#include "hw/or-irq.h"
#include "hw/arm/armv7m.h"
#include "hw/misc/max78000_icc.h"
#include "hw/char/max78000_uart.h"
#include "qom/object.h"
#define TYPE_MAX78000_SOC "max78000-soc"
@ -24,6 +25,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(MAX78000State, MAX78000_SOC)
/* The MAX78k has 2 instruction caches; only icc0 matters, icc1 is for RISC */
#define MAX78000_NUM_ICC 2
#define MAX78000_NUM_UART 3
struct MAX78000State {
SysBusDevice parent_obj;
@ -34,6 +36,7 @@ struct MAX78000State {
MemoryRegion flash;
Max78000IccState icc[MAX78000_NUM_ICC];
Max78000UartState uart[MAX78000_NUM_UART];
Clock *sysclk;
};