Amazfit/bip

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hw/arm/amazfit.c

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+
+#include "qemu/osdep.h"
+#include "hw/arm/boot.h"
+#include "hw/arm/stm32l467_soc.h"
+#include "hw/boards.h"
+#include "hw/i2c/i2c.h"
+#include "hw/irq.h"
+#include "hw/loader.h"
+#include "hw/qdev-properties.h"
+#include "hw/qdev-clock.h"
+#include "hw/ssi/ssi.h"
+#include "qapi/error.h"
+#include "ui/console.h"
+
+static uint32_t readu32(hwaddr addr)
+{
+    uint32_t ret;
+    ARMCPU *cpu = ARM_CPU(first_cpu);
+    cpu_memory_rw_debug(cpu, addr, &ret, 4, false);
+
+    return ret;
+}
+qemu_irq buttonIrq;
+qemu_irq buttonExtiIrq;
+qemu_irq touchIrq;
+qemu_irq touchExtiIrq;
+void amazfit_key_event(void *opaque, int keycode)
+{
+    bool pressed = (keycode & 0x80) == 0;
+    printf("KEY: %d | 0x%x\n", keycode & 0x7F, keycode & 0x80);
+
+    switch (keycode & 0x7F) {
+    case 31: /* S */
+             // LOW = pressed, HIGH = unpressed
+        qemu_set_irq(buttonIrq, !pressed);
+        qemu_set_irq(buttonExtiIrq, !pressed);
+        break;
+
+    default:
+        return;
+    }
+}
+
+/* Main SYSCLK frequency in Hz (120MHz) */
+#define SYSCLK_FRQ 120000000ULL
+
+static void bip_init(MachineState *machine)
+{
+    Clock *sysclk;
+
+        /* This clock doesn't need migration because it is fixed-frequency */
+        sysclk = clock_new(OBJECT(machine), "SYSCLK");
+        clock_set_hz(sysclk, SYSCLK_FRQ);
+
+    STM32L467State *dev = STM32L467_SOC(qdev_new(TYPE_STM32L467_SOC));
+    qdev_connect_clock_in(dev, "sysclk", sysclk);
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+
+    SSIBus *spi_bus = (SSIBus *)qdev_get_child_bus(&dev->spi[2], "ssi"); // SPI3
+    DeviceState *display = ssi_create_peripheral(spi_bus, "jdi-lpm013m126c");
+
+    qemu_irq cs_line = qdev_get_gpio_in_named(display, SSI_GPIO_CS, 0);
+    qdev_connect_gpio_out(dev->gpio['G' - 'A'], 12, cs_line);
+
+    buttonIrq = qdev_get_gpio_in(dev->gpio['A' - 'A'], 0);
+    buttonExtiIrq = qdev_get_gpio_in(dev->exti, 0);
+    qemu_add_kbd_event_handler(amazfit_key_event, NULL);
+
+
+    touchIrq = qdev_get_gpio_in(dev->gpio['B' - 'B'], 3);
+    touchExtiIrq = qdev_get_gpio_in(dev->exti, 3);
+
+    /* --- QSPI Flash ---------------------------------------------  */
+    SSIBus *qspi = (SSIBus *)qdev_get_child_bus(&dev->qspi, "qspi");
+    DeviceState *qspi_flash = qdev_new("w25q64fw");
+
+    DriveInfo *dinfo = drive_get(IF_MTD, 0, 0);
+    BlockBackend *blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
+    qdev_prop_set_drive(qspi_flash, "drive", blk);
+    ssi_realize_and_unref(qspi_flash, qspi, &error_fatal);
+
+    qemu_irq mx25u_cs = qdev_get_gpio_in_named(qspi_flash, SSI_GPIO_CS, 0);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&dev->qspi), 1, mx25u_cs);
+
+    if (false) {
+        load_image_targphys("/Users/Marijn/Projects/_pebble/"
+                            "Amazfitbip-FreeRTOS/bin/lcd_test.bin",
+                            0, FLASH_SIZE);
+    } else {
+        load_image_targphys("/Users/hamster/Projects/Bip/FW/out/rom.bin", 0,
+                            FLASH_SIZE);
+    }
+
+    I2CBus *i2c = (I2CBus *)qdev_get_child_bus(&dev->i2c[0], "i2c");
+    DeviceState *ts = DEVICE(i2c_slave_create_simple(i2c, "it7259", 0x46));
+    qdev_connect_gpio_out(ts, 0,  qemu_irq_split(touchIrq,touchExtiIrq));
+
+    armv7m_load_kernel(ARM_CPU(first_cpu), NULL, 0);
+}
+
+static void bip_machine_init(MachineClass *mc)
+{
+    mc->desc = "Amazfit Bip";
+    mc->init = bip_init;
+}
+
+DEFINE_MACHINE("amazfitbip", bip_machine_init)