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X-Received-From: 2607:f8b0:400d:c09::243 Subject: [Qemu-devel] [PATCH v5 1/5]arm: kinetis_k64_mcg X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org, f4bug@amsat.org, Gabriel Augusto Costa Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Gabriel Augusto Costa This Patch include kinetis_k64_mcg.c and .h mcg means Multipurpose Clock Generator (MCG) More information about this peripheral can be found at: pag 579, K64P144M120SF5RM.pdf. Signed-off-by: Gabriel Augusto Costa --- hw/misc/kinetis_k64_mcg.c | 208 ++++++++++++++++++++++++++++++++++++++ include/hw/misc/kinetis_k64_mcg.h | 43 ++++++++ 2 files changed, 251 insertions(+) create mode 100644 hw/misc/kinetis_k64_mcg.c create mode 100644 include/hw/misc/kinetis_k64_mcg.h diff --git a/hw/misc/kinetis_k64_mcg.c b/hw/misc/kinetis_k64_mcg.c new file mode 100644 index 0000000..654f96b --- /dev/null +++ b/hw/misc/kinetis_k64_mcg.c @@ -0,0 +1,208 @@ +/* + * Kinetis K64 peripheral microcontroller emulation. + * + * Copyright (c) 2017 Advantech Wireless + * Written by Gabriel Costa + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 or + * (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" +#include "qemu/log.h" +#include "hw/misc/kinetis_k64_mcg.h" + +static const VMStateDescription vmstate_kinetis_k64_mcg = { + .name = TYPE_KINETIS_K64_MCG, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT8(C1, kinetis_k64_mcg_state), + VMSTATE_UINT8(C2, kinetis_k64_mcg_state), + VMSTATE_UINT8(C3, kinetis_k64_mcg_state), + VMSTATE_UINT8(C4, kinetis_k64_mcg_state), + VMSTATE_UINT8(C5, kinetis_k64_mcg_state), + VMSTATE_UINT8(C6, kinetis_k64_mcg_state), + VMSTATE_UINT8(S, kinetis_k64_mcg_state), + VMSTATE_UINT8(SC, kinetis_k64_mcg_state), + VMSTATE_UINT8(ATCVH, kinetis_k64_mcg_state), + VMSTATE_UINT8(ATCVL, kinetis_k64_mcg_state), + VMSTATE_UINT8(C7, kinetis_k64_mcg_state), + VMSTATE_UINT8(C8, kinetis_k64_mcg_state), + VMSTATE_END_OF_LIST() + } +}; + +static void kinetis_k64_mcg_reset(DeviceState *dev) +{ + kinetis_k64_mcg_state *s = KINETIS_K64_MCG(dev); + + s->C1 = 0x04; + s->C2 = 0x80; + s->C3 = 0x00; + s->C4 = 0x00; + s->C5 = 0x00; + s->C6 = 0x00; + s->S = 0x10; + s->SC = 0x02; + s->ATCVH = 0x00; + s->ATCVL = 0x00; + s->C7 = 0x00; + s->C8 = 0x80; +} + +static void kinetis_k64_mcg_write(void *opaque, hwaddr offset, uint64_t value, + unsigned size) +{ + kinetis_k64_mcg_state *s = (kinetis_k64_mcg_state *)opaque; + + value &= 0xFF; + + switch (offset) { + case 0x00: + if (value & 1 << 2) { /*IREFS*/ + s->S = 0; + s->S |= 1 << 3; /*10 Enconding 2 - External ref clk is selected*/ + } + if ((s->C1 & 0x80) && (value >> 6 == 0)) { + s->S |= 1 << 2; /*11 Enconding 3 - Output of the PLL is selected*/ + } + s->C1 = value; + break; + case 0x01: + s->C2 = value; + break; + case 0x02: + s->C3 = value; + break; + case 0x03: + s->C4 = value; + break; + case 0x04: + s->C5 = value; + if (s->C5 & 1 << 6) { /*PLLCLKEN0*/ + s->S |= 1 << 6; /*LOCK0*/ + } + break; + case 0x05: + s->C6 = value; + if (s->C6 & 1 << 6) { /*PLLS*/ + s->S |= 1 << 5; /*PLLST*/ + } + break; + case 0x06: + s->S = value; + break; + case 0x08: + s->SC = value; + break; + case 0x0A: + s->ATCVH = value; + break; + case 0x0B: + s->ATCVL = value; + break; + case 0x0C: + s->C7 = value; + break; + case 0x0D: + s->C8 = value; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "kinetis_k64_mcg: write at bad offset 0x%x\n", (int)offset); + } +} + +static uint64_t kinetis_k64_mcg_read(void *opaque, hwaddr offset, unsigned size) +{ + kinetis_k64_mcg_state *s = (kinetis_k64_mcg_state *)opaque; + uint8_t value; + + switch (offset) { + case 0x00: + value = s->C1; + break; + case 0x01: + value = s->C2; + break; + case 0x02: + value = s->C3; + break; + case 0x03: + value = s->C4; + break; + case 0x04: + value = s->C5; + break; + case 0x05: + value = s->C6; + break; + case 0x06: + value = s->S; + break; + case 0x08: + value = s->SC; + break; + case 0x0A: + value = s->ATCVH; + break; + case 0x0B: + value = s->ATCVL; + break; + case 0x0C: + value = s->C7; + break; + case 0x0D: + value = s->C8; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "kinetis_k64_mcg: read at bad offset 0x%x\n", (int)offset); + return 0; + } + return value; +} + +static const MemoryRegionOps kinetis_k64_mcg_ops = { + .read = kinetis_k64_mcg_read, + .write = kinetis_k64_mcg_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void kinetis_k64_mcg_init(Object *obj) +{ + kinetis_k64_mcg_state *s = KINETIS_K64_MCG(obj); + SysBusDevice *sbd = SYS_BUS_DEVICE(obj); + + memory_region_init_io(&s->iomem, obj, &kinetis_k64_mcg_ops, s, + TYPE_KINETIS_K64_MCG, 0x1000); + sysbus_init_mmio(sbd, &s->iomem); + sysbus_init_irq(sbd, &s->irq); +} + +static void kinetis_k64_mcg_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->vmsd = &vmstate_kinetis_k64_mcg; + dc->reset = kinetis_k64_mcg_reset; + dc->desc = "Kinetis K64 series MCG"; +} + +static const TypeInfo kinetis_k64_mcg_info = { + .name = TYPE_KINETIS_K64_MCG, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(kinetis_k64_mcg_state), + .instance_init = kinetis_k64_mcg_init, + .class_init = kinetis_k64_mcg_class_init, +}; + +static void kinetis_k64_mcg_register_types(void) +{ + type_register_static(&kinetis_k64_mcg_info); +} + +type_init(kinetis_k64_mcg_register_types) diff --git a/include/hw/misc/kinetis_k64_mcg.h b/include/hw/misc/kinetis_k64_mcg.h new file mode 100644 index 0000000..3f105c5 --- /dev/null +++ b/include/hw/misc/kinetis_k64_mcg.h @@ -0,0 +1,43 @@ +/* + * Kinetis K64 peripheral microcontroller emulation. + * + * Copyright (c) 2017 Advantech Wireless + * Written by Gabriel Costa + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 or + * (at your option) any later version. + */ + +#ifndef KINETIS_MCG_H +#define KINETIS_MCG_H + +#include "hw/sysbus.h" +#include "hw/hw.h" + +#define TYPE_KINETIS_K64_MCG "kinetis_k64_mcg" +#define KINETIS_K64_MCG(obj) \ + OBJECT_CHECK(kinetis_k64_mcg_state, (obj), TYPE_KINETIS_K64_MCG) + +typedef struct { + SysBusDevice parent_obj; + + MemoryRegion iomem; + + uint8_t C1; + uint8_t C2; + uint8_t C3; + uint8_t C4; + uint8_t C5; + uint8_t C6; + uint8_t S; + uint8_t SC; + uint8_t ATCVH; + uint8_t ATCVL; + uint8_t C7; + uint8_t C8; + + qemu_irq irq; +} kinetis_k64_mcg_state; + +#endif