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/*
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* StrongARM SA-1100/SA-1110 emulation
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*
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* Copyright (C) 2011 Dmitry Eremin-Solenikov
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*
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* Largely based on StrongARM emulation:
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* Copyright (c) 2006 Openedhand Ltd.
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* Written by Andrzej Zaborowski <balrog@zabor.org>
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*
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* UART code based on QEMU 16550A UART emulation
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* Copyright (c) 2003-2004 Fabrice Bellard
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* Copyright (c) 2008 Citrix Systems, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "sysbus.h" |
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#include "strongarm.h" |
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#include "qemu-error.h" |
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#include "arm-misc.h" |
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#include "sysemu.h" |
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#include "ssi.h" |
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|
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//#define DEBUG
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|
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/*
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TODO
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- Implement cp15, c14 ?
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- Implement cp15, c15 !!! (idle used in L)
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- Implement idle mode handling/DIM
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- Implement sleep mode/Wake sources
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- Implement reset control
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- Implement memory control regs
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- PCMCIA handling
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- Maybe support MBGNT/MBREQ
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- DMA channels
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- GPCLK
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- IrDA
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- MCP
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- Enhance UART with modem signals
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*/
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|
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#ifdef DEBUG
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# define DPRINTF(format, ...) printf(format , ## __VA_ARGS__) |
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#else
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# define DPRINTF(format, ...) do { } while (0) |
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#endif
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|
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static struct { |
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target_phys_addr_t io_base; |
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int irq;
|
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} sa_serial[] = {
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{ 0x80010000, SA_PIC_UART1 },
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{ 0x80030000, SA_PIC_UART2 },
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{ 0x80050000, SA_PIC_UART3 },
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{ 0, 0 }
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}; |
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|
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/* Interrupt Controller */
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typedef struct { |
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SysBusDevice busdev; |
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MemoryRegion iomem; |
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qemu_irq irq; |
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qemu_irq fiq; |
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|
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uint32_t pending; |
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uint32_t enabled; |
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uint32_t is_fiq; |
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uint32_t int_idle; |
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} StrongARMPICState; |
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|
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#define ICIP 0x00 |
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#define ICMR 0x04 |
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#define ICLR 0x08 |
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#define ICFP 0x10 |
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#define ICPR 0x20 |
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#define ICCR 0x0c |
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|
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#define SA_PIC_SRCS 32 |
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|
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|
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static void strongarm_pic_update(void *opaque) |
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{
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StrongARMPICState *s = opaque; |
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|
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/* FIXME: reflect DIM */
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qemu_set_irq(s->fiq, s->pending & s->enabled & s->is_fiq); |
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qemu_set_irq(s->irq, s->pending & s->enabled & ~s->is_fiq); |
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} |
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|
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static void strongarm_pic_set_irq(void *opaque, int irq, int level) |
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{
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StrongARMPICState *s = opaque; |
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|
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if (level) {
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s->pending |= 1 << irq;
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} else {
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s->pending &= ~(1 << irq);
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} |
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|
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strongarm_pic_update(s); |
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} |
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|
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static uint64_t strongarm_pic_mem_read(void *opaque, target_phys_addr_t offset, |
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unsigned size)
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{
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StrongARMPICState *s = opaque; |
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|
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switch (offset) {
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case ICIP:
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return s->pending & ~s->is_fiq & s->enabled;
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case ICMR:
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return s->enabled;
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case ICLR:
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return s->is_fiq;
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case ICCR:
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return s->int_idle == 0; |
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case ICFP:
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return s->pending & s->is_fiq & s->enabled;
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case ICPR:
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return s->pending;
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default:
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printf("%s: Bad register offset 0x" TARGET_FMT_plx "\n", |
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__func__, offset); |
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return 0; |
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} |
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} |
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|
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static void strongarm_pic_mem_write(void *opaque, target_phys_addr_t offset, |
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uint64_t value, unsigned size)
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{
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StrongARMPICState *s = opaque; |
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|
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switch (offset) {
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case ICMR:
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s->enabled = value; |
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break;
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case ICLR:
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s->is_fiq = value; |
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break;
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case ICCR:
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s->int_idle = (value & 1) ? 0 : ~0; |
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break;
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default:
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printf("%s: Bad register offset 0x" TARGET_FMT_plx "\n", |
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__func__, offset); |
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break;
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} |
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strongarm_pic_update(s); |
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} |
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|
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static const MemoryRegionOps strongarm_pic_ops = { |
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.read = strongarm_pic_mem_read, |
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.write = strongarm_pic_mem_write, |
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.endianness = DEVICE_NATIVE_ENDIAN, |
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}; |
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|
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static int strongarm_pic_initfn(SysBusDevice *dev) |
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{
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StrongARMPICState *s = FROM_SYSBUS(StrongARMPICState, dev); |
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|
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qdev_init_gpio_in(&dev->qdev, strongarm_pic_set_irq, SA_PIC_SRCS); |
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memory_region_init_io(&s->iomem, &strongarm_pic_ops, s, "pic", 0x1000); |
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sysbus_init_mmio_region(dev, &s->iomem); |
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sysbus_init_irq(dev, &s->irq); |
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sysbus_init_irq(dev, &s->fiq); |
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return 0; |
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} |
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|
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static int strongarm_pic_post_load(void *opaque, int version_id) |
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{
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strongarm_pic_update(opaque); |
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return 0; |
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} |
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|
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static VMStateDescription vmstate_strongarm_pic_regs = {
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.name = "strongarm_pic",
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.version_id = 0,
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.minimum_version_id = 0,
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.minimum_version_id_old = 0,
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.post_load = strongarm_pic_post_load, |
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.fields = (VMStateField[]) {
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VMSTATE_UINT32(pending, StrongARMPICState), |
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VMSTATE_UINT32(enabled, StrongARMPICState), |
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VMSTATE_UINT32(is_fiq, StrongARMPICState), |
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VMSTATE_UINT32(int_idle, StrongARMPICState), |
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VMSTATE_END_OF_LIST(), |
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}, |
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}; |
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|
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static SysBusDeviceInfo strongarm_pic_info = {
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.init = strongarm_pic_initfn, |
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.qdev.name = "strongarm_pic",
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.qdev.desc = "StrongARM PIC",
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.qdev.size = sizeof(StrongARMPICState),
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.qdev.vmsd = &vmstate_strongarm_pic_regs, |
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}; |
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|
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/* Real-Time Clock */
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#define RTAR 0x00 /* RTC Alarm register */ |
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#define RCNR 0x04 /* RTC Counter register */ |
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#define RTTR 0x08 /* RTC Timer Trim register */ |
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#define RTSR 0x10 /* RTC Status register */ |
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|
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#define RTSR_AL (1 << 0) /* RTC Alarm detected */ |
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#define RTSR_HZ (1 << 1) /* RTC 1Hz detected */ |
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#define RTSR_ALE (1 << 2) /* RTC Alarm enable */ |
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#define RTSR_HZE (1 << 3) /* RTC 1Hz enable */ |
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|
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/* 16 LSB of RTTR are clockdiv for internal trim logic,
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* trim delete isn't emulated, so
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* f = 32 768 / (RTTR_trim + 1) */
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typedef struct { |
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SysBusDevice busdev; |
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MemoryRegion iomem; |
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uint32_t rttr; |
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uint32_t rtsr; |
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uint32_t rtar; |
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uint32_t last_rcnr; |
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int64_t last_hz; |
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QEMUTimer *rtc_alarm; |
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QEMUTimer *rtc_hz; |
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qemu_irq rtc_irq; |
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qemu_irq rtc_hz_irq; |
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} StrongARMRTCState; |
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|
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static inline void strongarm_rtc_int_update(StrongARMRTCState *s) |
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{
|
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qemu_set_irq(s->rtc_irq, s->rtsr & RTSR_AL); |
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qemu_set_irq(s->rtc_hz_irq, s->rtsr & RTSR_HZ); |
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} |
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|
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static void strongarm_rtc_hzupdate(StrongARMRTCState *s) |
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{
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int64_t rt = qemu_get_clock_ms(rt_clock); |
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s->last_rcnr += ((rt - s->last_hz) << 15) /
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(1000 * ((s->rttr & 0xffff) + 1)); |
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s->last_hz = rt; |
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} |
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|
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static inline void strongarm_rtc_timer_update(StrongARMRTCState *s) |
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{
|
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if ((s->rtsr & RTSR_HZE) && !(s->rtsr & RTSR_HZ)) {
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qemu_mod_timer(s->rtc_hz, s->last_hz + 1000);
|
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} else {
|
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qemu_del_timer(s->rtc_hz); |
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} |
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|
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if ((s->rtsr & RTSR_ALE) && !(s->rtsr & RTSR_AL)) {
|
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qemu_mod_timer(s->rtc_alarm, s->last_hz + |
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(((s->rtar - s->last_rcnr) * 1000 *
|
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((s->rttr & 0xffff) + 1)) >> 15)); |
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} else {
|
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qemu_del_timer(s->rtc_alarm); |
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} |
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} |
| 268 |
|
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static inline void strongarm_rtc_alarm_tick(void *opaque) |
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{
|
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StrongARMRTCState *s = opaque; |
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s->rtsr |= RTSR_AL; |
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strongarm_rtc_timer_update(s); |
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strongarm_rtc_int_update(s); |
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} |
| 276 |
|
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static inline void strongarm_rtc_hz_tick(void *opaque) |
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{
|
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StrongARMRTCState *s = opaque; |
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s->rtsr |= RTSR_HZ; |
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strongarm_rtc_timer_update(s); |
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strongarm_rtc_int_update(s); |
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} |
| 284 |
|
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static uint64_t strongarm_rtc_read(void *opaque, target_phys_addr_t addr, |
| 286 |
unsigned size)
|
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{
|
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StrongARMRTCState *s = opaque; |
| 289 |
|
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switch (addr) {
|
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case RTTR:
|
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return s->rttr;
|
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case RTSR:
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return s->rtsr;
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case RTAR:
|
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return s->rtar;
|
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case RCNR:
|
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return s->last_rcnr +
|
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((qemu_get_clock_ms(rt_clock) - s->last_hz) << 15) /
|
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(1000 * ((s->rttr & 0xffff) + 1)); |
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default:
|
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printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr); |
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return 0; |
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} |
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} |
| 306 |
|
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static void strongarm_rtc_write(void *opaque, target_phys_addr_t addr, |
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uint64_t value, unsigned size)
|
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{
|
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StrongARMRTCState *s = opaque; |
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uint32_t old_rtsr; |
| 312 |
|
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switch (addr) {
|
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case RTTR:
|
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strongarm_rtc_hzupdate(s); |
| 316 |
s->rttr = value; |
| 317 |
strongarm_rtc_timer_update(s); |
| 318 |
break;
|
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|
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case RTSR:
|
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old_rtsr = s->rtsr; |
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s->rtsr = (value & (RTSR_ALE | RTSR_HZE)) | |
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(s->rtsr & ~(value & (RTSR_AL | RTSR_HZ))); |
| 324 |
|
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if (s->rtsr != old_rtsr) {
|
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strongarm_rtc_timer_update(s); |
| 327 |
} |
| 328 |
|
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strongarm_rtc_int_update(s); |
| 330 |
break;
|
| 331 |
|
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case RTAR:
|
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s->rtar = value; |
| 334 |
strongarm_rtc_timer_update(s); |
| 335 |
break;
|
| 336 |
|
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case RCNR:
|
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strongarm_rtc_hzupdate(s); |
| 339 |
s->last_rcnr = value; |
| 340 |
strongarm_rtc_timer_update(s); |
| 341 |
break;
|
| 342 |
|
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default:
|
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printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr); |
| 345 |
} |
| 346 |
} |
| 347 |
|
| 348 |
static const MemoryRegionOps strongarm_rtc_ops = { |
| 349 |
.read = strongarm_rtc_read, |
| 350 |
.write = strongarm_rtc_write, |
| 351 |
.endianness = DEVICE_NATIVE_ENDIAN, |
| 352 |
}; |
| 353 |
|
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static int strongarm_rtc_init(SysBusDevice *dev) |
| 355 |
{
|
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StrongARMRTCState *s = FROM_SYSBUS(StrongARMRTCState, dev); |
| 357 |
struct tm tm;
|
| 358 |
|
| 359 |
s->rttr = 0x0;
|
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s->rtsr = 0;
|
| 361 |
|
| 362 |
qemu_get_timedate(&tm, 0);
|
| 363 |
|
| 364 |
s->last_rcnr = (uint32_t) mktimegm(&tm); |
| 365 |
s->last_hz = qemu_get_clock_ms(rt_clock); |
| 366 |
|
| 367 |
s->rtc_alarm = qemu_new_timer_ms(rt_clock, strongarm_rtc_alarm_tick, s); |
| 368 |
s->rtc_hz = qemu_new_timer_ms(rt_clock, strongarm_rtc_hz_tick, s); |
| 369 |
|
| 370 |
sysbus_init_irq(dev, &s->rtc_irq); |
| 371 |
sysbus_init_irq(dev, &s->rtc_hz_irq); |
| 372 |
|
| 373 |
memory_region_init_io(&s->iomem, &strongarm_rtc_ops, s, "rtc", 0x10000); |
| 374 |
sysbus_init_mmio_region(dev, &s->iomem); |
| 375 |
|
| 376 |
return 0; |
| 377 |
} |
| 378 |
|
| 379 |
static void strongarm_rtc_pre_save(void *opaque) |
| 380 |
{
|
| 381 |
StrongARMRTCState *s = opaque; |
| 382 |
|
| 383 |
strongarm_rtc_hzupdate(s); |
| 384 |
} |
| 385 |
|
| 386 |
static int strongarm_rtc_post_load(void *opaque, int version_id) |
| 387 |
{
|
| 388 |
StrongARMRTCState *s = opaque; |
| 389 |
|
| 390 |
strongarm_rtc_timer_update(s); |
| 391 |
strongarm_rtc_int_update(s); |
| 392 |
|
| 393 |
return 0; |
| 394 |
} |
| 395 |
|
| 396 |
static const VMStateDescription vmstate_strongarm_rtc_regs = { |
| 397 |
.name = "strongarm-rtc",
|
| 398 |
.version_id = 0,
|
| 399 |
.minimum_version_id = 0,
|
| 400 |
.minimum_version_id_old = 0,
|
| 401 |
.pre_save = strongarm_rtc_pre_save, |
| 402 |
.post_load = strongarm_rtc_post_load, |
| 403 |
.fields = (VMStateField[]) {
|
| 404 |
VMSTATE_UINT32(rttr, StrongARMRTCState), |
| 405 |
VMSTATE_UINT32(rtsr, StrongARMRTCState), |
| 406 |
VMSTATE_UINT32(rtar, StrongARMRTCState), |
| 407 |
VMSTATE_UINT32(last_rcnr, StrongARMRTCState), |
| 408 |
VMSTATE_INT64(last_hz, StrongARMRTCState), |
| 409 |
VMSTATE_END_OF_LIST(), |
| 410 |
}, |
| 411 |
}; |
| 412 |
|
| 413 |
static SysBusDeviceInfo strongarm_rtc_sysbus_info = {
|
| 414 |
.init = strongarm_rtc_init, |
| 415 |
.qdev.name = "strongarm-rtc",
|
| 416 |
.qdev.desc = "StrongARM RTC Controller",
|
| 417 |
.qdev.size = sizeof(StrongARMRTCState),
|
| 418 |
.qdev.vmsd = &vmstate_strongarm_rtc_regs, |
| 419 |
}; |
| 420 |
|
| 421 |
/* GPIO */
|
| 422 |
#define GPLR 0x00 |
| 423 |
#define GPDR 0x04 |
| 424 |
#define GPSR 0x08 |
| 425 |
#define GPCR 0x0c |
| 426 |
#define GRER 0x10 |
| 427 |
#define GFER 0x14 |
| 428 |
#define GEDR 0x18 |
| 429 |
#define GAFR 0x1c |
| 430 |
|
| 431 |
typedef struct StrongARMGPIOInfo StrongARMGPIOInfo; |
| 432 |
struct StrongARMGPIOInfo {
|
| 433 |
SysBusDevice busdev; |
| 434 |
MemoryRegion iomem; |
| 435 |
qemu_irq handler[28];
|
| 436 |
qemu_irq irqs[11];
|
| 437 |
qemu_irq irqX; |
| 438 |
|
| 439 |
uint32_t ilevel; |
| 440 |
uint32_t olevel; |
| 441 |
uint32_t dir; |
| 442 |
uint32_t rising; |
| 443 |
uint32_t falling; |
| 444 |
uint32_t status; |
| 445 |
uint32_t gpsr; |
| 446 |
uint32_t gafr; |
| 447 |
|
| 448 |
uint32_t prev_level; |
| 449 |
}; |
| 450 |
|
| 451 |
|
| 452 |
static void strongarm_gpio_irq_update(StrongARMGPIOInfo *s) |
| 453 |
{
|
| 454 |
int i;
|
| 455 |
for (i = 0; i < 11; i++) { |
| 456 |
qemu_set_irq(s->irqs[i], s->status & (1 << i));
|
| 457 |
} |
| 458 |
|
| 459 |
qemu_set_irq(s->irqX, (s->status & ~0x7ff));
|
| 460 |
} |
| 461 |
|
| 462 |
static void strongarm_gpio_set(void *opaque, int line, int level) |
| 463 |
{
|
| 464 |
StrongARMGPIOInfo *s = opaque; |
| 465 |
uint32_t mask; |
| 466 |
|
| 467 |
mask = 1 << line;
|
| 468 |
|
| 469 |
if (level) {
|
| 470 |
s->status |= s->rising & mask & |
| 471 |
~s->ilevel & ~s->dir; |
| 472 |
s->ilevel |= mask; |
| 473 |
} else {
|
| 474 |
s->status |= s->falling & mask & |
| 475 |
s->ilevel & ~s->dir; |
| 476 |
s->ilevel &= ~mask; |
| 477 |
} |
| 478 |
|
| 479 |
if (s->status & mask) {
|
| 480 |
strongarm_gpio_irq_update(s); |
| 481 |
} |
| 482 |
} |
| 483 |
|
| 484 |
static void strongarm_gpio_handler_update(StrongARMGPIOInfo *s) |
| 485 |
{
|
| 486 |
uint32_t level, diff; |
| 487 |
int bit;
|
| 488 |
|
| 489 |
level = s->olevel & s->dir; |
| 490 |
|
| 491 |
for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) { |
| 492 |
bit = ffs(diff) - 1;
|
| 493 |
qemu_set_irq(s->handler[bit], (level >> bit) & 1);
|
| 494 |
} |
| 495 |
|
| 496 |
s->prev_level = level; |
| 497 |
} |
| 498 |
|
| 499 |
static uint64_t strongarm_gpio_read(void *opaque, target_phys_addr_t offset, |
| 500 |
unsigned size)
|
| 501 |
{
|
| 502 |
StrongARMGPIOInfo *s = opaque; |
| 503 |
|
| 504 |
switch (offset) {
|
| 505 |
case GPDR: /* GPIO Pin-Direction registers */ |
| 506 |
return s->dir;
|
| 507 |
|
| 508 |
case GPSR: /* GPIO Pin-Output Set registers */ |
| 509 |
DPRINTF("%s: Read from a write-only register 0x" TARGET_FMT_plx "\n", |
| 510 |
__func__, offset); |
| 511 |
return s->gpsr; /* Return last written value. */ |
| 512 |
|
| 513 |
case GPCR: /* GPIO Pin-Output Clear registers */ |
| 514 |
DPRINTF("%s: Read from a write-only register 0x" TARGET_FMT_plx "\n", |
| 515 |
__func__, offset); |
| 516 |
return 31337; /* Specified as unpredictable in the docs. */ |
| 517 |
|
| 518 |
case GRER: /* GPIO Rising-Edge Detect Enable registers */ |
| 519 |
return s->rising;
|
| 520 |
|
| 521 |
case GFER: /* GPIO Falling-Edge Detect Enable registers */ |
| 522 |
return s->falling;
|
| 523 |
|
| 524 |
case GAFR: /* GPIO Alternate Function registers */ |
| 525 |
return s->gafr;
|
| 526 |
|
| 527 |
case GPLR: /* GPIO Pin-Level registers */ |
| 528 |
return (s->olevel & s->dir) |
|
| 529 |
(s->ilevel & ~s->dir); |
| 530 |
|
| 531 |
case GEDR: /* GPIO Edge Detect Status registers */ |
| 532 |
return s->status;
|
| 533 |
|
| 534 |
default:
|
| 535 |
printf("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset); |
| 536 |
} |
| 537 |
|
| 538 |
return 0; |
| 539 |
} |
| 540 |
|
| 541 |
static void strongarm_gpio_write(void *opaque, target_phys_addr_t offset, |
| 542 |
uint64_t value, unsigned size)
|
| 543 |
{
|
| 544 |
StrongARMGPIOInfo *s = opaque; |
| 545 |
|
| 546 |
switch (offset) {
|
| 547 |
case GPDR: /* GPIO Pin-Direction registers */ |
| 548 |
s->dir = value; |
| 549 |
strongarm_gpio_handler_update(s); |
| 550 |
break;
|
| 551 |
|
| 552 |
case GPSR: /* GPIO Pin-Output Set registers */ |
| 553 |
s->olevel |= value; |
| 554 |
strongarm_gpio_handler_update(s); |
| 555 |
s->gpsr = value; |
| 556 |
break;
|
| 557 |
|
| 558 |
case GPCR: /* GPIO Pin-Output Clear registers */ |
| 559 |
s->olevel &= ~value; |
| 560 |
strongarm_gpio_handler_update(s); |
| 561 |
break;
|
| 562 |
|
| 563 |
case GRER: /* GPIO Rising-Edge Detect Enable registers */ |
| 564 |
s->rising = value; |
| 565 |
break;
|
| 566 |
|
| 567 |
case GFER: /* GPIO Falling-Edge Detect Enable registers */ |
| 568 |
s->falling = value; |
| 569 |
break;
|
| 570 |
|
| 571 |
case GAFR: /* GPIO Alternate Function registers */ |
| 572 |
s->gafr = value; |
| 573 |
break;
|
| 574 |
|
| 575 |
case GEDR: /* GPIO Edge Detect Status registers */ |
| 576 |
s->status &= ~value; |
| 577 |
strongarm_gpio_irq_update(s); |
| 578 |
break;
|
| 579 |
|
| 580 |
default:
|
| 581 |
printf("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset); |
| 582 |
} |
| 583 |
} |
| 584 |
|
| 585 |
static const MemoryRegionOps strongarm_gpio_ops = { |
| 586 |
.read = strongarm_gpio_read, |
| 587 |
.write = strongarm_gpio_write, |
| 588 |
.endianness = DEVICE_NATIVE_ENDIAN, |
| 589 |
}; |
| 590 |
|
| 591 |
static DeviceState *strongarm_gpio_init(target_phys_addr_t base,
|
| 592 |
DeviceState *pic) |
| 593 |
{
|
| 594 |
DeviceState *dev; |
| 595 |
int i;
|
| 596 |
|
| 597 |
dev = qdev_create(NULL, "strongarm-gpio"); |
| 598 |
qdev_init_nofail(dev); |
| 599 |
|
| 600 |
sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
|
| 601 |
for (i = 0; i < 12; i++) |
| 602 |
sysbus_connect_irq(sysbus_from_qdev(dev), i, |
| 603 |
qdev_get_gpio_in(pic, SA_PIC_GPIO0_EDGE + i)); |
| 604 |
|
| 605 |
return dev;
|
| 606 |
} |
| 607 |
|
| 608 |
static int strongarm_gpio_initfn(SysBusDevice *dev) |
| 609 |
{
|
| 610 |
StrongARMGPIOInfo *s; |
| 611 |
int i;
|
| 612 |
|
| 613 |
s = FROM_SYSBUS(StrongARMGPIOInfo, dev); |
| 614 |
|
| 615 |
qdev_init_gpio_in(&dev->qdev, strongarm_gpio_set, 28);
|
| 616 |
qdev_init_gpio_out(&dev->qdev, s->handler, 28);
|
| 617 |
|
| 618 |
memory_region_init_io(&s->iomem, &strongarm_gpio_ops, s, "gpio", 0x1000); |
| 619 |
|
| 620 |
sysbus_init_mmio_region(dev, &s->iomem); |
| 621 |
for (i = 0; i < 11; i++) { |
| 622 |
sysbus_init_irq(dev, &s->irqs[i]); |
| 623 |
} |
| 624 |
sysbus_init_irq(dev, &s->irqX); |
| 625 |
|
| 626 |
return 0; |
| 627 |
} |
| 628 |
|
| 629 |
static const VMStateDescription vmstate_strongarm_gpio_regs = { |
| 630 |
.name = "strongarm-gpio",
|
| 631 |
.version_id = 0,
|
| 632 |
.minimum_version_id = 0,
|
| 633 |
.minimum_version_id_old = 0,
|
| 634 |
.fields = (VMStateField[]) {
|
| 635 |
VMSTATE_UINT32(ilevel, StrongARMGPIOInfo), |
| 636 |
VMSTATE_UINT32(olevel, StrongARMGPIOInfo), |
| 637 |
VMSTATE_UINT32(dir, StrongARMGPIOInfo), |
| 638 |
VMSTATE_UINT32(rising, StrongARMGPIOInfo), |
| 639 |
VMSTATE_UINT32(falling, StrongARMGPIOInfo), |
| 640 |
VMSTATE_UINT32(status, StrongARMGPIOInfo), |
| 641 |
VMSTATE_UINT32(gafr, StrongARMGPIOInfo), |
| 642 |
VMSTATE_END_OF_LIST(), |
| 643 |
}, |
| 644 |
}; |
| 645 |
|
| 646 |
static SysBusDeviceInfo strongarm_gpio_info = {
|
| 647 |
.init = strongarm_gpio_initfn, |
| 648 |
.qdev.name = "strongarm-gpio",
|
| 649 |
.qdev.desc = "StrongARM GPIO controller",
|
| 650 |
.qdev.size = sizeof(StrongARMGPIOInfo),
|
| 651 |
}; |
| 652 |
|
| 653 |
/* Peripheral Pin Controller */
|
| 654 |
#define PPDR 0x00 |
| 655 |
#define PPSR 0x04 |
| 656 |
#define PPAR 0x08 |
| 657 |
#define PSDR 0x0c |
| 658 |
#define PPFR 0x10 |
| 659 |
|
| 660 |
typedef struct StrongARMPPCInfo StrongARMPPCInfo; |
| 661 |
struct StrongARMPPCInfo {
|
| 662 |
SysBusDevice busdev; |
| 663 |
MemoryRegion iomem; |
| 664 |
qemu_irq handler[28];
|
| 665 |
|
| 666 |
uint32_t ilevel; |
| 667 |
uint32_t olevel; |
| 668 |
uint32_t dir; |
| 669 |
uint32_t ppar; |
| 670 |
uint32_t psdr; |
| 671 |
uint32_t ppfr; |
| 672 |
|
| 673 |
uint32_t prev_level; |
| 674 |
}; |
| 675 |
|
| 676 |
static void strongarm_ppc_set(void *opaque, int line, int level) |
| 677 |
{
|
| 678 |
StrongARMPPCInfo *s = opaque; |
| 679 |
|
| 680 |
if (level) {
|
| 681 |
s->ilevel |= 1 << line;
|
| 682 |
} else {
|
| 683 |
s->ilevel &= ~(1 << line);
|
| 684 |
} |
| 685 |
} |
| 686 |
|
| 687 |
static void strongarm_ppc_handler_update(StrongARMPPCInfo *s) |
| 688 |
{
|
| 689 |
uint32_t level, diff; |
| 690 |
int bit;
|
| 691 |
|
| 692 |
level = s->olevel & s->dir; |
| 693 |
|
| 694 |
for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) { |
| 695 |
bit = ffs(diff) - 1;
|
| 696 |
qemu_set_irq(s->handler[bit], (level >> bit) & 1);
|
| 697 |
} |
| 698 |
|
| 699 |
s->prev_level = level; |
| 700 |
} |
| 701 |
|
| 702 |
static uint64_t strongarm_ppc_read(void *opaque, target_phys_addr_t offset, |
| 703 |
unsigned size)
|
| 704 |
{
|
| 705 |
StrongARMPPCInfo *s = opaque; |
| 706 |
|
| 707 |
switch (offset) {
|
| 708 |
case PPDR: /* PPC Pin Direction registers */ |
| 709 |
return s->dir | ~0x3fffff; |
| 710 |
|
| 711 |
case PPSR: /* PPC Pin State registers */ |
| 712 |
return (s->olevel & s->dir) |
|
| 713 |
(s->ilevel & ~s->dir) | |
| 714 |
~0x3fffff;
|
| 715 |
|
| 716 |
case PPAR:
|
| 717 |
return s->ppar | ~0x41000; |
| 718 |
|
| 719 |
case PSDR:
|
| 720 |
return s->psdr;
|
| 721 |
|
| 722 |
case PPFR:
|
| 723 |
return s->ppfr | ~0x7f001; |
| 724 |
|
| 725 |
default:
|
| 726 |
printf("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset); |
| 727 |
} |
| 728 |
|
| 729 |
return 0; |
| 730 |
} |
| 731 |
|
| 732 |
static void strongarm_ppc_write(void *opaque, target_phys_addr_t offset, |
| 733 |
uint64_t value, unsigned size)
|
| 734 |
{
|
| 735 |
StrongARMPPCInfo *s = opaque; |
| 736 |
|
| 737 |
switch (offset) {
|
| 738 |
case PPDR: /* PPC Pin Direction registers */ |
| 739 |
s->dir = value & 0x3fffff;
|
| 740 |
strongarm_ppc_handler_update(s); |
| 741 |
break;
|
| 742 |
|
| 743 |
case PPSR: /* PPC Pin State registers */ |
| 744 |
s->olevel = value & s->dir & 0x3fffff;
|
| 745 |
strongarm_ppc_handler_update(s); |
| 746 |
break;
|
| 747 |
|
| 748 |
case PPAR:
|
| 749 |
s->ppar = value & 0x41000;
|
| 750 |
break;
|
| 751 |
|
| 752 |
case PSDR:
|
| 753 |
s->psdr = value & 0x3fffff;
|
| 754 |
break;
|
| 755 |
|
| 756 |
case PPFR:
|
| 757 |
s->ppfr = value & 0x7f001;
|
| 758 |
break;
|
| 759 |
|
| 760 |
default:
|
| 761 |
printf("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset); |
| 762 |
} |
| 763 |
} |
| 764 |
|
| 765 |
static const MemoryRegionOps strongarm_ppc_ops = { |
| 766 |
.read = strongarm_ppc_read, |
| 767 |
.write = strongarm_ppc_write, |
| 768 |
.endianness = DEVICE_NATIVE_ENDIAN, |
| 769 |
}; |
| 770 |
|
| 771 |
static int strongarm_ppc_init(SysBusDevice *dev) |
| 772 |
{
|
| 773 |
StrongARMPPCInfo *s; |
| 774 |
|
| 775 |
s = FROM_SYSBUS(StrongARMPPCInfo, dev); |
| 776 |
|
| 777 |
qdev_init_gpio_in(&dev->qdev, strongarm_ppc_set, 22);
|
| 778 |
qdev_init_gpio_out(&dev->qdev, s->handler, 22);
|
| 779 |
|
| 780 |
memory_region_init_io(&s->iomem, &strongarm_ppc_ops, s, "ppc", 0x1000); |
| 781 |
|
| 782 |
sysbus_init_mmio_region(dev, &s->iomem); |
| 783 |
|
| 784 |
return 0; |
| 785 |
} |
| 786 |
|
| 787 |
static const VMStateDescription vmstate_strongarm_ppc_regs = { |
| 788 |
.name = "strongarm-ppc",
|
| 789 |
.version_id = 0,
|
| 790 |
.minimum_version_id = 0,
|
| 791 |
.minimum_version_id_old = 0,
|
| 792 |
.fields = (VMStateField[]) {
|
| 793 |
VMSTATE_UINT32(ilevel, StrongARMPPCInfo), |
| 794 |
VMSTATE_UINT32(olevel, StrongARMPPCInfo), |
| 795 |
VMSTATE_UINT32(dir, StrongARMPPCInfo), |
| 796 |
VMSTATE_UINT32(ppar, StrongARMPPCInfo), |
| 797 |
VMSTATE_UINT32(psdr, StrongARMPPCInfo), |
| 798 |
VMSTATE_UINT32(ppfr, StrongARMPPCInfo), |
| 799 |
VMSTATE_END_OF_LIST(), |
| 800 |
}, |
| 801 |
}; |
| 802 |
|
| 803 |
static SysBusDeviceInfo strongarm_ppc_info = {
|
| 804 |
.init = strongarm_ppc_init, |
| 805 |
.qdev.name = "strongarm-ppc",
|
| 806 |
.qdev.desc = "StrongARM PPC controller",
|
| 807 |
.qdev.size = sizeof(StrongARMPPCInfo),
|
| 808 |
}; |
| 809 |
|
| 810 |
/* UART Ports */
|
| 811 |
#define UTCR0 0x00 |
| 812 |
#define UTCR1 0x04 |
| 813 |
#define UTCR2 0x08 |
| 814 |
#define UTCR3 0x0c |
| 815 |
#define UTDR 0x14 |
| 816 |
#define UTSR0 0x1c |
| 817 |
#define UTSR1 0x20 |
| 818 |
|
| 819 |
#define UTCR0_PE (1 << 0) /* Parity enable */ |
| 820 |
#define UTCR0_OES (1 << 1) /* Even parity */ |
| 821 |
#define UTCR0_SBS (1 << 2) /* 2 stop bits */ |
| 822 |
#define UTCR0_DSS (1 << 3) /* 8-bit data */ |
| 823 |
|
| 824 |
#define UTCR3_RXE (1 << 0) /* Rx enable */ |
| 825 |
#define UTCR3_TXE (1 << 1) /* Tx enable */ |
| 826 |
#define UTCR3_BRK (1 << 2) /* Force Break */ |
| 827 |
#define UTCR3_RIE (1 << 3) /* Rx int enable */ |
| 828 |
#define UTCR3_TIE (1 << 4) /* Tx int enable */ |
| 829 |
#define UTCR3_LBM (1 << 5) /* Loopback */ |
| 830 |
|
| 831 |
#define UTSR0_TFS (1 << 0) /* Tx FIFO nearly empty */ |
| 832 |
#define UTSR0_RFS (1 << 1) /* Rx FIFO nearly full */ |
| 833 |
#define UTSR0_RID (1 << 2) /* Receiver Idle */ |
| 834 |
#define UTSR0_RBB (1 << 3) /* Receiver begin break */ |
| 835 |
#define UTSR0_REB (1 << 4) /* Receiver end break */ |
| 836 |
#define UTSR0_EIF (1 << 5) /* Error in FIFO */ |
| 837 |
|
| 838 |
#define UTSR1_RNE (1 << 1) /* Receive FIFO not empty */ |
| 839 |
#define UTSR1_TNF (1 << 2) /* Transmit FIFO not full */ |
| 840 |
#define UTSR1_PRE (1 << 3) /* Parity error */ |
| 841 |
#define UTSR1_FRE (1 << 4) /* Frame error */ |
| 842 |
#define UTSR1_ROR (1 << 5) /* Receive Over Run */ |
| 843 |
|
| 844 |
#define RX_FIFO_PRE (1 << 8) |
| 845 |
#define RX_FIFO_FRE (1 << 9) |
| 846 |
#define RX_FIFO_ROR (1 << 10) |
| 847 |
|
| 848 |
typedef struct { |
| 849 |
SysBusDevice busdev; |
| 850 |
MemoryRegion iomem; |
| 851 |
CharDriverState *chr; |
| 852 |
qemu_irq irq; |
| 853 |
|
| 854 |
uint8_t utcr0; |
| 855 |
uint16_t brd; |
| 856 |
uint8_t utcr3; |
| 857 |
uint8_t utsr0; |
| 858 |
uint8_t utsr1; |
| 859 |
|
| 860 |
uint8_t tx_fifo[8];
|
| 861 |
uint8_t tx_start; |
| 862 |
uint8_t tx_len; |
| 863 |
uint16_t rx_fifo[12]; /* value + error flags in high bits */ |
| 864 |
uint8_t rx_start; |
| 865 |
uint8_t rx_len; |
| 866 |
|
| 867 |
uint64_t char_transmit_time; /* time to transmit a char in ticks*/
|
| 868 |
bool wait_break_end;
|
| 869 |
QEMUTimer *rx_timeout_timer; |
| 870 |
QEMUTimer *tx_timer; |
| 871 |
} StrongARMUARTState; |
| 872 |
|
| 873 |
static void strongarm_uart_update_status(StrongARMUARTState *s) |
| 874 |
{
|
| 875 |
uint16_t utsr1 = 0;
|
| 876 |
|
| 877 |
if (s->tx_len != 8) { |
| 878 |
utsr1 |= UTSR1_TNF; |
| 879 |
} |
| 880 |
|
| 881 |
if (s->rx_len != 0) { |
| 882 |
uint16_t ent = s->rx_fifo[s->rx_start]; |
| 883 |
|
| 884 |
utsr1 |= UTSR1_RNE; |
| 885 |
if (ent & RX_FIFO_PRE) {
|
| 886 |
s->utsr1 |= UTSR1_PRE; |
| 887 |
} |
| 888 |
if (ent & RX_FIFO_FRE) {
|
| 889 |
s->utsr1 |= UTSR1_FRE; |
| 890 |
} |
| 891 |
if (ent & RX_FIFO_ROR) {
|
| 892 |
s->utsr1 |= UTSR1_ROR; |
| 893 |
} |
| 894 |
} |
| 895 |
|
| 896 |
s->utsr1 = utsr1; |
| 897 |
} |
| 898 |
|
| 899 |
static void strongarm_uart_update_int_status(StrongARMUARTState *s) |
| 900 |
{
|
| 901 |
uint16_t utsr0 = s->utsr0 & |
| 902 |
(UTSR0_REB | UTSR0_RBB | UTSR0_RID); |
| 903 |
int i;
|
| 904 |
|
| 905 |
if ((s->utcr3 & UTCR3_TXE) &&
|
| 906 |
(s->utcr3 & UTCR3_TIE) && |
| 907 |
s->tx_len <= 4) {
|
| 908 |
utsr0 |= UTSR0_TFS; |
| 909 |
} |
| 910 |
|
| 911 |
if ((s->utcr3 & UTCR3_RXE) &&
|
| 912 |
(s->utcr3 & UTCR3_RIE) && |
| 913 |
s->rx_len > 4) {
|
| 914 |
utsr0 |= UTSR0_RFS; |
| 915 |
} |
| 916 |
|
| 917 |
for (i = 0; i < s->rx_len && i < 4; i++) |
| 918 |
if (s->rx_fifo[(s->rx_start + i) % 12] & ~0xff) { |
| 919 |
utsr0 |= UTSR0_EIF; |
| 920 |
break;
|
| 921 |
} |
| 922 |
|
| 923 |
s->utsr0 = utsr0; |
| 924 |
qemu_set_irq(s->irq, utsr0); |
| 925 |
} |
| 926 |
|
| 927 |
static void strongarm_uart_update_parameters(StrongARMUARTState *s) |
| 928 |
{
|
| 929 |
int speed, parity, data_bits, stop_bits, frame_size;
|
| 930 |
QEMUSerialSetParams ssp; |
| 931 |
|
| 932 |
/* Start bit. */
|
| 933 |
frame_size = 1;
|
| 934 |
if (s->utcr0 & UTCR0_PE) {
|
| 935 |
/* Parity bit. */
|
| 936 |
frame_size++; |
| 937 |
if (s->utcr0 & UTCR0_OES) {
|
| 938 |
parity = 'E';
|
| 939 |
} else {
|
| 940 |
parity = 'O';
|
| 941 |
} |
| 942 |
} else {
|
| 943 |
parity = 'N';
|
| 944 |
} |
| 945 |
if (s->utcr0 & UTCR0_SBS) {
|
| 946 |
stop_bits = 2;
|
| 947 |
} else {
|
| 948 |
stop_bits = 1;
|
| 949 |
} |
| 950 |
|
| 951 |
data_bits = (s->utcr0 & UTCR0_DSS) ? 8 : 7; |
| 952 |
frame_size += data_bits + stop_bits; |
| 953 |
speed = 3686400 / 16 / (s->brd + 1); |
| 954 |
ssp.speed = speed; |
| 955 |
ssp.parity = parity; |
| 956 |
ssp.data_bits = data_bits; |
| 957 |
ssp.stop_bits = stop_bits; |
| 958 |
s->char_transmit_time = (get_ticks_per_sec() / speed) * frame_size; |
| 959 |
if (s->chr) {
|
| 960 |
qemu_chr_fe_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp); |
| 961 |
} |
| 962 |
|
| 963 |
DPRINTF(stderr, "%s speed=%d parity=%c data=%d stop=%d\n", s->chr->label,
|
| 964 |
speed, parity, data_bits, stop_bits); |
| 965 |
} |
| 966 |
|
| 967 |
static void strongarm_uart_rx_to(void *opaque) |
| 968 |
{
|
| 969 |
StrongARMUARTState *s = opaque; |
| 970 |
|
| 971 |
if (s->rx_len) {
|
| 972 |
s->utsr0 |= UTSR0_RID; |
| 973 |
strongarm_uart_update_int_status(s); |
| 974 |
} |
| 975 |
} |
| 976 |
|
| 977 |
static void strongarm_uart_rx_push(StrongARMUARTState *s, uint16_t c) |
| 978 |
{
|
| 979 |
if ((s->utcr3 & UTCR3_RXE) == 0) { |
| 980 |
/* rx disabled */
|
| 981 |
return;
|
| 982 |
} |
| 983 |
|
| 984 |
if (s->wait_break_end) {
|
| 985 |
s->utsr0 |= UTSR0_REB; |
| 986 |
s->wait_break_end = false;
|
| 987 |
} |
| 988 |
|
| 989 |
if (s->rx_len < 12) { |
| 990 |
s->rx_fifo[(s->rx_start + s->rx_len) % 12] = c;
|
| 991 |
s->rx_len++; |
| 992 |
} else
|
| 993 |
s->rx_fifo[(s->rx_start + 11) % 12] |= RX_FIFO_ROR; |
| 994 |
} |
| 995 |
|
| 996 |
static int strongarm_uart_can_receive(void *opaque) |
| 997 |
{
|
| 998 |
StrongARMUARTState *s = opaque; |
| 999 |
|
| 1000 |
if (s->rx_len == 12) { |
| 1001 |
return 0; |
| 1002 |
} |
| 1003 |
/* It's best not to get more than 2/3 of RX FIFO, so advertise that much */
|
| 1004 |
if (s->rx_len < 8) { |
| 1005 |
return 8 - s->rx_len; |
| 1006 |
} |
| 1007 |
return 1; |
| 1008 |
} |
| 1009 |
|
| 1010 |
static void strongarm_uart_receive(void *opaque, const uint8_t *buf, int size) |
| 1011 |
{
|
| 1012 |
StrongARMUARTState *s = opaque; |
| 1013 |
int i;
|
| 1014 |
|
| 1015 |
for (i = 0; i < size; i++) { |
| 1016 |
strongarm_uart_rx_push(s, buf[i]); |
| 1017 |
} |
| 1018 |
|
| 1019 |
/* call the timeout receive callback in 3 char transmit time */
|
| 1020 |
qemu_mod_timer(s->rx_timeout_timer, |
| 1021 |
qemu_get_clock_ns(vm_clock) + s->char_transmit_time * 3);
|
| 1022 |
|
| 1023 |
strongarm_uart_update_status(s); |
| 1024 |
strongarm_uart_update_int_status(s); |
| 1025 |
} |
| 1026 |
|
| 1027 |
static void strongarm_uart_event(void *opaque, int event) |
| 1028 |
{
|
| 1029 |
StrongARMUARTState *s = opaque; |
| 1030 |
if (event == CHR_EVENT_BREAK) {
|
| 1031 |
s->utsr0 |= UTSR0_RBB; |
| 1032 |
strongarm_uart_rx_push(s, RX_FIFO_FRE); |
| 1033 |
s->wait_break_end = true;
|
| 1034 |
strongarm_uart_update_status(s); |
| 1035 |
strongarm_uart_update_int_status(s); |
| 1036 |
} |
| 1037 |
} |
| 1038 |
|
| 1039 |
static void strongarm_uart_tx(void *opaque) |
| 1040 |
{
|
| 1041 |
StrongARMUARTState *s = opaque; |
| 1042 |
uint64_t new_xmit_ts = qemu_get_clock_ns(vm_clock); |
| 1043 |
|
| 1044 |
if (s->utcr3 & UTCR3_LBM) /* loopback */ { |
| 1045 |
strongarm_uart_receive(s, &s->tx_fifo[s->tx_start], 1);
|
| 1046 |
} else if (s->chr) { |
| 1047 |
qemu_chr_fe_write(s->chr, &s->tx_fifo[s->tx_start], 1);
|
| 1048 |
} |
| 1049 |
|
| 1050 |
s->tx_start = (s->tx_start + 1) % 8; |
| 1051 |
s->tx_len--; |
| 1052 |
if (s->tx_len) {
|
| 1053 |
qemu_mod_timer(s->tx_timer, new_xmit_ts + s->char_transmit_time); |
| 1054 |
} |
| 1055 |
strongarm_uart_update_status(s); |
| 1056 |
strongarm_uart_update_int_status(s); |
| 1057 |
} |
| 1058 |
|
| 1059 |
static uint64_t strongarm_uart_read(void *opaque, target_phys_addr_t addr, |
| 1060 |
unsigned size)
|
| 1061 |
{
|
| 1062 |
StrongARMUARTState *s = opaque; |
| 1063 |
uint16_t ret; |
| 1064 |
|
| 1065 |
switch (addr) {
|
| 1066 |
case UTCR0:
|
| 1067 |
return s->utcr0;
|
| 1068 |
|
| 1069 |
case UTCR1:
|
| 1070 |
return s->brd >> 8; |
| 1071 |
|
| 1072 |
case UTCR2:
|
| 1073 |
return s->brd & 0xff; |
| 1074 |
|
| 1075 |
case UTCR3:
|
| 1076 |
return s->utcr3;
|
| 1077 |
|
| 1078 |
case UTDR:
|
| 1079 |
if (s->rx_len != 0) { |
| 1080 |
ret = s->rx_fifo[s->rx_start]; |
| 1081 |
s->rx_start = (s->rx_start + 1) % 12; |
| 1082 |
s->rx_len--; |
| 1083 |
strongarm_uart_update_status(s); |
| 1084 |
strongarm_uart_update_int_status(s); |
| 1085 |
return ret;
|
| 1086 |
} |
| 1087 |
return 0; |
| 1088 |
|
| 1089 |
case UTSR0:
|
| 1090 |
return s->utsr0;
|
| 1091 |
|
| 1092 |
case UTSR1:
|
| 1093 |
return s->utsr1;
|
| 1094 |
|
| 1095 |
default:
|
| 1096 |
printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr); |
| 1097 |
return 0; |
| 1098 |
} |
| 1099 |
} |
| 1100 |
|
| 1101 |
static void strongarm_uart_write(void *opaque, target_phys_addr_t addr, |
| 1102 |
uint64_t value, unsigned size)
|
| 1103 |
{
|
| 1104 |
StrongARMUARTState *s = opaque; |
| 1105 |
|
| 1106 |
switch (addr) {
|
| 1107 |
case UTCR0:
|
| 1108 |
s->utcr0 = value & 0x7f;
|
| 1109 |
strongarm_uart_update_parameters(s); |
| 1110 |
break;
|
| 1111 |
|
| 1112 |
case UTCR1:
|
| 1113 |
s->brd = (s->brd & 0xff) | ((value & 0xf) << 8); |
| 1114 |
strongarm_uart_update_parameters(s); |
| 1115 |
break;
|
| 1116 |
|
| 1117 |
case UTCR2:
|
| 1118 |
s->brd = (s->brd & 0xf00) | (value & 0xff); |
| 1119 |
strongarm_uart_update_parameters(s); |
| 1120 |
break;
|
| 1121 |
|
| 1122 |
case UTCR3:
|
| 1123 |
s->utcr3 = value & 0x3f;
|
| 1124 |
if ((s->utcr3 & UTCR3_RXE) == 0) { |
| 1125 |
s->rx_len = 0;
|
| 1126 |
} |
| 1127 |
if ((s->utcr3 & UTCR3_TXE) == 0) { |
| 1128 |
s->tx_len = 0;
|
| 1129 |
} |
| 1130 |
strongarm_uart_update_status(s); |
| 1131 |
strongarm_uart_update_int_status(s); |
| 1132 |
break;
|
| 1133 |
|
| 1134 |
case UTDR:
|
| 1135 |
if ((s->utcr3 & UTCR3_TXE) && s->tx_len != 8) { |
| 1136 |
s->tx_fifo[(s->tx_start + s->tx_len) % 8] = value;
|
| 1137 |
s->tx_len++; |
| 1138 |
strongarm_uart_update_status(s); |
| 1139 |
strongarm_uart_update_int_status(s); |
| 1140 |
if (s->tx_len == 1) { |
| 1141 |
strongarm_uart_tx(s); |
| 1142 |
} |
| 1143 |
} |
| 1144 |
break;
|
| 1145 |
|
| 1146 |
case UTSR0:
|
| 1147 |
s->utsr0 = s->utsr0 & ~(value & |
| 1148 |
(UTSR0_REB | UTSR0_RBB | UTSR0_RID)); |
| 1149 |
strongarm_uart_update_int_status(s); |
| 1150 |
break;
|
| 1151 |
|
| 1152 |
default:
|
| 1153 |
printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr); |
| 1154 |
} |
| 1155 |
} |
| 1156 |
|
| 1157 |
static const MemoryRegionOps strongarm_uart_ops = { |
| 1158 |
.read = strongarm_uart_read, |
| 1159 |
.write = strongarm_uart_write, |
| 1160 |
.endianness = DEVICE_NATIVE_ENDIAN, |
| 1161 |
}; |
| 1162 |
|
| 1163 |
static int strongarm_uart_init(SysBusDevice *dev) |
| 1164 |
{
|
| 1165 |
StrongARMUARTState *s = FROM_SYSBUS(StrongARMUARTState, dev); |
| 1166 |
|
| 1167 |
memory_region_init_io(&s->iomem, &strongarm_uart_ops, s, "uart", 0x10000); |
| 1168 |
sysbus_init_mmio_region(dev, &s->iomem); |
| 1169 |
sysbus_init_irq(dev, &s->irq); |
| 1170 |
|
| 1171 |
s->rx_timeout_timer = qemu_new_timer_ns(vm_clock, strongarm_uart_rx_to, s); |
| 1172 |
s->tx_timer = qemu_new_timer_ns(vm_clock, strongarm_uart_tx, s); |
| 1173 |
|
| 1174 |
if (s->chr) {
|
| 1175 |
qemu_chr_add_handlers(s->chr, |
| 1176 |
strongarm_uart_can_receive, |
| 1177 |
strongarm_uart_receive, |
| 1178 |
strongarm_uart_event, |
| 1179 |
s); |
| 1180 |
} |
| 1181 |
|
| 1182 |
return 0; |
| 1183 |
} |
| 1184 |
|
| 1185 |
static void strongarm_uart_reset(DeviceState *dev) |
| 1186 |
{
|
| 1187 |
StrongARMUARTState *s = DO_UPCAST(StrongARMUARTState, busdev.qdev, dev); |
| 1188 |
|
| 1189 |
s->utcr0 = UTCR0_DSS; /* 8 data, no parity */
|
| 1190 |
s->brd = 23; /* 9600 */ |
| 1191 |
/* enable send & recv - this actually violates spec */
|
| 1192 |
s->utcr3 = UTCR3_TXE | UTCR3_RXE; |
| 1193 |
|
| 1194 |
s->rx_len = s->tx_len = 0;
|
| 1195 |
|
| 1196 |
strongarm_uart_update_parameters(s); |
| 1197 |
strongarm_uart_update_status(s); |
| 1198 |
strongarm_uart_update_int_status(s); |
| 1199 |
} |
| 1200 |
|
| 1201 |
static int strongarm_uart_post_load(void *opaque, int version_id) |
| 1202 |
{
|
| 1203 |
StrongARMUARTState *s = opaque; |
| 1204 |
|
| 1205 |
strongarm_uart_update_parameters(s); |
| 1206 |
strongarm_uart_update_status(s); |
| 1207 |
strongarm_uart_update_int_status(s); |
| 1208 |
|
| 1209 |
/* tx and restart timer */
|
| 1210 |
if (s->tx_len) {
|
| 1211 |
strongarm_uart_tx(s); |
| 1212 |
} |
| 1213 |
|
| 1214 |
/* restart rx timeout timer */
|
| 1215 |
if (s->rx_len) {
|
| 1216 |
qemu_mod_timer(s->rx_timeout_timer, |
| 1217 |
qemu_get_clock_ns(vm_clock) + s->char_transmit_time * 3);
|
| 1218 |
} |
| 1219 |
|
| 1220 |
return 0; |
| 1221 |
} |
| 1222 |
|
| 1223 |
static const VMStateDescription vmstate_strongarm_uart_regs = { |
| 1224 |
.name = "strongarm-uart",
|
| 1225 |
.version_id = 0,
|
| 1226 |
.minimum_version_id = 0,
|
| 1227 |
.minimum_version_id_old = 0,
|
| 1228 |
.post_load = strongarm_uart_post_load, |
| 1229 |
.fields = (VMStateField[]) {
|
| 1230 |
VMSTATE_UINT8(utcr0, StrongARMUARTState), |
| 1231 |
VMSTATE_UINT16(brd, StrongARMUARTState), |
| 1232 |
VMSTATE_UINT8(utcr3, StrongARMUARTState), |
| 1233 |
VMSTATE_UINT8(utsr0, StrongARMUARTState), |
| 1234 |
VMSTATE_UINT8_ARRAY(tx_fifo, StrongARMUARTState, 8),
|
| 1235 |
VMSTATE_UINT8(tx_start, StrongARMUARTState), |
| 1236 |
VMSTATE_UINT8(tx_len, StrongARMUARTState), |
| 1237 |
VMSTATE_UINT16_ARRAY(rx_fifo, StrongARMUARTState, 12),
|
| 1238 |
VMSTATE_UINT8(rx_start, StrongARMUARTState), |
| 1239 |
VMSTATE_UINT8(rx_len, StrongARMUARTState), |
| 1240 |
VMSTATE_BOOL(wait_break_end, StrongARMUARTState), |
| 1241 |
VMSTATE_END_OF_LIST(), |
| 1242 |
}, |
| 1243 |
}; |
| 1244 |
|
| 1245 |
static SysBusDeviceInfo strongarm_uart_info = {
|
| 1246 |
.init = strongarm_uart_init, |
| 1247 |
.qdev.name = "strongarm-uart",
|
| 1248 |
.qdev.desc = "StrongARM UART controller",
|
| 1249 |
.qdev.size = sizeof(StrongARMUARTState),
|
| 1250 |
.qdev.reset = strongarm_uart_reset, |
| 1251 |
.qdev.vmsd = &vmstate_strongarm_uart_regs, |
| 1252 |
.qdev.props = (Property[]) {
|
| 1253 |
DEFINE_PROP_CHR("chardev", StrongARMUARTState, chr),
|
| 1254 |
DEFINE_PROP_END_OF_LIST(), |
| 1255 |
} |
| 1256 |
}; |
| 1257 |
|
| 1258 |
/* Synchronous Serial Ports */
|
| 1259 |
typedef struct { |
| 1260 |
SysBusDevice busdev; |
| 1261 |
MemoryRegion iomem; |
| 1262 |
qemu_irq irq; |
| 1263 |
SSIBus *bus; |
| 1264 |
|
| 1265 |
uint16_t sscr[2];
|
| 1266 |
uint16_t sssr; |
| 1267 |
|
| 1268 |
uint16_t rx_fifo[8];
|
| 1269 |
uint8_t rx_level; |
| 1270 |
uint8_t rx_start; |
| 1271 |
} StrongARMSSPState; |
| 1272 |
|
| 1273 |
#define SSCR0 0x60 /* SSP Control register 0 */ |
| 1274 |
#define SSCR1 0x64 /* SSP Control register 1 */ |
| 1275 |
#define SSDR 0x6c /* SSP Data register */ |
| 1276 |
#define SSSR 0x74 /* SSP Status register */ |
| 1277 |
|
| 1278 |
/* Bitfields for above registers */
|
| 1279 |
#define SSCR0_SPI(x) (((x) & 0x30) == 0x00) |
| 1280 |
#define SSCR0_SSP(x) (((x) & 0x30) == 0x10) |
| 1281 |
#define SSCR0_UWIRE(x) (((x) & 0x30) == 0x20) |
| 1282 |
#define SSCR0_PSP(x) (((x) & 0x30) == 0x30) |
| 1283 |
#define SSCR0_SSE (1 << 7) |
| 1284 |
#define SSCR0_DSS(x) (((x) & 0xf) + 1) |
| 1285 |
#define SSCR1_RIE (1 << 0) |
| 1286 |
#define SSCR1_TIE (1 << 1) |
| 1287 |
#define SSCR1_LBM (1 << 2) |
| 1288 |
#define SSSR_TNF (1 << 2) |
| 1289 |
#define SSSR_RNE (1 << 3) |
| 1290 |
#define SSSR_TFS (1 << 5) |
| 1291 |
#define SSSR_RFS (1 << 6) |
| 1292 |
#define SSSR_ROR (1 << 7) |
| 1293 |
#define SSSR_RW 0x0080 |
| 1294 |
|
| 1295 |
static void strongarm_ssp_int_update(StrongARMSSPState *s) |
| 1296 |
{
|
| 1297 |
int level = 0; |
| 1298 |
|
| 1299 |
level |= (s->sssr & SSSR_ROR); |
| 1300 |
level |= (s->sssr & SSSR_RFS) && (s->sscr[1] & SSCR1_RIE);
|
| 1301 |
level |= (s->sssr & SSSR_TFS) && (s->sscr[1] & SSCR1_TIE);
|
| 1302 |
qemu_set_irq(s->irq, level); |
| 1303 |
} |
| 1304 |
|
| 1305 |
static void strongarm_ssp_fifo_update(StrongARMSSPState *s) |
| 1306 |
{
|
| 1307 |
s->sssr &= ~SSSR_TFS; |
| 1308 |
s->sssr &= ~SSSR_TNF; |
| 1309 |
if (s->sscr[0] & SSCR0_SSE) { |
| 1310 |
if (s->rx_level >= 4) { |
| 1311 |
s->sssr |= SSSR_RFS; |
| 1312 |
} else {
|
| 1313 |
s->sssr &= ~SSSR_RFS; |
| 1314 |
} |
| 1315 |
if (s->rx_level) {
|
| 1316 |
s->sssr |= SSSR_RNE; |
| 1317 |
} else {
|
| 1318 |
s->sssr &= ~SSSR_RNE; |
| 1319 |
} |
| 1320 |
/* TX FIFO is never filled, so it is always in underrun
|
| 1321 |
condition if SSP is enabled */
|
| 1322 |
s->sssr |= SSSR_TFS; |
| 1323 |
s->sssr |= SSSR_TNF; |
| 1324 |
} |
| 1325 |
|
| 1326 |
strongarm_ssp_int_update(s); |
| 1327 |
} |
| 1328 |
|
| 1329 |
static uint64_t strongarm_ssp_read(void *opaque, target_phys_addr_t addr, |
| 1330 |
unsigned size)
|
| 1331 |
{
|
| 1332 |
StrongARMSSPState *s = opaque; |
| 1333 |
uint32_t retval; |
| 1334 |
|
| 1335 |
switch (addr) {
|
| 1336 |
case SSCR0:
|
| 1337 |
return s->sscr[0]; |
| 1338 |
case SSCR1:
|
| 1339 |
return s->sscr[1]; |
| 1340 |
case SSSR:
|
| 1341 |
return s->sssr;
|
| 1342 |
case SSDR:
|
| 1343 |
if (~s->sscr[0] & SSCR0_SSE) { |
| 1344 |
return 0xffffffff; |
| 1345 |
} |
| 1346 |
if (s->rx_level < 1) { |
| 1347 |
printf("%s: SSP Rx Underrun\n", __func__);
|
| 1348 |
return 0xffffffff; |
| 1349 |
} |
| 1350 |
s->rx_level--; |
| 1351 |
retval = s->rx_fifo[s->rx_start++]; |
| 1352 |
s->rx_start &= 0x7;
|
| 1353 |
strongarm_ssp_fifo_update(s); |
| 1354 |
return retval;
|
| 1355 |
default:
|
| 1356 |
printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr); |
| 1357 |
break;
|
| 1358 |
} |
| 1359 |
return 0; |
| 1360 |
} |
| 1361 |
|
| 1362 |
static void strongarm_ssp_write(void *opaque, target_phys_addr_t addr, |
| 1363 |
uint64_t value, unsigned size)
|
| 1364 |
{
|
| 1365 |
StrongARMSSPState *s = opaque; |
| 1366 |
|
| 1367 |
switch (addr) {
|
| 1368 |
case SSCR0:
|
| 1369 |
s->sscr[0] = value & 0xffbf; |
| 1370 |
if ((s->sscr[0] & SSCR0_SSE) && SSCR0_DSS(value) < 4) { |
| 1371 |
printf("%s: Wrong data size: %i bits\n", __func__,
|
| 1372 |
(int)SSCR0_DSS(value));
|
| 1373 |
} |
| 1374 |
if (!(value & SSCR0_SSE)) {
|
| 1375 |
s->sssr = 0;
|
| 1376 |
s->rx_level = 0;
|
| 1377 |
} |
| 1378 |
strongarm_ssp_fifo_update(s); |
| 1379 |
break;
|
| 1380 |
|
| 1381 |
case SSCR1:
|
| 1382 |
s->sscr[1] = value & 0x2f; |
| 1383 |
if (value & SSCR1_LBM) {
|
| 1384 |
printf("%s: Attempt to use SSP LBM mode\n", __func__);
|
| 1385 |
} |
| 1386 |
strongarm_ssp_fifo_update(s); |
| 1387 |
break;
|
| 1388 |
|
| 1389 |
case SSSR:
|
| 1390 |
s->sssr &= ~(value & SSSR_RW); |
| 1391 |
strongarm_ssp_int_update(s); |
| 1392 |
break;
|
| 1393 |
|
| 1394 |
case SSDR:
|
| 1395 |
if (SSCR0_UWIRE(s->sscr[0])) { |
| 1396 |
value &= 0xff;
|
| 1397 |
} else
|
| 1398 |
/* Note how 32bits overflow does no harm here */
|
| 1399 |
value &= (1 << SSCR0_DSS(s->sscr[0])) - 1; |
| 1400 |
|
| 1401 |
/* Data goes from here to the Tx FIFO and is shifted out from
|
| 1402 |
* there directly to the slave, no need to buffer it.
|
| 1403 |
*/
|
| 1404 |
if (s->sscr[0] & SSCR0_SSE) { |
| 1405 |
uint32_t readval; |
| 1406 |
if (s->sscr[1] & SSCR1_LBM) { |
| 1407 |
readval = value; |
| 1408 |
} else {
|
| 1409 |
readval = ssi_transfer(s->bus, value); |
| 1410 |
} |
| 1411 |
|
| 1412 |
if (s->rx_level < 0x08) { |
| 1413 |
s->rx_fifo[(s->rx_start + s->rx_level++) & 0x7] = readval;
|
| 1414 |
} else {
|
| 1415 |
s->sssr |= SSSR_ROR; |
| 1416 |
} |
| 1417 |
} |
| 1418 |
strongarm_ssp_fifo_update(s); |
| 1419 |
break;
|
| 1420 |
|
| 1421 |
default:
|
| 1422 |
printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr); |
| 1423 |
break;
|
| 1424 |
} |
| 1425 |
} |
| 1426 |
|
| 1427 |
static const MemoryRegionOps strongarm_ssp_ops = { |
| 1428 |
.read = strongarm_ssp_read, |
| 1429 |
.write = strongarm_ssp_write, |
| 1430 |
.endianness = DEVICE_NATIVE_ENDIAN, |
| 1431 |
}; |
| 1432 |
|
| 1433 |
static int strongarm_ssp_post_load(void *opaque, int version_id) |
| 1434 |
{
|
| 1435 |
StrongARMSSPState *s = opaque; |
| 1436 |
|
| 1437 |
strongarm_ssp_fifo_update(s); |
| 1438 |
|
| 1439 |
return 0; |
| 1440 |
} |
| 1441 |
|
| 1442 |
static int strongarm_ssp_init(SysBusDevice *dev) |
| 1443 |
{
|
| 1444 |
StrongARMSSPState *s = FROM_SYSBUS(StrongARMSSPState, dev); |
| 1445 |
|
| 1446 |
sysbus_init_irq(dev, &s->irq); |
| 1447 |
|
| 1448 |
memory_region_init_io(&s->iomem, &strongarm_ssp_ops, s, "ssp", 0x1000); |
| 1449 |
sysbus_init_mmio_region(dev, &s->iomem); |
| 1450 |
|
| 1451 |
s->bus = ssi_create_bus(&dev->qdev, "ssi");
|
| 1452 |
return 0; |
| 1453 |
} |
| 1454 |
|
| 1455 |
static void strongarm_ssp_reset(DeviceState *dev) |
| 1456 |
{
|
| 1457 |
StrongARMSSPState *s = DO_UPCAST(StrongARMSSPState, busdev.qdev, dev); |
| 1458 |
s->sssr = 0x03; /* 3 bit data, SPI, disabled */ |
| 1459 |
s->rx_start = 0;
|
| 1460 |
s->rx_level = 0;
|
| 1461 |
} |
| 1462 |
|
| 1463 |
static const VMStateDescription vmstate_strongarm_ssp_regs = { |
| 1464 |
.name = "strongarm-ssp",
|
| 1465 |
.version_id = 0,
|
| 1466 |
.minimum_version_id = 0,
|
| 1467 |
.minimum_version_id_old = 0,
|
| 1468 |
.post_load = strongarm_ssp_post_load, |
| 1469 |
.fields = (VMStateField[]) {
|
| 1470 |
VMSTATE_UINT16_ARRAY(sscr, StrongARMSSPState, 2),
|
| 1471 |
VMSTATE_UINT16(sssr, StrongARMSSPState), |
| 1472 |
VMSTATE_UINT16_ARRAY(rx_fifo, StrongARMSSPState, 8),
|
| 1473 |
VMSTATE_UINT8(rx_start, StrongARMSSPState), |
| 1474 |
VMSTATE_UINT8(rx_level, StrongARMSSPState), |
| 1475 |
VMSTATE_END_OF_LIST(), |
| 1476 |
}, |
| 1477 |
}; |
| 1478 |
|
| 1479 |
static SysBusDeviceInfo strongarm_ssp_info = {
|
| 1480 |
.init = strongarm_ssp_init, |
| 1481 |
.qdev.name = "strongarm-ssp",
|
| 1482 |
.qdev.desc = "StrongARM SSP controller",
|
| 1483 |
.qdev.size = sizeof(StrongARMSSPState),
|
| 1484 |
.qdev.reset = strongarm_ssp_reset, |
| 1485 |
.qdev.vmsd = &vmstate_strongarm_ssp_regs, |
| 1486 |
}; |
| 1487 |
|
| 1488 |
/* Main CPU functions */
|
| 1489 |
StrongARMState *sa1110_init(MemoryRegion *sysmem, |
| 1490 |
unsigned int sdram_size, const char *rev) |
| 1491 |
{
|
| 1492 |
StrongARMState *s; |
| 1493 |
qemu_irq *pic; |
| 1494 |
int i;
|
| 1495 |
|
| 1496 |
s = g_malloc0(sizeof(StrongARMState));
|
| 1497 |
|
| 1498 |
if (!rev) {
|
| 1499 |
rev = "sa1110-b5";
|
| 1500 |
} |
| 1501 |
|
| 1502 |
if (strncmp(rev, "sa1110", 6)) { |
| 1503 |
error_report("Machine requires a SA1110 processor.");
|
| 1504 |
exit(1);
|
| 1505 |
} |
| 1506 |
|
| 1507 |
s->env = cpu_init(rev); |
| 1508 |
|
| 1509 |
if (!s->env) {
|
| 1510 |
error_report("Unable to find CPU definition");
|
| 1511 |
exit(1);
|
| 1512 |
} |
| 1513 |
|
| 1514 |
memory_region_init_ram(&s->sdram, NULL, "strongarm.sdram", sdram_size); |
| 1515 |
memory_region_add_subregion(sysmem, SA_SDCS0, &s->sdram); |
| 1516 |
|
| 1517 |
pic = arm_pic_init_cpu(s->env); |
| 1518 |
s->pic = sysbus_create_varargs("strongarm_pic", 0x90050000, |
| 1519 |
pic[ARM_PIC_CPU_IRQ], pic[ARM_PIC_CPU_FIQ], NULL);
|
| 1520 |
|
| 1521 |
sysbus_create_varargs("pxa25x-timer", 0x90000000, |
| 1522 |
qdev_get_gpio_in(s->pic, SA_PIC_OSTC0), |
| 1523 |
qdev_get_gpio_in(s->pic, SA_PIC_OSTC1), |
| 1524 |
qdev_get_gpio_in(s->pic, SA_PIC_OSTC2), |
| 1525 |
qdev_get_gpio_in(s->pic, SA_PIC_OSTC3), |
| 1526 |
NULL);
|
| 1527 |
|
| 1528 |
sysbus_create_simple("strongarm-rtc", 0x90010000, |
| 1529 |
qdev_get_gpio_in(s->pic, SA_PIC_RTC_ALARM)); |
| 1530 |
|
| 1531 |
s->gpio = strongarm_gpio_init(0x90040000, s->pic);
|
| 1532 |
|
| 1533 |
s->ppc = sysbus_create_varargs("strongarm-ppc", 0x90060000, NULL); |
| 1534 |
|
| 1535 |
for (i = 0; sa_serial[i].io_base; i++) { |
| 1536 |
DeviceState *dev = qdev_create(NULL, "strongarm-uart"); |
| 1537 |
qdev_prop_set_chr(dev, "chardev", serial_hds[i]);
|
| 1538 |
qdev_init_nofail(dev); |
| 1539 |
sysbus_mmio_map(sysbus_from_qdev(dev), 0,
|
| 1540 |
sa_serial[i].io_base); |
| 1541 |
sysbus_connect_irq(sysbus_from_qdev(dev), 0,
|
| 1542 |
qdev_get_gpio_in(s->pic, sa_serial[i].irq)); |
| 1543 |
} |
| 1544 |
|
| 1545 |
s->ssp = sysbus_create_varargs("strongarm-ssp", 0x80070000, |
| 1546 |
qdev_get_gpio_in(s->pic, SA_PIC_SSP), NULL);
|
| 1547 |
s->ssp_bus = (SSIBus *)qdev_get_child_bus(s->ssp, "ssi");
|
| 1548 |
|
| 1549 |
return s;
|
| 1550 |
} |
| 1551 |
|
| 1552 |
static void strongarm_register_devices(void) |
| 1553 |
{
|
| 1554 |
sysbus_register_withprop(&strongarm_pic_info); |
| 1555 |
sysbus_register_withprop(&strongarm_rtc_sysbus_info); |
| 1556 |
sysbus_register_withprop(&strongarm_gpio_info); |
| 1557 |
sysbus_register_withprop(&strongarm_ppc_info); |
| 1558 |
sysbus_register_withprop(&strongarm_uart_info); |
| 1559 |
sysbus_register_withprop(&strongarm_ssp_info); |
| 1560 |
} |
| 1561 |
device_init(strongarm_register_devices) |