symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/syborg_platform.c
author Mike Kinghan <mikek@symbian.org>
Wed, 04 Aug 2010 10:56:22 +0100
branchGCC_SURGE
changeset 91 07b904f40417
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Provisional fix for bug 3508 - Persistent storage support breaks Linux compatibility. Enables libnvmemmory.so to be built and dynamically linked on Linux and rom boot reports persistent storage image created OK, but ROM then crashes.
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/*
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 * Syborg platform device
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 *
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 * Copyright (c) 2008 CodeSourcery
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 */
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#include "hw.h"
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#include "syborg.h"
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#include "devtree.h"
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//#define DEBUG_SYBORG_PLATFORM
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#ifdef DEBUG_SYBORG_PLATFORM
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#define DPRINTF(fmt, args...) \
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do { printf("syborg_platform: " fmt , ##args); } while (0)
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#define BADF(fmt, args...) \
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do { fprintf(stderr, "syborg_platform: error: " fmt , ##args); exit(1);} while (0)
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#else
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#define DPRINTF(fmt, args...) do {} while(0)
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#define BADF(fmt, args...) \
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do { fprintf(stderr, "syborg_platform: error: " fmt , ##args);} while (0)
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#endif
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enum {
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    PLATFORM_ID         = 0,
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    PLATFORM_TREE_START = 1
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};
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#define PLATFORM_TREE_OFFSET  0x1000
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typedef struct {
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    QEMUDevice *qdev;
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} syborg_platform_state;
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static uint32_t syborg_platform_readl(void *opaque, target_phys_addr_t offset)
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{
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    offset &= 0xffffff;
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    if (offset >= PLATFORM_TREE_OFFSET) {
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        offset -= PLATFORM_TREE_OFFSET;
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        if (offset >= machine_devtree_size)
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            return 0;
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        return ldl_p((char *)machine_devtree + offset);
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    }
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    DPRINTF("read 0x%x\n", (int)offset);
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    switch(offset >> 2) {
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    case PLATFORM_ID:
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        return SYBORG_ID_PLATFORM;
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    case PLATFORM_TREE_START:
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        return PLATFORM_TREE_OFFSET;
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    default:
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        cpu_abort(cpu_single_env, "syborg_platform_read: Bad offset %x\n",
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                  (int)offset);
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        return 0;  
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    }
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}
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static uint32_t syborg_platform_readw(void *opaque, target_phys_addr_t offset)
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{
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    offset &= 0xffffff;
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    if (offset >= PLATFORM_TREE_OFFSET) {
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        offset -= PLATFORM_TREE_OFFSET;
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        if (offset >= machine_devtree_size)
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            return 0;
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        return lduw_p((char *)machine_devtree + offset);
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    }
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    cpu_abort(cpu_single_env, "syborg_platform_readw: Bad offset %x\n",
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              (int)offset);
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}
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static uint32_t syborg_platform_readb(void *opaque, target_phys_addr_t offset)
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{
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    offset &= 0xffffff;
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    if (offset >= PLATFORM_TREE_OFFSET) {
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        offset -= PLATFORM_TREE_OFFSET;
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        if (offset >= machine_devtree_size)
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            return 0;
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        return ldub_p((char *)machine_devtree + offset);
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    }
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    cpu_abort(cpu_single_env, "syborg_platform_readb: Bad offset %x\n",
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              (int)offset);
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}
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static void syborg_platform_write(void *opaque, target_phys_addr_t offset,
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                                  uint32_t value)
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{
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    offset &= 0xffffff;
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    cpu_abort(cpu_single_env, "syborg_platform_write: Bad offset %x\n",
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              (int)offset);
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}
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static CPUReadMemoryFunc *syborg_platform_readfn[] = {
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     syborg_platform_readb,
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     syborg_platform_readw,
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     syborg_platform_readl
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};
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static CPUWriteMemoryFunc *syborg_platform_writefn[] = {
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     syborg_platform_write,
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     syborg_platform_write,
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     syborg_platform_write
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};
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static void syborg_platform_create(QEMUDevice *dev)
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{
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    syborg_platform_state *s;
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    s = (syborg_platform_state *)qemu_mallocz(sizeof(syborg_platform_state));
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    s->qdev = dev;
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    qdev_set_opaque(dev, s);
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    /* Device has no state, so savevm not needed.  */
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}
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void syborg_platform_register(void)
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{
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    QEMUDeviceClass *dc;
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    dc = qdev_new("syborg,platform", syborg_platform_create, 0);
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    qdev_add_registers(dc, syborg_platform_readfn, syborg_platform_writefn,
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                       0x1000000);
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}