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qemu/hw/integratorcp.c
Markus Armbruster e23a1b33b5 New qdev_init_nofail() 
Like qdev_init(), but terminate program via hw_error() instead of
returning an error value.

Use it instead of qdev_init() where terminating the program on failure
is okay, either because it's during machine construction, or because
we know that failure can't happen.

Because relying in the latter is somewhat unclean, and the former is
not always obvious, it would be nice to go back to qdev_init() in the
not-so-obvious cases, only with proper error handling.  I'm leaving
that for another day, because it involves making sure that error
values are properly checked by all callers.

Patchworks-ID: 35168
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-07 08:54:54 -05:00

543 lines
15 KiB
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/*
* ARM Integrator CP System emulation.
*
* Copyright (c) 2005-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licenced under the GPL
*/
#include "sysbus.h"
#include "primecell.h"
#include "devices.h"
#include "sysemu.h"
#include "boards.h"
#include "arm-misc.h"
#include "net.h"
typedef struct {
SysBusDevice busdev;
uint32_t memsz;
uint32_t flash_offset;
uint32_t cm_osc;
uint32_t cm_ctrl;
uint32_t cm_lock;
uint32_t cm_auxosc;
uint32_t cm_sdram;
uint32_t cm_init;
uint32_t cm_flags;
uint32_t cm_nvflags;
uint32_t int_level;
uint32_t irq_enabled;
uint32_t fiq_enabled;
} integratorcm_state;
static uint8_t integrator_spd[128] = {
128, 8, 4, 11, 9, 1, 64, 0, 2, 0xa0, 0xa0, 0, 0, 8, 0, 1,
0xe, 4, 0x1c, 1, 2, 0x20, 0xc0, 0, 0, 0, 0, 0x30, 0x28, 0x30, 0x28, 0x40
};
static uint32_t integratorcm_read(void *opaque, target_phys_addr_t offset)
{
integratorcm_state *s = (integratorcm_state *)opaque;
if (offset >= 0x100 && offset < 0x200) {
/* CM_SPD */
if (offset >= 0x180)
return 0;
return integrator_spd[offset >> 2];
}
switch (offset >> 2) {
case 0: /* CM_ID */
return 0x411a3001;
case 1: /* CM_PROC */
return 0;
case 2: /* CM_OSC */
return s->cm_osc;
case 3: /* CM_CTRL */
return s->cm_ctrl;
case 4: /* CM_STAT */
return 0x00100000;
case 5: /* CM_LOCK */
if (s->cm_lock == 0xa05f) {
return 0x1a05f;
} else {
return s->cm_lock;
}
case 6: /* CM_LMBUSCNT */
/* ??? High frequency timer. */
hw_error("integratorcm_read: CM_LMBUSCNT");
case 7: /* CM_AUXOSC */
return s->cm_auxosc;
case 8: /* CM_SDRAM */
return s->cm_sdram;
case 9: /* CM_INIT */
return s->cm_init;
case 10: /* CM_REFCT */
/* ??? High frequency timer. */
hw_error("integratorcm_read: CM_REFCT");
case 12: /* CM_FLAGS */
return s->cm_flags;
case 14: /* CM_NVFLAGS */
return s->cm_nvflags;
case 16: /* CM_IRQ_STAT */
return s->int_level & s->irq_enabled;
case 17: /* CM_IRQ_RSTAT */
return s->int_level;
case 18: /* CM_IRQ_ENSET */
return s->irq_enabled;
case 20: /* CM_SOFT_INTSET */
return s->int_level & 1;
case 24: /* CM_FIQ_STAT */
return s->int_level & s->fiq_enabled;
case 25: /* CM_FIQ_RSTAT */
return s->int_level;
case 26: /* CM_FIQ_ENSET */
return s->fiq_enabled;
case 32: /* CM_VOLTAGE_CTL0 */
case 33: /* CM_VOLTAGE_CTL1 */
case 34: /* CM_VOLTAGE_CTL2 */
case 35: /* CM_VOLTAGE_CTL3 */
/* ??? Voltage control unimplemented. */
return 0;
default:
hw_error("integratorcm_read: Unimplemented offset 0x%x\n",
(int)offset);
return 0;
}
}
static void integratorcm_do_remap(integratorcm_state *s, int flash)
{
if (flash) {
cpu_register_physical_memory(0, 0x100000, IO_MEM_RAM);
} else {
cpu_register_physical_memory(0, 0x100000, s->flash_offset | IO_MEM_RAM);
}
//??? tlb_flush (cpu_single_env, 1);
}
static void integratorcm_set_ctrl(integratorcm_state *s, uint32_t value)
{
if (value & 8) {
hw_error("Board reset\n");
}
if ((s->cm_init ^ value) & 4) {
integratorcm_do_remap(s, (value & 4) == 0);
}
if ((s->cm_init ^ value) & 1) {
printf("Green LED %s\n", (value & 1) ? "on" : "off");
}
s->cm_init = (s->cm_init & ~ 5) | (value ^ 5);
}
static void integratorcm_update(integratorcm_state *s)
{
/* ??? The CPU irq/fiq is raised when either the core module or base PIC
are active. */
if (s->int_level & (s->irq_enabled | s->fiq_enabled))
hw_error("Core module interrupt\n");
}
static void integratorcm_write(void *opaque, target_phys_addr_t offset,
uint32_t value)
{
integratorcm_state *s = (integratorcm_state *)opaque;
switch (offset >> 2) {
case 2: /* CM_OSC */
if (s->cm_lock == 0xa05f)
s->cm_osc = value;
break;
case 3: /* CM_CTRL */
integratorcm_set_ctrl(s, value);
break;
case 5: /* CM_LOCK */
s->cm_lock = value & 0xffff;
break;
case 7: /* CM_AUXOSC */
if (s->cm_lock == 0xa05f)
s->cm_auxosc = value;
break;
case 8: /* CM_SDRAM */
s->cm_sdram = value;
break;
case 9: /* CM_INIT */
/* ??? This can change the memory bus frequency. */
s->cm_init = value;
break;
case 12: /* CM_FLAGSS */
s->cm_flags |= value;
break;
case 13: /* CM_FLAGSC */
s->cm_flags &= ~value;
break;
case 14: /* CM_NVFLAGSS */
s->cm_nvflags |= value;
break;
case 15: /* CM_NVFLAGSS */
s->cm_nvflags &= ~value;
break;
case 18: /* CM_IRQ_ENSET */
s->irq_enabled |= value;
integratorcm_update(s);
break;
case 19: /* CM_IRQ_ENCLR */
s->irq_enabled &= ~value;
integratorcm_update(s);
break;
case 20: /* CM_SOFT_INTSET */
s->int_level |= (value & 1);
integratorcm_update(s);
break;
case 21: /* CM_SOFT_INTCLR */
s->int_level &= ~(value & 1);
integratorcm_update(s);
break;
case 26: /* CM_FIQ_ENSET */
s->fiq_enabled |= value;
integratorcm_update(s);
break;
case 27: /* CM_FIQ_ENCLR */
s->fiq_enabled &= ~value;
integratorcm_update(s);
break;
case 32: /* CM_VOLTAGE_CTL0 */
case 33: /* CM_VOLTAGE_CTL1 */
case 34: /* CM_VOLTAGE_CTL2 */
case 35: /* CM_VOLTAGE_CTL3 */
/* ??? Voltage control unimplemented. */
break;
default:
hw_error("integratorcm_write: Unimplemented offset 0x%x\n",
(int)offset);
break;
}
}
/* Integrator/CM control registers. */
static CPUReadMemoryFunc * const integratorcm_readfn[] = {
integratorcm_read,
integratorcm_read,
integratorcm_read
};
static CPUWriteMemoryFunc * const integratorcm_writefn[] = {
integratorcm_write,
integratorcm_write,
integratorcm_write
};
static int integratorcm_init(SysBusDevice *dev)
{
int iomemtype;
integratorcm_state *s = FROM_SYSBUS(integratorcm_state, dev);
s->cm_osc = 0x01000048;
/* ??? What should the high bits of this value be? */
s->cm_auxosc = 0x0007feff;
s->cm_sdram = 0x00011122;
if (s->memsz >= 256) {
integrator_spd[31] = 64;
s->cm_sdram |= 0x10;
} else if (s->memsz >= 128) {
integrator_spd[31] = 32;
s->cm_sdram |= 0x0c;
} else if (s->memsz >= 64) {
integrator_spd[31] = 16;
s->cm_sdram |= 0x08;
} else if (s->memsz >= 32) {
integrator_spd[31] = 4;
s->cm_sdram |= 0x04;
} else {
integrator_spd[31] = 2;
}
memcpy(integrator_spd + 73, "QEMU-MEMORY", 11);
s->cm_init = 0x00000112;
s->flash_offset = qemu_ram_alloc(0x100000);
iomemtype = cpu_register_io_memory(integratorcm_readfn,
integratorcm_writefn, s);
sysbus_init_mmio(dev, 0x00800000, iomemtype);
integratorcm_do_remap(s, 1);
/* ??? Save/restore. */
return 0;
}
/* Integrator/CP hardware emulation. */
/* Primary interrupt controller. */
typedef struct icp_pic_state
{
SysBusDevice busdev;
uint32_t level;
uint32_t irq_enabled;
uint32_t fiq_enabled;
qemu_irq parent_irq;
qemu_irq parent_fiq;
} icp_pic_state;
static void icp_pic_update(icp_pic_state *s)
{
uint32_t flags;
flags = (s->level & s->irq_enabled);
qemu_set_irq(s->parent_irq, flags != 0);
flags = (s->level & s->fiq_enabled);
qemu_set_irq(s->parent_fiq, flags != 0);
}
static void icp_pic_set_irq(void *opaque, int irq, int level)
{
icp_pic_state *s = (icp_pic_state *)opaque;
if (level)
s->level |= 1 << irq;
else
s->level &= ~(1 << irq);
icp_pic_update(s);
}
static uint32_t icp_pic_read(void *opaque, target_phys_addr_t offset)
{
icp_pic_state *s = (icp_pic_state *)opaque;
switch (offset >> 2) {
case 0: /* IRQ_STATUS */
return s->level & s->irq_enabled;
case 1: /* IRQ_RAWSTAT */
return s->level;
case 2: /* IRQ_ENABLESET */
return s->irq_enabled;
case 4: /* INT_SOFTSET */
return s->level & 1;
case 8: /* FRQ_STATUS */
return s->level & s->fiq_enabled;
case 9: /* FRQ_RAWSTAT */
return s->level;
case 10: /* FRQ_ENABLESET */
return s->fiq_enabled;
case 3: /* IRQ_ENABLECLR */
case 5: /* INT_SOFTCLR */
case 11: /* FRQ_ENABLECLR */
default:
printf ("icp_pic_read: Bad register offset 0x%x\n", (int)offset);
return 0;
}
}
static void icp_pic_write(void *opaque, target_phys_addr_t offset,
uint32_t value)
{
icp_pic_state *s = (icp_pic_state *)opaque;
switch (offset >> 2) {
case 2: /* IRQ_ENABLESET */
s->irq_enabled |= value;
break;
case 3: /* IRQ_ENABLECLR */
s->irq_enabled &= ~value;
break;
case 4: /* INT_SOFTSET */
if (value & 1)
icp_pic_set_irq(s, 0, 1);
break;
case 5: /* INT_SOFTCLR */
if (value & 1)
icp_pic_set_irq(s, 0, 0);
break;
case 10: /* FRQ_ENABLESET */
s->fiq_enabled |= value;
break;
case 11: /* FRQ_ENABLECLR */
s->fiq_enabled &= ~value;
break;
case 0: /* IRQ_STATUS */
case 1: /* IRQ_RAWSTAT */
case 8: /* FRQ_STATUS */
case 9: /* FRQ_RAWSTAT */
default:
printf ("icp_pic_write: Bad register offset 0x%x\n", (int)offset);
return;
}
icp_pic_update(s);
}
static CPUReadMemoryFunc * const icp_pic_readfn[] = {
icp_pic_read,
icp_pic_read,
icp_pic_read
};
static CPUWriteMemoryFunc * const icp_pic_writefn[] = {
icp_pic_write,
icp_pic_write,
icp_pic_write
};
static int icp_pic_init(SysBusDevice *dev)
{
icp_pic_state *s = FROM_SYSBUS(icp_pic_state, dev);
int iomemtype;
qdev_init_gpio_in(&dev->qdev, icp_pic_set_irq, 32);
sysbus_init_irq(dev, &s->parent_irq);
sysbus_init_irq(dev, &s->parent_fiq);
iomemtype = cpu_register_io_memory(icp_pic_readfn,
icp_pic_writefn, s);
sysbus_init_mmio(dev, 0x00800000, iomemtype);
return 0;
}
/* CP control registers. */
static uint32_t icp_control_read(void *opaque, target_phys_addr_t offset)
{
switch (offset >> 2) {
case 0: /* CP_IDFIELD */
return 0x41034003;
case 1: /* CP_FLASHPROG */
return 0;
case 2: /* CP_INTREG */
return 0;
case 3: /* CP_DECODE */
return 0x11;
default:
hw_error("icp_control_read: Bad offset %x\n", (int)offset);
return 0;
}
}
static void icp_control_write(void *opaque, target_phys_addr_t offset,
uint32_t value)
{
switch (offset >> 2) {
case 1: /* CP_FLASHPROG */
case 2: /* CP_INTREG */
case 3: /* CP_DECODE */
/* Nothing interesting implemented yet. */
break;
default:
hw_error("icp_control_write: Bad offset %x\n", (int)offset);
}
}
static CPUReadMemoryFunc * const icp_control_readfn[] = {
icp_control_read,
icp_control_read,
icp_control_read
};
static CPUWriteMemoryFunc * const icp_control_writefn[] = {
icp_control_write,
icp_control_write,
icp_control_write
};
static void icp_control_init(uint32_t base)
{
int iomemtype;
iomemtype = cpu_register_io_memory(icp_control_readfn,
icp_control_writefn, NULL);
cpu_register_physical_memory(base, 0x00800000, iomemtype);
/* ??? Save/restore. */
}
/* Board init. */
static struct arm_boot_info integrator_binfo = {
.loader_start = 0x0,
.board_id = 0x113,
};
static void integratorcp_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
CPUState *env;
ram_addr_t ram_offset;
qemu_irq pic[32];
qemu_irq *cpu_pic;
DeviceState *dev;
int i;
if (!cpu_model)
cpu_model = "arm926";
env = cpu_init(cpu_model);
if (!env) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
ram_offset = qemu_ram_alloc(ram_size);
/* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash. */
/* ??? RAM should repeat to fill physical memory space. */
/* SDRAM at address zero*/
cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM);
/* And again at address 0x80000000 */
cpu_register_physical_memory(0x80000000, ram_size, ram_offset | IO_MEM_RAM);
dev = qdev_create(NULL, "integrator_core");
qdev_prop_set_uint32(dev, "memsz", ram_size >> 20);
qdev_init_nofail(dev);
sysbus_mmio_map((SysBusDevice *)dev, 0, 0x10000000);
cpu_pic = arm_pic_init_cpu(env);
dev = sysbus_create_varargs("integrator_pic", 0x14000000,
cpu_pic[ARM_PIC_CPU_IRQ],
cpu_pic[ARM_PIC_CPU_FIQ], NULL);
for (i = 0; i < 32; i++) {
pic[i] = qdev_get_gpio_in(dev, i);
}
sysbus_create_simple("integrator_pic", 0xca000000, pic[26]);
sysbus_create_varargs("integrator_pit", 0x13000000,
pic[5], pic[6], pic[7], NULL);
sysbus_create_simple("pl031", 0x15000000, pic[8]);
sysbus_create_simple("pl011", 0x16000000, pic[1]);
sysbus_create_simple("pl011", 0x17000000, pic[2]);
icp_control_init(0xcb000000);
sysbus_create_simple("pl050_keyboard", 0x18000000, pic[3]);
sysbus_create_simple("pl050_mouse", 0x19000000, pic[4]);
sysbus_create_varargs("pl181", 0x1c000000, pic[23], pic[24], NULL);
if (nd_table[0].vlan)
smc91c111_init(&nd_table[0], 0xc8000000, pic[27]);
sysbus_create_simple("pl110", 0xc0000000, pic[22]);
integrator_binfo.ram_size = ram_size;
integrator_binfo.kernel_filename = kernel_filename;
integrator_binfo.kernel_cmdline = kernel_cmdline;
integrator_binfo.initrd_filename = initrd_filename;
arm_load_kernel(env, &integrator_binfo);
}
static QEMUMachine integratorcp_machine = {
.name = "integratorcp",
.desc = "ARM Integrator/CP (ARM926EJ-S)",
.init = integratorcp_init,
.is_default = 1,
};
static void integratorcp_machine_init(void)
{
qemu_register_machine(&integratorcp_machine);
}
machine_init(integratorcp_machine_init);
static SysBusDeviceInfo core_info = {
.init = integratorcm_init,
.qdev.name = "integrator_core",
.qdev.size = sizeof(integratorcm_state),
.qdev.props = (Property[]) {
DEFINE_PROP_UINT32("memsz", integratorcm_state, memsz, 0),
DEFINE_PROP_END_OF_LIST(),
}
};
static void integratorcp_register_devices(void)
{
sysbus_register_dev("integrator_pic", sizeof(icp_pic_state), icp_pic_init);
sysbus_register_withprop(&core_info);
}
device_init(integratorcp_register_devices)
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