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-rw-r--r--hw/integratorcp.c673
1 files changed, 22 insertions, 651 deletions
diff --git a/hw/integratorcp.c b/hw/integratorcp.c
index 1bcd734b80..bce9b592c6 100644
--- a/hw/integratorcp.c
+++ b/hw/integratorcp.c
@@ -1,32 +1,19 @@
/*
* ARM Integrator CP System emulation.
*
- * Copyright (c) 2005 CodeSourcery, LLC.
+ * Copyright (c) 2005-2006 CodeSourcery.
* Written by Paul Brook
*
* This code is licenced under the GPL
*/
-#include <vl.h>
+#include "vl.h"
+#include "arm_pic.h"
#define KERNEL_ARGS_ADDR 0x100
#define KERNEL_LOAD_ADDR 0x00010000
#define INITRD_LOAD_ADDR 0x00800000
-/* Stub functions for hardware that doesn't exist. */
-void pic_set_irq(int irq, int level)
-{
- cpu_abort (cpu_single_env, "pic_set_irq");
-}
-
-void pic_info(void)
-{
-}
-
-void irq_info(void)
-{
-}
-
void DMA_run (void)
{
}
@@ -284,41 +271,31 @@ static void integratorcm_init(int memsz, uint32_t flash_offset)
typedef struct icp_pic_state
{
+ arm_pic_handler handler;
uint32_t base;
uint32_t level;
uint32_t irq_enabled;
uint32_t fiq_enabled;
void *parent;
- /* -1 if parent is a cpu, otherwise IRQ number on parent PIC. */
int parent_irq;
+ int parent_fiq;
} icp_pic_state;
static void icp_pic_update(icp_pic_state *s)
{
- CPUState *env;
- if (s->parent_irq != -1) {
- uint32_t flags;
+ uint32_t flags;
+ if (s->parent_irq != -1) {
flags = (s->level & s->irq_enabled);
- pic_set_irq_new(s->parent, s->parent_irq,
- flags != 0);
- return;
+ pic_set_irq_new(s->parent, s->parent_irq, flags != 0);
}
- /* Raise CPU interrupt. */
- env = (CPUState *)s->parent;
- if (s->level & s->fiq_enabled) {
- cpu_interrupt (env, CPU_INTERRUPT_FIQ);
- } else {
- cpu_reset_interrupt (env, CPU_INTERRUPT_FIQ);
- }
- if (s->level & s->irq_enabled) {
- cpu_interrupt (env, CPU_INTERRUPT_HARD);
- } else {
- cpu_reset_interrupt (env, CPU_INTERRUPT_HARD);
+ if (s->parent_fiq != -1) {
+ flags = (s->level & s->fiq_enabled);
+ pic_set_irq_new(s->parent, s->parent_fiq, flags != 0);
}
}
-void pic_set_irq_new(void *opaque, int irq, int level)
+static void icp_pic_set_irq(void *opaque, int irq, int level)
{
icp_pic_state *s = (icp_pic_state *)opaque;
if (level)
@@ -408,7 +385,7 @@ static CPUWriteMemoryFunc *icp_pic_writefn[] = {
};
static icp_pic_state *icp_pic_init(uint32_t base, void *parent,
- int parent_irq)
+ int parent_irq, int parent_fiq)
{
icp_pic_state *s;
int iomemtype;
@@ -416,10 +393,11 @@ static icp_pic_state *icp_pic_init(uint32_t base, void *parent,
s = (icp_pic_state *)qemu_mallocz(sizeof(icp_pic_state));
if (!s)
return NULL;
-
+ s->handler = icp_pic_set_irq;
s->base = base;
s->parent = parent;
s->parent_irq = parent_irq;
+ s->parent_fiq = parent_fiq;
iomemtype = cpu_register_io_memory(0, icp_pic_readfn,
icp_pic_writefn, s);
cpu_register_physical_memory(base, 0x007fffff, iomemtype);
@@ -427,499 +405,6 @@ static icp_pic_state *icp_pic_init(uint32_t base, void *parent,
return s;
}
-/* Timers. */
-
-/* System bus clock speed (40MHz) for timer 0. Not sure about this value. */
-#define ICP_BUS_FREQ 40000000
-
-typedef struct {
- int64_t next_time;
- int64_t expires[3];
- int64_t loaded[3];
- QEMUTimer *timer;
- icp_pic_state *pic;
- uint32_t base;
- uint32_t control[3];
- uint32_t count[3];
- uint32_t limit[3];
- int freq[3];
- int int_level[3];
-} icp_pit_state;
-
-/* Calculate the new expiry time of the given timer. */
-
-static void icp_pit_reload(icp_pit_state *s, int n)
-{
- int64_t delay;
-
- s->loaded[n] = s->expires[n];
- delay = muldiv64(s->count[n], ticks_per_sec, s->freq[n]);
- if (delay == 0)
- delay = 1;
- s->expires[n] += delay;
-}
-
-/* Check all active timers, and schedule the next timer interrupt. */
-
-static void icp_pit_update(icp_pit_state *s, int64_t now)
-{
- int n;
- int64_t next;
-
- next = now;
- for (n = 0; n < 3; n++) {
- /* Ignore disabled timers. */
- if ((s->control[n] & 0x80) == 0)
- continue;
- /* Ignore expired one-shot timers. */
- if (s->count[n] == 0 && s->control[n] & 1)
- continue;
- if (s->expires[n] - now <= 0) {
- /* Timer has expired. */
- s->int_level[n] = 1;
- if (s->control[n] & 1) {
- /* One-shot. */
- s->count[n] = 0;
- } else {
- if ((s->control[n] & 0x40) == 0) {
- /* Free running. */
- if (s->control[n] & 2)
- s->count[n] = 0xffffffff;
- else
- s->count[n] = 0xffff;
- } else {
- /* Periodic. */
- s->count[n] = s->limit[n];
- }
- }
- }
- while (s->expires[n] - now <= 0) {
- icp_pit_reload(s, n);
- }
- }
- /* Update interrupts. */
- for (n = 0; n < 3; n++) {
- if (s->int_level[n] && (s->control[n] & 0x20)) {
- pic_set_irq_new(s->pic, 5 + n, 1);
- } else {
- pic_set_irq_new(s->pic, 5 + n, 0);
- }
- if (next - s->expires[n] < 0)
- next = s->expires[n];
- }
- /* Schedule the next timer interrupt. */
- if (next == now) {
- qemu_del_timer(s->timer);
- s->next_time = 0;
- } else if (next != s->next_time) {
- qemu_mod_timer(s->timer, next);
- s->next_time = next;
- }
-}
-
-/* Return the current value of the timer. */
-static uint32_t icp_pit_getcount(icp_pit_state *s, int n, int64_t now)
-{
- int64_t elapsed;
- int64_t period;
-
- if (s->count[n] == 0)
- return 0;
- if ((s->control[n] & 0x80) == 0)
- return s->count[n];
- elapsed = now - s->loaded[n];
- period = s->expires[n] - s->loaded[n];
- /* If the timer should have expired then return 0. This can happen
- when the host timer signal doesnt occur immediately. It's better to
- have a timer appear to sit at zero for a while than have it wrap
- around before the guest interrupt is raised. */
- /* ??? Could we trigger the interrupt here? */
- if (elapsed > period)
- return 0;
- /* We need to calculate count * elapsed / period without overfowing.
- Scale both elapsed and period so they fit in a 32-bit int. */
- while (period != (int32_t)period) {
- period >>= 1;
- elapsed >>= 1;
- }
- return ((uint64_t)s->count[n] * (uint64_t)(int32_t)elapsed)
- / (int32_t)period;
-}
-
-static uint32_t icp_pit_read(void *opaque, target_phys_addr_t offset)
-{
- int n;
- icp_pit_state *s = (icp_pit_state *)opaque;
-
- offset -= s->base;
- n = offset >> 8;
- if (n > 2)
- cpu_abort (cpu_single_env, "icp_pit_read: Bad timer %x\n", offset);
- switch ((offset & 0xff) >> 2) {
- case 0: /* TimerLoad */
- case 6: /* TimerBGLoad */
- return s->limit[n];
- case 1: /* TimerValue */
- return icp_pit_getcount(s, n, qemu_get_clock(vm_clock));
- case 2: /* TimerControl */
- return s->control[n];
- case 4: /* TimerRIS */
- return s->int_level[n];
- case 5: /* TimerMIS */
- if ((s->control[n] & 0x20) == 0)
- return 0;
- return s->int_level[n];
- default:
- cpu_abort (cpu_single_env, "icp_pit_read: Bad offset %x\n", offset);
- return 0;
- }
-}
-
-static void icp_pit_write(void *opaque, target_phys_addr_t offset,
- uint32_t value)
-{
- icp_pit_state *s = (icp_pit_state *)opaque;
- int n;
- int64_t now;
-
- now = qemu_get_clock(vm_clock);
- offset -= s->base;
- n = offset >> 8;
- if (n > 2)
- cpu_abort (cpu_single_env, "icp_pit_write: Bad offset %x\n", offset);
-
- switch ((offset & 0xff) >> 2) {
- case 0: /* TimerLoad */
- s->limit[n] = value;
- s->count[n] = value;
- s->expires[n] = now;
- icp_pit_reload(s, n);
- break;
- case 1: /* TimerValue */
- /* ??? Linux seems to want to write to this readonly register.
- Ignore it. */
- break;
- case 2: /* TimerControl */
- if (s->control[n] & 0x80) {
- /* Pause the timer if it is running. This may cause some
- inaccuracy dure to rounding, but avoids a whole lot of other
- messyness. */
- s->count[n] = icp_pit_getcount(s, n, now);
- }
- s->control[n] = value;
- if (n == 0)
- s->freq[n] = ICP_BUS_FREQ;
- else
- s->freq[n] = 1000000;
- /* ??? Need to recalculate expiry time after changing divisor. */
- switch ((value >> 2) & 3) {
- case 1: s->freq[n] >>= 4; break;
- case 2: s->freq[n] >>= 8; break;
- }
- if (s->control[n] & 0x80) {
- /* Restart the timer if still enabled. */
- s->expires[n] = now;
- icp_pit_reload(s, n);
- }
- break;
- case 3: /* TimerIntClr */
- s->int_level[n] = 0;
- break;
- case 6: /* TimerBGLoad */
- s->limit[n] = value;
- break;
- default:
- cpu_abort (cpu_single_env, "icp_pit_write: Bad offset %x\n", offset);
- }
- icp_pit_update(s, now);
-}
-
-static void icp_pit_tick(void *opaque)
-{
- int64_t now;
-
- now = qemu_get_clock(vm_clock);
- icp_pit_update((icp_pit_state *)opaque, now);
-}
-
-static CPUReadMemoryFunc *icp_pit_readfn[] = {
- icp_pit_read,
- icp_pit_read,
- icp_pit_read
-};
-
-static CPUWriteMemoryFunc *icp_pit_writefn[] = {
- icp_pit_write,
- icp_pit_write,
- icp_pit_write
-};
-
-static void icp_pit_init(uint32_t base, icp_pic_state *pic)
-{
- int iomemtype;
- icp_pit_state *s;
- int n;
-
- s = (icp_pit_state *)qemu_mallocz(sizeof(icp_pit_state));
- s->base = base;
- s->pic = pic;
- s->freq[0] = ICP_BUS_FREQ;
- s->freq[1] = 1000000;
- s->freq[2] = 1000000;
- for (n = 0; n < 3; n++) {
- s->control[n] = 0x20;
- s->count[n] = 0xffffffff;
- }
-
- iomemtype = cpu_register_io_memory(0, icp_pit_readfn,
- icp_pit_writefn, s);
- cpu_register_physical_memory(base, 0x007fffff, iomemtype);
- s->timer = qemu_new_timer(vm_clock, icp_pit_tick, s);
- /* ??? Save/restore. */
-}
-
-/* ARM PrimeCell PL011 UART */
-
-typedef struct {
- uint32_t base;
- uint32_t readbuff;
- uint32_t flags;
- uint32_t lcr;
- uint32_t cr;
- uint32_t dmacr;
- uint32_t int_enabled;
- uint32_t int_level;
- uint32_t read_fifo[16];
- uint32_t ilpr;
- uint32_t ibrd;
- uint32_t fbrd;
- uint32_t ifl;
- int read_pos;
- int read_count;
- int read_trigger;
- CharDriverState *chr;
- icp_pic_state *pic;
- int irq;
-} pl011_state;
-
-#define PL011_INT_TX 0x20
-#define PL011_INT_RX 0x10
-
-#define PL011_FLAG_TXFE 0x80
-#define PL011_FLAG_RXFF 0x40
-#define PL011_FLAG_TXFF 0x20
-#define PL011_FLAG_RXFE 0x10
-
-static const unsigned char pl011_id[] =
-{ 0x11, 0x10, 0x14, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
-
-static void pl011_update(pl011_state *s)
-{
- uint32_t flags;
-
- flags = s->int_level & s->int_enabled;
- pic_set_irq_new(s->pic, s->irq, flags != 0);
-}
-
-static uint32_t pl011_read(void *opaque, target_phys_addr_t offset)
-{
- pl011_state *s = (pl011_state *)opaque;
- uint32_t c;
-
- offset -= s->base;
- if (offset >= 0xfe0 && offset < 0x1000) {
- return pl011_id[(offset - 0xfe0) >> 2];
- }
- switch (offset >> 2) {
- case 0: /* UARTDR */
- s->flags &= ~PL011_FLAG_RXFF;
- c = s->read_fifo[s->read_pos];
- if (s->read_count > 0) {
- s->read_count--;
- if (++s->read_pos == 16)
- s->read_pos = 0;
- }
- if (s->read_count == 0) {
- s->flags |= PL011_FLAG_RXFE;
- }
- if (s->read_count == s->read_trigger - 1)
- s->int_level &= ~ PL011_INT_RX;
- pl011_update(s);
- return c;
- case 1: /* UARTCR */
- return 0;
- case 6: /* UARTFR */
- return s->flags;
- case 8: /* UARTILPR */
- return s->ilpr;
- case 9: /* UARTIBRD */
- return s->ibrd;
- case 10: /* UARTFBRD */
- return s->fbrd;
- case 11: /* UARTLCR_H */
- return s->lcr;
- case 12: /* UARTCR */
- return s->cr;
- case 13: /* UARTIFLS */
- return s->ifl;
- case 14: /* UARTIMSC */
- return s->int_enabled;
- case 15: /* UARTRIS */
- return s->int_level;
- case 16: /* UARTMIS */
- return s->int_level & s->int_enabled;
- case 18: /* UARTDMACR */
- return s->dmacr;
- default:
- cpu_abort (cpu_single_env, "pl011_read: Bad offset %x\n", offset);
- return 0;
- }
-}
-
-static void pl011_set_read_trigger(pl011_state *s)
-{
-#if 0
- /* The docs say the RX interrupt is triggered when the FIFO exceeds
- the threshold. However linux only reads the FIFO in response to an
- interrupt. Triggering the interrupt when the FIFO is non-empty seems
- to make things work. */
- if (s->lcr & 0x10)
- s->read_trigger = (s->ifl >> 1) & 0x1c;
- else
-#endif
- s->read_trigger = 1;
-}
-
-static void pl011_write(void *opaque, target_phys_addr_t offset,
- uint32_t value)
-{
- pl011_state *s = (pl011_state *)opaque;
- unsigned char ch;
-
- offset -= s->base;
- switch (offset >> 2) {
- case 0: /* UARTDR */
- /* ??? Check if transmitter is enabled. */
- ch = value;
- if (s->chr)
- qemu_chr_write(s->chr, &ch, 1);
- s->int_level |= PL011_INT_TX;
- pl011_update(s);
- break;
- case 1: /* UARTCR */
- s->cr = value;
- break;
- case 8: /* UARTUARTILPR */
- s->ilpr = value;
- break;
- case 9: /* UARTIBRD */
- s->ibrd = value;
- break;
- case 10: /* UARTFBRD */
- s->fbrd = value;
- break;
- case 11: /* UARTLCR_H */
- s->lcr = value;
- pl011_set_read_trigger(s);
- break;
- case 12: /* UARTCR */
- /* ??? Need to implement the enable and loopback bits. */
- s->cr = value;
- break;
- case 13: /* UARTIFS */
- s->ifl = value;
- pl011_set_read_trigger(s);
- break;
- case 14: /* UARTIMSC */
- s->int_enabled = value;
- pl011_update(s);
- break;
- case 17: /* UARTICR */
- s->int_level &= ~value;
- pl011_update(s);
- break;
- case 18: /* UARTDMACR */
- s->dmacr = value;
- if (value & 3)
- cpu_abort(cpu_single_env, "PL011: DMA not implemented\n");
- break;
- default:
- cpu_abort (cpu_single_env, "pl011_write: Bad offset %x\n", offset);
- }
-}
-
-static int pl011_can_recieve(void *opaque)
-{
- pl011_state *s = (pl011_state *)opaque;
-
- if (s->lcr & 0x10)
- return s->read_count < 16;
- else
- return s->read_count < 1;
-}
-
-static void pl011_recieve(void *opaque, const uint8_t *buf, int size)
-{
- pl011_state *s = (pl011_state *)opaque;
- int slot;
-
- slot = s->read_pos + s->read_count;
- if (slot >= 16)
- slot -= 16;
- s->read_fifo[slot] = *buf;
- s->read_count++;
- s->flags &= ~PL011_FLAG_RXFE;
- if (s->cr & 0x10 || s->read_count == 16) {
- s->flags |= PL011_FLAG_RXFF;
- }
- if (s->read_count == s->read_trigger) {
- s->int_level |= PL011_INT_RX;
- pl011_update(s);
- }
-}
-
-static void pl011_event(void *opaque, int event)
-{
- /* ??? Should probably implement break. */
-}
-
-static CPUReadMemoryFunc *pl011_readfn[] = {
- pl011_read,
- pl011_read,
- pl011_read
-};
-
-static CPUWriteMemoryFunc *pl011_writefn[] = {
- pl011_write,
- pl011_write,
- pl011_write
-};
-
-static void pl011_init(uint32_t base, icp_pic_state *pic, int irq,
- CharDriverState *chr)
-{
- int iomemtype;
- pl011_state *s;
-
- s = (pl011_state *)qemu_mallocz(sizeof(pl011_state));
- iomemtype = cpu_register_io_memory(0, pl011_readfn,
- pl011_writefn, s);
- cpu_register_physical_memory(base, 0x007fffff, iomemtype);
- s->base = base;
- s->pic = pic;
- s->irq = irq;
- s->chr = chr;
- s->read_trigger = 1;
- s->ifl = 0x12;
- s->cr = 0x300;
- s->flags = 0x90;
- if (chr){
- qemu_chr_add_read_handler(chr, pl011_can_recieve, pl011_recieve, s);
- qemu_chr_add_event_handler(chr, pl011_event);
- }
- /* ??? Save/restore. */
-}
-
/* CP control registers. */
typedef struct {
uint32_t base;
@@ -985,122 +470,6 @@ static void icp_control_init(uint32_t base)
}
-/* Keyboard/Mouse Interface. */
-
-typedef struct {
- void *dev;
- uint32_t base;
- uint32_t cr;
- uint32_t clk;
- uint32_t last;
- icp_pic_state *pic;
- int pending;
- int irq;
- int is_mouse;
-} icp_kmi_state;
-
-static void icp_kmi_update(void *opaque, int level)
-{
- icp_kmi_state *s = (icp_kmi_state *)opaque;
- int raise;
-
- s->pending = level;
- raise = (s->pending && (s->cr & 0x10) != 0)
- || (s->cr & 0x08) != 0;
- pic_set_irq_new(s->pic, s->irq, raise);
-}
-
-static uint32_t icp_kmi_read(void *opaque, target_phys_addr_t offset)
-{
- icp_kmi_state *s = (icp_kmi_state *)opaque;
- offset -= s->base;
- if (offset >= 0xfe0 && offset < 0x1000)
- return 0;
-
- switch (offset >> 2) {
- case 0: /* KMICR */
- return s->cr;
- case 1: /* KMISTAT */
- /* KMIC and KMID bits not implemented. */
- if (s->pending) {
- return 0x10;
- } else {
- return 0;
- }
- case 2: /* KMIDATA */
- if (s->pending)
- s->last = ps2_read_data(s->dev);
- return s->last;
- case 3: /* KMICLKDIV */
- return s->clk;
- case 4: /* KMIIR */
- return s->pending | 2;
- default:
- cpu_abort (cpu_single_env, "icp_kmi_read: Bad offset %x\n", offset);
- return 0;
- }
-}
-
-static void icp_kmi_write(void *opaque, target_phys_addr_t offset,
- uint32_t value)
-{
- icp_kmi_state *s = (icp_kmi_state *)opaque;
- offset -= s->base;
- switch (offset >> 2) {
- case 0: /* KMICR */
- s->cr = value;
- icp_kmi_update(s, s->pending);
- /* ??? Need to implement the enable/disable bit. */
- break;
- case 2: /* KMIDATA */
- /* ??? This should toggle the TX interrupt line. */
- /* ??? This means kbd/mouse can block each other. */
- if (s->is_mouse) {
- ps2_write_mouse(s->dev, value);
- } else {
- ps2_write_keyboard(s->dev, value);
- }
- break;
- case 3: /* KMICLKDIV */
- s->clk = value;
- return;
- default:
- cpu_abort (cpu_single_env, "icp_kmi_write: Bad offset %x\n", offset);
- }
-}
-static CPUReadMemoryFunc *icp_kmi_readfn[] = {
- icp_kmi_read,
- icp_kmi_read,
- icp_kmi_read
-};
-
-static CPUWriteMemoryFunc *icp_kmi_writefn[] = {
- icp_kmi_write,
- icp_kmi_write,
- icp_kmi_write
-};
-
-static void icp_kmi_init(uint32_t base, icp_pic_state * pic, int irq,
- int is_mouse)
-{
- int iomemtype;
- icp_kmi_state *s;
-
- s = (icp_kmi_state *)qemu_mallocz(sizeof(icp_kmi_state));
- iomemtype = cpu_register_io_memory(0, icp_kmi_readfn,
- icp_kmi_writefn, s);
- cpu_register_physical_memory(base, 0x007fffff, iomemtype);
- s->base = base;
- s->pic = pic;
- s->irq = irq;
- s->is_mouse = is_mouse;
- if (is_mouse)
- s->dev = ps2_mouse_init(icp_kmi_update, s);
- else
- s->dev = ps2_kbd_init(icp_kmi_update, s);
- /* ??? Save/restore. */
-}
-
/* The worlds second smallest bootloader. Set r0-r2, then jump to kernel. */
static uint32_t bootloader[] = {
0xe3a00000, /* mov r0, #0 */
@@ -1162,6 +531,7 @@ static void integratorcp_init(int ram_size, int vga_ram_size, int boot_device,
CPUState *env;
uint32_t bios_offset;
icp_pic_state *pic;
+ void *cpu_pic;
int kernel_size;
int initrd_size;
int n;
@@ -1177,14 +547,15 @@ static void integratorcp_init(int ram_size, int vga_ram_size, int boot_device,
cpu_register_physical_memory(0x80000000, ram_size, IO_MEM_RAM);
integratorcm_init(ram_size >> 20, bios_offset);
- pic = icp_pic_init(0x14000000, env, -1);
- icp_pic_init(0xca000000, pic, 26);
- icp_pit_init(0x13000000, pic);
+ cpu_pic = arm_pic_init_cpu(env);
+ pic = icp_pic_init(0x14000000, cpu_pic, ARM_PIC_CPU_IRQ, ARM_PIC_CPU_FIQ);
+ icp_pic_init(0xca000000, pic, 26, -1);
+ icp_pit_init(0x13000000, pic, 5);
pl011_init(0x16000000, pic, 1, serial_hds[0]);
pl011_init(0x17000000, pic, 2, serial_hds[1]);
icp_control_init(0xcb000000);
- icp_kmi_init(0x18000000, pic, 3, 0);
- icp_kmi_init(0x19000000, pic, 4, 1);
+ pl050_init(0x18000000, pic, 3, 0);
+ pl050_init(0x19000000, pic, 4, 1);
if (nd_table[0].vlan) {
if (nd_table[0].model == NULL
|| strcmp(nd_table[0].model, "smc91c111") == 0) {
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-18 22:53:25 +0000