Core features of ARM XScale processors. Main PXA270 and PXA255 peripherals.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2749 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 1673 insertions, 0 deletions

diff --git a/hw/pxa2xx.c b/hw/pxa2xx.c
new file mode 100644
index 0000000000..f9d2925bf4
--- /dev/null
+++ b/hw/pxa2xx.c
@@ -0,0 +1,1673 @@
+/*
+ * Intel XScale PXA255/270 processor support.
+ *
+ * Copyright (c) 2006 Openedhand Ltd.
+ * Written by Andrzej Zaborowski <balrog@zabor.org>
+ *
+ * This code is licenced under the GPL.
+ */
+
+# include "vl.h"
+
+static struct {
+    target_phys_addr_t io_base;
+    int irqn;
+} pxa255_serial[] = {
+    { 0x40100000, PXA2XX_PIC_FFUART },
+    { 0x40200000, PXA2XX_PIC_BTUART },
+    { 0x40700000, PXA2XX_PIC_STUART },
+    { 0x41600000, PXA25X_PIC_HWUART },
+    { 0, 0 }
+}, pxa270_serial[] = {
+    { 0x40100000, PXA2XX_PIC_FFUART },
+    { 0x40200000, PXA2XX_PIC_BTUART },
+    { 0x40700000, PXA2XX_PIC_STUART },
+    { 0, 0 }
+};
+
+static struct {
+    target_phys_addr_t io_base;
+    int irqn;
+} pxa250_ssp[] = {
+    { 0x41000000, PXA2XX_PIC_SSP },
+    { 0, 0 }
+}, pxa255_ssp[] = {
+    { 0x41000000, PXA2XX_PIC_SSP },
+    { 0x41400000, PXA25X_PIC_NSSP },
+    { 0, 0 }
+}, pxa26x_ssp[] = {
+    { 0x41000000, PXA2XX_PIC_SSP },
+    { 0x41400000, PXA25X_PIC_NSSP },
+    { 0x41500000, PXA26X_PIC_ASSP },
+    { 0, 0 }
+}, pxa27x_ssp[] = {
+    { 0x41000000, PXA2XX_PIC_SSP },
+    { 0x41700000, PXA27X_PIC_SSP2 },
+    { 0x41900000, PXA2XX_PIC_SSP3 },
+    { 0, 0 }
+};
+
+#define PMCR	0x00	/* Power Manager Control register */
+#define PSSR	0x04	/* Power Manager Sleep Status register */
+#define PSPR	0x08	/* Power Manager Scratch-Pad register */
+#define PWER	0x0c	/* Power Manager Wake-Up Enable register */
+#define PRER	0x10	/* Power Manager Rising-Edge Detect Enable register */
+#define PFER	0x14	/* Power Manager Falling-Edge Detect Enable register */
+#define PEDR	0x18	/* Power Manager Edge-Detect Status register */
+#define PCFR	0x1c	/* Power Manager General Configuration register */
+#define PGSR0	0x20	/* Power Manager GPIO Sleep-State register 0 */
+#define PGSR1	0x24	/* Power Manager GPIO Sleep-State register 1 */
+#define PGSR2	0x28	/* Power Manager GPIO Sleep-State register 2 */
+#define PGSR3	0x2c	/* Power Manager GPIO Sleep-State register 3 */
+#define RCSR	0x30	/* Reset Controller Status register */
+#define PSLR	0x34	/* Power Manager Sleep Configuration register */
+#define PTSR	0x38	/* Power Manager Standby Configuration register */
+#define PVCR	0x40	/* Power Manager Voltage Change Control register */
+#define PUCR	0x4c	/* Power Manager USIM Card Control/Status register */
+#define PKWR	0x50	/* Power Manager Keyboard Wake-Up Enable register */
+#define PKSR	0x54	/* Power Manager Keyboard Level-Detect Status */
+#define PCMD0	0x80	/* Power Manager I2C Command register File 0 */
+#define PCMD31	0xfc	/* Power Manager I2C Command register File 31 */
+
+static uint32_t pxa2xx_pm_read(void *opaque, target_phys_addr_t addr)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    addr -= s->pm_base;
+
+    switch (addr) {
+    case PMCR ... PCMD31:
+        if (addr & 3)
+            goto fail;
+
+        return s->pm_regs[addr >> 2];
+    default:
+    fail:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_pm_write(void *opaque, target_phys_addr_t addr,
+                uint32_t value)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    addr -= s->pm_base;
+
+    switch (addr) {
+    case PMCR:
+        s->pm_regs[addr >> 2] &= 0x15 & ~(value & 0x2a);
+        s->pm_regs[addr >> 2] |= value & 0x15;
+        break;
+
+    case PSSR:	/* Read-clean registers */
+    case RCSR:
+    case PKSR:
+        s->pm_regs[addr >> 2] &= ~value;
+        break;
+
+    default:	/* Read-write registers */
+        if (addr >= PMCR && addr <= PCMD31 && !(addr & 3)) {
+            s->pm_regs[addr >> 2] = value;
+            break;
+        }
+
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+}
+
+static CPUReadMemoryFunc *pxa2xx_pm_readfn[] = {
+    pxa2xx_pm_read,
+    pxa2xx_pm_read,
+    pxa2xx_pm_read,
+};
+
+static CPUWriteMemoryFunc *pxa2xx_pm_writefn[] = {
+    pxa2xx_pm_write,
+    pxa2xx_pm_write,
+    pxa2xx_pm_write,
+};
+
+#define CCCR	0x00	/* Core Clock Configuration register */
+#define CKEN	0x04	/* Clock Enable register */
+#define OSCC	0x08	/* Oscillator Configuration register */
+#define CCSR	0x0c	/* Core Clock Status register */
+
+static uint32_t pxa2xx_cm_read(void *opaque, target_phys_addr_t addr)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    addr -= s->cm_base;
+
+    switch (addr) {
+    case CCCR:
+    case CKEN:
+    case OSCC:
+        return s->cm_regs[addr >> 2];
+
+    case CCSR:
+        return s->cm_regs[CCCR >> 2] | (3 << 28);
+
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_cm_write(void *opaque, target_phys_addr_t addr,
+                uint32_t value)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    addr -= s->cm_base;
+
+    switch (addr) {
+    case CCCR:
+    case CKEN:
+        s->cm_regs[addr >> 2] = value;
+        break;
+
+    case OSCC:
+        s->cm_regs[addr >> 2] &= ~0x6e;
+        s->cm_regs[addr >> 2] |= value & 0x6e;
+        break;
+
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+}
+
+static CPUReadMemoryFunc *pxa2xx_cm_readfn[] = {
+    pxa2xx_cm_read,
+    pxa2xx_cm_read,
+    pxa2xx_cm_read,
+};
+
+static CPUWriteMemoryFunc *pxa2xx_cm_writefn[] = {
+    pxa2xx_cm_write,
+    pxa2xx_cm_write,
+    pxa2xx_cm_write,
+};
+
+static uint32_t pxa2xx_clkpwr_read(void *opaque, int op2, int reg, int crm)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+
+    switch (reg) {
+    case 6:	/* Clock Configuration register */
+        return s->clkcfg;
+
+    case 7:	/* Power Mode register */
+        return 0;
+
+    default:
+        printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_clkpwr_write(void *opaque, int op2, int reg, int crm,
+                uint32_t value)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    static const char *pwrmode[8] = {
+        "Normal", "Idle", "Deep-idle", "Standby",
+        "Sleep", "reserved (!)", "reserved (!)", "Deep-sleep",
+    };
+
+    switch (reg) {
+    case 6:	/* Clock Configuration register */
+        s->clkcfg = value & 0xf;
+        if (value & 2)
+            printf("%s: CPU frequency change attempt\n", __FUNCTION__);
+        break;
+
+    case 7:	/* Power Mode register */
+        if (value & 8)
+            printf("%s: CPU voltage change attempt\n", __FUNCTION__);
+        switch (value & 7) {
+        case 0:
+            /* Do nothing */
+            break;
+
+        case 1:
+            /* Idle */
+            if (!(s->cm_regs[CCCR] & (1 << 31))) {	/* CPDIS */
+                cpu_interrupt(s->env, CPU_INTERRUPT_HALT);
+                break;
+            }
+            /* Fall through.  */
+
+        case 2:
+            /* Deep-Idle */
+            cpu_interrupt(s->env, CPU_INTERRUPT_HALT);
+            s->pm_regs[RCSR >> 2] |= 0x8;	/* Set GPR */
+            goto message;
+
+        case 3:
+            cpu_reset(s->env);
+            s->env->cp15.c1_sys = 0;
+            s->env->cp15.c1_coproc = 0;
+            s->env->cp15.c2 = 0;
+            s->env->cp15.c3 = 0;
+            s->pm_regs[PSSR >> 2] |= 0x8;	/* Set STS */
+            s->pm_regs[RCSR >> 2] |= 0x8;	/* Set GPR */
+
+            /*
+             * The scratch-pad register is almost universally used
+             * for storing the return address on suspend.  For the
+             * lack of a resuming bootloader, perform a jump
+             * directly to that address.
+             */
+            memset(s->env->regs, 0, 4 * 15);
+            s->env->regs[15] = s->pm_regs[PSPR >> 2];
+
+#if 0
+            buffer = 0xe59ff000;	/* ldr     pc, [pc, #0] */
+            cpu_physical_memory_write(0, &buffer, 4);
+            buffer = s->pm_regs[PSPR >> 2];
+            cpu_physical_memory_write(8, &buffer, 4);
+#endif
+
+            /* Suspend */
+            cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HALT);
+
+            goto message;
+
+        default:
+        message:
+            printf("%s: machine entered %s mode\n", __FUNCTION__,
+                            pwrmode[value & 7]);
+        }
+        break;
+
+    default:
+        printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
+        break;
+    }
+}
+
+/* Performace Monitoring Registers */
+#define CPPMNC		0	/* Performance Monitor Control register */
+#define CPCCNT		1	/* Clock Counter register */
+#define CPINTEN		4	/* Interrupt Enable register */
+#define CPFLAG		5	/* Overflow Flag register */
+#define CPEVTSEL	8	/* Event Selection register */
+
+#define CPPMN0		0	/* Performance Count register 0 */
+#define CPPMN1		1	/* Performance Count register 1 */
+#define CPPMN2		2	/* Performance Count register 2 */
+#define CPPMN3		3	/* Performance Count register 3 */
+
+static uint32_t pxa2xx_perf_read(void *opaque, int op2, int reg, int crm)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+
+    switch (reg) {
+    case CPPMNC:
+        return s->pmnc;
+    case CPCCNT:
+        if (s->pmnc & 1)
+            return qemu_get_clock(vm_clock);
+        else
+            return 0;
+    case CPINTEN:
+    case CPFLAG:
+    case CPEVTSEL:
+        return 0;
+
+    default:
+        printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_perf_write(void *opaque, int op2, int reg, int crm,
+                uint32_t value)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+
+    switch (reg) {
+    case CPPMNC:
+        s->pmnc = value;
+        break;
+
+    case CPCCNT:
+    case CPINTEN:
+    case CPFLAG:
+    case CPEVTSEL:
+        break;
+
+    default:
+        printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
+        break;
+    }
+}
+
+static uint32_t pxa2xx_cp14_read(void *opaque, int op2, int reg, int crm)
+{
+    switch (crm) {
+    case 0:
+        return pxa2xx_clkpwr_read(opaque, op2, reg, crm);
+    case 1:
+        return pxa2xx_perf_read(opaque, op2, reg, crm);
+    case 2:
+        switch (reg) {
+        case CPPMN0:
+        case CPPMN1:
+        case CPPMN2:
+        case CPPMN3:
+            return 0;
+        }
+        /* Fall through */
+    default:
+        printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_cp14_write(void *opaque, int op2, int reg, int crm,
+                uint32_t value)
+{
+    switch (crm) {
+    case 0:
+        pxa2xx_clkpwr_write(opaque, op2, reg, crm, value);
+        break;
+    case 1:
+        pxa2xx_perf_write(opaque, op2, reg, crm, value);
+        break;
+    case 2:
+        switch (reg) {
+        case CPPMN0:
+        case CPPMN1:
+        case CPPMN2:
+        case CPPMN3:
+            return;
+        }
+        /* Fall through */
+    default:
+        printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
+        break;
+    }
+}
+
+#define MDCNFG		0x00	/* SDRAM Configuration register */
+#define MDREFR		0x04	/* SDRAM Refresh Control register */
+#define MSC0		0x08	/* Static Memory Control register 0 */
+#define MSC1		0x0c	/* Static Memory Control register 1 */
+#define MSC2		0x10	/* Static Memory Control register 2 */
+#define MECR		0x14	/* Expansion Memory Bus Config register */
+#define SXCNFG		0x1c	/* Synchronous Static Memory Config register */
+#define MCMEM0		0x28	/* PC Card Memory Socket 0 Timing register */
+#define MCMEM1		0x2c	/* PC Card Memory Socket 1 Timing register */
+#define MCATT0		0x30	/* PC Card Attribute Socket 0 register */
+#define MCATT1		0x34	/* PC Card Attribute Socket 1 register */
+#define MCIO0		0x38	/* PC Card I/O Socket 0 Timing register */
+#define MCIO1		0x3c	/* PC Card I/O Socket 1 Timing register */
+#define MDMRS		0x40	/* SDRAM Mode Register Set Config register */
+#define BOOT_DEF	0x44	/* Boot-time Default Configuration register */
+#define ARB_CNTL	0x48	/* Arbiter Control register */
+#define BSCNTR0		0x4c	/* Memory Buffer Strength Control register 0 */
+#define BSCNTR1		0x50	/* Memory Buffer Strength Control register 1 */
+#define LCDBSCNTR	0x54	/* LCD Buffer Strength Control register */
+#define MDMRSLP		0x58	/* Low Power SDRAM Mode Set Config register */
+#define BSCNTR2		0x5c	/* Memory Buffer Strength Control register 2 */
+#define BSCNTR3		0x60	/* Memory Buffer Strength Control register 3 */
+#define SA1110		0x64	/* SA-1110 Memory Compatibility register */
+
+static uint32_t pxa2xx_mm_read(void *opaque, target_phys_addr_t addr)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    addr -= s->mm_base;
+
+    switch (addr) {
+    case MDCNFG ... SA1110:
+        if ((addr & 3) == 0)
+            return s->mm_regs[addr >> 2];
+
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_mm_write(void *opaque, target_phys_addr_t addr,
+                uint32_t value)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    addr -= s->mm_base;
+
+    switch (addr) {
+    case MDCNFG ... SA1110:
+        if ((addr & 3) == 0) {
+            s->mm_regs[addr >> 2] = value;
+            break;
+        }
+
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+}
+
+static CPUReadMemoryFunc *pxa2xx_mm_readfn[] = {
+    pxa2xx_mm_read,
+    pxa2xx_mm_read,
+    pxa2xx_mm_read,
+};
+
+static CPUWriteMemoryFunc *pxa2xx_mm_writefn[] = {
+    pxa2xx_mm_write,
+    pxa2xx_mm_write,
+    pxa2xx_mm_write,
+};
+
+/* Synchronous Serial Ports */
+struct pxa2xx_ssp_s {
+    target_phys_addr_t base;
+    qemu_irq irq;
+    int enable;
+
+    uint32_t sscr[2];
+    uint32_t sspsp;
+    uint32_t ssto;
+    uint32_t ssitr;
+    uint32_t sssr;
+    uint8_t sstsa;
+    uint8_t ssrsa;
+    uint8_t ssacd;
+
+    uint32_t rx_fifo[16];
+    int rx_level;
+    int rx_start;
+
+    uint32_t (*readfn)(void *opaque);
+    void (*writefn)(void *opaque, uint32_t value);
+    void *opaque;
+};
+
+#define SSCR0	0x00	/* SSP Control register 0 */
+#define SSCR1	0x04	/* SSP Control register 1 */
+#define SSSR	0x08	/* SSP Status register */
+#define SSITR	0x0c	/* SSP Interrupt Test register */
+#define SSDR	0x10	/* SSP Data register */
+#define SSTO	0x28	/* SSP Time-Out register */
+#define SSPSP	0x2c	/* SSP Programmable Serial Protocol register */
+#define SSTSA	0x30	/* SSP TX Time Slot Active register */
+#define SSRSA	0x34	/* SSP RX Time Slot Active register */
+#define SSTSS	0x38	/* SSP Time Slot Status register */
+#define SSACD	0x3c	/* SSP Audio Clock Divider register */
+
+/* Bitfields for above registers */
+#define SSCR0_SPI(x)	(((x) & 0x30) == 0x00)
+#define SSCR0_SSP(x)	(((x) & 0x30) == 0x10)
+#define SSCR0_UWIRE(x)	(((x) & 0x30) == 0x20)
+#define SSCR0_PSP(x)	(((x) & 0x30) == 0x30)
+#define SSCR0_SSE	(1 << 7)
+#define SSCR0_RIM	(1 << 22)
+#define SSCR0_TIM	(1 << 23)
+#define SSCR0_MOD	(1 << 31)
+#define SSCR0_DSS(x)	(((((x) >> 16) & 0x10) | ((x) & 0xf)) + 1)
+#define SSCR1_RIE	(1 << 0)
+#define SSCR1_TIE	(1 << 1)
+#define SSCR1_LBM	(1 << 2)
+#define SSCR1_MWDS	(1 << 5)
+#define SSCR1_TFT(x)	((((x) >> 6) & 0xf) + 1)
+#define SSCR1_RFT(x)	((((x) >> 10) & 0xf) + 1)
+#define SSCR1_EFWR	(1 << 14)
+#define SSCR1_PINTE	(1 << 18)
+#define SSCR1_TINTE	(1 << 19)
+#define SSCR1_RSRE	(1 << 20)
+#define SSCR1_TSRE	(1 << 21)
+#define SSCR1_EBCEI	(1 << 29)
+#define SSITR_INT	(7 << 5)
+#define SSSR_TNF	(1 << 2)
+#define SSSR_RNE	(1 << 3)
+#define SSSR_TFS	(1 << 5)
+#define SSSR_RFS	(1 << 6)
+#define SSSR_ROR	(1 << 7)
+#define SSSR_PINT	(1 << 18)
+#define SSSR_TINT	(1 << 19)
+#define SSSR_EOC	(1 << 20)
+#define SSSR_TUR	(1 << 21)
+#define SSSR_BCE	(1 << 23)
+#define SSSR_RW		0x00bc0080
+
+static void pxa2xx_ssp_int_update(struct pxa2xx_ssp_s *s)
+{
+    int level = 0;
+
+    level |= s->ssitr & SSITR_INT;
+    level |= (s->sssr & SSSR_BCE)  &&  (s->sscr[1] & SSCR1_EBCEI);
+    level |= (s->sssr & SSSR_TUR)  && !(s->sscr[0] & SSCR0_TIM);
+    level |= (s->sssr & SSSR_EOC)  &&  (s->sssr & (SSSR_TINT | SSSR_PINT));
+    level |= (s->sssr & SSSR_TINT) &&  (s->sscr[1] & SSCR1_TINTE);
+    level |= (s->sssr & SSSR_PINT) &&  (s->sscr[1] & SSCR1_PINTE);
+    level |= (s->sssr & SSSR_ROR)  && !(s->sscr[0] & SSCR0_RIM);
+    level |= (s->sssr & SSSR_RFS)  &&  (s->sscr[1] & SSCR1_RIE);
+    level |= (s->sssr & SSSR_TFS)  &&  (s->sscr[1] & SSCR1_TIE);
+    qemu_set_irq(s->irq, !!level);
+}
+
+static void pxa2xx_ssp_fifo_update(struct pxa2xx_ssp_s *s)
+{
+    s->sssr &= ~(0xf << 12);	/* Clear RFL */
+    s->sssr &= ~(0xf << 8);	/* Clear TFL */
+    s->sssr &= ~SSSR_TNF;
+    if (s->enable) {
+        s->sssr |= ((s->rx_level - 1) & 0xf) << 12;
+        if (s->rx_level >= SSCR1_RFT(s->sscr[1]))
+            s->sssr |= SSSR_RFS;
+        else
+            s->sssr &= ~SSSR_RFS;
+        if (0 <= SSCR1_TFT(s->sscr[1]))
+            s->sssr |= SSSR_TFS;
+        else
+            s->sssr &= ~SSSR_TFS;
+        if (s->rx_level)
+            s->sssr |= SSSR_RNE;
+        else
+            s->sssr &= ~SSSR_RNE;
+        s->sssr |= SSSR_TNF;
+    }
+
+    pxa2xx_ssp_int_update(s);
+}
+
+static uint32_t pxa2xx_ssp_read(void *opaque, target_phys_addr_t addr)
+{
+    struct pxa2xx_ssp_s *s = (struct pxa2xx_ssp_s *) opaque;
+    uint32_t retval;
+    addr -= s->base;
+
+    switch (addr) {
+    case SSCR0:
+        return s->sscr[0];
+    case SSCR1:
+        return s->sscr[1];
+    case SSPSP:
+        return s->sspsp;
+    case SSTO:
+        return s->ssto;
+    case SSITR:
+        return s->ssitr;
+    case SSSR:
+        return s->sssr | s->ssitr;
+    case SSDR:
+        if (!s->enable)
+            return 0xffffffff;
+        if (s->rx_level < 1) {
+            printf("%s: SSP Rx Underrun\n", __FUNCTION__);
+            return 0xffffffff;
+        }
+        s->rx_level --;
+        retval = s->rx_fifo[s->rx_start ++];
+        s->rx_start &= 0xf;
+        pxa2xx_ssp_fifo_update(s);
+        return retval;
+    case SSTSA:
+        return s->sstsa;
+    case SSRSA:
+        return s->ssrsa;
+    case SSTSS:
+        return 0;
+    case SSACD:
+        return s->ssacd;
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_ssp_write(void *opaque, target_phys_addr_t addr,
+                uint32_t value)
+{
+    struct pxa2xx_ssp_s *s = (struct pxa2xx_ssp_s *) opaque;
+    addr -= s->base;
+
+    switch (addr) {
+    case SSCR0:
+        s->sscr[0] = value & 0xc7ffffff;
+        s->enable = value & SSCR0_SSE;
+        if (value & SSCR0_MOD)
+            printf("%s: Attempt to use network mode\n", __FUNCTION__);
+        if (s->enable && SSCR0_DSS(value) < 4)
+            printf("%s: Wrong data size: %i bits\n", __FUNCTION__,
+                            SSCR0_DSS(value));
+        if (!(value & SSCR0_SSE)) {
+            s->sssr = 0;
+            s->ssitr = 0;
+            s->rx_level = 0;
+        }
+        pxa2xx_ssp_fifo_update(s);
+        break;
+
+    case SSCR1:
+        s->sscr[1] = value;
+        if (value & (SSCR1_LBM | SSCR1_EFWR))
+            printf("%s: Attempt to use SSP test mode\n", __FUNCTION__);
+        pxa2xx_ssp_fifo_update(s);
+        break;
+
+    case SSPSP:
+        s->sspsp = value;
+        break;
+
+    case SSTO:
+        s->ssto = value;
+        break;
+
+    case SSITR:
+        s->ssitr = value & SSITR_INT;
+        pxa2xx_ssp_int_update(s);
+        break;
+
+    case SSSR:
+        s->sssr &= ~(value & SSSR_RW);
+        pxa2xx_ssp_int_update(s);
+        break;
+
+    case SSDR:
+        if (SSCR0_UWIRE(s->sscr[0])) {
+            if (s->sscr[1] & SSCR1_MWDS)
+                value &= 0xffff;
+            else
+                value &= 0xff;
+        } else
+            /* Note how 32bits overflow does no harm here */
+            value &= (1 << SSCR0_DSS(s->sscr[0])) - 1;
+
+        /* Data goes from here to the Tx FIFO and is shifted out from
+         * there directly to the slave, no need to buffer it.
+         */
+        if (s->enable) {
+            if (s->writefn)
+                s->writefn(s->opaque, value);
+
+            if (s->rx_level < 0x10) {
+                if (s->readfn)
+                    s->rx_fifo[(s->rx_start + s->rx_level ++) & 0xf] =
+                            s->readfn(s->opaque);
+                else
+                    s->rx_fifo[(s->rx_start + s->rx_level ++) & 0xf] = 0x0;
+            } else
+                s->sssr |= SSSR_ROR;
+        }
+        pxa2xx_ssp_fifo_update(s);
+        break;
+
+    case SSTSA:
+        s->sstsa = value;
+        break;
+
+    case SSRSA:
+        s->ssrsa = value;
+        break;
+
+    case SSACD:
+        s->ssacd = value;
+        break;
+
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+}
+
+void pxa2xx_ssp_attach(struct pxa2xx_ssp_s *port,
+                uint32_t (*readfn)(void *opaque),
+                void (*writefn)(void *opaque, uint32_t value), void *opaque)
+{
+    if (!port) {
+        printf("%s: no such SSP\n", __FUNCTION__);
+        exit(-1);
+    }
+
+    port->opaque = opaque;
+    port->readfn = readfn;
+    port->writefn = writefn;
+}
+
+static CPUReadMemoryFunc *pxa2xx_ssp_readfn[] = {
+    pxa2xx_ssp_read,
+    pxa2xx_ssp_read,
+    pxa2xx_ssp_read,
+};
+
+static CPUWriteMemoryFunc *pxa2xx_ssp_writefn[] = {
+    pxa2xx_ssp_write,
+    pxa2xx_ssp_write,
+    pxa2xx_ssp_write,
+};
+
+/* Real-Time Clock */
+#define RCNR		0x00	/* RTC Counter register */
+#define RTAR		0x04	/* RTC Alarm register */
+#define RTSR		0x08	/* RTC Status register */
+#define RTTR		0x0c	/* RTC Timer Trim register */
+#define RDCR		0x10	/* RTC Day Counter register */
+#define RYCR		0x14	/* RTC Year Counter register */
+#define RDAR1		0x18	/* RTC Wristwatch Day Alarm register 1 */
+#define RYAR1		0x1c	/* RTC Wristwatch Year Alarm register 1 */
+#define RDAR2		0x20	/* RTC Wristwatch Day Alarm register 2 */
+#define RYAR2		0x24	/* RTC Wristwatch Year Alarm register 2 */
+#define SWCR		0x28	/* RTC Stopwatch Counter register */
+#define SWAR1		0x2c	/* RTC Stopwatch Alarm register 1 */
+#define SWAR2		0x30	/* RTC Stopwatch Alarm register 2 */
+#define RTCPICR		0x34	/* RTC Periodic Interrupt Counter register */
+#define PIAR		0x38	/* RTC Periodic Interrupt Alarm register */
+
+static inline void pxa2xx_rtc_int_update(struct pxa2xx_state_s *s)
+{
+    qemu_set_irq(s->pic[PXA2XX_PIC_RTCALARM], !!(s->rtsr & 0x2553));
+}
+
+static void pxa2xx_rtc_hzupdate(struct pxa2xx_state_s *s)
+{
+    int64_t rt = qemu_get_clock(rt_clock);
+    s->last_rcnr += ((rt - s->last_hz) << 15) /
+            (1000 * ((s->rttr & 0xffff) + 1));
+    s->last_rdcr += ((rt - s->last_hz) << 15) /
+            (1000 * ((s->rttr & 0xffff) + 1));
+    s->last_hz = rt;
+}
+
+static void pxa2xx_rtc_swupdate(struct pxa2xx_state_s *s)
+{
+    int64_t rt = qemu_get_clock(rt_clock);
+    if (s->rtsr & (1 << 12))
+        s->last_swcr += (rt - s->last_sw) / 10;
+    s->last_sw = rt;
+}
+
+static void pxa2xx_rtc_piupdate(struct pxa2xx_state_s *s)
+{
+    int64_t rt = qemu_get_clock(rt_clock);
+    if (s->rtsr & (1 << 15))
+        s->last_swcr += rt - s->last_pi;
+    s->last_pi = rt;
+}
+
+static inline void pxa2xx_rtc_alarm_update(struct pxa2xx_state_s *s,
+                uint32_t rtsr)
+{
+    if ((rtsr & (1 << 2)) && !(rtsr & (1 << 0)))
+        qemu_mod_timer(s->rtc_hz, s->last_hz +
+                (((s->rtar - s->last_rcnr) * 1000 *
+                  ((s->rttr & 0xffff) + 1)) >> 15));
+    else
+        qemu_del_timer(s->rtc_hz);
+
+    if ((rtsr & (1 << 5)) && !(rtsr & (1 << 4)))
+        qemu_mod_timer(s->rtc_rdal1, s->last_hz +
+                (((s->rdar1 - s->last_rdcr) * 1000 *
+                  ((s->rttr & 0xffff) + 1)) >> 15)); /* TODO: fixup */
+    else
+        qemu_del_timer(s->rtc_rdal1);
+
+    if ((rtsr & (1 << 7)) && !(rtsr & (1 << 6)))
+        qemu_mod_timer(s->rtc_rdal2, s->last_hz +
+                (((s->rdar2 - s->last_rdcr) * 1000 *
+                  ((s->rttr & 0xffff) + 1)) >> 15)); /* TODO: fixup */
+    else
+        qemu_del_timer(s->rtc_rdal2);
+
+    if ((rtsr & 0x1200) == 0x1200 && !(rtsr & (1 << 8)))
+        qemu_mod_timer(s->rtc_swal1, s->last_sw +
+                        (s->swar1 - s->last_swcr) * 10); /* TODO: fixup */
+    else
+        qemu_del_timer(s->rtc_swal1);
+
+    if ((rtsr & 0x1800) == 0x1800 && !(rtsr & (1 << 10)))
+        qemu_mod_timer(s->rtc_swal2, s->last_sw +
+                        (s->swar2 - s->last_swcr) * 10); /* TODO: fixup */
+    else
+        qemu_del_timer(s->rtc_swal2);
+
+    if ((rtsr & 0xc000) == 0xc000 && !(rtsr & (1 << 13)))
+        qemu_mod_timer(s->rtc_pi, s->last_pi +
+                        (s->piar & 0xffff) - s->last_rtcpicr);
+    else
+        qemu_del_timer(s->rtc_pi);
+}
+
+static inline void pxa2xx_rtc_hz_tick(void *opaque)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    s->rtsr |= (1 << 0);
+    pxa2xx_rtc_alarm_update(s, s->rtsr);
+    pxa2xx_rtc_int_update(s);
+}
+
+static inline void pxa2xx_rtc_rdal1_tick(void *opaque)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    s->rtsr |= (1 << 4);
+    pxa2xx_rtc_alarm_update(s, s->rtsr);
+    pxa2xx_rtc_int_update(s);
+}
+
+static inline void pxa2xx_rtc_rdal2_tick(void *opaque)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    s->rtsr |= (1 << 6);
+    pxa2xx_rtc_alarm_update(s, s->rtsr);
+    pxa2xx_rtc_int_update(s);
+}
+
+static inline void pxa2xx_rtc_swal1_tick(void *opaque)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    s->rtsr |= (1 << 8);
+    pxa2xx_rtc_alarm_update(s, s->rtsr);
+    pxa2xx_rtc_int_update(s);
+}
+
+static inline void pxa2xx_rtc_swal2_tick(void *opaque)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    s->rtsr |= (1 << 10);
+    pxa2xx_rtc_alarm_update(s, s->rtsr);
+    pxa2xx_rtc_int_update(s);
+}
+
+static inline void pxa2xx_rtc_pi_tick(void *opaque)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    s->rtsr |= (1 << 13);
+    pxa2xx_rtc_piupdate(s);
+    s->last_rtcpicr = 0;
+    pxa2xx_rtc_alarm_update(s, s->rtsr);
+    pxa2xx_rtc_int_update(s);
+}
+
+static uint32_t pxa2xx_rtc_read(void *opaque, target_phys_addr_t addr)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    addr -= s->rtc_base;
+
+    switch (addr) {
+    case RTTR:
+        return s->rttr;
+    case RTSR:
+        return s->rtsr;
+    case RTAR:
+        return s->rtar;
+    case RDAR1:
+        return s->rdar1;
+    case RDAR2:
+        return s->rdar2;
+    case RYAR1:
+        return s->ryar1;
+    case RYAR2:
+        return s->ryar2;
+    case SWAR1:
+        return s->swar1;
+    case SWAR2:
+        return s->swar2;
+    case PIAR:
+        return s->piar;
+    case RCNR:
+        return s->last_rcnr + ((qemu_get_clock(rt_clock) - s->last_hz) << 15) /
+                (1000 * ((s->rttr & 0xffff) + 1));
+    case RDCR:
+        return s->last_rdcr + ((qemu_get_clock(rt_clock) - s->last_hz) << 15) /
+                (1000 * ((s->rttr & 0xffff) + 1));
+    case RYCR:
+        return s->last_rycr;
+    case SWCR:
+        if (s->rtsr & (1 << 12))
+            return s->last_swcr + (qemu_get_clock(rt_clock) - s->last_sw) / 10;
+        else
+            return s->last_swcr;
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_rtc_write(void *opaque, target_phys_addr_t addr,
+                uint32_t value)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    addr -= s->rtc_base;
+
+    switch (addr) {
+    case RTTR:
+        if (!(s->rttr & (1 << 31))) {
+            pxa2xx_rtc_hzupdate(s);
+            s->rttr = value;
+            pxa2xx_rtc_alarm_update(s, s->rtsr);
+        }
+        break;
+
+    case RTSR:
+        if ((s->rtsr ^ value) & (1 << 15))
+            pxa2xx_rtc_piupdate(s);
+
+        if ((s->rtsr ^ value) & (1 << 12))
+            pxa2xx_rtc_swupdate(s);
+
+        if (((s->rtsr ^ value) & 0x4aac) | (value & ~0xdaac))
+            pxa2xx_rtc_alarm_update(s, value);
+
+        s->rtsr = (value & 0xdaac) | (s->rtsr & ~(value & ~0xdaac));
+        pxa2xx_rtc_int_update(s);
+        break;
+
+    case RTAR:
+        s->rtar = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case RDAR1:
+        s->rdar1 = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case RDAR2:
+        s->rdar2 = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case RYAR1:
+        s->ryar1 = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case RYAR2:
+        s->ryar2 = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case SWAR1:
+        pxa2xx_rtc_swupdate(s);
+        s->swar1 = value;
+        s->last_swcr = 0;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case SWAR2:
+        s->swar2 = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case PIAR:
+        s->piar = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case RCNR:
+        pxa2xx_rtc_hzupdate(s);
+        s->last_rcnr = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case RDCR:
+        pxa2xx_rtc_hzupdate(s);
+        s->last_rdcr = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case RYCR:
+        s->last_rycr = value;
+        break;
+
+    case SWCR:
+        pxa2xx_rtc_swupdate(s);
+        s->last_swcr = value;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    case RTCPICR:
+        pxa2xx_rtc_piupdate(s);
+        s->last_rtcpicr = value & 0xffff;
+        pxa2xx_rtc_alarm_update(s, s->rtsr);
+        break;
+
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+    }
+}
+
+static void pxa2xx_rtc_reset(struct pxa2xx_state_s *s)
+{
+    struct tm *tm;
+    time_t ti;
+    int wom;
+
+    s->rttr = 0x7fff;
+    s->rtsr = 0;
+
+    time(&ti);
+    if (rtc_utc)
+        tm = gmtime(&ti);
+    else
+        tm = localtime(&ti);
+    wom = ((tm->tm_mday - 1) / 7) + 1;
+
+    s->last_rcnr = (uint32_t) ti;
+    s->last_rdcr = (wom << 20) | ((tm->tm_wday + 1) << 17) |
+            (tm->tm_hour << 12) | (tm->tm_min << 6) | tm->tm_sec;
+    s->last_rycr = ((tm->tm_year + 1900) << 9) |
+            ((tm->tm_mon + 1) << 5) | tm->tm_mday;
+    s->last_swcr = (tm->tm_hour << 19) |
+            (tm->tm_min << 13) | (tm->tm_sec << 7);
+    s->last_rtcpicr = 0;
+    s->last_hz = s->last_sw = s->last_pi = qemu_get_clock(rt_clock);
+
+    s->rtc_hz    = qemu_new_timer(rt_clock, pxa2xx_rtc_hz_tick,    s);
+    s->rtc_rdal1 = qemu_new_timer(rt_clock, pxa2xx_rtc_rdal1_tick, s);
+    s->rtc_rdal2 = qemu_new_timer(rt_clock, pxa2xx_rtc_rdal2_tick, s);
+    s->rtc_swal1 = qemu_new_timer(rt_clock, pxa2xx_rtc_swal1_tick, s);
+    s->rtc_swal2 = qemu_new_timer(rt_clock, pxa2xx_rtc_swal2_tick, s);
+    s->rtc_pi    = qemu_new_timer(rt_clock, pxa2xx_rtc_pi_tick,    s);
+}
+
+static CPUReadMemoryFunc *pxa2xx_rtc_readfn[] = {
+    pxa2xx_rtc_read,
+    pxa2xx_rtc_read,
+    pxa2xx_rtc_read,
+};
+
+static CPUWriteMemoryFunc *pxa2xx_rtc_writefn[] = {
+    pxa2xx_rtc_write,
+    pxa2xx_rtc_write,
+    pxa2xx_rtc_write,
+};
+
+/* PXA Inter-IC Sound Controller */
+static void pxa2xx_i2s_reset(struct pxa2xx_i2s_s *i2s)
+{
+    i2s->rx_len = 0;
+    i2s->tx_len = 0;
+    i2s->fifo_len = 0;
+    i2s->clk = 0x1a;
+    i2s->control[0] = 0x00;
+    i2s->control[1] = 0x00;
+    i2s->status = 0x00;
+    i2s->mask = 0x00;
+}
+
+#define SACR_TFTH(val)	((val >> 8) & 0xf)
+#define SACR_RFTH(val)	((val >> 12) & 0xf)
+#define SACR_DREC(val)	(val & (1 << 3))
+#define SACR_DPRL(val)	(val & (1 << 4))
+
+static inline void pxa2xx_i2s_update(struct pxa2xx_i2s_s *i2s)
+{
+    int rfs, tfs;
+    rfs = SACR_RFTH(i2s->control[0]) < i2s->rx_len &&
+            !SACR_DREC(i2s->control[1]);
+    tfs = (i2s->tx_len || i2s->fifo_len < SACR_TFTH(i2s->control[0])) &&
+            i2s->enable && !SACR_DPRL(i2s->control[1]);
+
+    pxa2xx_dma_request(i2s->dma, PXA2XX_RX_RQ_I2S, rfs);
+    pxa2xx_dma_request(i2s->dma, PXA2XX_TX_RQ_I2S, tfs);
+
+    i2s->status &= 0xe0;
+    if (i2s->rx_len)
+        i2s->status |= 1 << 1;			/* RNE */
+    if (i2s->enable)
+        i2s->status |= 1 << 2;			/* BSY */
+    if (tfs)
+        i2s->status |= 1 << 3;			/* TFS */
+    if (rfs)
+        i2s->status |= 1 << 4;			/* RFS */
+    if (!(i2s->tx_len && i2s->enable))
+        i2s->status |= i2s->fifo_len << 8;	/* TFL */
+    i2s->status |= MAX(i2s->rx_len, 0xf) << 12;	/* RFL */
+
+    qemu_set_irq(i2s->irq, i2s->status & i2s->mask);
+}
+
+#define SACR0	0x00	/* Serial Audio Global Control register */
+#define SACR1	0x04	/* Serial Audio I2S/MSB-Justified Control register */
+#define SASR0	0x0c	/* Serial Audio Interface and FIFO Status register */
+#define SAIMR	0x14	/* Serial Audio Interrupt Mask register */
+#define SAICR	0x18	/* Serial Audio Interrupt Clear register */
+#define SADIV	0x60	/* Serial Audio Clock Divider register */
+#define SADR	0x80	/* Serial Audio Data register */
+
+static uint32_t pxa2xx_i2s_read(void *opaque, target_phys_addr_t addr)
+{
+    struct pxa2xx_i2s_s *s = (struct pxa2xx_i2s_s *) opaque;
+    addr -= s->base;
+
+    switch (addr) {
+    case SACR0:
+        return s->control[0];
+    case SACR1:
+        return s->control[1];
+    case SASR0:
+        return s->status;
+    case SAIMR:
+        return s->mask;
+    case SAICR:
+        return 0;
+    case SADIV:
+        return s->clk;
+    case SADR:
+        if (s->rx_len > 0) {
+            s->rx_len --;
+            pxa2xx_i2s_update(s);
+            return s->codec_in(s->opaque);
+        }
+        return 0;
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_i2s_write(void *opaque, target_phys_addr_t addr,
+                uint32_t value)
+{
+    struct pxa2xx_i2s_s *s = (struct pxa2xx_i2s_s *) opaque;
+    uint32_t *sample;
+    addr -= s->base;
+
+    switch (addr) {
+    case SACR0:
+        if (value & (1 << 3))				/* RST */
+            pxa2xx_i2s_reset(s);
+        s->control[0] = value & 0xff3d;
+        if (!s->enable && (value & 1) && s->tx_len) {	/* ENB */
+            for (sample = s->fifo; s->fifo_len > 0; s->fifo_len --, sample ++)
+                s->codec_out(s->opaque, *sample);
+            s->status &= ~(1 << 7);			/* I2SOFF */
+        }
+        if (value & (1 << 4))				/* EFWR */
+            printf("%s: Attempt to use special function\n", __FUNCTION__);
+        s->enable = ((value ^ 4) & 5) == 5;		/* ENB && !RST*/
+        pxa2xx_i2s_update(s);
+        break;
+    case SACR1:
+        s->control[1] = value & 0x0039;
+        if (value & (1 << 5))				/* ENLBF */
+            printf("%s: Attempt to use loopback function\n", __FUNCTION__);
+        if (value & (1 << 4))				/* DPRL */
+            s->fifo_len = 0;
+        pxa2xx_i2s_update(s);
+        break;
+    case SAIMR:
+        s->mask = value & 0x0078;
+        pxa2xx_i2s_update(s);
+        break;
+    case SAICR:
+        s->status &= ~(value & (3 << 5));
+        pxa2xx_i2s_update(s);
+        break;
+    case SADIV:
+        s->clk = value & 0x007f;
+        break;
+    case SADR:
+        if (s->tx_len && s->enable) {
+            s->tx_len --;
+            pxa2xx_i2s_update(s);
+            s->codec_out(s->opaque, value);
+        } else if (s->fifo_len < 16) {
+            s->fifo[s->fifo_len ++] = value;
+            pxa2xx_i2s_update(s);
+        }
+        break;
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+    }
+}
+
+static CPUReadMemoryFunc *pxa2xx_i2s_readfn[] = {
+    pxa2xx_i2s_read,
+    pxa2xx_i2s_read,
+    pxa2xx_i2s_read,
+};
+
+static CPUWriteMemoryFunc *pxa2xx_i2s_writefn[] = {
+    pxa2xx_i2s_write,
+    pxa2xx_i2s_write,
+    pxa2xx_i2s_write,
+};
+
+static void pxa2xx_i2s_data_req(void *opaque, int tx, int rx)
+{
+    struct pxa2xx_i2s_s *s = (struct pxa2xx_i2s_s *) opaque;
+    uint32_t *sample;
+
+    /* Signal FIFO errors */
+    if (s->enable && s->tx_len)
+        s->status |= 1 << 5;		/* TUR */
+    if (s->enable && s->rx_len)
+        s->status |= 1 << 6;		/* ROR */
+
+    /* Should be tx - MIN(tx, s->fifo_len) but we don't really need to
+     * handle the cases where it makes a difference.  */
+    s->tx_len = tx - s->fifo_len;
+    s->rx_len = rx;
+    /* Note that is s->codec_out wasn't set, we wouldn't get called.  */
+    if (s->enable)
+        for (sample = s->fifo; s->fifo_len; s->fifo_len --, sample ++)
+            s->codec_out(s->opaque, *sample);
+    pxa2xx_i2s_update(s);
+}
+
+static struct pxa2xx_i2s_s *pxa2xx_i2s_init(target_phys_addr_t base,
+                qemu_irq irq, struct pxa2xx_dma_state_s *dma)
+{
+    int iomemtype;
+    struct pxa2xx_i2s_s *s = (struct pxa2xx_i2s_s *)
+            qemu_mallocz(sizeof(struct pxa2xx_i2s_s));
+
+    s->base = base;
+    s->irq = irq;
+    s->dma = dma;
+    s->data_req = pxa2xx_i2s_data_req;
+
+    pxa2xx_i2s_reset(s);
+
+    iomemtype = cpu_register_io_memory(0, pxa2xx_i2s_readfn,
+                    pxa2xx_i2s_writefn, s);
+    cpu_register_physical_memory(s->base & 0xfff00000, 0xfffff, iomemtype);
+
+    return s;
+}
+
+/* PXA Fast Infra-red Communications Port */
+struct pxa2xx_fir_s {
+    target_phys_addr_t base;
+    qemu_irq irq;
+    struct pxa2xx_dma_state_s *dma;
+    int enable;
+    CharDriverState *chr;
+
+    uint8_t control[3];
+    uint8_t status[2];
+
+    int rx_len;
+    int rx_start;
+    uint8_t rx_fifo[64];
+};
+
+static void pxa2xx_fir_reset(struct pxa2xx_fir_s *s)
+{
+    s->control[0] = 0x00;
+    s->control[1] = 0x00;
+    s->control[2] = 0x00;
+    s->status[0] = 0x00;
+    s->status[1] = 0x00;
+    s->enable = 0;
+}
+
+static inline void pxa2xx_fir_update(struct pxa2xx_fir_s *s)
+{
+    static const int tresh[4] = { 8, 16, 32, 0 };
+    int intr = 0;
+    if ((s->control[0] & (1 << 4)) &&			/* RXE */
+                    s->rx_len >= tresh[s->control[2] & 3])	/* TRIG */
+        s->status[0] |= 1 << 4;				/* RFS */
+    else
+        s->status[0] &= ~(1 << 4);			/* RFS */
+    if (s->control[0] & (1 << 3))			/* TXE */
+        s->status[0] |= 1 << 3;				/* TFS */
+    else
+        s->status[0] &= ~(1 << 3);			/* TFS */
+    if (s->rx_len)
+        s->status[1] |= 1 << 2;				/* RNE */
+    else
+        s->status[1] &= ~(1 << 2);			/* RNE */
+    if (s->control[0] & (1 << 4))			/* RXE */
+        s->status[1] |= 1 << 0;				/* RSY */
+    else
+        s->status[1] &= ~(1 << 0);			/* RSY */
+
+    intr |= (s->control[0] & (1 << 5)) &&		/* RIE */
+            (s->status[0] & (1 << 4));			/* RFS */
+    intr |= (s->control[0] & (1 << 6)) &&		/* TIE */
+            (s->status[0] & (1 << 3));			/* TFS */
+    intr |= (s->control[2] & (1 << 4)) &&		/* TRAIL */
+            (s->status[0] & (1 << 6));			/* EOC */
+    intr |= (s->control[0] & (1 << 2)) &&		/* TUS */
+            (s->status[0] & (1 << 1));			/* TUR */
+    intr |= s->status[0] & 0x25;			/* FRE, RAB, EIF */
+
+    pxa2xx_dma_request(s->dma, PXA2XX_RX_RQ_ICP, (s->status[0] >> 4) & 1);
+    pxa2xx_dma_request(s->dma, PXA2XX_TX_RQ_ICP, (s->status[0] >> 3) & 1);
+
+    qemu_set_irq(s->irq, intr && s->enable);
+}
+
+#define ICCR0	0x00	/* FICP Control register 0 */
+#define ICCR1	0x04	/* FICP Control register 1 */
+#define ICCR2	0x08	/* FICP Control register 2 */
+#define ICDR	0x0c	/* FICP Data register */
+#define ICSR0	0x14	/* FICP Status register 0 */
+#define ICSR1	0x18	/* FICP Status register 1 */
+#define ICFOR	0x1c	/* FICP FIFO Occupancy Status register */
+
+static uint32_t pxa2xx_fir_read(void *opaque, target_phys_addr_t addr)
+{
+    struct pxa2xx_fir_s *s = (struct pxa2xx_fir_s *) opaque;
+    uint8_t ret;
+    addr -= s->base;
+
+    switch (addr) {
+    case ICCR0:
+        return s->control[0];
+    case ICCR1:
+        return s->control[1];
+    case ICCR2:
+        return s->control[2];
+    case ICDR:
+        s->status[0] &= ~0x01;
+        s->status[1] &= ~0x72;
+        if (s->rx_len) {
+            s->rx_len --;
+            ret = s->rx_fifo[s->rx_start ++];
+            s->rx_start &= 63;
+            pxa2xx_fir_update(s);
+            return ret;
+        }
+        printf("%s: Rx FIFO underrun.\n", __FUNCTION__);
+        break;
+    case ICSR0:
+        return s->status[0];
+    case ICSR1:
+        return s->status[1] | (1 << 3);			/* TNF */
+    case ICFOR:
+        return s->rx_len;
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+        break;
+    }
+    return 0;
+}
+
+static void pxa2xx_fir_write(void *opaque, target_phys_addr_t addr,
+                uint32_t value)
+{
+    struct pxa2xx_fir_s *s = (struct pxa2xx_fir_s *) opaque;
+    uint8_t ch;
+    addr -= s->base;
+
+    switch (addr) {
+    case ICCR0:
+        s->control[0] = value;
+        if (!(value & (1 << 4)))			/* RXE */
+            s->rx_len = s->rx_start = 0;
+        if (!(value & (1 << 3)))			/* TXE */
+            /* Nop */;
+        s->enable = value & 1;				/* ITR */
+        if (!s->enable)
+            s->status[0] = 0;
+        pxa2xx_fir_update(s);
+        break;
+    case ICCR1:
+        s->control[1] = value;
+        break;
+    case ICCR2:
+        s->control[2] = value & 0x3f;
+        pxa2xx_fir_update(s);
+        break;
+    case ICDR:
+        if (s->control[2] & (1 << 2))			/* TXP */
+            ch = value;
+        else
+            ch = ~value;
+        if (s->chr && s->enable && (s->control[0] & (1 << 3)))	/* TXE */
+            qemu_chr_write(s->chr, &ch, 1);
+        break;
+    case ICSR0:
+        s->status[0] &= ~(value & 0x66);
+        pxa2xx_fir_update(s);
+        break;
+    case ICFOR:
+        break;
+    default:
+        printf("%s: Bad register " REG_FMT "\n", __FUNCTION__, addr);
+    }
+}
+
+static CPUReadMemoryFunc *pxa2xx_fir_readfn[] = {
+    pxa2xx_fir_read,
+    pxa2xx_fir_read,
+    pxa2xx_fir_read,
+};
+
+static CPUWriteMemoryFunc *pxa2xx_fir_writefn[] = {
+    pxa2xx_fir_write,
+    pxa2xx_fir_write,
+    pxa2xx_fir_write,
+};
+
+static int pxa2xx_fir_is_empty(void *opaque)
+{
+    struct pxa2xx_fir_s *s = (struct pxa2xx_fir_s *) opaque;
+    return (s->rx_len < 64);
+}
+
+static void pxa2xx_fir_rx(void *opaque, const uint8_t *buf, int size)
+{
+    struct pxa2xx_fir_s *s = (struct pxa2xx_fir_s *) opaque;
+    if (!(s->control[0] & (1 << 4)))			/* RXE */
+        return;
+
+    while (size --) {
+        s->status[1] |= 1 << 4;				/* EOF */
+        if (s->rx_len >= 64) {
+            s->status[1] |= 1 << 6;			/* ROR */
+            break;
+        }
+
+        if (s->control[2] & (1 << 3))			/* RXP */
+            s->rx_fifo[(s->rx_start + s->rx_len ++) & 63] = *(buf ++);
+        else
+            s->rx_fifo[(s->rx_start + s->rx_len ++) & 63] = ~*(buf ++);
+    }
+
+    pxa2xx_fir_update(s);
+}
+
+static void pxa2xx_fir_event(void *opaque, int event)
+{
+}
+
+static struct pxa2xx_fir_s *pxa2xx_fir_init(target_phys_addr_t base,
+                qemu_irq irq, struct pxa2xx_dma_state_s *dma,
+                CharDriverState *chr)
+{
+    int iomemtype;
+    struct pxa2xx_fir_s *s = (struct pxa2xx_fir_s *)
+            qemu_mallocz(sizeof(struct pxa2xx_fir_s));
+
+    s->base = base;
+    s->irq = irq;
+    s->dma = dma;
+    s->chr = chr;
+
+    pxa2xx_fir_reset(s);
+
+    iomemtype = cpu_register_io_memory(0, pxa2xx_fir_readfn,
+                    pxa2xx_fir_writefn, s);
+    cpu_register_physical_memory(s->base, 0xfff, iomemtype);
+
+    if (chr)
+        qemu_chr_add_handlers(chr, pxa2xx_fir_is_empty,
+                        pxa2xx_fir_rx, pxa2xx_fir_event, s);
+
+    return s;
+}
+
+void pxa2xx_reset(int line, int level, void *opaque)
+{
+    struct pxa2xx_state_s *s = (struct pxa2xx_state_s *) opaque;
+    if (level && (s->pm_regs[PCFR >> 2] & 0x10)) {	/* GPR_EN */
+        cpu_reset(s->env);
+        /* TODO: reset peripherals */
+    }
+}
+
+/* Initialise a PXA270 integrated chip (ARM based core).  */
+struct pxa2xx_state_s *pxa270_init(DisplayState *ds, const char *revision)
+{
+    struct pxa2xx_state_s *s;
+    struct pxa2xx_ssp_s *ssp;
+    char *cpu_model;
+    int iomemtype, i;
+    s = (struct pxa2xx_state_s *) qemu_mallocz(sizeof(struct pxa2xx_state_s));
+
+    s->env = cpu_init();
+    asprintf(&cpu_model, "pxa270-%s", revision);
+    cpu_arm_set_model(s->env, cpu_model);
+    free(cpu_model);
+
+    s->pic = pxa2xx_pic_init(0x40d00000, s->env);
+
+    s->dma = pxa27x_dma_init(0x40000000, s->pic[PXA2XX_PIC_DMA]);
+
+    s->gpio = pxa2xx_gpio_init(0x40e00000, s->env, s->pic, 121);
+
+    for (i = 0; pxa270_serial[i].io_base; i ++)
+        if (serial_hds[i])
+            serial_mm_init(pxa270_serial[i].io_base, 2,
+                            s->pic[pxa270_serial[i].irqn], serial_hds[i], 1);
+        else
+            break;
+    if (serial_hds[i])
+        s->fir = pxa2xx_fir_init(0x40800000, s->pic[PXA2XX_PIC_ICP],
+                        s->dma, serial_hds[i]);
+
+    s->cm_base = 0x41300000;
+    s->cm_regs[CCCR >> 4] = 0x02000210;	/* 416.0 MHz */
+    s->clkcfg = 0x00000009;		/* Turbo mode active */
+    iomemtype = cpu_register_io_memory(0, pxa2xx_cm_readfn,
+                    pxa2xx_cm_writefn, s);
+    cpu_register_physical_memory(s->cm_base, 0xfff, iomemtype);
+
+    cpu_arm_set_cp_io(s->env, 14, pxa2xx_cp14_read, pxa2xx_cp14_write, s);
+
+    s->mm_base = 0x48000000;
+    s->mm_regs[MDMRS >> 2] = 0x00020002;
+    s->mm_regs[MDREFR >> 2] = 0x03ca4000;
+    s->mm_regs[MECR >> 2] = 0x00000001;	/* Two PC Card sockets */
+    iomemtype = cpu_register_io_memory(0, pxa2xx_mm_readfn,
+                    pxa2xx_mm_writefn, s);
+    cpu_register_physical_memory(s->mm_base, 0xfff, iomemtype);
+
+    for (i = 0; pxa27x_ssp[i].io_base; i ++);
+    s->ssp = (struct pxa2xx_ssp_s **)
+            qemu_mallocz(sizeof(struct pxa2xx_ssp_s *) * i);
+    ssp = (struct pxa2xx_ssp_s *)
+            qemu_mallocz(sizeof(struct pxa2xx_ssp_s) * i);
+    for (i = 0; pxa27x_ssp[i].io_base; i ++) {
+        s->ssp[i] = &ssp[i];
+        ssp[i].base = pxa27x_ssp[i].io_base;
+        ssp[i].irq = s->pic[pxa27x_ssp[i].irqn];
+
+        iomemtype = cpu_register_io_memory(0, pxa2xx_ssp_readfn,
+                        pxa2xx_ssp_writefn, &ssp[i]);
+        cpu_register_physical_memory(ssp[i].base, 0xfff, iomemtype);
+    }
+
+    s->rtc_base = 0x40900000;
+    iomemtype = cpu_register_io_memory(0, pxa2xx_rtc_readfn,
+                    pxa2xx_rtc_writefn, s);
+    cpu_register_physical_memory(s->rtc_base, 0xfff, iomemtype);
+    pxa2xx_rtc_reset(s);
+
+    s->pm_base = 0x40f00000;
+    iomemtype = cpu_register_io_memory(0, pxa2xx_pm_readfn,
+                    pxa2xx_pm_writefn, s);
+    cpu_register_physical_memory(s->pm_base, 0xfff, iomemtype);
+
+    s->i2s = pxa2xx_i2s_init(0x40400000, s->pic[PXA2XX_PIC_I2S], s->dma);
+
+    /* GPIO1 resets the processor */
+    /* The handler can be overriden by board-specific code */
+    pxa2xx_gpio_handler_set(s->gpio, 1, pxa2xx_reset, s);
+    return s;
+}
+
+/* Initialise a PXA255 integrated chip (ARM based core).  */
+struct pxa2xx_state_s *pxa255_init(DisplayState *ds)
+{
+    struct pxa2xx_state_s *s;
+    struct pxa2xx_ssp_s *ssp;
+    int iomemtype, i;
+    s = (struct pxa2xx_state_s *) qemu_mallocz(sizeof(struct pxa2xx_state_s));
+
+    s->env = cpu_init();
+    cpu_arm_set_model(s->env, "pxa255");
+
+    s->pic = pxa2xx_pic_init(0x40d00000, s->env);
+
+    s->dma = pxa255_dma_init(0x40000000, s->pic[PXA2XX_PIC_DMA]);
+
+    s->gpio = pxa2xx_gpio_init(0x40e00000, s->env, s->pic, 121);
+
+    for (i = 0; pxa255_serial[i].io_base; i ++)
+        if (serial_hds[i])
+            serial_mm_init(pxa255_serial[i].io_base, 2,
+                            s->pic[pxa255_serial[i].irqn], serial_hds[i], 1);
+        else
+            break;
+    if (serial_hds[i])
+        s->fir = pxa2xx_fir_init(0x40800000, s->pic[PXA2XX_PIC_ICP],
+                        s->dma, serial_hds[i]);
+
+    s->cm_base = 0x41300000;
+    s->cm_regs[CCCR >> 4] = 0x02000210;	/* 416.0 MHz */
+    s->clkcfg = 0x00000009;		/* Turbo mode active */
+    iomemtype = cpu_register_io_memory(0, pxa2xx_cm_readfn,
+                    pxa2xx_cm_writefn, s);
+    cpu_register_physical_memory(s->cm_base, 0xfff, iomemtype);
+
+    cpu_arm_set_cp_io(s->env, 14, pxa2xx_cp14_read, pxa2xx_cp14_write, s);
+
+    s->mm_base = 0x48000000;
+    s->mm_regs[MDMRS >> 2] = 0x00020002;
+    s->mm_regs[MDREFR >> 2] = 0x03ca4000;
+    s->mm_regs[MECR >> 2] = 0x00000001;	/* Two PC Card sockets */
+    iomemtype = cpu_register_io_memory(0, pxa2xx_mm_readfn,
+                    pxa2xx_mm_writefn, s);
+    cpu_register_physical_memory(s->mm_base, 0xfff, iomemtype);
+
+    for (i = 0; pxa255_ssp[i].io_base; i ++);
+    s->ssp = (struct pxa2xx_ssp_s **)
+            qemu_mallocz(sizeof(struct pxa2xx_ssp_s *) * i);
+    ssp = (struct pxa2xx_ssp_s *)
+            qemu_mallocz(sizeof(struct pxa2xx_ssp_s) * i);
+    for (i = 0; pxa255_ssp[i].io_base; i ++) {
+        s->ssp[i] = &ssp[i];
+        ssp[i].base = pxa255_ssp[i].io_base;
+        ssp[i].irq = s->pic[pxa255_ssp[i].irqn];
+
+        iomemtype = cpu_register_io_memory(0, pxa2xx_ssp_readfn,
+                        pxa2xx_ssp_writefn, &ssp[i]);
+        cpu_register_physical_memory(ssp[i].base, 0xfff, iomemtype);
+    }
+
+    s->rtc_base = 0x40900000;
+    iomemtype = cpu_register_io_memory(0, pxa2xx_rtc_readfn,
+                    pxa2xx_rtc_writefn, s);
+    cpu_register_physical_memory(s->rtc_base, 0xfff, iomemtype);
+    pxa2xx_rtc_reset(s);
+
+    s->pm_base = 0x40f00000;
+    iomemtype = cpu_register_io_memory(0, pxa2xx_pm_readfn,
+                    pxa2xx_pm_writefn, s);
+    cpu_register_physical_memory(s->pm_base, 0xfff, iomemtype);
+
+    s->i2s = pxa2xx_i2s_init(0x40400000, s->pic[PXA2XX_PIC_I2S], s->dma);
+
+    /* GPIO1 resets the processor */
+    /* The handler can be overriden by board-specific code */
+    pxa2xx_gpio_handler_set(s->gpio, 1, pxa2xx_reset, s);
+    return s;
+}