* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
- * This code is licenced under the GPL.
+ * This code is licensed under the GPL.
*/
#include "hw.h"
typedef struct {
SysBusDevice busdev;
+ MemoryRegion iomem;
+ qemu_irq pl110_mux_ctrl;
+
uint32_t sys_id;
uint32_t leds;
uint16_t lockval;
uint32_t nvflags;
uint32_t resetlevel;
uint32_t proc_id;
+ uint32_t sys_mci;
+ uint32_t sys_cfgdata;
+ uint32_t sys_cfgctrl;
+ uint32_t sys_cfgstat;
+ uint32_t sys_clcd;
} arm_sysctl_state;
static const VMStateDescription vmstate_arm_sysctl = {
.name = "realview_sysctl",
- .version_id = 1,
+ .version_id = 3,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(leds, arm_sysctl_state),
VMSTATE_UINT32(flags, arm_sysctl_state),
VMSTATE_UINT32(nvflags, arm_sysctl_state),
VMSTATE_UINT32(resetlevel, arm_sysctl_state),
+ VMSTATE_UINT32_V(sys_mci, arm_sysctl_state, 2),
+ VMSTATE_UINT32_V(sys_cfgdata, arm_sysctl_state, 2),
+ VMSTATE_UINT32_V(sys_cfgctrl, arm_sysctl_state, 2),
+ VMSTATE_UINT32_V(sys_cfgstat, arm_sysctl_state, 2),
+ VMSTATE_UINT32_V(sys_clcd, arm_sysctl_state, 3),
VMSTATE_END_OF_LIST()
}
};
+/* The PB926 actually uses a different format for
+ * its SYS_ID register. Fortunately the bits which are
+ * board type on later boards are distinct.
+ */
+#define BOARD_ID_PB926 0x100
+#define BOARD_ID_EB 0x140
+#define BOARD_ID_PBA8 0x178
+#define BOARD_ID_PBX 0x182
+#define BOARD_ID_VEXPRESS 0x190
+
+static int board_id(arm_sysctl_state *s)
+{
+ /* Extract the board ID field from the SYS_ID register value */
+ return (s->sys_id >> 16) & 0xfff;
+}
+
static void arm_sysctl_reset(DeviceState *d)
{
arm_sysctl_state *s = FROM_SYSBUS(arm_sysctl_state, sysbus_from_qdev(d));
s->cfgdata2 = 0;
s->flags = 0;
s->resetlevel = 0;
+ if (board_id(s) == BOARD_ID_VEXPRESS) {
+ /* On VExpress this register will RAZ/WI */
+ s->sys_clcd = 0;
+ } else {
+ /* All others: CLCDID 0x1f, indicating VGA */
+ s->sys_clcd = 0x1f00;
+ }
}
-static uint32_t arm_sysctl_read(void *opaque, target_phys_addr_t offset)
+static uint64_t arm_sysctl_read(void *opaque, target_phys_addr_t offset,
+ unsigned size)
{
arm_sysctl_state *s = (arm_sysctl_state *)opaque;
case 0x38: /* NVFLAGS */
return s->nvflags;
case 0x40: /* RESETCTL */
+ if (board_id(s) == BOARD_ID_VEXPRESS) {
+ /* reserved: RAZ/WI */
+ return 0;
+ }
return s->resetlevel;
case 0x44: /* PCICTL */
return 1;
case 0x48: /* MCI */
- return 0;
+ return s->sys_mci;
case 0x4c: /* FLASH */
return 0;
case 0x50: /* CLCD */
- return 0x1000;
+ return s->sys_clcd;
case 0x54: /* CLCDSER */
return 0;
case 0x58: /* BOOTCS */
return 0;
case 0x5c: /* 24MHz */
- return muldiv64(qemu_get_clock(vm_clock), 24000000, get_ticks_per_sec());
+ return muldiv64(qemu_get_clock_ns(vm_clock), 24000000, get_ticks_per_sec());
case 0x60: /* MISC */
return 0;
case 0x84: /* PROCID0 */
case 0xcc: /* SYS_TEST_OSC3 */
case 0xd0: /* SYS_TEST_OSC4 */
return 0;
+ case 0xa0: /* SYS_CFGDATA */
+ if (board_id(s) != BOARD_ID_VEXPRESS) {
+ goto bad_reg;
+ }
+ return s->sys_cfgdata;
+ case 0xa4: /* SYS_CFGCTRL */
+ if (board_id(s) != BOARD_ID_VEXPRESS) {
+ goto bad_reg;
+ }
+ return s->sys_cfgctrl;
+ case 0xa8: /* SYS_CFGSTAT */
+ if (board_id(s) != BOARD_ID_VEXPRESS) {
+ goto bad_reg;
+ }
+ return s->sys_cfgstat;
default:
+ bad_reg:
printf ("arm_sysctl_read: Bad register offset 0x%x\n", (int)offset);
return 0;
}
}
static void arm_sysctl_write(void *opaque, target_phys_addr_t offset,
- uint32_t val)
+ uint64_t val, unsigned size)
{
arm_sysctl_state *s = (arm_sysctl_state *)opaque;
s->nvflags &= ~val;
break;
case 0x40: /* RESETCTL */
+ if (board_id(s) == BOARD_ID_VEXPRESS) {
+ /* reserved: RAZ/WI */
+ break;
+ }
if (s->lockval == LOCK_VALUE) {
s->resetlevel = val;
if (val & 0x100)
/* nothing to do. */
break;
case 0x4c: /* FLASH */
+ break;
case 0x50: /* CLCD */
+ switch (board_id(s)) {
+ case BOARD_ID_PB926:
+ /* On 926 bits 13:8 are R/O, bits 1:0 control
+ * the mux that defines how to interpret the PL110
+ * graphics format, and other bits are r/w but we
+ * don't implement them to do anything.
+ */
+ s->sys_clcd &= 0x3f00;
+ s->sys_clcd |= val & ~0x3f00;
+ qemu_set_irq(s->pl110_mux_ctrl, val & 3);
+ break;
+ case BOARD_ID_EB:
+ /* The EB is the same except that there is no mux since
+ * the EB has a PL111.
+ */
+ s->sys_clcd &= 0x3f00;
+ s->sys_clcd |= val & ~0x3f00;
+ break;
+ case BOARD_ID_PBA8:
+ case BOARD_ID_PBX:
+ /* On PBA8 and PBX bit 7 is r/w and all other bits
+ * are either r/o or RAZ/WI.
+ */
+ s->sys_clcd &= (1 << 7);
+ s->sys_clcd |= val & ~(1 << 7);
+ break;
+ case BOARD_ID_VEXPRESS:
+ default:
+ /* On VExpress this register is unimplemented and will RAZ/WI */
+ break;
+ }
case 0x54: /* CLCDSER */
case 0x64: /* DMAPSR0 */
case 0x68: /* DMAPSR1 */
case 0x98: /* OSCRESET3 */
case 0x9c: /* OSCRESET4 */
break;
+ case 0xa0: /* SYS_CFGDATA */
+ if (board_id(s) != BOARD_ID_VEXPRESS) {
+ goto bad_reg;
+ }
+ s->sys_cfgdata = val;
+ return;
+ case 0xa4: /* SYS_CFGCTRL */
+ if (board_id(s) != BOARD_ID_VEXPRESS) {
+ goto bad_reg;
+ }
+ s->sys_cfgctrl = val & ~(3 << 18);
+ s->sys_cfgstat = 1; /* complete */
+ switch (s->sys_cfgctrl) {
+ case 0xc0800000: /* SYS_CFG_SHUTDOWN to motherboard */
+ qemu_system_shutdown_request();
+ break;
+ case 0xc0900000: /* SYS_CFG_REBOOT to motherboard */
+ qemu_system_reset_request();
+ break;
+ default:
+ s->sys_cfgstat |= 2; /* error */
+ }
+ return;
+ case 0xa8: /* SYS_CFGSTAT */
+ if (board_id(s) != BOARD_ID_VEXPRESS) {
+ goto bad_reg;
+ }
+ s->sys_cfgstat = val & 3;
+ return;
default:
+ bad_reg:
printf ("arm_sysctl_write: Bad register offset 0x%x\n", (int)offset);
return;
}
}
-static CPUReadMemoryFunc * const arm_sysctl_readfn[] = {
- arm_sysctl_read,
- arm_sysctl_read,
- arm_sysctl_read
+static const MemoryRegionOps arm_sysctl_ops = {
+ .read = arm_sysctl_read,
+ .write = arm_sysctl_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
};
-static CPUWriteMemoryFunc * const arm_sysctl_writefn[] = {
- arm_sysctl_write,
- arm_sysctl_write,
- arm_sysctl_write
-};
+static void arm_sysctl_gpio_set(void *opaque, int line, int level)
+{
+ arm_sysctl_state *s = (arm_sysctl_state *)opaque;
+ switch (line) {
+ case ARM_SYSCTL_GPIO_MMC_WPROT:
+ {
+ /* For PB926 and EB write-protect is bit 2 of SYS_MCI;
+ * for all later boards it is bit 1.
+ */
+ int bit = 2;
+ if ((board_id(s) == BOARD_ID_PB926) || (board_id(s) == BOARD_ID_EB)) {
+ bit = 4;
+ }
+ s->sys_mci &= ~bit;
+ if (level) {
+ s->sys_mci |= bit;
+ }
+ break;
+ }
+ case ARM_SYSCTL_GPIO_MMC_CARDIN:
+ s->sys_mci &= ~1;
+ if (level) {
+ s->sys_mci |= 1;
+ }
+ break;
+ }
+}
static int arm_sysctl_init1(SysBusDevice *dev)
{
arm_sysctl_state *s = FROM_SYSBUS(arm_sysctl_state, dev);
- int iomemtype;
- iomemtype = cpu_register_io_memory(arm_sysctl_readfn,
- arm_sysctl_writefn, s,
- DEVICE_NATIVE_ENDIAN);
- sysbus_init_mmio(dev, 0x1000, iomemtype);
- /* ??? Save/restore. */
+ memory_region_init_io(&s->iomem, &arm_sysctl_ops, s, "arm-sysctl", 0x1000);
+ sysbus_init_mmio_region(dev, &s->iomem);
+ qdev_init_gpio_in(&s->busdev.qdev, arm_sysctl_gpio_set, 2);
+ qdev_init_gpio_out(&s->busdev.qdev, &s->pl110_mux_ctrl, 1);
return 0;
}
projects / qemu.git / blobdiff