diff options
Diffstat (limited to 'hw/char/imx_serial.c')
| -rw-r--r-- | hw/char/imx_serial.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/hw/char/imx_serial.c b/hw/char/imx_serial.c index d1e8586..1e55404 100644 --- a/hw/char/imx_serial.c +++ b/hw/char/imx_serial.c @@ -37,8 +37,8 @@ static const VMStateDescription vmstate_imx_serial = { .name = TYPE_IMX_SERIAL, - .version_id = 1, - .minimum_version_id = 1, + .version_id = 2, + .minimum_version_id = 2, .fields = (VMStateField[]) { VMSTATE_INT32(readbuff, IMXSerialState), VMSTATE_UINT32(usr1, IMXSerialState), @@ -50,6 +50,7 @@ static const VMStateDescription vmstate_imx_serial = { VMSTATE_UINT32(ubmr, IMXSerialState), VMSTATE_UINT32(ubrc, IMXSerialState), VMSTATE_UINT32(ucr3, IMXSerialState), + VMSTATE_UINT32(ucr4, IMXSerialState), VMSTATE_END_OF_LIST() }, }; @@ -71,6 +72,11 @@ static void imx_update(IMXSerialState *s) * unfortunately. */ mask = (s->ucr1 & UCR1_TXMPTYEN) ? USR2_TXFE : 0; + /* + * TCEN and TXDC are both bit 3 + */ + mask |= s->ucr4 & UCR4_TCEN; + usr2 = s->usr2 & mask; qemu_set_irq(s->irq, usr1 || usr2); @@ -163,6 +169,8 @@ static uint64_t imx_serial_read(void *opaque, hwaddr offset, return s->ucr3; case 0x23: /* UCR4 */ + return s->ucr4; + case 0x29: /* BRM Incremental */ return 0x0; /* TODO */ @@ -191,8 +199,10 @@ static void imx_serial_write(void *opaque, hwaddr offset, * qemu_chr_fe_write and background I/O callbacks */ qemu_chr_fe_write_all(&s->chr, &ch, 1); s->usr1 &= ~USR1_TRDY; + s->usr2 &= ~USR2_TXDC; imx_update(s); s->usr1 |= USR1_TRDY; + s->usr2 |= USR2_TXDC; imx_update(s); } break; @@ -265,8 +275,12 @@ static void imx_serial_write(void *opaque, hwaddr offset, s->ucr3 = value & 0xffff; break; - case 0x2d: /* UTS1 */ case 0x23: /* UCR4 */ + s->ucr4 = value & 0xffff; + imx_update(s); + break; + + case 0x2d: /* UTS1 */ qemu_log_mask(LOG_UNIMP, "[%s]%s: Unimplemented reg 0x%" HWADDR_PRIx "\n", TYPE_IMX_SERIAL, __func__, offset); /* TODO */ |