Commit 9e61ec31 authored by pbrook's avatar pbrook

PL050 status register fixes.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2759 c046a42c-6fe2-441c-8c8c-71466251a162
parent 2a1d1880
/*
* Arm PrimeCell PL050 Keyboard / Mouse Interface
*
* Copyright (c) 2006 CodeSourcery.
* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licenced under the GPL.
......@@ -20,6 +20,14 @@ typedef struct {
int is_mouse;
} pl050_state;
#define PL050_TXEMPTY (1 << 6)
#define PL050_TXBUSY (1 << 5)
#define PL050_RXFULL (1 << 4)
#define PL050_RXBUSY (1 << 3)
#define PL050_RXPARITY (1 << 2)
#define PL050_KMIC (1 << 1)
#define PL050_KMID (1 << 0)
static const unsigned char pl050_id[] =
{ 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
......@@ -45,11 +53,22 @@ static uint32_t pl050_read(void *opaque, target_phys_addr_t offset)
case 0: /* KMICR */
return s->cr;
case 1: /* KMISTAT */
/* KMIC and KMID bits not implemented. */
if (s->pending) {
return 0x10;
} else {
return 0;
{
uint8_t val;
uint32_t stat;
val = s->last;
val = val ^ (val >> 4);
val = val ^ (val >> 2);
val = (val ^ (val >> 1)) & 1;
stat = PL050_TXEMPTY;
if (val)
stat |= PL050_RXPARITY;
if (s->pending)
stat |= PL050_RXFULL;
return stat;
}
case 2: /* KMIDATA */
if (s->pending)
......
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