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PL050 status register fixes. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2759 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-04-30 02:39:55 +00:00
parent 2a1d1880e5
commit 9e61ec3153
1 changed files with 25 additions and 6 deletions
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31
hw/pl050.c
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@ -1,7 +1,7 @@
/* /*
* Arm PrimeCell PL050 Keyboard / Mouse Interface * Arm PrimeCell PL050 Keyboard / Mouse Interface
* *
* Copyright (c) 2006 CodeSourcery. * Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook * Written by Paul Brook
* *
* This code is licenced under the GPL. * This code is licenced under the GPL.
@ -20,6 +20,14 @@ typedef struct {
int is_mouse; int is_mouse;
} pl050_state; } 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[] = static const unsigned char pl050_id[] =
{ 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 }; { 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 */ case 0: /* KMICR */
return s->cr; return s->cr;
case 1: /* KMISTAT */ case 1: /* KMISTAT */
/* KMIC and KMID bits not implemented. */ {
if (s->pending) { uint8_t val;
return 0x10; uint32_t stat;
} else {
return 0; 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 */ case 2: /* KMIDATA */
if (s->pending) if (s->pending)