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M48T02 support (Robert Reif) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3872 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2007-12-29 09:05:30 +00:00
parent 9ed1e6671c
commit 4aed2c33eb
2 changed files with 40 additions and 15 deletions
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51
hw/m48t59.c
View File

@ -36,13 +36,13 @@
#endif
/*
* The M48T08 and M48T59 chips are very similar. The newer '59 has
* The M48T02, M48T08 and M48T59 chips are very similar. The newer '59 has
* alarm and a watchdog timer and related control registers. In the
* PPC platform there is also a nvram lock function.
*/
struct m48t59_t {
/* Model parameters */
int type; // 8 = m48t08, 59 = m48t59
int type; // 2 = m48t02, 8 = m48t08, 59 = m48t59
/* Hardware parameters */
qemu_irq IRQ;
int mem_index;
@ -210,9 +210,14 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
if (addr > 0x1FF8 && addr < 0x2000)
NVRAM_PRINTF("%s: 0x%08x => 0x%08x\n", __func__, addr, val);
if (NVRAM->type == 8 &&
(addr >= 0x1ff0 && addr <= 0x1ff7))
/* check for NVRAM access */
if ((NVRAM->type == 2 && addr < 0x7f8) ||
(NVRAM->type == 8 && addr < 0x1ff8) ||
(NVRAM->type == 59 && addr < 0x1ff0))
goto do_write;
/* TOD access */
switch (addr) {
case 0x1FF0:
/* flags register : read-only */
@ -270,10 +275,12 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
set_up_watchdog(NVRAM, val);
break;
case 0x1FF8:
case 0x07F8:
/* control */
NVRAM->buffer[0x1FF8] = (val & ~0xA0) | 0x90;
NVRAM->buffer[addr] = (val & ~0xA0) | 0x90;
break;
case 0x1FF9:
case 0x07F9:
/* seconds (BCD) */
tmp = fromBCD(val & 0x7F);
if (tmp >= 0 && tmp <= 59) {
@ -281,7 +288,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
tm.tm_sec = tmp;
set_time(NVRAM, &tm);
}
if ((val & 0x80) ^ (NVRAM->buffer[0x1FF9] & 0x80)) {
if ((val & 0x80) ^ (NVRAM->buffer[addr] & 0x80)) {
if (val & 0x80) {
NVRAM->stop_time = time(NULL);
} else {
@ -289,9 +296,10 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
NVRAM->stop_time = 0;
}
}
NVRAM->buffer[0x1FF9] = val & 0x80;
NVRAM->buffer[addr] = val & 0x80;
break;
case 0x1FFA:
case 0x07FA:
/* minutes (BCD) */
tmp = fromBCD(val & 0x7F);
if (tmp >= 0 && tmp <= 59) {
@ -301,6 +309,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
}
break;
case 0x1FFB:
case 0x07FB:
/* hours (BCD) */
tmp = fromBCD(val & 0x3F);
if (tmp >= 0 && tmp <= 23) {
@ -310,14 +319,16 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
}
break;
case 0x1FFC:
case 0x07FC:
/* day of the week / century */
tmp = fromBCD(val & 0x07);
get_time(NVRAM, &tm);
tm.tm_wday = tmp;
set_time(NVRAM, &tm);
NVRAM->buffer[0x1FFC] = val & 0x40;
NVRAM->buffer[addr] = val & 0x40;
break;
case 0x1FFD:
case 0x07FD:
/* date */
tmp = fromBCD(val & 0x1F);
if (tmp != 0) {
@ -327,6 +338,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
}
break;
case 0x1FFE:
case 0x07FE:
/* month */
tmp = fromBCD(val & 0x1F);
if (tmp >= 1 && tmp <= 12) {
@ -336,6 +348,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
}
break;
case 0x1FFF:
case 0x07FF:
/* year */
tmp = fromBCD(val);
if (tmp >= 0 && tmp <= 99) {
@ -367,9 +380,13 @@ uint32_t m48t59_read (void *opaque, uint32_t addr)
struct tm tm;
uint32_t retval = 0xFF;
if (NVRAM->type == 8 &&
(addr >= 0x1ff0 && addr <= 0x1ff7))
/* check for NVRAM access */
if ((NVRAM->type == 2 && addr < 0x078f) ||
(NVRAM->type == 8 && addr < 0x1ff8) ||
(NVRAM->type == 59 && addr < 0x1ff0))
goto do_read;
/* TOD access */
switch (addr) {
case 0x1FF0:
/* flags register */
@ -398,39 +415,47 @@ uint32_t m48t59_read (void *opaque, uint32_t addr)
set_up_watchdog(NVRAM, NVRAM->buffer[0x1FF7]);
goto do_read;
case 0x1FF8:
case 0x07F8:
/* control */
goto do_read;
case 0x1FF9:
case 0x07F9:
/* seconds (BCD) */
get_time(NVRAM, &tm);
retval = (NVRAM->buffer[0x1FF9] & 0x80) | toBCD(tm.tm_sec);
retval = (NVRAM->buffer[addr] & 0x80) | toBCD(tm.tm_sec);
break;
case 0x1FFA:
case 0x07FA:
/* minutes (BCD) */
get_time(NVRAM, &tm);
retval = toBCD(tm.tm_min);
break;
case 0x1FFB:
case 0x07FB:
/* hours (BCD) */
get_time(NVRAM, &tm);
retval = toBCD(tm.tm_hour);
break;
case 0x1FFC:
case 0x07FC:
/* day of the week / century */
get_time(NVRAM, &tm);
retval = NVRAM->buffer[0x1FFC] | tm.tm_wday;
retval = NVRAM->buffer[addr] | tm.tm_wday;
break;
case 0x1FFD:
case 0x07FD:
/* date */
get_time(NVRAM, &tm);
retval = toBCD(tm.tm_mday);
break;
case 0x1FFE:
case 0x07FE:
/* month */
get_time(NVRAM, &tm);
retval = toBCD(tm.tm_mon + 1);
break;
case 0x1FFF:
case 0x07FF:
/* year */
get_time(NVRAM, &tm);
if (NVRAM->type == 8)
@ -650,7 +675,7 @@ m48t59_t *m48t59_init (qemu_irq IRQ, target_phys_addr_t mem_base,
}
if (mem_base != 0) {
s->mem_index = cpu_register_io_memory(0, nvram_read, nvram_write, s);
cpu_register_physical_memory(mem_base, 0x4000, s->mem_index);
cpu_register_physical_memory(mem_base, size, s->mem_index);
}
if (type == 59) {
s->alrm_timer = qemu_new_timer(vm_clock, &alarm_cb, s);

4
hw/sun4m.c
View File

@ -623,7 +623,7 @@ static void sun4c_hw_init(const struct hwdef *hwdef, int RAM_size,
}
nvram = m48t59_init(slavio_irq[0], hwdef->nvram_base, 0,
hwdef->nvram_size, 8);
hwdef->nvram_size, 2);
slavio_serial_ms_kbd_init(hwdef->ms_kb_base, slavio_irq[hwdef->ms_kb_irq],
nographic);
@ -848,7 +848,7 @@ static const struct hwdef hwdefs[] = {
.sun4c_intctl_base = 0xf5000000,
.sun4c_counter_base = 0xf3000000,
.vram_size = 0x00100000,
.nvram_size = 0x2000, // XXX 0x800,
.nvram_size = 0x800,
.esp_irq = 2,
.le_irq = 3,
.clock_irq = 5,