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X86: Put an RTC into the CMOS part of the southbridge.

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--HG--
extra : convert_revision : a614373236fe75db6e6181fc152a02b541a131f3
This commit is contained in:
Gabe Black 2008-03-25 02:15:23 -04:00
parent e5bdae15f3
commit 93dd1978a7
2 changed files with 29 additions and 43 deletions
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47
src/dev/x86/south_bridge/cmos.cc
View file

@ -71,27 +71,10 @@ uint8_t
X86ISA::Cmos::readRegister(uint8_t reg)
{
assert(reg < numRegs);
switch(reg)
{
case 0x0:
case 0x1:
case 0x2:
case 0x3:
case 0x4:
case 0x5:
case 0x6:
case 0x7:
case 0x8:
case 0x9:
case 0xA:
case 0xB:
case 0xC:
case 0xD:
warn("Reading RTC in the CMOS.\n");
break;
default:
if (reg <= 0xD) {
return rtc.readData(reg);
} else {
warn("Reading non-volitile CMOS address %x as %x.\n", reg, regs[reg]);
break;
}
return regs[reg];
}
@ -100,27 +83,11 @@ void
X86ISA::Cmos::writeRegister(uint8_t reg, uint8_t val)
{
assert(reg < numRegs);
switch(reg)
{
case 0x0:
case 0x1:
case 0x2:
case 0x3:
case 0x4:
case 0x5:
case 0x6:
case 0x7:
case 0x8:
case 0x9:
case 0xA:
case 0xB:
case 0xC:
case 0xD:
warn("Writing RTC in the CMOS.\n");
break;
default:
if (reg <= 0xD) {
rtc.writeData(reg, val);
return;
} else {
warn("Writing non-volitile CMOS address %x with %x.\n", reg, val);
break;
}
regs[reg] = val;
}

25
src/dev/x86/south_bridge/cmos.hh
View file

@ -33,6 +33,7 @@
#include "arch/x86/x86_traits.hh"
#include "base/range.hh"
#include "dev/mc146818.hh"
#include "dev/x86/south_bridge/sub_device.hh"
namespace X86ISA
@ -43,6 +44,8 @@ class Cmos : public SubDevice
protected:
uint8_t address;
struct tm foo_time;
static const int numRegs = 128;
uint8_t regs[numRegs];
@ -50,22 +53,38 @@ class Cmos : public SubDevice
uint8_t readRegister(uint8_t reg);
void writeRegister(uint8_t reg, uint8_t val);
class X86RTC : public MC146818
{
public:
X86RTC(const std::string &n, const struct tm time,
bool bcd, Tick frequency) : MC146818(n, time, bcd, frequency)
{
}
protected:
void handleEvent()
{
return;
}
} rtc;
public:
Cmos()
Cmos() : rtc("rtc", foo_time, true, 5000000000)
{
memset(regs, 0, numRegs * sizeof(uint8_t));
address = 0;
}
Cmos(Tick _latency) : SubDevice(_latency)
Cmos(Tick _latency) : SubDevice(_latency),
rtc("rtc", foo_time, true, 5000000000)
{
memset(regs, 0, numRegs * sizeof(uint8_t));
address = 0;
}
Cmos(Addr start, Addr size, Tick _latency) :
SubDevice(start, size, _latency)
SubDevice(start, size, _latency),
rtc("rtc", foo_time, true, 5000000000)
{
memset(regs, 0, numRegs * sizeof(uint8_t));
address = 0;