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Get the correct time

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wiidev 2021-08-01 18:00:21 +01:00
parent 08a44a2b57
commit a0c87d8949
2 changed files with 97 additions and 1 deletions
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2
Makefile
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@ -61,7 +61,7 @@ INCLUDES := source
#---------------------------------------------------------------------------------
CFLAGS = -g -ggdb -O3 -Wall -Wno-multichar -Wno-unused-parameter -Wextra $(MACHDEP) $(INCLUDE) -D_GNU_SOURCE
CXXFLAGS = $(CFLAGS)
LDFLAGS = -g -ggdb $(MACHDEP) -Wl,-Map,$(notdir $@).map,--section-start,.init=0x80B00000,-wrap,malloc,-wrap,free,-wrap,memalign,-wrap,calloc,-wrap,realloc,-wrap,malloc_usable_size
LDFLAGS = -g -ggdb $(MACHDEP) -Wl,-Map,$(notdir $@).map,--section-start,.init=0x80B00000,-wrap,malloc,-wrap,free,-wrap,memalign,-wrap,calloc,-wrap,realloc,-wrap,malloc_usable_size,-wrap,time
ifeq ($(BUILDMODE),channel)
CFLAGS += -DFULLCHANNEL

96
source/utils/time.c Normal file
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@ -0,0 +1,96 @@
/*
Time functions were changed within libogc in 2018.
Since then some Wii systems return the incorrect time.
*/
#include <ogc/conf.h>
#include <ogc/exi.h>
#include <time.h>
static u32 getrtc(u32 *gctime)
{
u32 ret = 0, time = 0, cmd = 0x20000000;
if (EXI_Lock(EXI_CHANNEL_0, EXI_DEVICE_1, NULL) == 0)
return 0;
if (EXI_Select(EXI_CHANNEL_0, EXI_DEVICE_1, EXI_SPEED8MHZ) == 0)
{
EXI_Unlock(EXI_CHANNEL_0);
return 0;
}
if (EXI_Imm(EXI_CHANNEL_0, &cmd, 4, EXI_WRITE, NULL) == 0)
ret |= 0x01;
if (EXI_Sync(EXI_CHANNEL_0) == 0)
ret |= 0x02;
if (EXI_Imm(EXI_CHANNEL_0, &time, 4, EXI_READ, NULL) == 0)
ret |= 0x04;
if (EXI_Sync(EXI_CHANNEL_0) == 0)
ret |= 0x08;
if (EXI_Deselect(EXI_CHANNEL_0) == 0)
ret |= 0x10;
EXI_Unlock(EXI_CHANNEL_0);
*gctime = time;
if (ret)
return 0;
return 1;
}
u32 SYS_GetRTC(u32 *gctime)
{
u32 cnt = 0, ret = 0;
u32 time1, time2;
while (cnt < 16)
{
if (getrtc(&time1) == 0)
ret |= 0x01;
if (getrtc(&time2) == 0)
ret |= 0x02;
if (ret)
return 0;
if (time1 == time2)
{
*gctime = time1;
return 1;
}
cnt++;
}
return 0;
}
time_t __wrap_time(time_t *timer)
{
u32 gctime = 0, bias = 0;
if (SYS_GetRTC((u32 *)&gctime) == 0)
return (time_t)0;
if (CONF_GetCounterBias(&bias) >= 0)
gctime += bias;
gctime += 946684800;
if (timer)
*timer = gctime;
return gctime;
}
/*
// This function returns the wrong time on a Brazilian Wii (4.3U)
// Reported by Walwii @ GBAtemp.net
time_t __wrap_time(time_t *timer)
{
time_t gctime;
u32 rtctime = 0, bias = 0;
if (SYS_GetRTC(&rtctime) == 0)
return (time_t)0;
gctime = rtctime;
if (CONF_GetCounterBias(&bias) >= 0)
gctime += bias;
gctime += 946684800;
if (timer)
*timer = gctime;
return gctime;
}
*/