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Define methods get-time and set-time of /pci/mac-io/via-cuda/rtc.

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We can now have date&time from our openbios command line interface...

Signed-off-by: Laurent Vivier <Laurent@vivier.eu>


git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@606 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Laurent Vivier
2009-11-10 21:57:00 +00:00
parent 739db05755
commit b45c197d16
1 changed files with 110 additions and 1 deletions
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111
drivers/cuda.c
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@@ -58,7 +58,9 @@
#define CUDA_PACKET 1
/* CUDA commands (2nd byte) */
#define CUDA_POWERDOWN 0xa
#define CUDA_GET_TIME 0x03
#define CUDA_SET_TIME 0x09
#define CUDA_POWERDOWN 0x0a
#define CUDA_RESET_SYSTEM 0x11
static uint8_t cuda_readb (cuda_t *dev, int reg)
@@ -233,8 +235,115 @@ rtc_open(int *idx)
RET(-1);
}
/*
* get-time ( -- second minute hour day month year )
*
*/
static const int days_month[12] =
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
static const int days_month_leap[12] =
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
static inline int is_leap(int year)
{
return ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
}
static void
rtc_get_time(int *idx)
{
uint8_t cmdbuf[2], obuf[64];
ucell second, minute, hour, day, month, year;
uint32_t now;
int current;
const int *days;
cmdbuf[0] = CUDA_GET_TIME;
cuda_request(main_cuda, CUDA_PACKET, cmdbuf, sizeof(cmdbuf), obuf);
/* seconds since 01/01/1904 */
now = (obuf[3] << 24) + (obuf[4] << 16) + (obuf[5] << 8) + obuf[6];
second = now % 60;
now /= 60;
minute = now % 60;
now /= 60;
hour = now % 24;
now /= 24;
year = now * 100 / 36525;
now -= year * 36525 / 100;
year += 1904;
days = is_leap(year) ? days_month_leap : days_month;
current = 0;
month = 0;
while (month < 12) {
if (now <= current + days[month]) {
break;
}
current += days[month];
month++;
}
month++;
day = now - current;
PUSH(second);
PUSH(minute);
PUSH(hour);
PUSH(day);
PUSH(month);
PUSH(year);
}
/*
* set-time ( second minute hour day month year -- )
*
*/
static void
rtc_set_time(int *idx)
{
uint8_t cmdbuf[5], obuf[3];
ucell second, minute, hour, day, month, year;
const int *days;
uint32_t now;
unsigned int nb_days;
int i;
year = POP();
month = POP();
day = POP();
hour = POP();
minute = POP();
second = POP();
days = is_leap(year) ? days_month_leap : days_month;
nb_days = (year - 1904) * 36525 / 100 + day;
for (i = 0; i < month - 1; i++)
nb_days += days[i];
now = (((nb_days * 24) + hour) * 60 + minute) * 60 + second;
cmdbuf[0] = CUDA_SET_TIME;
cmdbuf[1] = now >> 24;
cmdbuf[2] = now >> 16;
cmdbuf[3] = now >> 8;
cmdbuf[4] = now;
cuda_request(main_cuda, CUDA_PACKET, cmdbuf, sizeof(cmdbuf), obuf);
}
NODE_METHODS(rtc) = {
{ "open", rtc_open },
{ "get-time", rtc_get_time },
{ "set-time", rtc_set_time },
};
static void