diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-04-05 17:30:51 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-04-05 17:30:51 +0200 |
| commit | 34ffcb1893ee724d17671b7c388394fb646821bd (patch) | |
| tree | 3c4b656ad2b76619aa021e4ef16ac893e7bc2e16 | |
| parent | f040677be3c0eec63a5bd013a092ac5182790a50 (diff) | |
rtc: Add read/write messages
We are still having issues with bogus dates. This adds prints at boot
and time set, to make sure what we actually read and write.
* i386/i386at/rtc.c: Include <kern/printf.h>
(readtodc): Warning about reaching CENTURY_START. Print the time read
from RTC.
(writetodc): Record in RTC remainder of division of year by 100 rather
than subtracting 1900. Print the time written to RTC.
| -rw-r--r-- | i386/i386at/rtc.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/i386/i386at/rtc.c b/i386/i386at/rtc.c index 4187cbf5..51373751 100644 --- a/i386/i386at/rtc.c +++ b/i386/i386at/rtc.c @@ -49,6 +49,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. #include <sys/types.h> #include <sys/time.h> #include <kern/mach_clock.h> +#include <kern/printf.h> #include <i386/machspl.h> #include <i386/pio.h> #include <i386at/rtc.h> @@ -171,6 +172,12 @@ readtodc(uint64_t *tp) yr+CENTURY_START-CENTURY_START%100+100 : yr+CENTURY_START-CENTURY_START%100; + if (yr >= CENTURY_START+90) { + printf("FIXME: we are approaching %u, update CENTURY_START\n", CENTURY_START); + } + + printf("RTC time is %04u-%02u-%02u %02u:%02u:%02u\n", yr, mon, dom, hr, min, sec); + n = sec + 60 * min + 3600 * hr; n += (dom - 1) * 3600 * 24; @@ -219,7 +226,7 @@ writetodc(void) for (j = 1970, i = yeartoday(j); n >= i; j++, i = yeartoday(j)) n -= i; - rtclk.rtc_yr = dectohexdec(j - 1900); + rtclk.rtc_yr = dectohexdec(j % 100); if (i == 366) month[1] = 29; @@ -230,6 +237,14 @@ writetodc(void) rtclk.rtc_dom = dectohexdec(++n); + printf("Setting RTC time to %02u-%02u-%02u %02u:%02u:%02u\n", + hexdectodec(rtclk.rtc_yr), + hexdectodec(rtclk.rtc_mon), + hexdectodec(rtclk.rtc_dom), + hexdectodec(rtclk.rtc_hr), + hexdectodec(rtclk.rtc_min), + hexdectodec(rtclk.rtc_sec)); + ospl = splclock(); rtcput(&rtclk); splx(ospl); |