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authorPaul Mackerras <paulus@samba.org>2005-11-18 15:52:38 +1100
committerPaul Mackerras <paulus@samba.org>2005-11-18 15:52:38 +1100
commit49e16b7becd6320bde51aa238c11815708f836d9 (patch)
tree38f6159992e890abe1134cecfff36b94146b4065
parent6146eed1e972a7de93ce2e36adc5812de81e879c (diff)
powerpc: time-of-day fixes for 32-bit CHRP systems
This makes 32-bit CHRP systems use the RTAS time-of-day routines if available. It fixes a bug in the RTAS time-of-day routines where they were storing a 64-bit timebase value in an unsigned long by making those variables u64. Also, the direct-access time-of-day routines had the wrong convention for the month and year in the struct rtc_time. Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/kernel/rtas-rtc.c6
-rw-r--r--arch/powerpc/platforms/chrp/setup.c11
-rw-r--r--arch/powerpc/platforms/chrp/time.c3
3 files changed, 14 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/rtas-rtc.c b/arch/powerpc/kernel/rtas-rtc.c
index 7b948662704..635d3b9a881 100644
--- a/arch/powerpc/kernel/rtas-rtc.c
+++ b/arch/powerpc/kernel/rtas-rtc.c
@@ -15,7 +15,7 @@ unsigned long __init rtas_get_boot_time(void)
{
int ret[8];
int error, wait_time;
- unsigned long max_wait_tb;
+ u64 max_wait_tb;
max_wait_tb = get_tb() + tb_ticks_per_usec * 1000 * MAX_RTC_WAIT;
do {
@@ -45,7 +45,7 @@ void rtas_get_rtc_time(struct rtc_time *rtc_tm)
{
int ret[8];
int error, wait_time;
- unsigned long max_wait_tb;
+ u64 max_wait_tb;
max_wait_tb = get_tb() + tb_ticks_per_usec * 1000 * MAX_RTC_WAIT;
do {
@@ -80,7 +80,7 @@ void rtas_get_rtc_time(struct rtc_time *rtc_tm)
int rtas_set_rtc_time(struct rtc_time *tm)
{
int error, wait_time;
- unsigned long max_wait_tb;
+ u64 max_wait_tb;
max_wait_tb = get_tb() + tb_ticks_per_usec * 1000 * MAX_RTC_WAIT;
do {
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 4099ddab920..dda5f2c72c2 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -257,6 +257,13 @@ void __init chrp_setup_arch(void)
if (rtas_token("display-character") >= 0)
ppc_md.progress = rtas_progress;
+ /* use RTAS time-of-day routines if available */
+ if (rtas_token("get-time-of-day") != RTAS_UNKNOWN_SERVICE) {
+ ppc_md.get_boot_time = rtas_get_boot_time;
+ ppc_md.get_rtc_time = rtas_get_rtc_time;
+ ppc_md.set_rtc_time = rtas_set_rtc_time;
+ }
+
#ifdef CONFIG_BOOTX_TEXT
if (ppc_md.progress == NULL && boot_text_mapped)
ppc_md.progress = btext_progress;
@@ -505,9 +512,11 @@ void __init chrp_init(void)
ppc_md.halt = rtas_halt;
ppc_md.time_init = chrp_time_init;
+ ppc_md.calibrate_decr = chrp_calibrate_decr;
+
+ /* this may get overridden with rtas routines later... */
ppc_md.set_rtc_time = chrp_set_rtc_time;
ppc_md.get_rtc_time = chrp_get_rtc_time;
- ppc_md.calibrate_decr = chrp_calibrate_decr;
#ifdef CONFIG_SMP
smp_ops = &chrp_smp_ops;
diff --git a/arch/powerpc/platforms/chrp/time.c b/arch/powerpc/platforms/chrp/time.c
index 9e53535ddb8..737ee5d9f0a 100644
--- a/arch/powerpc/platforms/chrp/time.c
+++ b/arch/powerpc/platforms/chrp/time.c
@@ -87,7 +87,6 @@ int chrp_set_rtc_time(struct rtc_time *tmarg)
chrp_cmos_clock_write((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT);
- tm.tm_year -= 1900;
if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
BIN_TO_BCD(tm.tm_sec);
BIN_TO_BCD(tm.tm_min);
@@ -156,7 +155,7 @@ void chrp_get_rtc_time(struct rtc_time *tm)
BCD_TO_BIN(mon);
BCD_TO_BIN(year);
}
- if ((year += 1900) < 1970)
+ if (year < 70)
year += 100;
tm->tm_sec = sec;
tm->tm_min = min;