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[src/trunk]: src/sys/arch/hp300/stand/common Add RTC support for HP9000/425e ...
details: https://anonhg.NetBSD.org/src/rev/fe564dd84bb5
branches: trunk
changeset: 795577:fe564dd84bb5
user: tsutsui <tsutsui%NetBSD.org@localhost>
date: Sat Apr 19 06:04:58 2014 +0000
description:
Add RTC support for HP9000/425e to bootloader too.
Also put several cleanup:
- make local functions and variables static
- use proper variable types
- some KNF
Note it turns out that extreme slowness of netboot on hp300 is
caused by the too slow access of the traditional RTC chip at intio
(i.e. netboot on 425e is so much faster than others). Oh well.
diffstat:
sys/arch/hp300/stand/common/clock.c | 105 ++++++++++++++++++++++---------
sys/arch/hp300/stand/common/samachdep.h | 6 +-
2 files changed, 74 insertions(+), 37 deletions(-)
diffs (201 lines):
diff -r 30d90b0a85a2 -r fe564dd84bb5 sys/arch/hp300/stand/common/clock.c
--- a/sys/arch/hp300/stand/common/clock.c Sat Apr 19 05:37:54 2014 +0000
+++ b/sys/arch/hp300/stand/common/clock.c Sat Apr 19 06:04:58 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: clock.c,v 1.11 2011/02/08 20:20:14 rmind Exp $ */
+/* $NetBSD: clock.c,v 1.12 2014/04/19 06:04:58 tsutsui Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@@ -46,6 +46,10 @@
#include <hp300/stand/common/hilreg.h>
+#include <hp300/dev/frodoreg.h> /* for APCI offsets */
+#include <hp300/dev/intioreg.h> /* for frodo offsets */
+#include <dev/ic/mc146818reg.h>
+
#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <hp300/stand/common/samachdep.h>
@@ -61,7 +65,7 @@
#define NUM_BBC_REGS 12
#define leapyear(year) ((year) % 4 == 0)
-#define range_test(n, l, h) if ((n) < (l) || (n) > (h)) return 0
+#define range_test(n, l, h) if ((n) < (l) || (n) > (h)) return false
#define days_in_year(a) (leapyear(a) ? 366 : 365)
#define days_in_month(a) (month_days[(a) - 1])
#define bbc_to_decimal(a,b) (bbc_registers[a] * 10 + bbc_registers[b])
@@ -70,48 +74,73 @@
31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
-u_char bbc_registers[13];
-struct hil_dev *bbcaddr = BBCADDR;
+static uint8_t bbc_registers[13];
+static struct hil_dev *bbcaddr = BBCADDR;
+
+static volatile uint8_t *mcclock =
+ (volatile uint8_t *)(INTIOBASE + FRODO_BASE + FRODO_CALENDAR);
-static int bbc_to_gmt(satime_t *);
+static bool clock_to_gmt(satime_t *);
+
+static void read_bbc(void);
+static uint8_t read_bbc_reg(int);
+static uint8_t mc_read(u_int);
satime_t
getsecs(void)
{
- static int bbcinited = 0;
+ static bool clockinited = false;
satime_t timbuf = 0;
- if (!bbc_to_gmt(&timbuf) && !bbcinited)
+ if (!clock_to_gmt(&timbuf) && !clockinited)
printf("WARNING: bad date in battery clock\n");
- bbcinited = 1;
+ clockinited = true;
/* Battery clock does not store usec's, so forget about it. */
return timbuf;
}
-
-static int
-bbc_to_gmt(satime_t *timbuf)
+static bool
+clock_to_gmt(satime_t *timbuf)
{
int i;
- u_long tmp;
+ satime_t tmp;
int year, month, day, hour, min, sec;
- read_bbc();
-
- sec = bbc_to_decimal(1, 0);
- min = bbc_to_decimal(3, 2);
+ if (machineid == HP_425 && mmuid == MMUID_425_E) {
+ /* 425e uses mcclock on the frodo utility chip */
+ while ((mc_read(MC_REGA) & MC_REGA_UIP) != 0)
+ continue;
+ sec = mc_read(MC_SEC);
+ min = mc_read(MC_MIN);
+ hour = mc_read(MC_HOUR);
+ day = mc_read(MC_DOM);
+ month = mc_read(MC_MONTH);
+ year = mc_read(MC_YEAR) + 1900;
+ } else {
+ /* Use the traditional HIL bbc for all other models */
+ read_bbc();
- /*
- * Hours are different for some reason. Makes no sense really.
- */
- hour = ((bbc_registers[5] & 0x03) * 10) + bbc_registers[4];
- day = bbc_to_decimal(8, 7);
- month = bbc_to_decimal(10, 9);
- year = bbc_to_decimal(12, 11) + 1900;
+ sec = bbc_to_decimal(1, 0);
+ min = bbc_to_decimal(3, 2);
+
+ /*
+ * Hours are different for some reason. Makes no sense really.
+ */
+ hour = ((bbc_registers[5] & 0x03) * 10) + bbc_registers[4];
+ day = bbc_to_decimal(8, 7);
+ month = bbc_to_decimal(10, 9);
+ year = bbc_to_decimal(12, 11) + 1900;
+ }
+
if (year < STARTOFTIME)
year += 100;
+#ifdef CLOCK_DEBUG
+ printf("clock todr: %u/%u/%u %u:%u:%u\n",
+ year, month, day, hour, min, sec);
+#endif
+
range_test(hour, 0, 23);
range_test(day, 1, 31);
range_test(month, 1, 12);
@@ -130,31 +159,32 @@
tmp = ((tmp * 24 + hour) * 60 + min) * 60 + sec;
*timbuf = tmp;
- return 1;
+ return true;
}
-void
+static void
read_bbc(void)
{
- int i, read_okay;
+ int i;
+ bool read_okay;
- read_okay = 0;
+ read_okay = false;
while (!read_okay) {
- read_okay = 1;
+ read_okay = true;
for (i = 0; i <= NUM_BBC_REGS; i++)
bbc_registers[i] = read_bbc_reg(i);
for (i = 0; i <= NUM_BBC_REGS; i++)
if (bbc_registers[i] != read_bbc_reg(i))
- read_okay = 0;
+ read_okay = false;
}
}
-u_char
+static uint8_t
read_bbc_reg(int reg)
{
- u_char data = reg;
+ uint8_t data = reg;
- if (bbcaddr) {
+ if (bbcaddr != NULL) {
#if 0
send_hil_cmd(bbcaddr, BBC_SET_REG, &data, 1, NULL);
send_hil_cmd(bbcaddr, BBC_READ_REG, NULL, 0, &data);
@@ -171,3 +201,14 @@
}
return data;
}
+
+uint8_t
+mc_read(u_int reg)
+{
+ uint8_t datum;
+
+ mcclock[0] = (uint8_t)reg;
+ datum = mcclock[1 << 2]; /* frodo chip has 4 byte stride */
+
+ return datum;
+}
diff -r 30d90b0a85a2 -r fe564dd84bb5 sys/arch/hp300/stand/common/samachdep.h
--- a/sys/arch/hp300/stand/common/samachdep.h Sat Apr 19 05:37:54 2014 +0000
+++ b/sys/arch/hp300/stand/common/samachdep.h Sat Apr 19 06:04:58 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: samachdep.h,v 1.16 2008/07/16 13:44:51 tsutsui Exp $ */
+/* $NetBSD: samachdep.h,v 1.17 2014/04/19 06:04:58 tsutsui Exp $ */
/*
* Copyright (c) 1982, 1990, 1993
@@ -66,10 +66,6 @@
void configure(void);
int sctoaddr(int);
-/* clock.c */
-void read_bbc(void);
-u_char read_bbc_reg(int);
-
/* cons.c */
extern int cons_scode;
void cninit(void);
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