diff options
| -rw-r--r-- | CHANGELOG | 8 | ||||
| -rw-r--r-- | Makefile | 8 | ||||
| -rw-r--r-- | README | 1 | ||||
| -rw-r--r-- | drivers/cfi_flash.c | 3 | ||||
| -rw-r--r-- | rtc/Makefile | 2 | ||||
| -rw-r--r-- | rtc/max6900.c | 131 |
6 files changed, 147 insertions, 6 deletions
@@ -2,6 +2,14 @@ Changes since U-Boot 1.1.1: ====================================================================== +* Patch by Tom Armistead, 04 Jun 2004: + Add support for MAX6900 RTC + +* Patches by Ladislav Michl, 03 Jun 2004: + - fix cfi_flash.c on LE systems + - let 'make mrproper' delete u-boot.img as well + - turn printf into debug in cfi_flash.c + * Patch by Kurt Stremerch, 28 May 2004: Add support for Exys XSEngine board @@ -1338,10 +1338,10 @@ clean: rm -f board/trab/trab_fkt clobber: clean - find . -type f \ - \( -name .depend -o -name '*.srec' -o -name '*.bin' \) \ - -print \ - | xargs rm -f + find . -type f \( -name .depend \ + -o -name '*.srec' -o -name '*.bin' -o -name u-boot.img \) \ + -print0 \ + | xargs -0 rm -f rm -f $(OBJS) *.bak tags TAGS rm -fr *.*~ rm -f u-boot u-boot.map $(ALL) @@ -652,6 +652,7 @@ The following options need to be configured: CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC CONFIG_RTC_DS164x - use Dallas DS164x RTC + CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC Note that if the RTC uses I2C, then the I2C interface must also be configured. See I2C Support, below. diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index cba91f3..b79cf59 100644 --- a/drivers/cfi_flash.c +++ b/drivers/cfi_flash.c @@ -46,6 +46,7 @@ #include <common.h> #include <asm/processor.h> +#include <asm/byteorder.h> #include <linux/byteorder/swab.h> #ifdef CFG_FLASH_CFI_DRIVER @@ -1038,7 +1039,7 @@ static ulong flash_get_size (ulong base, int banknum) (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128; tmp >>= 16; erase_region_count = (tmp & 0xffff) + 1; - printf ("erase_region_count = %d erase_region_size = %d\n", + debug ("erase_region_count = %d erase_region_size = %d\n", erase_region_count, erase_region_size); for (j = 0; j < erase_region_count; j++) { info->start[sect_cnt] = sector; diff --git a/rtc/Makefile b/rtc/Makefile index 1c543d7..71fadea 100644 --- a/rtc/Makefile +++ b/rtc/Makefile @@ -30,7 +30,7 @@ LIB = librtc.a OBJS = date.o \ ds12887.o ds1302.o ds1306.o ds1307.o ds1337.o \ ds1556.o ds164x.o ds174x.o \ - m41t11.o m48t35ax.o mc146818.o mk48t59.o \ + m41t11.o max6900.o m48t35ax.o mc146818.o mk48t59.o \ mpc5xxx.o mpc8xx.o pcf8563.o s3c24x0_rtc.o all: $(LIB) diff --git a/rtc/max6900.c b/rtc/max6900.c new file mode 100644 index 0000000..73919cd --- /dev/null +++ b/rtc/max6900.c @@ -0,0 +1,131 @@ +/* + * (C) Copyright 2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * Date & Time support for MAXIM MAX6900 RTC + */ + +/* #define DEBUG */ + +#include <common.h> +#include <command.h> +#include <rtc.h> +#include <i2c.h> + +#if defined(CONFIG_RTC_MAX6900) && (CONFIG_COMMANDS & CFG_CMD_DATE) + +#ifndef CFG_I2C_RTC_ADDR +#define CFG_I2C_RTC_ADDR 0x50 +#endif + +/* ------------------------------------------------------------------------- */ + +static uchar rtc_read (uchar reg) +{ + return (i2c_reg_read (CFG_I2C_RTC_ADDR, reg)); +} + +static void rtc_write (uchar reg, uchar val) +{ + i2c_reg_write (CFG_I2C_RTC_ADDR, reg, val); + udelay(2500); +} + +static unsigned bcd2bin (uchar n) +{ + return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F)); +} + +static unsigned char bin2bcd (unsigned int n) +{ + return (((n / 10) << 4) | (n % 10)); +} + +/* ------------------------------------------------------------------------- */ + +void rtc_get (struct rtc_time *tmp) +{ + uchar sec, min, hour, mday, wday, mon, cent, year; + int retry = 1; + + do { + sec = rtc_read (0x80); + min = rtc_read (0x82); + hour = rtc_read (0x84); + mday = rtc_read (0x86); + mon = rtc_read (0x88); + wday = rtc_read (0x8a); + year = rtc_read (0x8c); + cent = rtc_read (0x92); + /* + * Check for seconds rollover + */ + if ((sec != 59) || (rtc_read(0x80) == sec)){ + retry = 0; + } + } while (retry); + + debug ( "Get RTC year: %02x mon: %02x cent: %02x mday: %02x wday: %02x " + "hr: %02x min: %02x sec: %02x\n", + year, mon, cent, mday, wday, + hour, min, sec ); + + tmp->tm_sec = bcd2bin (sec & 0x7F); + tmp->tm_min = bcd2bin (min & 0x7F); + tmp->tm_hour = bcd2bin (hour & 0x3F); + tmp->tm_mday = bcd2bin (mday & 0x3F); + tmp->tm_mon = bcd2bin (mon & 0x1F); + tmp->tm_year = bcd2bin (year) + bcd2bin(cent) * 100; + tmp->tm_wday = bcd2bin (wday & 0x07); + tmp->tm_yday = 0; + tmp->tm_isdst= 0; + + debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", + tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, + tmp->tm_hour, tmp->tm_min, tmp->tm_sec); +} + +void rtc_set (struct rtc_time *tmp) +{ + + debug ( "Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", + tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, + tmp->tm_hour, tmp->tm_min, tmp->tm_sec); + + rtc_write (0x9E, 0x00); + rtc_write (0x80, 0); /* Clear seconds to ensure no rollover */ + rtc_write (0x92, bin2bcd(tmp->tm_year / 100)); + rtc_write (0x8c, bin2bcd(tmp->tm_year % 100)); + rtc_write (0x8a, bin2bcd(tmp->tm_wday)); + rtc_write (0x88, bin2bcd(tmp->tm_mon)); + rtc_write (0x86, bin2bcd(tmp->tm_mday)); + rtc_write (0x84, bin2bcd(tmp->tm_hour)); + rtc_write (0x82, bin2bcd(tmp->tm_min )); + rtc_write (0x80, bin2bcd(tmp->tm_sec )); +} + +void rtc_reset (void) +{ +} + +#endif /* CONFIG_RTC_MAX6900 && CFG_CMD_DATE */ |