diff options
Diffstat (limited to 'board/bmw')
| -rw-r--r-- | board/bmw/Makefile | 43 | ||||
| -rw-r--r-- | board/bmw/README | 340 | ||||
| -rw-r--r-- | board/bmw/m48t59y.c | 323 |
3 files changed, 706 insertions, 0 deletions
diff --git a/board/bmw/Makefile b/board/bmw/Makefile new file mode 100644 index 00000000000..46fe7910e74 --- /dev/null +++ b/board/bmw/Makefile @@ -0,0 +1,43 @@ +# +# (C) Copyright 2002 +# James F. Dougherty, Broadcom Corporation, jfd@broadcom.com +# 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 +# + +include $(TOPDIR)/config.mk + +LIB = lib$(BOARD).a + +OBJS = $(BOARD).o flash.o ns16550.o serial.o m48t59y.o + +SOBJS = early_init.o + +$(LIB): .depend $(OBJS) $(SOBJS) + $(AR) crv $@ $^ + +######################################################################### + +.depend: Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c) + $(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@ + +sinclude .depend + +######################################################################### diff --git a/board/bmw/README b/board/bmw/README new file mode 100644 index 00000000000..55ef56ebe1b --- /dev/null +++ b/board/bmw/README @@ -0,0 +1,340 @@ +Broadcom 95xx BMW CPCI Platform + +Overview +========= +BMW is an MPC8245 system controller featuring: +* 3U CPCI Form Factor +* BCM5703 Gigabit Ethernet +* M48T59Y NVRAM +* 16MB DOC +* DIP Socket for Socketed DOC up to 1GB +* 64MB SDRAM +* LCD Display +* Configurable Jumper options for 66,85, and 100Mhz memory bus + + +BMW System Address Map +====================== +BMW uses the MPC8245 CHRP Address MAP B found in the MPC8245 Users Manual +(P.121, Section 3.1 Address Maps, Address Map B). Other I/O devices found +onboard the processor module are listed briefly below: + +0x00000000 - 0x40000000 - 64MB SDRAM SIMM + (Unregistered PC-100 SDRAM DIMM Module) + +0xFF000000 - 0xFF001FFF - M-Systems DiskOnChip (TM) 2000 + TSOP 16MB (MD2211-D16-V3) + +0x70000000 - 0x70001FFF - M-Systems DiskOnChip (TM) 2000 + DIP32 (Socketed 16MB - 1GB ) * + NOTE: this is not populated on all systems. + +0x7c000000 - 0x7c000000 - Reset Register + (Write 0 to reset) + +0x7c000001 - 0x7c000001 - System LED + (Clear Bit 7 to turn on, set to shut off) + +0x7c000002 - 0x7c000002 - M48T59 Watchdog IRQ3 + (Clear bit 7 to reset, set to assert IRQ3) + +0x7c000003 - 0x7c000003 - M48T59 Write-Protect Register + (Clear bit 7 to make R/W, set to make R/O) + +0x7c002000 - 0x7c002003 - Infineon OSRAM DLR2416 4 Character + 5x7 Dot Matrix Alphanumeric Display + (Each byte sets the appropriate character) + +0x7c004000 - 0x7c005FF0 - SGS-THOMSON M48T59Y 8K NVRAM/RTC + NVRAM Memory Region + +0x7c005FF0 - 0x7c005FFF - SGS-THOMSON M48T59Y 8K NVRAM/RTC + Realtime Clock Registers + +0xFFF00000 - 0xFFF80000 - 512K PLCC32 BootRom + (AMD AM29F040, ST 29W040B) + +0xFFF00100 - System Reset Vector + + +IO/MMU (BAT) Configuration +====================== +The following Block-Address-Translation (BAT) configuration +is recommended to access all I/O devices. + +#define CFG_IBAT0L (0x00000000 | BATL_PP_10 | BATL_MEMCOHERENCE) +#define CFG_IBAT0U (0x00000000 | BATU_BL_256M | BATU_VS | BATU_VP) + +#define CFG_IBAT1L (0x70000000 | BATL_PP_10 | BATL_CACHEINHIBIT) +#define CFG_IBAT1U (0x70000000 | BATU_BL_256M | BATU_VS | BATU_VP) + +#define CFG_IBAT2L (0x80000000 | BATL_PP_10 | BATL_CACHEINHIBIT) +#define CFG_IBAT2U (0x80000000 | BATU_BL_256M | BATU_VS | BATU_VP) + +#define CFG_IBAT3L (0xF0000000 | BATL_PP_10 | BATL_CACHEINHIBIT) +#define CFG_IBAT3U (0xF0000000 | BATU_BL_256M | BATU_VS | BATU_VP) + +#define CFG_DBAT0L CFG_IBAT0L +#define CFG_DBAT0U CFG_IBAT0U +#define CFG_DBAT1L CFG_IBAT1L +#define CFG_DBAT1U CFG_IBAT1U +#define CFG_DBAT2L CFG_IBAT2L +#define CFG_DBAT2U CFG_IBAT2U +#define CFG_DBAT3L CFG_IBAT3L +#define CFG_DBAT3U CFG_IBAT3U + + +Interrupt Mappings +====================== +BMW uses MPC8245 discrete mode interrupts. With the following +hardwired mappings: + +BCM5701 10/100/1000 Ethernet IRQ1 +CompactPCI Interrupt A IRQ2 +RTC/Watchdog Interrupt IRQ3 +Internal NS16552 UART IRQ4 + + +Jumper Settings +====================== + +BMW has a jumper (JP600) for selecting 66, 85, or 100Mhz memory bus. +A jumper (X) is a 0 bit. + +Hence 66= 10110 + 85= 11000 + 100= 10000 + +Jumper Settings for various Speeds +======================= +J1 J2 J3 J4 J5 + X X 66Mhz +======================= +J1 J2 J3 J4 J5 + X X X 85Mhz +======================= +J1 J2 J3 J4 J5 + X X X X 100Mhz +======================= + +Obviously, 100Mhz memory bus is recommended for optimum performance. + + +U-Boot +=============== +Broadcom BMW board is supported under config_BWM option. +Supported features: + +- NVRAM setenv/getenv (used by Linux Kernel for configuration variables) +- BCM570x TFTP file transfer support +- LCD Display Support +- DOC Support - (underway) + + + +U-Boot 1.2.0 (Aug 6 2002 - 17:44:48) + +CPU: MPC8245 Revision 16.20 at 264 MHz: 16 kB I-Cache 16 kB D-Cache +Board: BMW MPC8245/KAHLUA2 - CHRP (MAP B) +Built: Aug 6 2002 at 17:44:37 +Local Bus at 66 MHz +DRAM: 64 MB +FLASH: 4095 MB +In: serial +Out: serial +Err: serial +DOC: No DiskOnChip found +Hit any key to stop autoboot: 0 +=>printenv +bootdelay=5 +baudrate=9600 +clocks_in_mhz=1 +hostname=switch-2 +bootcmd=tftp 100000 vmlinux.img;bootm +gateway=10.16.64.1 +ethaddr=00:00:10:18:10:10 +nfsroot=172.16.40.111:/boot/root-fs +filesize=5ec8c +netmask=255.255.240.0 +ipaddr=172.16.40.114 +serverip=172.16.40.111 +root=/dev/nfs +stdin=serial +stdout=serial +stderr=serial + +Environment size: 315/8172 bytes +=>boot + + + + + + + +DevTools +======== +ELDK + DENX Embedded Linux Development Kit + +ROM Emulator + Grammar Engine PROMICE P1160-90-AI21E (2MBx8bit, 90ns access time) + Grammar Engine PL32E 32Pin PLCC Emulation cables + Grammar Engine 3VA8CON (3Volt adapter with Short cables) + Grammar Engine FPNET PromICE Ethernet Adapters + +ICE + WRS/EST VisionICE-II (PPC8240) + + + +=>reset + + +U-Boot 1.2.0 (Aug 6 2002 - 17:44:48) + +CPU: MPC8245 Revision 16.20 at 264 MHz: 16 kB I-Cache 16 kB D-Cache +Board: BMW MPC8245/KAHLUA2 - CHRP (MAP B) +Built: Aug 6 2002 at 17:44:37 +Local Bus at 66 MHz +DRAM: 64 MB +FLASH: 4095 MB +In: serial +Out: serial +Err: serial +DOC: No DiskOnChip found +Hit any key to stop autoboot: 0 + +Broadcom BCM5701 1000Base-T: bus 0, device 13, function 0: MBAR=0x80100000 +BCM570x PCI Memory base address @0x80100000 +eth0:Broadcom BCM5701 1000Base-T: 100 Mbps half duplex link up, flow control OFF +eth0: Broadcom BCM5701 1000Base-T @0x80100000,node addr 000010181010 +eth0: BCM5700 with Broadcom BCM5701 Integrated Copper transceiver found +eth0: 32-bit PCI 33MHz, MTU: 1500,Rx Checksum ON +ARP broadcast 1 +TFTP from server 172.16.40.111; our IP address is 172.16.40.114 +Filename 'vmlinux.img'. +Load address: 0x100000 +Loading: ################################################################# + ####################################T ############################# + ###################### +done +Bytes transferred = 777199 (bdbef hex) + +eth0:Broadcom BCM5701 1000Base-T,HALT,POWER DOWN,done - offline. +## Booting image at 00100000 ... + Image Name: vmlinux.bin.gz + Created: 2002-08-06 6:30:13 UTC + Image Type: PowerPC Linux Kernel Image (gzip compressed) + Data Size: 777135 Bytes = 758 kB = 0 MB + Load Address: 00000000 + Entry Point: 00000000 + Verifying Checksum ... OK + Uncompressing Kernel Image ... OK +Memory BAT mapping: BAT2=64Mb, BAT3=0Mb, residual: 0Mb +Linux version 2.4.19-rc3 (jfd@que) (gcc version 2.95.3 20010111 (prerelease/franzo/20010111)) #168 Mon Aug 5 23:29:20 PDT 2002 +CPU:82xx: 32 I-Cache Block Size, 32 D-Cache Block Size PVR: 0x810000 +U-Boot Environment: 0xc01b08f0 +IP PNP: 802.3 Ethernet Address=<0:0:10:18:10:10> +cpu0: MPC8245/KAHLUA-II : BMW Platform : 64MB RAM: BPLD Rev. 6e +NOTICE: mounting root file system via NFS +IP PNP: switch-2: eth0 IP 172.16.40.114/255.255.240.0 gateway 10.16.64.1 server 172.16.40.111 +On node 0 totalpages: 16384 +zone(0): 16384 pages. +zone(1): 0 pages. +zone(2): 0 pages. +Kernel command line: console=ttyS0,9600 ip=172.16.40.114:172.16.40.111:10.16.64.1:255.255.240.0:switch-2:eth0 root=/dev/nfs rw nfsroot=172.16.40.111:/boot/root-fs,timeo=200,retrans=500 nfsaddrs=172.16.40.114:172.16.40.111 +root_dev_setup:/dev/nfs or 00:ff +time_init: decrementer frequency = 16.501145 MHz +Calibrating delay loop... 175.71 BogoMIPS +Memory: 62572k available (1396k kernel code, 436k data, 100k init, 0k highmem) +Dentry cache hash table entries: 8192 (order: 4, 65536 bytes) +Inode cache hash table entries: 4096 (order: 3, 32768 bytes) +Mount-cache hash table entries: 1024 (order: 1, 8192 bytes) +Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes) +Page-cache hash table entries: 16384 (order: 4, 65536 bytes) +POSIX conformance testing by UNIFIX +PCI: Probing PCI hardware +Linux NET4.0 for Linux 2.4 +Based upon Swansea University Computer Society NET3.039 +Initializing RT netlink socket +Starting kswapd +devfs: v1.12a (20020514) Richard Gooch (rgooch@atnf.csiro.au) +devfs: devfs_debug: 0x0 +devfs: boot_options: 0x1 +Installing knfsd (copyright (C) 1996 okir@monad.swb.de). +pty: 256 Unix98 ptys configured +Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled +Testing ttyS0 (0xf7f51500, 0xf7f51500)... +Testing ttyS1 (0xfc004600, 0xfc004600)... +ttyS00 at 0xf7f51500 (irq = 24) is a ST16650 +ttyS01 at 0xfc004600 (irq = 25) is a 16550A +Real Time Clock Driver v1.10e +RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize +loop: loaded (max 8 devices) +TFFS 5.1.1 Flash disk driver for DiskOnChip +Copyright (C) 1998,2001 M-Systems Flash Disk Pioneers Ltd. +DOC device(s) found: 1 +fl_init: registered device at major: 100 +fl_geninit: registered device at major: 100 +Partition check: + fla: p1 +partition: /dev/fl/0: start_sect: 0,nr_sects: 32000 Fl_blk_size[]: 16000KB +partition: /dev/fl/1: start_sect: 2,nr_sects: 31998 Fl_blk_size[]: 15999KB +partition: /dev/fl/2: start_sect: 0,nr_sects: 0 Fl_blk_size[]: 0KB +partition: /dev/fl/3: start_sect: 0,nr_sects: 0 Fl_blk_size[]: 0KB +Broadcom Gigabit Ethernet Driver bcm5700 ver. 3.0.7 (07/17/02) +eth0: Broadcom BCM5701 found at mem bfff0000, IRQ 1, node addr 000010181010 +eth0: Broadcom BCM5701 Integrated Copper transceiver found +eth0: Scatter-gather ON, 64-bit DMA ON, Tx Checksum ON, Rx Checksum ON, 802.1Q VLAN ON +bond0 registered without MII link monitoring, in bonding mode. +rtc: unable to get misc minor +NET4: Linux TCP/IP 1.0 for NET4.0 +IP Protocols: ICMP, UDP, TCP, IGMP +IP: routing cache hash table of 512 buckets, 4Kbytes +TCP: Hash tables configured (established 4096 bind 4096) +bcm5700: eth0 NIC Link is UP, 100 Mbps half duplex +IP-Config: Gateway not on directly connected network. +NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. +802.1Q VLAN Support v1.7 Ben Greear <greearb@candelatech.com> +All bugs added by David S. Miller <davem@redhat.com> +Looking up port of RPC 100003/2 on 172.16.40.111 +Looking up port of RPC 100005/1 on 172.16.40.111 +VFS: Mounted root (nfs filesystem). +Mounted devfs on /dev +Freeing unused kernel memory: 100k init +INIT: version 2.78 booting +Mounting local filesystems... +not mounted anything +Setting up symlinks in /dev...done. +Setting up extra devices in /dev...done. +Starting devfsd...Started device management daemon for /dev +INIT: Entering runlevel: 2 +Starting internet superserver: inetd. + + +Welcome to Linux/PPC +MPC8245/BMW + + + +switch-2 login: root +Password: +PAM_unix[49]: (login) session opened for user root by LOGIN(uid=0) +Last login: Thu Nov 25 11:51:14 1920 on console + + +Welcome to Linux/PPC +MPC8245/BMW + + + +login[49]: ROOT LOGIN on `console' + +root@switch-2:~# cat /proc/cpuinfo +cpu : 82xx +revision : 16.20 (pvr 8081 1014) +bogomips : 175.71 +vendor : Broadcom +machine : BMW/MPC8245 +root@switch-2:~# diff --git a/board/bmw/m48t59y.c b/board/bmw/m48t59y.c new file mode 100644 index 00000000000..469f1adaf5e --- /dev/null +++ b/board/bmw/m48t59y.c @@ -0,0 +1,323 @@ +/* + * SGS M48-T59Y TOD/NVRAM Driver + * + * (C) Copyright 2000 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 1999, by Curt McDowell, 08-06-99, Broadcom Corp. + * + * (C) Copyright 2001, James Dougherty, 07/18/01, Broadcom Corp. + * + * 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 + */ + +/* + * SGS M48-T59Y TOD/NVRAM Driver + * + * The SGS M48 an 8K NVRAM starting at offset M48_BASE_ADDR and + * continuing for 8176 bytes. After that starts the Time-Of-Day (TOD) + * registers which are used to set/get the internal date/time functions. + * + * This module implements Y2K compliance by taking full year numbers + * and translating back and forth from the TOD 2-digit year. + * + * NOTE: for proper interaction with an operating system, the TOD should + * be used to store Universal Coordinated Time (GMT) and timezone + * conversions should be used. + * + * Here is a diagram of the memory layout: + * + * +---------------------------------------------+ 0xffe0a000 + * | Non-volatile memory | . + * | | . + * | (8176 bytes of Non-volatile memory) | . + * | | . + * +---------------------------------------------+ 0xffe0bff0 + * | Flags | + * +---------------------------------------------+ 0xffe0bff1 + * | Unused | + * +---------------------------------------------+ 0xffe0bff2 + * | Alarm Seconds | + * +---------------------------------------------+ 0xffe0bff3 + * | Alarm Minutes | + * +---------------------------------------------+ 0xffe0bff4 + * | Alarm Date | + * +---------------------------------------------+ 0xffe0bff5 + * | Interrupts | + * +---------------------------------------------+ 0xffe0bff6 + * | WatchDog | + * +---------------------------------------------+ 0xffe0bff7 + * | Calibration | + * +---------------------------------------------+ 0xffe0bff8 + * | Seconds | + * +---------------------------------------------+ 0xffe0bff9 + * | Minutes | + * +---------------------------------------------+ 0xffe0bffa + * | Hours | + * +---------------------------------------------+ 0xffe0bffb + * | Day | + * +---------------------------------------------+ 0xffe0bffc + * | Date | + * +---------------------------------------------+ 0xffe0bffd + * | Month | + * +---------------------------------------------+ 0xffe0bffe + * | Year (2 digits only) | + * +---------------------------------------------+ 0xffe0bfff + */ +#include <common.h> +#include <rtc.h> +#include "bmw.h" + +/* + * Imported from mousse.h: + * + * TOD_REG_BASE Base of m48t59y TOD registers + * SYS_TOD_UNPROTECT() Disable NVRAM write protect + * SYS_TOD_PROTECT() Re-enable NVRAM write protect + */ + +#define YEAR 0xf +#define MONTH 0xe +#define DAY 0xd +#define DAY_OF_WEEK 0xc +#define HOUR 0xb +#define MINUTE 0xa +#define SECOND 0x9 +#define CONTROL 0x8 +#define WATCH 0x7 +#define INTCTL 0x6 +#define WD_DATE 0x5 +#define WD_HOUR 0x4 +#define WD_MIN 0x3 +#define WD_SEC 0x2 +#define _UNUSED 0x1 +#define FLAGS 0x0 + +#define M48_ADDR ((volatile unsigned char *) TOD_REG_BASE) + +int m48_tod_init(void) +{ + SYS_TOD_UNPROTECT(); + + M48_ADDR[CONTROL] = 0; + M48_ADDR[WATCH] = 0; + M48_ADDR[INTCTL] = 0; + + /* + * If the oscillator is currently stopped (as on a new part shipped + * from the factory), start it running. + * + * Here is an example of the TOD bytes on a brand new M48T59Y part: + * 00 00 00 00 00 00 00 00 00 88 8c c3 bf c8 f5 01 + */ + + if (M48_ADDR[SECOND] & 0x80) + M48_ADDR[SECOND] = 0; + + /* Is battery low */ + if ( M48_ADDR[FLAGS] & 0x10) { + printf("NOTICE: Battery low on Real-Time Clock (replace SNAPHAT).\n"); + } + + SYS_TOD_PROTECT(); + + return 0; +} + +/* + * m48_tod_set + */ + +static int to_bcd(int value) +{ + return value / 10 * 16 + value % 10; +} + +static int from_bcd(int value) +{ + return value / 16 * 10 + value % 16; +} + +static int day_of_week(int y, int m, int d) /* 0-6 ==> Sun-Sat */ +{ + static int t[] = {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4}; + y -= m < 3; + return (y + y/4 - y/100 + y/400 + t[m-1] + d) % 7; +} + +/* + * Note: the TOD should store the current GMT + */ + +int m48_tod_set(int year, /* 1980-2079 */ + int month, /* 01-12 */ + int day, /* 01-31 */ + int hour, /* 00-23 */ + int minute, /* 00-59 */ + int second) /* 00-59 */ + +{ + SYS_TOD_UNPROTECT(); + + M48_ADDR[CONTROL] |= 0x80; /* Set WRITE bit */ + + M48_ADDR[YEAR] = to_bcd(year % 100); + M48_ADDR[MONTH] = to_bcd(month); + M48_ADDR[DAY] = to_bcd(day); + M48_ADDR[DAY_OF_WEEK] = day_of_week(year, month, day) + 1; + M48_ADDR[HOUR] = to_bcd(hour); + M48_ADDR[MINUTE] = to_bcd(minute); + M48_ADDR[SECOND] = to_bcd(second); + + M48_ADDR[CONTROL] &= ~0x80; /* Clear WRITE bit */ + + SYS_TOD_PROTECT(); + + return 0; +} + +/* + * Note: the TOD should store the current GMT + */ + +int m48_tod_get(int *year, /* 1980-2079 */ + int *month, /* 01-12 */ + int *day, /* 01-31 */ + int *hour, /* 00-23 */ + int *minute, /* 00-59 */ + int *second) /* 00-59 */ +{ + int y; + + SYS_TOD_UNPROTECT(); + + M48_ADDR[CONTROL] |= 0x40; /* Set READ bit */ + + y = from_bcd(M48_ADDR[YEAR]); + *year = y < 80 ? 2000 + y : 1900 + y; + *month = from_bcd(M48_ADDR[MONTH]); + *day = from_bcd(M48_ADDR[DAY]); + /* day_of_week = M48_ADDR[DAY_OF_WEEK] & 0xf; */ + *hour = from_bcd(M48_ADDR[HOUR]); + *minute = from_bcd(M48_ADDR[MINUTE]); + *second = from_bcd(M48_ADDR[SECOND] & 0x7f); + + M48_ADDR[CONTROL] &= ~0x40; /* Clear READ bit */ + + SYS_TOD_PROTECT(); + + return 0; +} + +int m48_tod_get_second(void) +{ + return from_bcd(M48_ADDR[SECOND] & 0x7f); +} + +/* + * Watchdog function + * + * If usec is 0, the watchdog timer is disarmed. + * + * If usec is non-zero, the watchdog timer is armed (or re-armed) for + * approximately usec microseconds (if the exact requested usec is + * not supported by the chip, the next higher available value is used). + * + * Minimum watchdog timeout = 62500 usec + * Maximum watchdog timeout = 124 sec (124000000 usec) + */ + +void m48_watchdog_arm(int usec) +{ + int mpy, res; + + SYS_TOD_UNPROTECT(); + + if (usec == 0) { + res = 0; + mpy = 0; + } else if (usec < 2000000) { /* Resolution: 1/16s if below 2s */ + res = 0; + mpy = (usec + 62499) / 62500; + } else if (usec < 8000000) { /* Resolution: 1/4s if below 8s */ + res = 1; + mpy = (usec + 249999) / 250000; + } else if (usec < 32000000) { /* Resolution: 1s if below 32s */ + res = 2; + mpy = (usec + 999999) / 1000000; + } else { /* Resolution: 4s up to 124s */ + res = 3; + mpy = (usec + 3999999) / 4000000; + if (mpy > 31) + mpy = 31; + } + + M48_ADDR[WATCH] = (0x80 | /* Steer to RST signal (IRQ = N/C) */ + mpy << 2 | + res); + + SYS_TOD_PROTECT(); +} + +/* + * U-Boot RTC support. + */ +void +rtc_get( struct rtc_time *tmp ) +{ + m48_tod_get(&tmp->tm_year, + &tmp->tm_mon, + &tmp->tm_mday, + &tmp->tm_hour, + &tmp->tm_min, + &tmp->tm_sec); + tmp->tm_yday = 0; + tmp->tm_isdst= 0; + +#ifdef RTC_DEBUG + printf( "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 ); +#endif +} + +void +rtc_set( struct rtc_time *tmp ) +{ + m48_tod_set(tmp->tm_year, /* 1980-2079 */ + tmp->tm_mon, /* 01-12 */ + tmp->tm_mday, /* 01-31 */ + tmp->tm_hour, /* 00-23 */ + tmp->tm_min, /* 00-59 */ + tmp->tm_sec); /* 00-59 */ + +#ifdef RTC_DEBUG + printf( "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); +#endif + +} + +void +rtc_reset (void) +{ + m48_tod_init(); +} + |