mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 19:26:16 +09:00
a55d48174c
MIPS port has two problems in timer routines. One is now we assume CFG_HZ equals to CP0 counter frequency, but this is wrong. CFG_HZ has to be 1000 in the U-Boot system. The other is we don't have a proper time management counter like timestamp other ARCHs have. We need the 32-bit millisecond clock counter. This patch introduces timestamp and CYCLES_PER_JIFFY. timestamp is a 32-bit non-overflowing CFG_HZ counter, and CYCLES_PER_JIFFY is the number of calculated CP0 counter cycles in a CFG_HZ. STRATEGY: * Fix improper CFG_HZ value to have 1000 * Use CFG_MIPS_TIMER_FREQ for timer counter frequency, instead. * timer_init: initialize timestamp and set up the first timer expiration. Note that we don't need to initialize CP0 count/compare registers here as they have been already zeroed out on the system reset. Leave them as they are. * get_timer: calculate how many timestamps have been passed, then return base-relative timestamp. Make sure we can easily count missed timestamps regardless of CP0 count/compare value. * get_ticks: return the current timestamp, that is get_timer(0). Most parts are from good old Linux v2.6.16 kernel. v2: - Remove FIXME comments as they turned out to be trivial. - Use CP0 compare register as a global variable for expirelo. - Kill a global variable 'cycles_per_jiffy'. Use #define CYCLES_PER_JIFFY instead. Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
194 lines
5.7 KiB
C
194 lines
5.7 KiB
C
/*
|
|
* (C) Copyright 2003
|
|
* Masami Komiya <mkomiya@sonare.it>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* Config header file for TANBAC TB0229 board using an VR4131 CPU module
|
|
*/
|
|
|
|
#ifndef __CONFIG_H
|
|
#define __CONFIG_H
|
|
|
|
#define CONFIG_MIPS32 1 /* MIPS 4Kc CPU core */
|
|
#define CONFIG_TB0229 1 /* on a TB0229 Board */
|
|
|
|
#ifndef CPU_CLOCK_RATE
|
|
#define CPU_CLOCK_RATE 200000000 /* 200 MHz clock for the MIPS core */
|
|
#endif
|
|
#define CPU_TCLOCK_RATE 16588800 /* 16.5888 MHz for TClock */
|
|
|
|
#define CONFIG_CONS_INDEX 1
|
|
#define CONFIG_BOOTDELAY 5 /* autoboot after 5 seconds */
|
|
|
|
#define CONFIG_BAUDRATE 115200
|
|
|
|
#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
|
|
|
|
#define CONFIG_TIMESTAMP /* Print image info with timestamp */
|
|
|
|
#define CONFIG_PREBOOT "echo;" \
|
|
"echo Type \\\"boot\\\" for the network boot using DHCP, TFTP and NFS;" \
|
|
"echo Type \\\"run netboot_initrd\\\" for the network boot with initrd;" \
|
|
"echo Type \\\"run flash_nfs\\\" to mount root filesystem over NFS;" \
|
|
"echo Type \\\"run flash_local\\\" to mount local root filesystem;" \
|
|
"echo"
|
|
|
|
#undef CONFIG_BOOTARGS
|
|
|
|
#define CONFIG_EXTRA_ENV_SETTINGS \
|
|
"netboot=dhcp;tftp;run netargs; bootm\0" \
|
|
"nfsargs=setenv bootargs root=/dev/nfs ip=dhcp\0" \
|
|
"localargs=setenv bootargs root=1F02 ip=dhcp\0" \
|
|
"addmisc=setenv bootargs ${bootargs} " \
|
|
"console=ttyS0,${baudrate} " \
|
|
"read-only=readonly\0" \
|
|
"netargs=run nfsargs addmisc\0" \
|
|
"flash_nfs=run nfsargs addmisc;" \
|
|
"bootm ${kernel_addr}\0" \
|
|
"flash_local=run localargs addmisc;" \
|
|
"bootm ${kernel_addr}\0" \
|
|
"netboot_initrd=dhcp;tftp;tftp 80600000 initrd;" \
|
|
"setenv bootargs root=/dev/ram ramdisk_size=8192 ip=dhcp;"\
|
|
"run addmisc;" \
|
|
"bootm 80400000 80600000\0" \
|
|
"rootpath=/export/miniroot-mipsel\0" \
|
|
"autoload=no\0" \
|
|
"kernel_addr=BFC60000\0" \
|
|
"ramdisk_addr=B0100000\0" \
|
|
"u-boot=u-boot.bin\0" \
|
|
"bootfile=uImage\0" \
|
|
"load=dhcp;tftp 80400000 ${u-boot}\0" \
|
|
"load_kernel=dhcp;tftp 80400000 ${bootfile}\0" \
|
|
"update_uboot=run load;" \
|
|
"protect off BFC00000 BFC3FFFF;" \
|
|
"erase BFC00000 BFC3FFFF;" \
|
|
"cp.b 80400000 BFC00000 ${filesize}\0" \
|
|
"update_kernel=run load_kernel;" \
|
|
"erase BFC60000 BFD5FFFF;" \
|
|
"cp.b 80400000 BFC60000 ${filesize}\0" \
|
|
"initenv=erase bfc40000 bfc5ffff\0" \
|
|
""
|
|
/*#define CONFIG_BOOTCOMMAND "run flash_local" */
|
|
#define CONFIG_BOOTCOMMAND "run netboot"
|
|
|
|
|
|
/*
|
|
* BOOTP options
|
|
*/
|
|
#define CONFIG_BOOTP_BOOTFILESIZE
|
|
#define CONFIG_BOOTP_BOOTPATH
|
|
#define CONFIG_BOOTP_GATEWAY
|
|
#define CONFIG_BOOTP_HOSTNAME
|
|
|
|
|
|
/*
|
|
* Command line configuration.
|
|
*/
|
|
#include <config_cmd_default.h>
|
|
|
|
#define CONFIG_CMD_ASKENV
|
|
#define CONFIG_CMD_DHCP
|
|
#define CONFIG_CMD_PING
|
|
#define CONFIG_CMD_PCI
|
|
#define CONFIG_CMD_ELF
|
|
|
|
|
|
/*
|
|
* Miscellaneous configurable options
|
|
*/
|
|
#define CFG_LONGHELP /* undef to save memory */
|
|
#define CFG_PROMPT "# " /* Monitor Command Prompt */
|
|
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
|
|
#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
|
|
#define CFG_MAXARGS 16 /* max number of command args*/
|
|
|
|
#define CFG_MALLOC_LEN 128*1024
|
|
|
|
#define CFG_BOOTPARAMS_LEN 128*1024
|
|
|
|
#define CFG_MIPS_TIMER_FREQ (CPU_TCLOCK_RATE/4)
|
|
|
|
#define CFG_HZ 1000
|
|
|
|
#define CFG_SDRAM_BASE 0x80000000
|
|
|
|
#define CFG_LOAD_ADDR 0x80400000 /* default load address */
|
|
|
|
#define CFG_MEMTEST_START 0x80000000
|
|
#define CFG_MEMTEST_END 0x80800000
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* FLASH and environment organization
|
|
*/
|
|
#define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */
|
|
#define CFG_MAX_FLASH_SECT (128) /* max number of sectors on one chip */
|
|
|
|
#define PHYS_FLASH_1 0xbfc00000 /* Flash Bank #1 */
|
|
|
|
/* The following #defines are needed to get flash environment right */
|
|
#define CFG_MONITOR_BASE TEXT_BASE
|
|
#define CFG_MONITOR_LEN (192 << 10)
|
|
|
|
#define CFG_INIT_SP_OFFSET 0x400000
|
|
|
|
#define CFG_FLASH_BASE PHYS_FLASH_1
|
|
|
|
/* timeout values are in ticks */
|
|
#define CFG_FLASH_ERASE_TOUT (20 * CFG_HZ) /* Timeout for Flash Erase */
|
|
#define CFG_FLASH_WRITE_TOUT (2 * CFG_HZ) /* Timeout for Flash Write */
|
|
|
|
#define CFG_ENV_IS_IN_FLASH 1
|
|
|
|
/* Address and size of Primary Environment Sector */
|
|
#define CFG_ENV_ADDR 0xBFC40000
|
|
#define CFG_ENV_SIZE 0x20000
|
|
|
|
#define CFG_DIRECT_FLASH_TFTP
|
|
|
|
#define CONFIG_NR_DRAM_BANKS 1
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Cache Configuration
|
|
*/
|
|
#define CFG_DCACHE_SIZE 16384
|
|
#define CFG_ICACHE_SIZE 16384
|
|
#define CFG_CACHELINE_SIZE 16
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Serial Configuration
|
|
*/
|
|
#define CFG_NS16550
|
|
#define CFG_NS16550_SERIAL
|
|
#define CFG_NS16550_REG_SIZE 1
|
|
#define CFG_NS16550_CLK 18432000
|
|
#define CFG_NS16550_COM1 0xaf000800
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* PCI stuff
|
|
*/
|
|
#define CONFIG_PCI
|
|
#define CONFIG_PCI_PNP
|
|
#define CONFIG_NET_MULTI
|
|
#define CONFIG_EEPRO100
|
|
#define CFG_RX_ETH_BUFFER 8 /* use 8 rx buffer on eepro100 */
|
|
|
|
#define CONFIG_RTL8139
|
|
|
|
#endif /* __CONFIG_H */
|