mirror of
git://projects.qi-hardware.com/xburst-tools.git
synced 2024-11-01 14:14:38 +02:00
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/*
|
|
* jz4740_board.h
|
|
*
|
|
* JZ4740 board definitions.
|
|
*
|
|
* Copyright (c) 2005-2008 Ingenic Semiconductor Inc.
|
|
*
|
|
*/
|
|
#ifndef __JZ4740_BOARD_H__
|
|
#define __JZ4740_BOARD_H__
|
|
|
|
/*-------------------------------------------------------------------
|
|
* NAND Boot config code
|
|
*/
|
|
#define JZ4740_NANDBOOT_CFG JZ4740_NANDBOOT_B8R3 /* NAND Boot config code */
|
|
|
|
/*-------------------------------------------------------------------
|
|
* Frequency of the external OSC in Hz.
|
|
*/
|
|
#define CFG_EXTAL 12000000
|
|
|
|
/*-------------------------------------------------------------------
|
|
* CPU speed.
|
|
*/
|
|
#define CFG_CPU_SPEED 336000000
|
|
|
|
/*-------------------------------------------------------------------
|
|
* Serial console.
|
|
*/
|
|
#define CFG_UART_BASE UART0_BASE
|
|
|
|
#define CONFIG_BAUDRATE 57600
|
|
|
|
/*-------------------------------------------------------------------
|
|
* SDRAM info.
|
|
*/
|
|
|
|
// SDRAM paramters
|
|
#define CFG_SDRAM_BW16 0 /* Data bus width: 0-32bit, 1-16bit */
|
|
#define CFG_SDRAM_BANK4 1 /* Banks each chip: 0-2bank, 1-4bank */
|
|
#define CFG_SDRAM_ROW 13 /* Row address: 11 to 13 */
|
|
#define CFG_SDRAM_COL 9 /* Column address: 8 to 12 */
|
|
#define CFG_SDRAM_CASL 2 /* CAS latency: 2 or 3 */
|
|
|
|
// SDRAM Timings, unit: ns
|
|
#define CFG_SDRAM_TRAS 45 /* RAS# Active Time */
|
|
#define CFG_SDRAM_RCD 20 /* RAS# to CAS# Delay */
|
|
#define CFG_SDRAM_TPC 20 /* RAS# Precharge Time */
|
|
#define CFG_SDRAM_TRWL 7 /* Write Latency Time */
|
|
#define CFG_SDRAM_TREF 7812 /* Refresh period: 8192 refresh cycles/64ms */
|
|
|
|
/*-------------------------------------------------------------------
|
|
* Linux kernel command line.
|
|
*/
|
|
#define CFG_CMDLINE "mem=32M console=ttyS0,57600n8 ip=off rootfstype=yaffs2 root=/dev/mtdblock2 rw init=/etc/inittab"
|
|
|
|
#endif /* __JZ4740_BOARD_H__ */
|