config.h.orig

bootloader源代码

/*****************************************
 Copyright (c) 2001-2002  
 Sigma Designs, Inc. All Rights Reserved
 Proprietary and Confidential
 *****************************************/

/* This file is part of the Jasper DVD boot loader */

#ifndef __JASPERBOOT_CONFIG_H
#define __JASPERBOOT_CONFIG_H

#include "version.h"

// Configuration file for the bootloader
// the only configuration for the speed that is supported is 162MHz.
// any other configuration of a higher speed you use at your own risk

// PLL Register values
#define PLLREG_MULT		58 
#define PLLREG_DIV		3
#define CPU_CLK_162MHZ	1

/*
#define PLLREG_MULT		43
#define PLLREG_DIV		1
#define CPU_CLK_202MHZ	1
*/
/*
#define PLLREG_MULT		44 
#define PLLREG_DIV		1
#define CPU_CLK_207MHZ	1
*/

#define PLLREG_VALUE ((PLLREG_DIV<<8)+(PLLREG_MULT<<2)+2)
// *** NOTE: the max. value for mult is 63
// CPU speed = 27Mhz*(mult+2)/((div+2)*2)
// eg: Mult=53, Div=3 CPU = 148.5 Mhz
//     Mult=35, Div=3 CPU = 99.9 Mhz
#define CPU_CLK_SPEED ((27000000*(PLLREG_MULT+2))/((PLLREG_DIV+2)*2))

// ***********************************************************
// for EM85xx revision B - these values must be pre-calculated
// for the audio sampling frequency to be programmed correctly
// the formula used is:
//
// SamplingFrequency = (CPU_clock/2) * M / (2 * (M + N) * 256)
//
// where M = one of EM8xxx_AudioPLL_M_xxxx
//       N = onr of EM8xxx_AudioPLL_N_xxxx
//
#ifdef CPU_CLK_162MHZ
// here are the values for PLLREG_MULT=58, PLLREG_DIV=3
// so CPU_clock = 162Mhz
#define  EM8xxx_AudioPLL_N_8000  	9613
#define  EM8xxx_AudioPLL_M_8000  	512
#define  EM8xxx_AudioPLL_N_11025 	47097
#define  EM8xxx_AudioPLL_M_11025 	3528
#define  EM8xxx_AudioPLL_N_12000 	9357
#define  EM8xxx_AudioPLL_M_12000	768

#define  EM8xxx_AudioPLL_N_16000 	18202
#define  EM8xxx_AudioPLL_M_16000 	2048
#define  EM8xxx_AudioPLL_N_22050 	43569
#define  EM8xxx_AudioPLL_M_22050 	7056
#define  EM8xxx_AudioPLL_N_24000 	8589
#define  EM8xxx_AudioPLL_M_24000 	1536

#define  EM8xxx_AudioPLL_N_32000 	8077
#define  EM8xxx_AudioPLL_M_32000 	2048
#define  EM8xxx_AudioPLL_N_44100	4057
#define  EM8xxx_AudioPLL_M_44100 	1568
#define  EM8xxx_AudioPLL_N_48000	2351 
#define  EM8xxx_AudioPLL_M_48000	1024 

#define  EM8xxx_AudioPLL_N_64000 	6029
#define  EM8xxx_AudioPLL_M_64000	4096
#define  EM8xxx_AudioPLL_N_88200 	22401
#define  EM8xxx_AudioPLL_M_88200 	28224
#define  EM8xxx_AudioPLL_N_96000 	3981
#define  EM8xxx_AudioPLL_M_96000 	6144 

#endif

#ifdef CPU_CLK_202MHZ
// here are the values for PLLREG_MULT=43, PLLREG_DIV=1
// so CPU_clock = 202.5Mhz
#define  EM8xxx_AudioPLL_N_8000  	48577
#define  EM8xxx_AudioPLL_M_8000  	2048
#define  EM8xxx_AudioPLL_N_11025 	26557
#define  EM8xxx_AudioPLL_M_11025 	1568
#define  EM8xxx_AudioPLL_N_12000 	47553
#define  EM8xxx_AudioPLL_M_12000	3072
#define  EM8xxx_AudioPLL_N_16000 	46529
#define  EM8xxx_AudioPLL_M_16000 	4096
#define  EM8xxx_AudioPLL_N_22050 	24989
#define  EM8xxx_AudioPLL_M_22050 	3136
#define  EM8xxx_AudioPLL_N_24000 	44481
#define  EM8xxx_AudioPLL_M_24000	6144 	

#define  EM8xxx_AudioPLL_N_32000 	42433
#define  EM8xxx_AudioPLL_M_32000 	8192
#define  EM8xxx_AudioPLL_N_44100	21853
#define  EM8xxx_AudioPLL_M_44100 	6272
#define  EM8xxx_AudioPLL_N_48000	38337 
#define  EM8xxx_AudioPLL_M_48000	12288	 

#define  EM8xxx_AudioPLL_N_64000 	34241
#define  EM8xxx_AudioPLL_M_64000	16384
#define  EM8xxx_AudioPLL_N_88200 	15581
#define  EM8xxx_AudioPLL_M_88200 	12544
#define  EM8xxx_AudioPLL_N_96000 	26049
#define  EM8xxx_AudioPLL_M_96000	24576 	 

#endif

#ifdef CPU_CLK_207MHZ
// here are the values for PLLREG_MULT=44, PLLREG_DIV=1
// so CPU_clock = 207Mhz
#define  EM8xxx_AudioPLL_N_8000  	24851
#define  EM8xxx_AudioPLL_M_8000  	1024
#define  EM8xxx_AudioPLL_N_11025 	40773
#define  EM8xxx_AudioPLL_M_11025 	2352
#define  EM8xxx_AudioPLL_N_12000 	24339
#define  EM8xxx_AudioPLL_M_12000	1536 

#define  EM8xxx_AudioPLL_N_16000 	23827
#define  EM8xxx_AudioPLL_M_16000 	2048
#define  EM8xxx_AudioPLL_N_22050 	38421
#define  EM8xxx_AudioPLL_M_22050 	4704
#define  EM8xxx_AudioPLL_N_24000 	22803
#define  EM8xxx_AudioPLL_M_24000 	3072

#define  EM8xxx_AudioPLL_N_32000 	21779
#define  EM8xxx_AudioPLL_M_32000 	4096
#define  EM8xxx_AudioPLL_N_44100	33717
#define  EM8xxx_AudioPLL_M_44100 	9408
#define  EM8xxx_AudioPLL_N_48000	19731 
#define  EM8xxx_AudioPLL_M_48000	6144 

#define  EM8xxx_AudioPLL_N_64000 	17683
#define  EM8xxx_AudioPLL_M_64000	8192
#define  EM8xxx_AudioPLL_N_88200 	24309
#define  EM8xxx_AudioPLL_M_88200 	18816
#define  EM8xxx_AudioPLL_N_96000 	13587
#define  EM8xxx_AudioPLL_M_96000 	12288
#endif

// Map of Flash
#define BOOT_START_ADDRESS	 0x00000000
#define BOOT_END_ADDRESS	 0x00006000
#define ROMFS_START_ADDRESS  0x00006000
#define ROM_END_ADDRESS		 0x00400000

// Addresses of stage1 bootloader (aka main.bin) image:
// Address of stage1 in FLASH
#define STAGE1_IMAGE_START   0x0200 
#define STAGE1_IMAGE_END     0xffff
// Address odf stage1 in SDRAM
#define STAGE1_LOAD_ADDRESS  0x01300000
#define STAGE1_START_ADDRESS 0x01300000

// Address where to laod the kernel
#define KERNEL_LOAD_ADDRESS  0x01008000

//Size of the boot loader stack
#define STACK_SIZE  0x80000

#define KERNEL_FILENAME "linux.bin"
#define GZ_KERNEL_FILENAME "linux.bin.gz"
// (Un)Comment (un)wanted option here

// Enable booting from a gz kernel in flash
#define SUPPORT_GZ_KERNEL_IN_ROMFS

// Enable Booting for bootable CD
#define SUPPORT_BOOT_FROM_CD

// Enable Booting from network
#define SUPPORT_NETWORK

// Enable flash support
#define SUPPORT_FLASH
#define FLASH_BASE_ADDRESS	0x0

// Address for downloading image
#define DOWNLOAD_BOOTLOADER_ADDRESS		0x013e0000
#define DOWNLOAD_BOOTLOADER_MAX			0x00020000
#define DOWNLOAD_ROMFS_ADDRESS			0x01400000
#define DOWNLOAD_ROMFS_MAX				0x00400000

// Platform ID for El torito boot CD - checked
#define ELTORITO_PLATFORM_ID_EM85xx 85
#define ELTORITO_PLATFORM_ID_EM86xx 86
// undef this to avoid checking
// #undef ELTORITO_PLATFORM_ID_EM85xx
#define ELTORITO_PLATFORM_ID ELTORITO_PLATFORM_ID_EM85xx

// ID String for El torito boot CD - checked
// undef this to avoid checking
#undef ELTORITO_ID_STRING
//#define ELTORITO_ID_STRING "SIGMA DESIGNS"

// Max length of the ID string
// Dont change - specificied by El Torito
#define ELTORITO_ID_STRING_MAX_LENGTH 24

// Enable uart debug output during boot
#define ENABLE_UART

// Enable IRQ handler
#define ENABLE_IRQHANDLER

// Comment to disable any cache in bootloader
#define ENABLE_CACHE
// Comment to disable data cache only
#define ENABLE_CACHE_DATA
// Comment to not use writeback mode
#define ENABLE_CACHE_DATA_WRITEBACK

// Uncomment to use external clock for serial port
// #define SERIAL_CLOCK_EXT 

// Uncomment this to enable some hacks for Quickturn emulation
// See source code for detail. You'll probably also need SERIAL_CLOCK_EXT
// #define QUICKTURN

// Bootloader tests
//#define BOOT_TESTS
//#define QUASAR_DRAM_TEST 

// user can execute some commands under boot loader
#define SUPPORT_BOOT_MENU

// 
// configuration adjustment
// 

#ifdef CONFIG_RELEASE
#define SUPPORT_BOOT_FROM_CD
#undef SUPPORT_NETWORK
#undef SUPPORT_FLASH
#undef SUPPORT_BOOT_MENU
#endif	// CONFIG_RELEASE

#ifdef CONFIG_DEVEL
#undef SUPPORT_BOOT_FROM_CD
#define SUPPORT_NETWORK
#define SUPPORT_FLASH
#define SUPPORT_BOOT_MENU

#undef BOOT_END_ADDRESS
#define BOOT_END_ADDRESS	 0x00010000
#undef ROMFS_START_ADDRESS
#define ROMFS_START_ADDRESS  0x00010000
#endif	// CONFIG_DEVEL

#endif