platform.h

来自「Ibmstb02500 miniboot 源码」· C头文件 代码 · 共 193 行

/* openbios/arch/pallas/lamar/platform.h, stb-bios */
/*-----------------------------------------------------------------------------+
|
|	This source code has been made available to you	by IBM on an AS-IS
|	basis.	Anyone receiving this source is	licensed under IBM
|	copyrights to use it in	any way	he or she deems	fit, including
|	copying	it, modifying it, compiling it,	and redistributing it either
|	with or	without	modifications.	No license under IBM patents or
|	patent applications is to be implied by	the copyright license.
|
|	Any user of this software should understand that IBM cannot provide
|	technical support for this software and	will not be responsible	for
|	any consequences resulting from	the use	of this	software.
|
|	Any person who transfers this source code or any derivative work
|	must include the IBM copyright notice, this paragraph, and the
|	preceding two paragraphs in the	transferred software.
|
|	COPYRIGHT   I B	M   CORPORATION	1995
|	LICENSED MATERIAL  -  PROGRAM PROPERTY OF I B M
+-----------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------+
|
|  File	Name:	platform.h
|
|  Function:	STB BIOS architecture depdendent settings for Lamar.
|
|  Author:	Yudong Yang
|
|  Change Activity-
|
|  Date	       Description of Change					   BY
|  ---------   ---------------------					   ---
|  30-Dec-01   Created							   YYD
|  15-Mar-02   Config for Lamar						   YYD
|  21-Jun-02   Increased stack size and	enabled	dynamic	.bss+.data size	   YYD
|
+-----------------------------------------------------------------------------*/

/*-----------------------------------------------------------------------------+
| Defines for common addresses for RAM
+-----------------------------------------------------------------------------*/
// please note that initbrd.s may need to be changed too
#define	RAM_BANK_0	  0x00000000
#define	RAM_BANK_1	  0xA0000000

// Lamar uses Pallas 2
#define	RAM_BANK_0_SIZE	  0x04000000  // Lamar has 64MB	RAM in bank 0
#define	RAM_BANK_1_SIZE	  0x04000000  // Lamar has 64MB	RAM in bank 1

/*-----------------------------------------------------------------------------+
| Defines for common addresses for FLASH
+-----------------------------------------------------------------------------*/
// please select the correct flash config for your board
#define	AMD_FLASH_2X4M	// 2 x	Am29lv320db
// #define AMD_FLASH_4X4M  // 4	x  Am29lv320db
// #define AMD_FLASH_2X2M  // 2	x  Am29lv160db
// #define AMD_FLASH_4X2M  // 4	x  Am29lv160db

// The size of flash memory
#ifdef AMD_FLASH_2X4M

#define	FLASH_START	   0x7F800000	 // start address of flash memory
#define	FLASH_DEV_SIZE	   0x00400000	 // size of each flash device
#define	FLASH_TOTAL_SIZE   0x00800000	 // total size of flash	memory
#define	FLASH_ADDR_MASK	   0x7fffffff	 // flash device address mask
#define	FLASH_NUM_DEVS	   2		 // number of devices
#define	FLASH_DEV_STRING   0x22f9   // AM29LV320DB


#elif defined(AMD_FLASH_4X4M)

#define	FLASH_START	   0x7F000000	 // start address of flash memory
#define	FLASH_DEV_SIZE	   0x00400000	 // size of each flash device
#define	FLASH_TOTAL_SIZE   0x01000000	 // total size of flash	memory
#define	FLASH_ADDR_MASK	   0x7fffffff	 // flash device address mask
#define	FLASH_NUM_DEVS	   4		 // number of devices
#define	FLASH_DEV_STRING   0x22f9   // AM29LV320DB

#elif defined(AMD_FLASH_2X2M)

#define	FLASH_START	   0x7FC00000	 // start address of flash memory
#define	FLASH_DEV_SIZE	   0x00200000	 // size of each flash device
#define	FLASH_TOTAL_SIZE   0x00400000	 // total size of flash	memory
#define	FLASH_ADDR_MASK	   0x7fffffff	 // flash device address mask
#define	FLASH_NUM_DEVS	   2		 // number of devices
#define	FLASH_DEV_STRING   0x2249   // AM29LV160DB

#elif defined(AMD_FLASH_4X2M)

#define	FLASH_START	   0x7F800000	 // start address of flash memory
#define	FLASH_DEV_SIZE	   0x00200000	 // size of each flash device
#define	FLASH_TOTAL_SIZE   0x00800000	 // total size of flash	memory
#define	FLASH_ADDR_MASK	   0x7fffffff	 // flash device address mask
#define	FLASH_NUM_DEVS	   4		 // number of devices
#define	FLASH_DEV_STRING   0x2249   // AM29LV160DB

#else

   #error "Flash device	config is not selected\n"

#endif

/*-----------------------------------------------------------------------------+
| Defines for common addresses for BIOS
+-----------------------------------------------------------------------------*/

// STB-BIOS Memory Map:
// RAM_BANK_1
//   .data	// the address is also specified in root/mapfile2 and root/mapfile.gnu
//   .sdata
//   .bss
//   .sbss
//   C Runtime Stack
//   Interrupt Service Stack
//   Flash Update Code in RAM
//   Flash Update Buffer
//   Available RAM
//   VIDEO_RAM_ADDRESS	 if BOOTLOGO is	enabled
// In Flash ROM
// BIOS_START
//   .text     // the address is also specified	in root/mapfile2 and root/mapfile.gnu
//   .rodata

#define	BIOS_START		0xfffe0000	 // the	start address of BIOS .text segment
    // should be exactly the same as specified in mapfile2 / mapfile.gnu.  (STB-BIOS root dir)
#define	BIOS_SIZE		0x00020000   //	128K BIOS AREA	    Please make	sure this is the correct one

#define	BIOS_DATA_ADDR	       RAM_BANK_1    //	BIOS_DATA now start at this point
#define	BIOS_STACK_SIZE		0x10000	     //	C runtime Stack	size
#define	BIOS_INT_STACK_SIZE	0x2000	     //	interrupt handler Stack	size

#ifndef	 __ASSEMBLER__	    // defined for assembler preprocessor

extern unsigned	int BIOS_DATA_SIZE;	 // data + bss segment size, rounded to	4K boundary
#define	BIOS_FLASH_CODE_SIZE	0x1000	// size	of flash code which is needed to be placed in memory
#define	BIOS_FLASH_CODE_ADDR	(RAM_BANK_1 + BIOS_STACK_SIZE +	BIOS_INT_STACK_SIZE + BIOS_DATA_SIZE)
#define	BIOS_FLASH_BUFFER_SIZE	0x10000	// 64kB	buffer for writing flash
#define	BIOS_FLASH_BUFFER_ADDR	(BIOS_FLASH_CODE_ADDR +	BIOS_FLASH_CODE_SIZE)
#define	RAM_ADDRESS		(BIOS_FLASH_BUFFER_ADDR	+ BIOS_FLASH_BUFFER_SIZE)  // free unused memory address

#endif	 // __ASSEMBLER__


/*-----------------------------------------------------------------------------+
| Flash	address	of the BIOS config data	area (resides in FLASH ROM).
+-----------------------------------------------------------------------------*/
#define	BIOS_CONFIG_START   (0xffc00000)  // make room for MHP
#define	BIOS_CONFIG_SIZE    (0x00010000)  // 64K config	data
#define	BIOS_MANAGED_FLASH_SIZE	(0x400000)  // 4M Bytes

/*-----------------------------------------------------------------------------+
| Flash	address	of the BIOS VPD	config data area (resides in FLASH ROM).
+-----------------------------------------------------------------------------*/
#define	VPD_ADDR	BIOS_CONFIG_START  // VPD data area
#define	VPD_SIZE	(0x1000)	   // VPD data area size

/*-----------------------------------------------------------------------------+
| Flash	address	of the "NVRAM" data area (resides in FLASH ROM).
+-----------------------------------------------------------------------------*/
#define	NVRAM_START	(VPD_ADDR + VPD_SIZE)
#define	NVRAM_SIZE	(0x1000)

/*-----------------------------------------------------------------------------+
| Flash	address	of the BOOTLOGO	data area (resides in FLASH ROM).
+-----------------------------------------------------------------------------*/
#define	BOOTLOGO_FLASH_START (NVRAM_START + NVRAM_SIZE)
#define	BOOTLOGO_FLASH_SIZE  (BIOS_CONFIG_SIZE - NVRAM_SIZE - VPD_SIZE)

// The flash memory region can be used by boot image
#define	IMAGE_FLASH_OFFSET	 BIOS_CONFIG_SIZE   // leave starting 64k for misc use
#define	IMAGE_FLASH_MAX		 (BIOS_MANAGED_FLASH_SIZE - (BIOS_SIZE + IMAGE_FLASH_OFFSET)) // 0x003d0000
#define	IMAGE_FLASH_START	 (BIOS_CONFIG_START + IMAGE_FLASH_OFFSET | 0x80000000)

/*-----------------------------------------------------------------------------+
| Defines for common addresses for BOOT	Image
+-----------------------------------------------------------------------------*/
#define	ENTRY_PT_MIN		 0x0000A000  //	the minimal entry point	location of boot image


/*-----------------------------------------------------------------------------+
| Defines for addresses	of BOOTLOGO video buffer
+-----------------------------------------------------------------------------*/
#define	VIDEO_RAM_ADDRESS  (RAM_BANK_1 + 8*1024*1024)	// RAM_BANK1 + 8 MByte



// Ethernet interrupt
#define	ENET_INT	EXI_I3


#define	PLATFORM_SUPPORT_VERSION  "1.05	(Feb/10/2003)"