[U-Boot] new board SDRAM conf

Tue Nov 4 11:23:16 CET 2008

Hi Stefan.
I solved SDRAM problems for your help, when I use CFG_DRAM_TEST , it passed

My bdi2000's configuration  is blows
WDCR	0x10	0x00000020	;Select SDRAM0_CFG0
WDCR	0x11	0x34000000	;CFG0: 32bit, PMU disable
WDCR	0x11	0x84000000	;CFG1: enable SDRA

When I Use BID2000, accessing  SDRAM with Verify, mm command, It works fine .
 I think SDRAM0_CFG first is CFG0, and second is CFG1.

But in board/amcc/mft.c I used  marked code, It's confused me. 
Long int sdram_init()
{

	//mtsdram (mem_cfg0, 0x34000000); /* confused me */
	//mtsdram (mem_cfg1, 0x84000000);
	mtsdram (mem_cfg1, 0x34000000);/* it works fine */
	mtsdram (mem_cfg0, 0x84000000);
}

I have another problem. 
 cpu/ppc4XX/start.S -> trab_init function has exception error blows LOG MESSAGE. 
When I debug trap_init , use blr code it succefully returned. 
maybe you can point me to the right direction.

trap_init:
	lwz	r7, GOT(_start_of_vectors)
	lwz	r8, GOT(_end_of_vectors)

	li	r9, 0x100		/* reset vector always at 0x100 */

	cmplw	0, r7, r8
	bgelr				/* return if r7>=r8 - just in case */

	mflr	r4			/* save link register		*/
1:
	lwz	r0, 0(r7)
	stw	r0, 0(r9)
	addi	r7, r7, 4
	addi	r9, r9, 4
	cmplw	0, r7, r8
	bne	1b

 /*  blr  (in this use blr it works Steven) */

Best Regards.
Steven.

______________________________LOG MESSAGE_____________________________________________________ 
U-Boot 1.3.3 (Nov  4 2008 - 18:19:01)

CPU:   AMCC PowerPC 440EP Rev. C at 333.333 MHz (PLB=133, OPB=66, EBC=33 MHz)
       Bootstrap Option E - Boot ROM Location EBC (16 bits)
       Internal PCI arbiter enabled, PCI async ext clock used
       32 kB I-Cache 32 kB D-Cache
Board: MFT(Multi Function Tester) - AMCC PPC440EP Evaluation Board
I2C:   ready
DTT:   1 FAILED INIT
DRAM:  128 MB
[init_func_ram]K9 board_add_ram leave
[board_init_f]enter
[board_init_f:465]
[board_init_f:468]
Top of RAM usable for U-Boot at: 08000000
Reserving 593k for U-Boot at: 07f6b000
Reserving 136k for malloc() at: 07f49000
Reserving 144 Bytes for Board Info at: 07f48f70
Reserving 56 Bytes for Global Data at: 07f48f38
Stack Pointer at: 07f48f18
[board.c:639]
New Stack Pointer is: 07f48f18
[board_init_f:657]addr_sp:0x7f48f18, id:0x7f48f38, addr:0x7f6b000
[board_init_r:679]enter
Now running in RAM - U-Boot at: 07f6b000
[board_init_r:706]before watchdog_reset
[board_init_r:709]after watchdog
[board_init_r:772]
[board_init_r:790]
Bus Fault @ 0x07f6d7c0, fixup 0x00000000
Machine Check Exception.
Caused by (from msr): regs 07f48df8 Data Read PLB Error
Data Write PLB Error
Machine Check exception is imprecise
NIP: 07F6D7C0 XER: 00000000 LR: 07F6D7C0 REGS: 07f48df8 TRAP: 0200 DEAR: CE3EFACB
MSR: 00021000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00

GPR00: 07F6D358 07F48EE8 07F48F38 07F6B000 07F6E6F8 00000001 00000001 07F6D7C0 
GPR08: 00000600 00002098 01FCA055 00000000 07F48CF8 27000800 07FB2100 07FEB000 
GPR16: 10010000 06110000 00A94200 00638800 24009000 CB010000 00000000 FFFB3B8C 
GPR24: FFFB2A30 07F48F38 07F6B000 07F6B000 07F9EB8C 07F9DA20 07FB21B4 07F48F70 
Call backtrace: 
07F6E6F0 07F6D734 
machine check

__________________________________________________________________________________________

Include/configs/mft.h
/*-----------------------------------------------------------------------
 * High Level Configuration Options
 *----------------------------------------------------------------------*/
#define CONFIG_440EP		1	    /* Specifc EP support	*/
#define CONFIG_440		1	    /* ... PPC440 family	*/
#define CONFIG_4xx		1	    /* ... PPC4xx family	*/
#define CONFIG_BOARD_EARLY_INIT_F 1	    /* Call board_early_init_f	*/
#define CONFIG_MISC_INIT_R	1	    /* Call misc_init_r		*/
#define CONFIG_SYS_CLK_FREQ	66666666    /* external freq to pll	*/

/*-----------------------------------------------------------------------
 * Base addresses -- Note these are effective addresses where the
 * actual resources get mapped (not physical addresses)
 *----------------------------------------------------------------------*/
#define CFG_SDRAM_BASE	    0x00000000	    /* _must_ be 0		*
#define CFG_FLASH_BASE	    	0xfc000000	    /* start of FLASH		*/
#define CFG_MONITOR_BASE	TEXT_BASE	
//#define CFG_MONITOR_BASE	(-CFG_MONITOR_LEN)
#define CFG_PCI_MEMBASE	    	0xa0000000	    /* mapped pci memory	*/
#define CFG_PCI_MEMBASE1        CFG_PCI_MEMBASE  + 0x10000000
#define CFG_PCI_MEMBASE2        CFG_PCI_MEMBASE1 + 0x10000000
#define CFG_PCI_MEMBASE3        CFG_PCI_MEMBASE2 + 0x10000000
#define CFG_PERIPHERAL_BASE 	0xef600000	    /* internal peripherals	*/
#define CFG_PCI_BASE	    	0xe0000000	    /* internal PCI regs	*/

#define CFG_USB_DEVICE          0x50000000
#define CFG_NVRAM_BASE_ADDR     0x80000000
#define CFG_BCSR_BASE	        (CFG_NVRAM_BASE_ADDR | 0x2000)
#define CFG_BOOT_BASE_ADDR      0xf0000000
/*-----------------------------------------------------------------------
 * Initial RAM & stack pointer (placed in internal SRAM)
 *----------------------------------------------------------------------*/
#define CFG_INIT_RAM_DCACHE	1		/* d-cache as init ram	*/
#define CFG_INIT_RAM_ADDR	0x70000000  /* Initial RAM address	*/
#define CFG_ISRAM_BASE	 	CFG_INIT_RAM_ADDR	    /* internal SRAM		*/
#define CFG_INIT_RAM_END	(4 << 10)	    /* End of used area in RAM	*/
#define CFG_GBL_DATA_SIZE	256	    /* num bytes initial data	*/

#define CFG_GBL_DATA_OFFSET	(CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
#define CFG_INIT_SP_OFFSET	CFG_GBL_DATA_OFFSET

#define CFG_MONITOR_LEN		(256 * 1024)	/* Reserve 256 kB for Mon*/
#define CFG_MALLOC_LEN		(128 * 1024)	/* Reserve 128 kB for malloc*/

/*-----------------------------------------------------------------------
 * DDR SDRAM
 *----------------------------------------------------------------------*/
#undef CONFIG_SPD_EEPROM		/* Don't use SPD EEPROM for setup	*/
//#define CONFIG_SDRAM_BANK0	1	/* init onboard DDR SDRAM bank 0*/
//#define	CFG_SDRAM0_TR0		0x410A4012
#undef CONFIG_SDRAM_ECC		/* enable ECC support		*/

#if 1 // for sdram test 
#define CFG_DRAM_TEST
#define CFG_KBYTES_SDRAM        (128 * 1024)
#endif