[U-Boot-Users] MAPPING MEMORY

[Marco_Ivano <debugs3c@gmail.com>]

Hi all,
i have a board based on s3c2410 processor with k9f2808uoc samsung
flash (128 Mbit) and 2 banks of samsung ram code k4s283233f in total
(128 Mbitx2). I try to modify the source code of board SMDK2410 but i
have same problems:

1 the memory map is in the file /include/configs/smdk2410 (i have use
readme file for all operation) but i don't understud the means of some
variables that i report in the code below. In particular i don't means
what rappresents the PHYS_SDRAM and PHYS_FLASH and PHYS_FLASH_SIZE.

2 I have do some modify in this source code : i have insert 2 banks of
sdram but i don't know how modify the value of the PHYS variable.

3 How can i setting the size of flash page ?

4 How can i know the compatibility my flash with other flash?

Thanks
Marco

/*-----------------------------------------------------------------------
 * Physical Memory Map
 */
#define CONFIG_NR_DRAM_BANKS	2	   /* we have 1 bank of DRAM */
#define PHYS_SDRAM_1		0x30000000 /* SDRAM Bank #1 */
#define PHYS_SDRAM_1_SIZE	0x02000000 /* 16 MB */
#define PHYS_SDRAM_2		0x30000000 /* SDRAM Bank #2 */
#define PHYS_SDRAM_2_SIZE	0x02000000 /* 16 MB */

#define PHYS_FLASH_1		0x00000000 /* Flash Bank #1 */

#define CFG_FLASH_BASE		PHYS_FLASH_1

/*-----------------------------------------------------------------------
 * FLASH and environment organization
 */

#define CONFIG_AMD_LV400	1	/* uncomment this if you have a LV400 flash */
#if 0
#define CONFIG_AMD_LV800	1	/* uncomment this if you have a LV800 flash */
#endif

#define CFG_MAX_FLASH_BANKS	1	/* max number of memory banks */
#ifdef CONFIG_AMD_LV800
#define PHYS_FLASH_SIZE		0x00100000 /* 1MB */
#define CFG_MAX_FLASH_SECT	(19)	/* max number of sectors on one chip */
#define CFG_ENV_ADDR		(CFG_FLASH_BASE + 0x0F0000) /* addr of environment */
#endif
#ifdef CONFIG_AMD_LV400
#define PHYS_FLASH_SIZE		0x00080000 /* 512KB */
#define CFG_MAX_FLASH_SECT	(11)	/* max number of sectors on one chip */
#define CFG_ENV_ADDR		(CFG_FLASH_BASE + 0x070000) /* addr of environment */
#endif

/* timeout values are in ticks */
#define CFG_FLASH_ERASE_TOUT	(5*CFG_HZ) /* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT	(5*CFG_HZ) /* Timeout for Flash Write */

#define	CFG_ENV_IS_IN_FLASH	1
#define CFG_ENV_SIZE		0x10000	/* Total Size of Environment Sector */

#endif	/* __CONFIG_H */