diff options
Diffstat (limited to 'include/configs')
| -rw-r--r-- | include/configs/FPS850L.h | 55 |
1 files changed, 44 insertions, 11 deletions
diff --git a/include/configs/FPS850L.h b/include/configs/FPS850L.h index 89a4d43..0dd21bc 100644 --- a/include/configs/FPS850L.h +++ b/include/configs/FPS850L.h @@ -121,11 +121,7 @@ */ #define CFG_SDRAM_BASE 0x00000000 #define CFG_FLASH_BASE 0x40000000 -#ifdef DEBUG #define CFG_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */ -#else -#define CFG_MONITOR_LEN (128 << 10) /* Reserve 128 kB for Monitor */ -#endif #define CFG_MONITOR_BASE CFG_FLASH_BASE #define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */ @@ -135,11 +131,12 @@ * the maximum mapped by the Linux kernel during initialization. */ #define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */ + /*----------------------------------------------------------------------- * FLASH organization */ #define CFG_MAX_FLASH_BANKS 2 /* max number of memory banks */ -#define CFG_MAX_FLASH_SECT 67 /* max number of sectors on one chip */ +#define CFG_MAX_FLASH_SECT 71 /* max number of sectors on one chip */ #define CFG_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in ms) */ #define CFG_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */ @@ -148,6 +145,10 @@ #define CFG_ENV_OFFSET 0x8000 /* Offset of Environment Sector */ #define CFG_ENV_SIZE 0x4000 /* Total Size of Environment Sector */ +/* Address and size of Redundant Environment Sector */ +#define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET+CFG_ENV_SIZE) +#define CFG_ENV_SIZE_REDUND (CFG_ENV_SIZE) + /*----------------------------------------------------------------------- * Hardware Information Block */ @@ -260,9 +261,11 @@ #define CFG_REMAP_OR_AM 0x80000000 /* OR addr mask */ #define CFG_PRELIM_OR_AM 0xE0000000 /* OR addr mask */ -/* FLASH timing: ACS = 11, TRLX = 0, CSNT = 1, SCY = 5, EHTR = 1 */ -#define CFG_OR_TIMING_FLASH (OR_CSNT_SAM | OR_ACS_DIV2 | OR_BI | \ - OR_SCY_5_CLK | OR_EHTR) +/* + * FLASH timing: + */ +#define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \ + OR_SCY_3_CLK | OR_EHTR | OR_BI) #define CFG_OR0_REMAP (CFG_REMAP_OR_AM | CFG_OR_TIMING_FLASH) #define CFG_OR0_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH) @@ -291,12 +294,42 @@ /* * Memory Periodic Timer Prescaler + * + * The Divider for PTA (refresh timer) configuration is based on an + * example SDRAM configuration (64 MBit, one bank). The adjustment to + * the number of chip selects (NCS) and the actually needed refresh + * rate is done by setting MPTPR. + * + * PTA is calculated from + * PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS) + * + * gclk CPU clock (not bus clock!) + * Trefresh Refresh cycle * 4 (four word bursts used) + * + * 4096 Rows from SDRAM example configuration + * 1000 factor s -> ms + * 32 PTP (pre-divider from MPTPR) from SDRAM example configuration + * 4 Number of refresh cycles per period + * 64 Refresh cycle in ms per number of rows + * -------------------------------------------- + * Divider = 4096 * 32 * 1000 / (4 * 64) = 512000 + * + * 50 MHz => 50.000.000 / Divider = 98 + * 66 Mhz => 66.000.000 / Divider = 129 + * 80 Mhz => 80.000.000 / Divider = 156 */ -/* periodic timer for refresh */ -#define CFG_MAMR_PTA 97 /* start with divider for 100 MHz */ +#define CFG_PTA_PER_CLK ((4096 * 32 * 1000) / (4 * 64)) +#define CFG_MAMR_PTA 98 -/* refresh rate 15.6 us (= 64 ms / 4K = 62.4 / quad bursts) for <= 128 MBit */ +/* + * For 16 MBit, refresh rates could be 31.3 us + * (= 64 ms / 2K = 125 / quad bursts). + * For a simpler initialization, 15.6 us is used instead. + * + * #define CFG_MPTPR_2BK_2K MPTPR_PTP_DIV32 for 2 banks + * #define CFG_MPTPR_1BK_2K MPTPR_PTP_DIV64 for 1 bank + */ #define CFG_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */ #define CFG_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */ |