Subversion Repositories openrisc_2011-10-31

#ifndef _MC_INIT_2_H_

#define _MC_INIT_2_H_

/* clock period in [ns] */

#define SYS_CLK_PERIOD    (1000000000/IN_CLK)

/* FLASH timings: worst cases in ns, from data sheets */

#  define FLASH_WA_TIME   150 /* write access*/

#  define FLASH_WE_DELAY  30  /* write enable*/

#  define FLASH_WH_TIME   0   /* write hold */

#  define FLASH_RA_TIME   150 /* read access*/

#  define FLASH_PRA_TIME  25  /* page read access time */

#  define FLASH_RT_TIME   35  /* read turnaround time */

/* SDRAM timings: worst cases in ns, from data sheets */

#  define SDRAM_tRCD      23

#  define SDRAM_tWR       20

#  define SDRAM_tRC       60

#  define SDRAM_tRFC      60 /* sometimes the same as tRC */

#  define SDRAM_tRAS      50 /* use the worst case minimal value */

#  define SDRAM_tRP       23

#  define SDRAM_tRRD      15

#  define SDRAM_tREF      ((64000000/8192)+1)

#  define FLASH_BAR_VAL   FLASH_BASE_ADDR

#  define FLASH_AMR_VAL   (~(FLASH_SIZE-1))     /* address mask register */

#  define SDRAM_BASE_ADDR 0x00000000

#  define SDRAM_SIZE      0x02000000

#  define SDRAM_BAR_VAL   SDRAM_BASE_ADDR

#  define SDRAM_AMR_VAL   (~(SDRAM_SIZE-1))

/* independant from flash properties, always 0 ;)   */

#  define FLASH_OE_DELAY  0              /* output enable */

#  define FLASH_OE_VAL    ((FLASH_OE_DELAY+(SYS_CLK_PERIOD-1))/SYS_CLK_PERIOD)

// define FLASH_WTR_VAL   0x00011009 /* write timings */

#  define FLASH_WTR_VAL   ((0x000003ff & ((FLASH_WA_TIME-1) /SYS_CLK_PERIOD)) | \

                           (0x0000f000 & ((FLASH_WE_DELAY-1)/SYS_CLK_PERIOD)) | \

                           (0x001f0000 & ((FLASH_WH_TIME)   /SYS_CLK_PERIOD)))

// define FLASH_RTR_VAL   0x01002009 /* read timings */

#  define FLASH_RTR_VAL   ((0x000003ff & ((FLASH_RA_TIME-1) /SYS_CLK_PERIOD)) | \

                           (0x0000f000 &  (FLASH_OE_VAL                    )) | \

                           (0x001f0000 & ((FLASH_PRA_TIME-1)/SYS_CLK_PERIOD)) | \

                           (0x1f000000 & ((FLASH_RT_TIME-1  /SYS_CLK_PERIOD))))

/* round this value down:

 * if it's 30 / 10 -> we want 2, so it's ok, 31 / 10 -> we want 3

 *

 * define SDRAM_RCDR_VAL  0x00000002

 */

#  define SDRAM_RCDR_VAL  ((SDRAM_tRCD-1)/SYS_CLK_PERIOD)

// prviously undefined

#  define SDRAM_WRTR_VAL  ((SDRAM_tWR+(SYS_CLK_PERIOD-1)/SYS_CLK_PERIOD)-2)

#  if SDRAM_WRTR_VAL<0

#    undef  SDRAM_WRTR_VAL

#    define SDRAM_WRTR_VAL 0

#  endif

// define SDRAM_RCTR_VAL  0x00000006

#  define SDRAM_RCTR_VAL  ((SDRAM_tRC+(SYS_CLK_PERIOD-1)/SYS_CLK_PERIOD)-2)

#  if SDRAM_RCTR_VAL<0

#    undef  SDRAM_RCTR_VAL

#    define SDRAM_RCTR_VAL 0

#  endif

// define SDRAM_REFCTR_VAL 0x00000006

#  define SDRAM_REFCTR_VAL ((SDRAM_tRFC+(SYS_CLK_PERIOD-1)/SYS_CLK_PERIOD)-2)

#  if SDRAM_REFCTR_VAL<0

#    undef  SDRAM_REFCTR_VAL

#    define SDRAM_REFCTR_VAL 0

#  endif

// define SDRAM_RATR_VAL  0x00000006

#  define SDRAM_RATR_VAL  ((SDRAM_tRAS+(SYS_CLK_PERIOD-1)/SYS_CLK_PERIOD)-2)

#  if SDRAM_RATR_VAL<0

#    undef  SDRAM_RATR_VAL

#    define SDRAM_RATR_VAL 0

#  endif

// define SDRAM_PTR_VAL   0x00000001

#  define SDRAM_PTR_VAL   (((SDRAM_tRP+(SYS_CLK_PERIOD-1))/SYS_CLK_PERIOD)-2)

#  if SDRAM_PTR_VAL<0

#    undef  SDRAM_PTR_VAL

#    define SDRAM_PTR_VAL 0

#  endif

// define SDRAM_RRDR_VAL  0x00000000

#  define SDRAM_RRDR_VAL  (((SDRAM_tRRD+(SYS_CLK_PERIOD-1))/SYS_CLK_PERIOD)-2)

#  if SDRAM_RRDR_VAL<0

#    undef  SDRAM_RRDR_VAL

#    define SDRAM_RRDR_VAL 0

#  endif

/*

 * we don't want to go to the edge with refresh delays

 * define SDRAM_RIR_VAL   0x00000300

 */

#  define SDRAM_RIR_VAL   ((SDRAM_tREF/SYS_CLK_PERIOD)-((SDRAM_tREF/SYS_CLK_PERIOD)+10)/10)

#  define MC_BAR_0        (0x00)

#  define MC_AMR_0        (0x04)

#  define MC_BAR_1        (0x08)

#  define MC_AMR_1        (0x0c)

#  define MC_BAR_2        (0x10)

#  define MC_AMR_2        (0x14)

#  define MC_BAR_3        (0x18)

#  define MC_AMR_3        (0x1c)

#  define MC_CCR_0        (0x20)

#  define MC_CCR_1        (0x24)

#  define MC_CCR_2        (0x28)

#  define MC_CCR_3        (0x2c)

#  define MC_WTR_0        (0x30)

#  define MC_RTR_0        (0x34)

#  define MC_WTR_1        (0x38)

#  define MC_RTR_1        (0x3c)

#  define MC_WTR_2        (0x40)

#  define MC_RTR_2        (0x44)

#  define MC_WTR_3        (0x48)

#  define MC_RTR_3        (0x4c)

#  define MC_BAR_4        (0x80)

#  define MC_AMR_4        (0x84)

#  define MC_BAR_5        (0x88)

#  define MC_AMR_5        (0x8c)

#  define MC_BAR_6        (0x90)

#  define MC_AMR_6        (0x94)

#  define MC_BAR_7        (0x98)

#  define MC_AMR_7        (0x9c)

#  define MC_CCR_4        (0xa0)

#  define MC_CCR_5        (0xa4)

#  define MC_CCR_6        (0xa8)

#  define MC_CCR_7        (0xac)

#  define MC_RATR         (0xb0)  /* row active time register  */

#  define MC_RCTR         (0xb4)

#  define MC_RRDR         (0xb8)

#  define MC_PTR          (0xbc)

#  define MC_WRTR         (0xc0)

#  define MC_REFCTR       (0xc4)

#  define MC_RCDR         (0xc8)

#  define MC_RIR          (0xcc)

#  define MC_SMBOR        (0xe0)

#  define MC_ORR          (0xe4)

#  define MC_OSR          (0xe8)

#  define MC_PCR          (0xec)

#  define MC_IIR          (0xf0)

/* POC register field definition */

#  define MC_POC_EN_BW_OFFSET             0

#  define MC_POC_EN_BW_WIDTH              2

#  define MC_POC_EN_MEMTYPE_OFFSET        2

#  define MC_POC_EN_MEMTYPE_WIDTH         2

/* CSC register field definition */

#  define MC_CSC_EN_OFFSET                0

#  define MC_CSC_MEMTYPE_OFFSET           1

#  define MC_CSC_MEMTYPE_WIDTH            2

#  define MC_CSC_BW_OFFSET                4

#  define MC_CSC_BW_WIDTH                 2

#  define MC_CSC_MS_OFFSET                6

#  define MC_CSC_MS_WIDTH                 2

#  define MC_CSC_WP_OFFSET                8

#  define MC_CSC_BAS_OFFSET               9

#  define MC_CSC_KRO_OFFSET               10

#  define MC_CSC_PEN_OFFSET               11

#  define MC_CSC_SEL_OFFSET               16

#  define MC_CSC_SEL_WIDTH                8

#  define MC_CSC_MEMTYPE_SDRAM            0

#  define MC_CSC_MEMTYPE_SSRAM            1

#  define MC_CSC_MEMTYPE_ASYNC            2

#  define MC_CSC_MEMTYPE_SYNC             3

#  define MC_CSR_VALID                    0xFF000703LU

#  define MC_POC_VALID                    0x0000000FLU

#  define MC_BA_MASK_VALID                0x000003FFLU

#  define MC_CSC_VALID                    0x00FF0FFFLU

#  define MC_TMS_SDRAM_VALID              0x0FFF83FFLU

#  define MC_TMS_SSRAM_VALID              0x00000000LU

#  define MC_TMS_ASYNC_VALID              0x03FFFFFFLU

#  define MC_TMS_SYNC_VALID               0x01FFFFFFLU

#  define MC_TMS_VALID                    0xFFFFFFFFLU /* reg test compat. */

/* TMS register field definition SDRAM */

#  define MC_TMS_SDRAM_TRFC_OFFSET        24

#  define MC_TMS_SDRAM_TRFC_WIDTH         4

#  define MC_TMS_SDRAM_TRP_OFFSET         20

#  define MC_TMS_SDRAM_TRP_WIDTH          4

#  define MC_TMS_SDRAM_TRCD_OFFSET        17

#  define MC_TMS_SDRAM_TRCD_WIDTH         4

#  define MC_TMS_SDRAM_TWR_OFFSET         15

#  define MC_TMS_SDRAM_TWR_WIDTH          2

#  define MC_TMS_SDRAM_WBL_OFFSET         9

#  define MC_TMS_SDRAM_OM_OFFSET          7

#  define MC_TMS_SDRAM_OM_WIDTH           2

#  define MC_TMS_SDRAM_CL_OFFSET          4

#  define MC_TMS_SDRAM_CL_WIDTH           3

#  define MC_TMS_SDRAM_BT_OFFSET          3

#  define MC_TMS_SDRAM_BL_OFFSET          0

#  define MC_TMS_SDRAM_BL_WIDTH           3

/* TMS register field definition ASYNC */

#  define MC_TMS_ASYNC_TWWD_OFFSET        20

#  define MC_TMS_ASYNC_TWWD_WIDTH         6

#  define MC_TMS_ASYNC_TWD_OFFSET         16

#  define MC_TMS_ASYNC_TWD_WIDTH          4

#  define MC_TMS_ASYNC_TWPW_OFFSET        12

#  define MC_TMS_ASYNC_TWPW_WIDTH         4

#  define MC_TMS_ASYNC_TRDZ_OFFSET        8

#  define MC_TMS_ASYNC_TRDZ_WIDTH         4

#  define MC_TMS_ASYNC_TRDV_OFFSET        0

#  define MC_TMS_ASYNC_TRDV_WIDTH         8

/* TMS register field definition SYNC  */

#  define MC_TMS_SYNC_TTO_OFFSET          16

#  define MC_TMS_SYNC_TTO_WIDTH           9

#  define MC_TMS_SYNC_TWR_OFFSET          12

#  define MC_TMS_SYNC_TWR_WIDTH           4

#  define MC_TMS_SYNC_TRDZ_OFFSET         8

#  define MC_TMS_SYNC_TRDZ_WIDTH          4

#  define MC_TMS_SYNC_TRDV_OFFSET         0

#  define MC_TMS_SYNC_TRDV_WIDTH          8

#endif /* _MC_INIT_2_H_ */