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Diffstat (limited to 'include/at91rm9200_mem.h')
| -rw-r--r-- | include/at91rm9200_mem.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/include/at91rm9200_mem.h b/include/at91rm9200_mem.h new file mode 100644 index 0000000000..fafb18f6e8 --- /dev/null +++ b/include/at91rm9200_mem.h @@ -0,0 +1,115 @@ +/* + * AT91RM9200 Memory Controller definitions + * + * Copyright (c) 2002 by Cogent Computer Systems + * Written by Mike Kelly <mike@cogcomp.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ +#ifndef AT91RM9200_MEM_H +#define AT91RM9200_MEM_H + +/********************************************************************** + * External Bus Interface Unit + **********************************************************************/ +#define EBI_CSA 0x00 /* Chip Select Assignment Register */ +#define EBI_CFGR 0x04 /* Configuration Register */ + +/* Bit Defines */ +/* EBI_CSA - Chip Select Assignment Register */ +#define EBI_CSA_CS4_CF BIT4 /* 1 = CS4-6 are assigned to Compact Flash, 0 = Chip Selects */ +#define EBI_CSA_CS3_SMM BIT3 /* 1 = CS3 is assigned to SmartMedia, 0 = Chip Select */ +#define EBI_CSA_CS1_SDRAM BIT1 /* 1 = CS1 is assigned to SDRAM, 0 = Chip Select */ +#define EBI_CSA_CS0_BF BIT0 /* 1 = CS0 is assigned to Burst Flash, 0 = Chip Select */ + +/* EBI_CFGR - Configuration Register */ +#define EBI_CFGR_DBPU BIT0 /* 1 = Disable D0-15 pullups */ + +/*************************************************************************** + * Static Memory Interface Unit + ***************************************************************************/ +#define SMC_CSR0 0x00 /* Chip Select Register 0 */ +#define SMC_CSR1 0x04 /* Chip Select Register 1 */ +#define SMC_CSR2 0x08 /* Chip Select Register 2 */ +#define SMC_CSR3 0x0C /* Chip Select Register 3 */ +#define SMC_CSR4 0x10 /* Chip Select Register 4 */ +#define SMC_CSR5 0x14 /* Chip Select Register 5 */ +#define SMC_CSR6 0x18 /* Chip Select Register 6 */ +#define SMC_CSR7 0x1C /* Chip Select Register 7 */ + +/* Bit Defines */ +/* SMC_CSR0 -7 - Chip Selects 0 - 7 Register */ +#define SMC_CSR_RWHOLD(_x_) ((_x_ & 0x3) << 28) /* Hold CS after R/W strobes */ +#define SMC_CSR_RWSETUP(_x_) ((_x_ & 0x3) << 24) /* Setup CS before R/W strobes */ +#define SMC_CSR_ACSS_0 (0 << 16) /* Setup/Hold Address 0 clocks before/after CS */ +#define SMC_CSR_ACSS_1 (1 << 16) /* Setup/Hold Address 1 clock before/after CS */ +#define SMC_CSR_ACSS_2 (2 << 16) /* Setup/Hold Address 2 clocks before/after CS */ +#define SMC_CSR_ACSS_3 (3 << 16) /* Setup/Hold Address 3 clocks before/after CS */ +#define SMC_CSR_DRP_NORMAL 0 /* 0 = normal read protocol */ +#define SMC_CSR_DRP_EARLY BIT15 /* 1 = early read protocol */ +#define SMC_CSR_DBW_16 (1 << 13) /* CS DataBus Width = 16-Bits */ +#define SMC_CSR_DBW_8 (2 << 13) /* CS DataBus Width = 8 Bits */ +#define SMC_CSR_BAT_16_1 0 /* Single 16-Bit device (when DBW is 16) */ +#define SMC_CSR_BAT_16_2 BIT12 /* Dual 8-Bit devices (when DBW is 16) */ +#define SMC_CSR_TDF(_x_) ((_x_ & 0xf) << 8) /* Intercycle Data Float Time */ +#define SMC_CSR_WSEN BIT7 /* 1 = wait states are enabled */ +#define SMC_CSR_NWS(_x_) ((_x_ & 0x7f) << 0) /* Wait States + 1 */ + +/* ***************************************************************************** */ +/* SDRAM Memory Interface Unit */ +/* ***************************************************************************** */ +#define SDRC_MR 0x00 /* Mode Register */ +#define SDRC_TR 0x04 /* Refresh Timer Register */ +#define SDRC_CR 0x08 /* Configuration Register */ +#define SDRC_SRR 0x0C /* Self Refresh Register */ +#define SDRC_LPR 0x10 /* Low Power Register */ +#define SDRC_IER 0x14 /* Interrupt Enable Register */ +#define SDRC_IDR 0x18 /* Interrupt Disable Register */ +#define SDRC_IMR 0x1C /* Interrupt Mask Register */ +#define SDRC_ISR 0x20 /* Interrupt Status Register */ + +/* Bit Defines */ +/* SDRC_MR - Mode Register */ +#define SDRC_MR_DBW_16 BIT4 /* 1 = SDRAM is 16-bits wide, 0 = 32-bits */ +#define SDRC_MR_NORM (0 << 0) /* Normal Mode - All accesses to SDRAM are decoded normally */ +#define SDRC_MR_NOP (1 << 0) /* NOP Command is sent to SDRAM */ +#define SDRC_MR_PRE (2 << 0) /* Precharge All Command is sent to SDRAM */ +#define SDRC_MR_MRS (3 << 0) /* Mode Register Set Command is sent to SDRAM */ +#define SDRC_MR_REF (4 << 0) /* Refresh Command is sent to SDRAM */ + +/* SDRC_TR - Refresh Timer Register */ +#define SDRC_TR_COUNT(_x_) ((_x_ & 0xfff) << 0) + +/* SDRC_CR - Configuration Register */ +#define SDRC_CR_TXSR(_x_) ((_x_ & 0xf) << 27) /* CKE to ACT Time */ +#define SDRC_CR_TRAS(_x_) ((_x_ & 0xf) << 23) /* ACT to PRE Time */ +#define SDRC_CR_TRCD(_x_) ((_x_ & 0xf) << 19) /* RAS to CAS Time */ +#define SDRC_CR_TRP(_x_) ((_x_ & 0xf) << 15) /* PRE to ACT Time */ +#define SDRC_CR_TRC(_x_) ((_x_ & 0xf) << 11) /* REF to ACT Time */ +#define SDRC_CR_TWR(_x_) ((_x_ & 0xf) << 7) /* Write Recovery Time */ +#define SDRC_CR_CAS_2 (2 << 5) /* Cas Delay = 2, this is the only supported value */ +#define SDRC_CR_NB_2 0 /* 2 Banks per device */ +#define SDRC_CR_NB_4 BIT4 /* 4 Banks per device */ +#define SDRC_CR_NR_11 (0 << 2) /* Number of rows = 11 */ +#define SDRC_CR_NR_12 (1 << 2) /* Number of rows = 12 */ +#define SDRC_CR_NR_13 (2 << 2) /* Number of rows = 13 */ +#define SDRC_CR_NC_8 (0 << 0) /* Number of columns = 8 */ +#define SDRC_CR_NC_9 (1 << 0) /* Number of columns = 9 */ +#define SDRC_CR_NC_10 (2 << 0) /* Number of columns = 10 */ +#define SDRC_CR_NC_11 (3 << 0) /* Number of columns = 11 */ + +/* SDRC_SRR - Self Refresh Register */ +#define SDRC_SRR_SRCB BIT0 /* 1 = Enter Self Refresh */ + +/* SDRC_LPR - Low Power Register */ +#define SDRC_LPR_LPCB BIT0 /* 1 = De-assert CKE between accesses */ + +/* SDRC_IER - Interrupt Enable Register */ +/* SDRC_IDR - Interrupt Disable Register */ +/* SDRC_ISR - Interrupt Mask Register */ +/* SDRC_IMR - Interrupt Mask Register */ +#define SDRC_INT_RES BIT0 /* Refresh Error Status */ + +#endif |