146 lines
5.6 KiB
C
146 lines
5.6 KiB
C
/*
|
|
* General-Purpose Memory Controller for OMAP2
|
|
*
|
|
* Copyright (C) 2005-2006 Nokia Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef __OMAP2_GPMC_H
|
|
#define __OMAP2_GPMC_H
|
|
|
|
/* Maximum Number of Chip Selects */
|
|
#define GPMC_CS_NUM 8
|
|
|
|
#define GPMC_CS_CONFIG1 0x00
|
|
#define GPMC_CS_CONFIG2 0x04
|
|
#define GPMC_CS_CONFIG3 0x08
|
|
#define GPMC_CS_CONFIG4 0x0c
|
|
#define GPMC_CS_CONFIG5 0x10
|
|
#define GPMC_CS_CONFIG6 0x14
|
|
#define GPMC_CS_CONFIG7 0x18
|
|
#define GPMC_CS_NAND_COMMAND 0x1c
|
|
#define GPMC_CS_NAND_ADDRESS 0x20
|
|
#define GPMC_CS_NAND_DATA 0x24
|
|
|
|
/* Control Commands */
|
|
#define GPMC_CONFIG_RDY_BSY 0x00000001
|
|
#define GPMC_CONFIG_DEV_SIZE 0x00000002
|
|
#define GPMC_CONFIG_DEV_TYPE 0x00000003
|
|
#define GPMC_SET_IRQ_STATUS 0x00000004
|
|
#define GPMC_CONFIG_WP 0x00000005
|
|
|
|
#define GPMC_GET_IRQ_STATUS 0x00000006
|
|
#define GPMC_PREFETCH_FIFO_CNT 0x00000007 /* bytes available in FIFO for r/w */
|
|
#define GPMC_PREFETCH_COUNT 0x00000008 /* remaining bytes to be read/write*/
|
|
#define GPMC_STATUS_BUFFER 0x00000009 /* 1: buffer is available to write */
|
|
|
|
#define GPMC_NAND_COMMAND 0x0000000a
|
|
#define GPMC_NAND_ADDRESS 0x0000000b
|
|
#define GPMC_NAND_DATA 0x0000000c
|
|
|
|
/* ECC commands */
|
|
#define GPMC_ECC_READ 0 /* Reset Hardware ECC for read */
|
|
#define GPMC_ECC_WRITE 1 /* Reset Hardware ECC for write */
|
|
#define GPMC_ECC_READSYN 2 /* Reset before syndrom is read back */
|
|
|
|
#define GPMC_CONFIG1_WRAPBURST_SUPP (1 << 31)
|
|
#define GPMC_CONFIG1_READMULTIPLE_SUPP (1 << 30)
|
|
#define GPMC_CONFIG1_READTYPE_ASYNC (0 << 29)
|
|
#define GPMC_CONFIG1_READTYPE_SYNC (1 << 29)
|
|
#define GPMC_CONFIG1_WRITEMULTIPLE_SUPP (1 << 28)
|
|
#define GPMC_CONFIG1_WRITETYPE_ASYNC (0 << 27)
|
|
#define GPMC_CONFIG1_WRITETYPE_SYNC (1 << 27)
|
|
#define GPMC_CONFIG1_CLKACTIVATIONTIME(val) ((val & 3) << 25)
|
|
#define GPMC_CONFIG1_PAGE_LEN(val) ((val & 3) << 23)
|
|
#define GPMC_CONFIG1_WAIT_READ_MON (1 << 22)
|
|
#define GPMC_CONFIG1_WAIT_WRITE_MON (1 << 21)
|
|
#define GPMC_CONFIG1_WAIT_MON_IIME(val) ((val & 3) << 18)
|
|
#define GPMC_CONFIG1_WAIT_PIN_SEL(val) ((val & 3) << 16)
|
|
#define GPMC_CONFIG1_DEVICESIZE(val) ((val & 3) << 12)
|
|
#define GPMC_CONFIG1_DEVICESIZE_16 GPMC_CONFIG1_DEVICESIZE(1)
|
|
#define GPMC_CONFIG1_DEVICETYPE(val) ((val & 3) << 10)
|
|
#define GPMC_CONFIG1_DEVICETYPE_NOR GPMC_CONFIG1_DEVICETYPE(0)
|
|
#define GPMC_CONFIG1_MUXADDDATA (1 << 9)
|
|
#define GPMC_CONFIG1_TIME_PARA_GRAN (1 << 4)
|
|
#define GPMC_CONFIG1_FCLK_DIV(val) (val & 3)
|
|
#define GPMC_CONFIG1_FCLK_DIV2 (GPMC_CONFIG1_FCLK_DIV(1))
|
|
#define GPMC_CONFIG1_FCLK_DIV3 (GPMC_CONFIG1_FCLK_DIV(2))
|
|
#define GPMC_CONFIG1_FCLK_DIV4 (GPMC_CONFIG1_FCLK_DIV(3))
|
|
#define GPMC_CONFIG7_CSVALID (1 << 6)
|
|
|
|
#define GPMC_DEVICETYPE_NOR 0
|
|
#define GPMC_DEVICETYPE_NAND 2
|
|
#define GPMC_CONFIG_WRITEPROTECT 0x00000010
|
|
#define GPMC_STATUS_BUFF_EMPTY 0x00000001
|
|
#define WR_RD_PIN_MONITORING 0x00600000
|
|
#define GPMC_PREFETCH_STATUS_FIFO_CNT(val) ((val >> 24) & 0x7F)
|
|
#define GPMC_PREFETCH_STATUS_COUNT(val) (val & 0x00003fff)
|
|
|
|
/*
|
|
* Note that all values in this struct are in nanoseconds, while
|
|
* the register values are in gpmc_fck cycles.
|
|
*/
|
|
struct gpmc_timings {
|
|
/* Minimum clock period for synchronous mode */
|
|
u16 sync_clk;
|
|
|
|
/* Chip-select signal timings corresponding to GPMC_CS_CONFIG2 */
|
|
u16 cs_on; /* Assertion time */
|
|
u16 cs_rd_off; /* Read deassertion time */
|
|
u16 cs_wr_off; /* Write deassertion time */
|
|
|
|
/* ADV signal timings corresponding to GPMC_CONFIG3 */
|
|
u16 adv_on; /* Assertion time */
|
|
u16 adv_rd_off; /* Read deassertion time */
|
|
u16 adv_wr_off; /* Write deassertion time */
|
|
|
|
/* WE signals timings corresponding to GPMC_CONFIG4 */
|
|
u16 we_on; /* WE assertion time */
|
|
u16 we_off; /* WE deassertion time */
|
|
|
|
/* OE signals timings corresponding to GPMC_CONFIG4 */
|
|
u16 oe_on; /* OE assertion time */
|
|
u16 oe_off; /* OE deassertion time */
|
|
|
|
/* Access time and cycle time timings corresponding to GPMC_CONFIG5 */
|
|
u16 page_burst_access; /* Multiple access word delay */
|
|
u16 access; /* Start-cycle to first data valid delay */
|
|
u16 rd_cycle; /* Total read cycle time */
|
|
u16 wr_cycle; /* Total write cycle time */
|
|
|
|
/* The following are only on OMAP3430 */
|
|
u16 wr_access; /* WRACCESSTIME */
|
|
u16 wr_data_mux_bus; /* WRDATAONADMUXBUS */
|
|
};
|
|
|
|
extern unsigned int gpmc_ns_to_ticks(unsigned int time_ns);
|
|
extern unsigned int gpmc_ticks_to_ns(unsigned int ticks);
|
|
extern unsigned int gpmc_round_ns_to_ticks(unsigned int time_ns);
|
|
extern unsigned long gpmc_get_fclk_period(void);
|
|
|
|
extern void gpmc_cs_write_reg(int cs, int idx, u32 val);
|
|
extern u32 gpmc_cs_read_reg(int cs, int idx);
|
|
extern int gpmc_cs_calc_divider(int cs, unsigned int sync_clk);
|
|
extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t);
|
|
extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base);
|
|
extern void gpmc_cs_free(int cs);
|
|
extern int gpmc_cs_set_reserved(int cs, int reserved);
|
|
extern int gpmc_cs_reserved(int cs);
|
|
extern int gpmc_prefetch_enable(int cs, int dma_mode,
|
|
unsigned int u32_count, int is_write);
|
|
extern int gpmc_prefetch_reset(int cs);
|
|
extern void omap3_gpmc_save_context(void);
|
|
extern void omap3_gpmc_restore_context(void);
|
|
extern void gpmc_init(void);
|
|
extern int gpmc_read_status(int cmd);
|
|
extern int gpmc_cs_configure(int cs, int cmd, int wval);
|
|
extern int gpmc_nand_read(int cs, int cmd);
|
|
extern int gpmc_nand_write(int cs, int cmd, int wval);
|
|
|
|
int gpmc_enable_hwecc(int cs, int mode, int dev_width, int ecc_size);
|
|
int gpmc_calculate_ecc(int cs, const u_char *dat, u_char *ecc_code);
|
|
#endif
|