ccm.h

嵌入式试验箱S3C2410的bootloader源代码

 * SYPCR - System Protection Control				11-9
 * SYPCR can only be written once after reset!
 *-----------------------------------------------------------------------
 * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
 */
#if defined(CONFIG_WATCHDOG)
#define CFG_SYPCR	(SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
			 SYPCR_SWE  | SYPCR_SWRI| SYPCR_SWP)
#else
#define CFG_SYPCR	(SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
						  SYPCR_SWP)
#endif

/*-----------------------------------------------------------------------
 * SIUMCR - SIU Module Configuration				11-6
 *-----------------------------------------------------------------------
 * we must activate GPL5 in the SIUMCR for CAN
 */
#define CFG_SIUMCR	(SIUMCR_DBGC11 | SIUMCR_DBPC00 | SIUMCR_MLRC01)

/*-----------------------------------------------------------------------
 * TBSCR - Time Base Status and Control				11-26
 *-----------------------------------------------------------------------
 * Clear Reference Interrupt Status, Timebase freezing enabled
 */
#define CFG_TBSCR	(TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)

/*-----------------------------------------------------------------------
 * RTCSC - Real-Time Clock Status and Control Register		11-27
 *-----------------------------------------------------------------------
 */
#define CFG_RTCSC	(RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)

/*-----------------------------------------------------------------------
 * PISCR - Periodic Interrupt Status and Control		11-31
 *-----------------------------------------------------------------------
 * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
 */
#define CFG_PISCR	(PISCR_PS | PISCR_PITF)

/*-----------------------------------------------------------------------
 * PLPRCR - PLL, Low-Power, and Reset Control Register		15-30
 *-----------------------------------------------------------------------
 * Reset PLL lock status sticky bit, timer expired status bit and timer
 * interrupt status bit
 *
 * If this is a 80 MHz CPU, set PLL multiplication factor to 5 (5*16=80)!
 */
#ifdef	CCM_80MHz	/* for 80 MHz, we use a 16 MHz clock * 5 */
#define CFG_PLPRCR							\
		( (5-1)<<PLPRCR_MF_SHIFT | PLPRCR_TEXPS | PLPRCR_TMIST )
#else			/* up to 50 MHz we use a 1:1 clock */
#define CFG_PLPRCR	(PLPRCR_SPLSS | PLPRCR_TEXPS | PLPRCR_TMIST)
#endif	/* CCM_80MHz */

/*-----------------------------------------------------------------------
 * SCCR - System Clock and reset Control Register		15-27
 *-----------------------------------------------------------------------
 * Set clock output, timebase and RTC source and divider,
 * power management and some other internal clocks
 */
#define SCCR_MASK	SCCR_EBDF11
#ifdef	CCM_80MHz	/* for 80 MHz, we use a 16 MHz clock * 5 */
#define CFG_SCCR	(/* SCCR_TBS  | */ \
			 SCCR_COM00   | SCCR_DFSYNC00 | SCCR_DFBRG00  | \
			 SCCR_DFNL000 | SCCR_DFNH000  | SCCR_DFLCD000 | \
			 SCCR_DFALCD00)
#else			/* up to 50 MHz we use a 1:1 clock */
#define CFG_SCCR	(SCCR_TBS     | \
			 SCCR_COM00   | SCCR_DFSYNC00 | SCCR_DFBRG00  | \
			 SCCR_DFNL000 | SCCR_DFNH000  | SCCR_DFLCD000 | \
			 SCCR_DFALCD00)
#endif	/* CCM_80MHz */

/*-----------------------------------------------------------------------
 *
 * Interrupt Levels
 *-----------------------------------------------------------------------
 */
#define CFG_CPM_INTERRUPT	13	/* SIU_LEVEL6	*/

/*-----------------------------------------------------------------------
 *
 *-----------------------------------------------------------------------
 *
 */
#define CFG_DER	0

/*
 * Init Memory Controller:
 *
 * BR0/1 and OR0/1 (FLASH)
 */

#define FLASH_BASE0_PRELIM	0x40000000	/* FLASH bank #0	*/
#define FLASH_BASE1_PRELIM	0x60000000	/* FLASH bank #0	*/

/* used to re-map FLASH both when starting from SRAM or FLASH:
 * restrict access enough to keep SRAM working (if any)
 * but not too much to meddle with FLASH accesses
 */
#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)

#define CFG_OR0_REMAP	(CFG_REMAP_OR_AM  | CFG_OR_TIMING_FLASH)
#define CFG_OR0_PRELIM	(CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
#define CFG_BR0_PRELIM	((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_V )

#define CFG_OR1_REMAP	CFG_OR0_REMAP
#define CFG_OR1_PRELIM	CFG_OR0_PRELIM
#define CFG_BR1_PRELIM	((FLASH_BASE1_PRELIM & BR_BA_MSK) | BR_V )

/*
 * BR2 and OR2 (SDRAM)
 *
 */
#define SDRAM_BASE2_PRELIM	0x00000000	/* SDRAM bank #0	*/
#define SDRAM_BASE3_PRELIM	0x20000000	/* SDRAM bank #1	*/
#define	SDRAM_MAX_SIZE		0x04000000	/* max 64 MB per bank	*/

/* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't care)	*/
#define CFG_OR_TIMING_SDRAM	0x00000A00

#define CFG_OR2_PRELIM	(CFG_PRELIM_OR_AM | CFG_OR_TIMING_SDRAM )
#define CFG_BR2_PRELIM	((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )

/*
 * BR3 and OR3 (CAN Controller)
 */
#define	CFG_CAN_BASE		0xC0000000	/* CAN mapped at 0xC0000000	*/
#define CFG_CAN_OR_AM		0xFFFF8000	/* 32 kB address mask		*/
#define CFG_OR3_CAN		(CFG_CAN_OR_AM | OR_G5LA | OR_BI)
#define CFG_BR3_CAN		((CFG_CAN_BASE & BR_BA_MSK) | \
					BR_PS_8 | BR_MS_UPMB | BR_V )

/*
 * BR4/OR4: PUMA Config
 *
 * Memory controller will be used in 2 modes:
 *
 * - "read" mode:
 *	BR4: 0x10100801		OR4: 0xffff8520
 * - "load" mode (chip select on UPM B):
 *	BR4: 0x101004c1		OR4: 0xffff8600
 *
 * Default initialization is in "read" mode
 */
#define PUMA_CONF_BASE		0x10100000	/* PUMA Config */
#define PUMA_CONF_OR_AM		0xFFFF8000	/* 32 kB */
#define	PUMA_CONF_LOAD_TIMING	(OR_ACS_DIV2	 | OR_SCY_2_CLK)
#define PUMA_CONF_READ_TIMING	(OR_G5LA | OR_BI | OR_SCY_2_CLK)

#define PUMA_CONF_BR_LOAD	((PUMA_CONF_BASE & BR_BA_MSK) | \
					BR_PS_8  | BR_MS_UPMB | BR_V)
#define PUMA_CONF_OR_LOAD	(PUMA_CONF_OR_AM | PUMA_CONF_LOAD_TIMING)

#define PUMA_CONF_BR_READ	((PUMA_CONF_BASE & BR_BA_MSK) | BR_PS_16 | BR_V)
#define PUMA_CONF_OR_READ	(PUMA_CONF_OR_AM | PUMA_CONF_READ_TIMING)

#define CFG_BR4_PRELIM		PUMA_CONF_BR_READ
#define CFG_OR4_PRELIM		PUMA_CONF_OR_READ

/*
 * BR5/OR5: PUMA: SMA Bus 8 Bit
 *	BR5: 0x10200401		OR5: 0xffe0010a
 */
#define PUMA_SMA8_BASE		0x10200000	/* PUMA SMA Bus 8 Bit */
#define PUMA_SMA8_OR_AM		0xFFE00000	/* 2 MB */
#define PUMA_SMA8_TIMING	(OR_BI | OR_SCY_0_CLK | OR_EHTR)

#define CFG_BR5_PRELIM		((PUMA_SMA8_BASE & BR_BA_MSK) | BR_PS_8 | BR_V)
#define CFG_OR5_PRELIM		(PUMA_SMA8_OR_AM | PUMA_SMA8_TIMING | OR_SETA)

/*
 * BR6/OR6: PUMA: SMA Bus 16 Bit
 *	BR6: 0x10600801		OR6: 0xffe0010a
 */
#define PUMA_SMA16_BASE		0x10600000	/* PUMA SMA Bus 16 Bit */
#define PUMA_SMA16_OR_AM	0xFFE00000	/* 2 MB */
#define PUMA_SMA16_TIMING	(OR_BI | OR_SCY_0_CLK | OR_EHTR)

#define CFG_BR6_PRELIM		((PUMA_SMA16_BASE & BR_BA_MSK) | BR_PS_16 | BR_V)
#define CFG_OR6_PRELIM		(PUMA_SMA16_OR_AM | PUMA_SMA16_TIMING | OR_SETA)

/*
 * BR7/OR7: PUMA: external Flash
 *	BR7: 0x10a00801		OR7: 0xfe00010a
 */
#define PUMA_FLASH_BASE		0x10A00000	/* PUMA external Flash */
#define PUMA_FLASH_OR_AM	0xFE000000	/* 32 MB */
#define PUMA_FLASH_TIMING	(OR_BI | OR_SCY_0_CLK | OR_EHTR)

#define CFG_BR7_PRELIM		((PUMA_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_V)
#define CFG_OR7_PRELIM		(PUMA_FLASH_OR_AM | PUMA_FLASH_TIMING | OR_SETA)


/*
 * Memory Periodic Timer Prescaler
 */

/* periodic timer for refresh */
#define CFG_MAMR_PTA	97		/* start with divider for 100 MHz	*/

/* refresh rate 15.6 us (= 64 ms / 4K = 62.4 / quad bursts) for <= 128 MBit	*/
#define CFG_MPTPR_2BK_4K	MPTPR_PTP_DIV16		/* setting for 2 banks	*/
#define CFG_MPTPR_1BK_4K	MPTPR_PTP_DIV32		/* setting for 1 bank	*/

/* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit		*/
#define CFG_MPTPR_2BK_8K	MPTPR_PTP_DIV8		/* setting for 2 banks	*/
#define CFG_MPTPR_1BK_8K	MPTPR_PTP_DIV16		/* setting for 1 bank	*/

/*
 * MAMR settings for SDRAM
 */

/* 8 column SDRAM */
#define CFG_MAMR_8COL	((CFG_MAMR_PTA << MAMR_PTA_SHIFT)  | MAMR_PTAE	    |	\
			 MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 |	\
			 MAMR_RLFA_1X	 | MAMR_WLFA_1X	   | MAMR_TLFA_4X)
/* 9 column SDRAM */
#define CFG_MAMR_9COL	((CFG_MAMR_PTA << MAMR_PTA_SHIFT)  | MAMR_PTAE	    |	\
			 MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 |	\
			 MAMR_RLFA_1X	 | MAMR_WLFA_1X	   | MAMR_TLFA_4X)


/*
 * Internal Definitions
 *
 * Boot Flags
 */
#define	BOOTFLAG_COLD	0x01		/* Normal Power-On: Boot from FLASH	*/
#define BOOTFLAG_WARM	0x02		/* Software reboot			*/

#endif	/* __CONFIG_H */