libubb/: helper library for UBB access

libubb/include/ubb/regbase.h

@@ -0,0 +1,49 @@
+/*
+ * include/ubb/regbase.h - Jz4740 minimum register definitions for UBB
+ *
+ * Written 2011-2012 by Werner Almesberger
+ * Copyright 2011-2012 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef UBB_REGBASE_H
+#define	UBB_REGBASE_H
+
+#include <stdint.h>
+
+
+#define	UBB_SOC_BASE	0x10000000
+#define	UBB_REG_WINDOW	0x4000000
+
+#define	REG(n)		(*(volatile uint32_t *) (ubb_mem+(n)))
+
+#define	REG_PADDR(r)	((unsigned long) ((void *) &(r)-ubb_mem+UBB_SOC_BASE))
+
+
+extern volatile void *ubb_mem;
+
+
+#define	_GPIO(n)	REG(0x0010000+(n))
+
+#define	PDPIN	_GPIO(0x300)	/* port D pin level */
+#define	PDDAT	_GPIO(0x310)	/* port D data set */
+#define	PDDATS	_GPIO(0x314)	/* port D data set */
+#define	PDDATC	_GPIO(0x318)	/* port D data clear */
+#define	PDPULL	_GPIO(0x330)	/* port D pull disable */
+#define	PDPULLS	_GPIO(0x334)	/* port D pull disable set */
+#define	PDPULLC	_GPIO(0x338)	/* port D pull disable clear */
+#define	PDFUN	_GPIO(0x340)	/* port D function */
+#define	PDFUNS	_GPIO(0x344)	/* port D function set */
+#define	PDFUNC	_GPIO(0x348)	/* port D function clear */
+#define	PDSEL	_GPIO(0x350)	/* port D select */
+#define	PDSELS	_GPIO(0x354)	/* port D select set */
+#define	PDSELC	_GPIO(0x358)	/* port D select clear */
+#define	PDDIR	_GPIO(0x360)	/* port D direction */
+#define	PDDIRS	_GPIO(0x364)	/* port D direction set */
+#define	PDDIRC	_GPIO(0x368)	/* port D direction clear */
+
+#endif /* !UBB_REGBASE_H */

libubb/include/ubb/regs4740.h

@@ -0,0 +1,75 @@
+/*
+ * include/ubb/regs4740.h - Jz4740 register definitions (subset)
+ *
+ * Written 2011-2012 by Werner Almesberger
+ * Copyright 2011-2012 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef UBB_REGS4740_H
+#define	UBB_REGS4740_H
+
+#include <stdint.h>
+
+#include <ubb/regbase.h>
+
+
+#define	_CGU(n)		REG(0x0000000+(n))
+#define	_INTC(n)	REG(0x0001000+(n))
+#define	_TCU(n)		REG(0x0002000+(n))
+#define	_MSC(n)		REG(0x0021000+(n))
+#define	_DMAC(n)	REG(0x3020000+(n))
+#define	_LCD(n)		REG(0x3050000+(n))
+
+#define	CLKGR	_CGU(0x0020)	/* Clock Gate */
+#define	MSCCDR	_CGU(0x0068)	/* MSC device clock divider */
+
+#define	ICMR	_INTC(0x04)	/* Interrupt controller mask */
+#define	ICMSR	_INTC(0x08)	/* Interrupt controller mask set */
+#define	ICMCR	_INTC(0x0c)	/* Interrupt controller mask clear */
+
+#define	TSSR	_TCU(0x2c)		/* Timer STOP set */
+#define	TSCR	_TCU(0x3c)		/* Timer STOP clear */
+#define	TESR	_TCU(0x14)		/* Timer counter enable set */
+#define	TECR	_TCU(0x18)		/* Timer counter enable clear */
+#define	TFR	_TCU(0x20)		/* Timer flag */
+#define	TFSR	_TCU(0x24)		/* Timer flag set */
+#define	TFCR	_TCU(0x28)		/* Timer flag clear */
+#define	TCSR(n)	_TCU(0x4c+0x10*(n))	/* Timer control */
+#define	TDFR(n)	_TCU(0x40+0x10*(n))	/* Timer data full */
+#define	TDHR(n)	_TCU(0x44+0x10*(n))	/* Timer data half */
+#define	TCNT(n)	_TCU(0x48+0x10*(n))	/* Timer counter */
+
+#define	MSC_STRPCL	_MSC(0x00)	/* Start/stop MMC/SD clock */
+#define	MSC_STAT	_MSC(0x04)	/* MSC status */
+#define	MSC_CLKRT	_MSC(0x08)	/* MSC clock rate */
+#define	MSC_CMDAT	_MSC(0x0c)	/* MMC/SD command and data control */
+#define	MSC_RESTO	_MSC(0x10)	/* MMC/SD response time out */
+#define	MSC_BLKLEN	_MSC(0x18)	/* MMC/SD block length */
+#define	MSC_NOB		_MSC(0x1c)	/* MMC/SD number of blocks */
+#define	MSC_SNOB	_MSC(0x20)	/* MMC/SD successful blocks */
+#define	MSC_IMASK	_MSC(0x24)	/* MMC/SD interrupt mask */
+#define	MSC_IREG	_MSC(0x28)	/* MMC/SD interrupt */
+#define	MSC_CMD		_MSC(0x2c)	/* MMC/SD command index */
+#define	MSC_ARG		_MSC(0x30)	/* MMC/SD command argument */
+#define	MSC_RXFIFO	_MSC(0x38)	/* MMC/SD receive data FIFO */
+#define	MSC_TXFIFO	_MSC(0x3c)	/* MMC/SD transmit data FIFO */
+
+#define	_DMAn(n, r)	_DMAC(0x20*(n)+(r))
+
+#define	DSA(n)		_DMAn(n, 0x00)	/* DMA source address */
+#define	DTA(n)		_DMAn(n, 0x04)	/* DMA target address */
+#define	DTC(n)		_DMAn(n, 0x08)	/* DMA transfer count */
+#define	DRT(n)		_DMAn(n, 0x0c)	/* DMA request type */
+#define	DCS(n)		_DMAn(n, 0x10)	/* DMA channel control/status */
+#define	DCM(n)		_DMAn(n, 0x14)	/* DMA command */
+#define	DMAC		_DMAC(0x300)	/* DMA control */
+#define	DDR		_DMAC(0x308)	/* DMA doorbell */
+
+#define	LCDCTRL		_LCD(0x30)	/* LCD control */
+
+#endif /* !UBB_REGS4740_H */

libubb/include/ubb/ubb.h

@@ -0,0 +1,44 @@
+/*
+ * include/ubb/ubb.h - Access functions for the Universal Breakout Board
+ *
+ * Written 2012 by Werner Almesberger
+ * Copyright 2012 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef UBB_UBB_H
+#define	UBB_UBB_H
+
+#include <stdint.h>
+
+#include <ubb/regbase.h>
+
+
+#define	UBB_nPWR	(1 << 2)	/* PD02 */
+#define	UBB_DAT2	(1 << 12)	/* PD12 */
+#define	UBB_DAT3	(1 << 13)	/* PD13 */
+#define	UBB_CMD		(1 << 8)	/* PD08 */
+#define	UBB_CLK		(1 << 9)	/* PD09 */
+#define	UBB_DAT0	(1 << 10)	/* PD10 */
+#define	UBB_DAT1	(1 << 11)	/* PD11 */
+
+#define	UBB_ALL_IO	(UBB_DAT2 | UBB_DAT3 | UBB_CMD | UBB_CLK | UBB_DAT0 | \
+			UBB_DAT1)
+#define	UBB_ALL		(UBB_nPWR | UBB_ALL_IO)
+
+#define SET(mask)	PDDATS = (mask)
+#define CLR(mask)	PDDATC = (mask)
+#define OUT(mask)	PDDIRS = (mask)
+#define IN(mask)	PDDIRC = (mask)
+#define PIN(mask)	(!!(PDPIN & (mask)))
+
+
+int ubb_open(uint32_t keep);
+void ubb_power(int on);
+void ubb_close(uint32_t keep);
+
+#endif /* !UBB_UBB_H */