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usr / src / sys / arm / freescale / imx /

📁 ..
📄 files.imx5(1.32 KB)
📄 files.imx6(2.03 KB)
📄 imx51_ccm.c(17.31 KB)
📄 imx51_ccmreg.h(10.15 KB)
📄 imx51_ccmvar.h(4.17 KB)
📄 imx51_dpllreg.h(4.46 KB)
📄 imx51_ipuv3.c(19.86 KB)
📄 imx51_ipuv3_fbd.c(10.14 KB)
📄 imx51_ipuv3reg.h(33.8 KB)
📄 imx51_machdep.c(2.9 KB)
📄 imx51_sdmareg.h(5.32 KB)
📄 imx51_ssireg.h(9.02 KB)
📄 imx51_tzicreg.h(3.79 KB)
📄 imx53_machdep.c(2.8 KB)
📄 imx6_ahci.c(9.54 KB)
📄 imx6_anatop.c(23.38 KB)
📄 imx6_anatopreg.h(8.44 KB)
📄 imx6_anatopvar.h(2.11 KB)
📄 imx6_audmux.c(4.36 KB)
📄 imx6_ccm.c(12.29 KB)
📄 imx6_ccmreg.h(6.48 KB)
📄 imx6_hdmi.c(5.85 KB)
📄 imx6_ipu.c(35.34 KB)
📄 imx6_machdep.c(12.98 KB)
📄 imx6_machdep.h(1.56 KB)
📄 imx6_mp.c(5.46 KB)
📄 imx6_pl310.c(2.28 KB)
📄 imx6_sdma.c(11.34 KB)
📄 imx6_sdma.h(6.92 KB)
📄 imx6_snvs.c(6.2 KB)
📄 imx6_src.c(3.69 KB)
📄 imx6_src.h(1.46 KB)
📄 imx6_ssi.c(20.24 KB)
📄 imx6_usbphy.c(5.59 KB)
📄 imx_ccmvar.h(2.74 KB)
📄 imx_console.c(3.97 KB)
📄 imx_epit.c(13.28 KB)
📄 imx_gpio.c(23.44 KB)
📄 imx_gpt.c(12.28 KB)
📄 imx_gptreg.h(3.84 KB)
📄 imx_i2c.c(20.06 KB)
📄 imx_iomux.c(9.32 KB)
📄 imx_iomuxreg.h(2.92 KB)
📄 imx_iomuxvar.h(2.03 KB)
📄 imx_machdep.c(4.55 KB)
📄 imx_machdep.h(2.43 KB)
📄 imx_nop_usbphy.c(3.07 KB)
📄 imx_spi.c(16.13 KB)
📄 imx_wdog.c(7.36 KB)
📄 imx_wdogreg.h(2.91 KB)
📄 std.imx51(126 B)
📄 std.imx53(126 B)
📄 std.imx6(127 B)
📄 tzic.c(7.29 KB)

Editing: imx_console.c

/*-
 * Copyright (c) 2012, 2013 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Oleksandr Rybalko under sponsorship
 * from the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1.	Redistributions of source code must retain the above copyright
 *	notice, this list of conditions and the following disclaimer.
 * 2.	Redistributions in binary form must reproduce the above copyright
 *	notice, this list of conditions and the following disclaimer in the
 *	documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/* Simple UART console driver for Freescale i.MX515 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/cons.h>
#include <sys/consio.h>
#include <sys/kernel.h>

/* Allow it to be predefined, to be able to use another UART for console */
#ifndef	IMX_UART_BASE
#define	IMX_UART_BASE	0xe3fbc000 /* imx51 UART1 */
#endif

#define	IMX_RXD			0x00
#define	IMX_TXD			0x40

#define	IMX_UFCR		0x90
#define	IMX_USR1		0x94
#define	IMX_USR1_TRDY		(1 << 13)

#define	IMX_USR2		0x98
#define	IMX_USR2_RDR		(1 << 0)
#define	IMX_USR2_TXFE		(1 << 14)
#define	IMX_USR2_TXDC		(1 << 3)

#define	IMX_UTS			0xb4
#define	IMX_UTS_TXFULL		(1 << 4)

/*
 * The base address of the uart registers.
 *
 * This is global so that it can be changed on the fly from the outside.  For
 * example, set imx_uart_base=physaddr and then call cninit() as the first two
 * lines of initarm() and enjoy printf() availability through the tricky bits of
 * startup.  After initarm() switches from physical to virtual addressing, just
 * set imx_uart_base=virtaddr and printf keeps working.
 */
uint32_t imx_uart_base = IMX_UART_BASE;

/*
 * uart related funcs
 */
static uint32_t
ub_getreg(uint32_t off)
{

return *((volatile uint32_t *)(imx_uart_base + off));
}

static void
ub_setreg(uint32_t off, uint32_t val)
{

*((volatile uint32_t *)(imx_uart_base + off)) = val;
}

static int
ub_tstc(void)
{

return ((ub_getreg(IMX_USR2) & IMX_USR2_RDR) ? 1 : 0);
}

static int
ub_getc(void)
{

while (!ub_tstc());
		__asm __volatile("nop");

return (ub_getreg(IMX_RXD) & 0xff);
}

static void
ub_putc(unsigned char c)
{

if (c == '\n')
		ub_putc('\r');

while (ub_getreg(IMX_UTS) & IMX_UTS_TXFULL)
		__asm __volatile("nop");

ub_setreg(IMX_TXD, c);
}

static cn_probe_t	uart_cnprobe;
static cn_init_t	uart_cninit;
static cn_term_t	uart_cnterm;
static cn_getc_t	uart_cngetc;
static cn_putc_t	uart_cnputc;
static cn_grab_t	uart_cngrab;
static cn_ungrab_t	uart_cnungrab;

static void
uart_cngrab(struct consdev *cp)
{

}

static void
uart_cnungrab(struct consdev *cp)
{

}

static void
uart_cnprobe(struct consdev *cp)
{

sprintf(cp->cn_name, "uart");
        cp->cn_pri = CN_NORMAL;
}

static void
uart_cninit(struct consdev *cp)
{

/* Init fifo trigger levels to 32 bytes, refclock div to 2. */
	ub_setreg(IMX_UFCR, 0x00004210);
}

static void
uart_cnputc(struct consdev *cp, int c)
{

ub_putc(c);
}

static int
uart_cngetc(struct consdev * cp)
{

return ub_getc();
}

static void
uart_cnterm(struct consdev * cp)
{

}

CONSOLE_DRIVER(uart);

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Editing: imx_console.c

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