cca48a59de
implementations. Early in the boot the kernel will use an approximate, however after the timer has been probed it will switch to a more accurate implementation. Reviewed by: manu Sponsored by: ABT Systems Ltd Differential Revision: https://reviews.freebsd.org/D5762
144 lines
4.0 KiB
C
144 lines
4.0 KiB
C
/*-
|
|
* Copyright (c) 1994-1998 Mark Brinicombe.
|
|
* Copyright (c) 1994 Brini.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software written for Brini by Mark Brinicombe
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Brini.
|
|
* 4. The name of the company nor the name of the author may be used to
|
|
* endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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.
|
|
*
|
|
* from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
|
|
*/
|
|
|
|
#include "opt_platform.h"
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#define _ARM32_BUS_DMA_PRIVATE
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/devmap.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/machdep.h>
|
|
#include <machine/platformvar.h>
|
|
|
|
#include <arm/ti/omap4/omap4_reg.h>
|
|
|
|
#include "platform_if.h"
|
|
|
|
void (*ti_cpu_reset)(void) = NULL;
|
|
|
|
static vm_offset_t
|
|
ti_lastaddr(platform_t plat)
|
|
{
|
|
|
|
return (devmap_lastaddr());
|
|
}
|
|
|
|
/*
|
|
* Construct static devmap entries to map out the most frequently used
|
|
* peripherals using 1mb section mappings.
|
|
*/
|
|
#if defined(SOC_OMAP4)
|
|
static int
|
|
ti_omap4_devmap_init(platform_t plat)
|
|
{
|
|
devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
|
|
devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
#if defined(SOC_TI_AM335X)
|
|
static int
|
|
ti_am335x_devmap_init(platform_t plat)
|
|
{
|
|
|
|
devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
|
|
devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB */
|
|
devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2 */
|
|
devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
|
|
devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3 */
|
|
devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3 */
|
|
devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
struct arm32_dma_range *
|
|
bus_dma_get_range(void)
|
|
{
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
bus_dma_get_range_nb(void)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
cpu_reset()
|
|
{
|
|
if (ti_cpu_reset)
|
|
(*ti_cpu_reset)();
|
|
else
|
|
printf("no cpu_reset implementation\n");
|
|
printf("Reset failed!\n");
|
|
while (1);
|
|
}
|
|
|
|
#if defined(SOC_OMAP4)
|
|
static platform_method_t omap4_methods[] = {
|
|
PLATFORMMETHOD(platform_devmap_init, ti_omap4_devmap_init),
|
|
PLATFORMMETHOD(platform_lastaddr, ti_lastaddr),
|
|
|
|
PLATFORMMETHOD_END,
|
|
};
|
|
FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 0);
|
|
#endif
|
|
|
|
#if defined(SOC_TI_AM335X)
|
|
static platform_method_t am335x_methods[] = {
|
|
PLATFORMMETHOD(platform_devmap_init, ti_am335x_devmap_init),
|
|
PLATFORMMETHOD(platform_lastaddr, ti_lastaddr),
|
|
|
|
PLATFORMMETHOD_END,
|
|
};
|
|
|
|
FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am335x", 0);
|
|
#endif
|