svn commit: r257197 - head/sys/arm/freescale/imx
Ian Lepore
ian at FreeBSD.org
Sat Oct 26 23:13:21 UTC 2013
Author: ian
Date: Sat Oct 26 23:13:20 2013
New Revision: 257197
URL: http://svnweb.freebsd.org/changeset/base/257197
Log:
Maximize available kva space by doing static device mapping from the top
of the address space downwards, and then returning the lowest mapped
device address from initarm_lastaddr(). This adds over 500MB of kva
space compared to the old way of hardcoding the end address as 0xE0000000.
Also, pre-map most of the SoC's common memory-mapped devices using 1MB
section mappings so that all device access uses just a few TLB entries.
Graphics devices aren't mapped this way yet, but probably should be.
To provide this new functionality without pasting identical code into
multiple imxNN_machdep.c files, rework the imx machdep code so that
things common to the whole family of SoCs are in a new imx_machdep.c file.
The rewritten imxNN_machdep.c files contain just things specific to an
individual SoC.
Added:
head/sys/arm/freescale/imx/imx_machdep.c (contents, props changed)
head/sys/arm/freescale/imx/imx_machdep.h (contents, props changed)
Modified:
head/sys/arm/freescale/imx/files.imx51
head/sys/arm/freescale/imx/files.imx53
head/sys/arm/freescale/imx/imx51_machdep.c
head/sys/arm/freescale/imx/imx53_machdep.c
Modified: head/sys/arm/freescale/imx/files.imx51
==============================================================================
--- head/sys/arm/freescale/imx/files.imx51 Sat Oct 26 20:57:26 2013 (r257196)
+++ head/sys/arm/freescale/imx/files.imx51 Sat Oct 26 23:13:20 2013 (r257197)
@@ -8,6 +8,7 @@ arm/arm/irq_dispatch.S standard
kern/kern_clocksource.c standard
# Init
+arm/freescale/imx/imx_machdep.c standard
arm/freescale/imx/imx51_machdep.c standard
arm/freescale/imx/common.c standard
arm/freescale/imx/bus_space.c standard
Modified: head/sys/arm/freescale/imx/files.imx53
==============================================================================
--- head/sys/arm/freescale/imx/files.imx53 Sat Oct 26 20:57:26 2013 (r257196)
+++ head/sys/arm/freescale/imx/files.imx53 Sat Oct 26 23:13:20 2013 (r257197)
@@ -8,6 +8,7 @@ arm/arm/irq_dispatch.S standard
kern/kern_clocksource.c standard
# Init
+arm/freescale/imx/imx_machdep.c standard
arm/freescale/imx/imx53_machdep.c standard
arm/freescale/imx/common.c standard
arm/freescale/imx/bus_space.c standard
Modified: head/sys/arm/freescale/imx/imx51_machdep.c
==============================================================================
--- head/sys/arm/freescale/imx/imx51_machdep.c Sat Oct 26 20:57:26 2013 (r257196)
+++ head/sys/arm/freescale/imx/imx51_machdep.c Sat Oct 26 23:13:20 2013 (r257197)
@@ -1,14 +1,7 @@
/*-
- * Copyright (c) 1994-1998 Mark Brinicombe.
- * Copyright (c) 1994 Brini.
- * Copyright (c) 2012, 2013 The FreeBSD Foundation
+ * Copyright (c) 2013 Ian Lepore <ian at freebsd.org>
* All rights reserved.
*
- *
- * This code is derived from software written for Brini by Mark Brinicombe
- * Portions of this software were 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:
@@ -17,26 +10,18 @@
* 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)
+ * 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.
- *
- * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
*/
#include "opt_platform.h"
@@ -44,99 +29,42 @@
#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/reboot.h>
-#include <vm/vm.h>
-#include <vm/pmap.h>
-
-#include <machine/bus.h>
-#include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
#include <machine/machdep.h>
-#include <machine/pmap.h>
-
-#include <dev/fdt/fdt_common.h>
-
-#define IMX51_DEV_VIRT_BASE 0xe0000000
-vm_offset_t
-initarm_lastaddr(void)
-{
-
- boothowto |= RB_VERBOSE|RB_MULTIPLE;
- bootverbose = 1;
-
- if (fdt_immr_addr(IMX51_DEV_VIRT_BASE) != 0)
- while (1);
-
- /* Platform-specific initialisation */
- return (fdt_immr_va - ARM_NOCACHE_KVA_SIZE);
-}
+#include <arm/freescale/imx/imx_machdep.h>
/*
- * Set initial values of GPIO output ports
+ * Set up static device mappings. This is hand-optimized platform-specific
+ * config data which covers most of the common on-chip devices with a few 1MB
+ * section mappings.
+ *
+ * Notably missing are entries for GPU, IPU, in general anything video related.
+ *
+ * Note that for imx this is called from initarm_lastaddr() so that the lowest
+ * kva address used for static device mapping can be known at that point.
*/
void
-initarm_gpio_init(void)
+imx_devmap_init(void)
{
+ imx_devmap_addentry(0x70000000, 0x00100000);
+ imx_devmap_addentry(0x73f00000, 0x00100000);
+ imx_devmap_addentry(0x83f00000, 0x00100000);
}
void
-initarm_late_init(void)
-{
-
-}
-
-#define FDT_DEVMAP_MAX 2
-static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
- { 0, 0, 0, 0, 0, },
- { 0, 0, 0, 0, 0, }
-};
-
-/*
- * Construct pmap_devmap[] with DT-derived config data.
- */
-int
-platform_devmap_init(void)
-{
-
- /*
- * Map segment where UART1 and UART2 located.
- */
- fdt_devmap[0].pd_va = IMX51_DEV_VIRT_BASE + 0x03f00000;
- fdt_devmap[0].pd_pa = 0x73f00000;
- fdt_devmap[0].pd_size = 0x00100000;
- fdt_devmap[0].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
- fdt_devmap[0].pd_cache = PTE_NOCACHE;
-
- pmap_devmap_bootstrap_table = &fdt_devmap[0];
- return (0);
-}
-
-struct arm32_dma_range *
-bus_dma_get_range(void)
+cpu_reset(void)
{
- return (NULL);
+ imx_wdog_cpu_reset(0x73F98000);
}
-int
-bus_dma_get_range_nb(void)
+u_int imx_soc_type()
{
-
- return (0);
+ return (IMXSOC_51);
}
-void
-cpu_reset(void)
-{
-
- printf("Reset ...\n");
- /* Clear n_reset flag */
- *((volatile u_int16_t *)(IMX51_DEV_VIRT_BASE + 0x03f98000)) =
- (u_int16_t)0;
- while (1);
-}
Modified: head/sys/arm/freescale/imx/imx53_machdep.c
==============================================================================
--- head/sys/arm/freescale/imx/imx53_machdep.c Sat Oct 26 20:57:26 2013 (r257196)
+++ head/sys/arm/freescale/imx/imx53_machdep.c Sat Oct 26 23:13:20 2013 (r257197)
@@ -1,13 +1,7 @@
/*-
- * Copyright (c) 1994-1998 Mark Brinicombe.
- * Copyright (c) 1994 Brini.
- * Copyright (c) 2012, 2013 The FreeBSD Foundation
+ * Copyright (c) 2013 Ian Lepore <ian at freebsd.org>
* All rights reserved.
*
- * This code is derived from software written for Brini by Mark Brinicombe
- * Portions of this software were 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:
@@ -16,20 +10,14 @@
* 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)
+ * 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
@@ -41,101 +29,43 @@
#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/reboot.h>
-#include <vm/vm.h>
-#include <vm/pmap.h>
-
-#include <machine/bus.h>
-#include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
#include <machine/machdep.h>
-#include <machine/pmap.h>
-
-#include <dev/fdt/fdt_common.h>
-
-#define IMX53_DEV_VIRT_BASE 0xe0000000
-
-vm_offset_t
-initarm_lastaddr(void)
-{
-
- boothowto |= RB_VERBOSE|RB_MULTIPLE;
- bootverbose = 1;
-
- if (fdt_immr_addr(IMX53_DEV_VIRT_BASE) != 0)
- while (1);
-
- /* Platform-specific initialisation */
- return (fdt_immr_va - ARM_NOCACHE_KVA_SIZE);
-}
+#include <arm/freescale/imx/imx_machdep.h>
/*
- * Set initial values of GPIO output ports
+ * Set up static device mappings. This is hand-optimized platform-specific
+ * config data which covers most of the common on-chip devices with a few 1MB
+ * section mappings.
+ *
+ * Notably missing are entries for GPU, IPU, in general anything video related.
+ *
+ * Note that for imx this is called from initarm_lastaddr() so that the lowest
+ * kva address used for static device mapping can be known at that point.
*/
void
-initarm_gpio_init(void)
+imx_devmap_init(void)
{
+ imx_devmap_addentry(0x50000000, 0x00100000);
+ imx_devmap_addentry(0x53f00000, 0x00100000);
+ imx_devmap_addentry(0x63f00000, 0x00100000);
}
void
-initarm_late_init(void)
-{
-
-}
-
-#define FDT_DEVMAP_MAX 2
-static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
- { 0, 0, 0, 0, 0, },
- { 0, 0, 0, 0, 0, }
-};
-
-/*
- * Construct pmap_devmap[] with DT-derived config data.
- */
-int
-platform_devmap_init(void)
-{
-
- /*
- * Map segment where UART1 and UART2 located.
- */
- fdt_devmap[0].pd_va = IMX53_DEV_VIRT_BASE + 0x03f00000;
- fdt_devmap[0].pd_pa = 0x53f00000;
- fdt_devmap[0].pd_size = 0x00100000;
- fdt_devmap[0].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
- fdt_devmap[0].pd_cache = PTE_NOCACHE;
-
- pmap_devmap_bootstrap_table = &fdt_devmap[0];
-
- return (0);
-}
-
-struct arm32_dma_range *
-bus_dma_get_range(void)
+cpu_reset(void)
{
- return (NULL);
+ imx_wdog_cpu_reset(0x53F98000);
}
-int
-bus_dma_get_range_nb(void)
+u_int imx_soc_type()
{
-
- return (0);
+ return (IMXSOC_53);
}
-void
-cpu_reset(void)
-{
- printf("Reset ...\n");
- /* Clear n_reset flag */
- *((volatile u_int16_t *)(IMX53_DEV_VIRT_BASE + 0x03f98000)) =
- (u_int16_t)0;
- while (1);
-}
Added: head/sys/arm/freescale/imx/imx_machdep.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/freescale/imx/imx_machdep.c Sat Oct 26 23:13:20 2013 (r257197)
@@ -0,0 +1,200 @@
+/*-
+ * Copyright (c) 2013 Ian Lepore <ian at freebsd.org>
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+#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/reboot.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <machine/armreg.h>
+#include <machine/bus.h>
+#include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
+#include <machine/machdep.h>
+#include <machine/pmap.h>
+
+#include <arm/freescale/imx/imx_machdep.h>
+#include <arm/freescale/imx/imx_wdogreg.h>
+
+#define IMX_MAX_DEVMAP_ENTRIES 8
+
+static struct pmap_devmap devmap_entries[IMX_MAX_DEVMAP_ENTRIES];
+static u_int devmap_idx;
+static vm_offset_t devmap_vaddr = ARM_VECTORS_HIGH;
+
+void
+imx_devmap_addentry(vm_paddr_t pa, vm_size_t sz)
+{
+ struct pmap_devmap *m;
+
+ /*
+ * The last table entry is the all-zeroes end-of-table marker. If we're
+ * about to overwrite it the world is coming to an end. This code runs
+ * too early for the panic to be printed unless a special early-debug
+ * console is in use, but there's nothing else we can do.
+ */
+ if (devmap_idx == (IMX_MAX_DEVMAP_ENTRIES - 1))
+ panic("IMX_MAX_DEVMAP_ENTRIES is too small!\n");
+
+ /*
+ * Allocate virtual address space from the top of kva downwards. If the
+ * range being mapped is aligned and sized to 1MB boundaries then also
+ * align the virtual address to the next-lower 1MB boundary so that we
+ * end up with a section mapping.
+ */
+ if ((pa & 0x000fffff) == 0 && (sz & 0x000fffff) == 0) {
+ devmap_vaddr = (devmap_vaddr - sz) & ~0x000fffff;
+ } else {
+ devmap_vaddr = (devmap_vaddr - sz) & ~0x00000fff;
+ }
+ m = &devmap_entries[devmap_idx++];
+ m->pd_va = devmap_vaddr;
+ m->pd_pa = pa;
+ m->pd_size = sz;
+ m->pd_prot = VM_PROT_READ | VM_PROT_WRITE;
+ m->pd_cache = PTE_DEVICE;
+}
+
+vm_offset_t
+initarm_lastaddr(void)
+{
+
+ /* XXX - Get rid of this stuff soon. */
+ boothowto |= RB_VERBOSE|RB_MULTIPLE;
+ bootverbose = 1;
+
+ /*
+ * Normally initarm() calls platform_devmap_init() much later in the
+ * init process to set up static device mappings. To calculate the
+ * highest available kva address we have to do that setup first. It
+ * maps downwards from ARM_VECTORS_HIGH and the last usable kva address
+ * is the point right before the virtual address of the first static
+ * mapping. So go set up the static mapping table now, then we can
+ * return the lowest static devmap vaddr as the end of usable kva.
+ */
+ imx_devmap_init();
+
+ pmap_devmap_bootstrap_table = devmap_entries;
+
+ return (devmap_vaddr);
+}
+
+int
+platform_devmap_init(void)
+{
+
+ /* On imx this work is done during initarm_lastaddr(). */
+ return (0);
+}
+
+/*
+ * Set initial values of GPIO output ports
+ */
+void
+initarm_gpio_init(void)
+{
+
+}
+
+void
+initarm_late_init(void)
+{
+ struct pmap_devmap *m;
+
+ /*
+ * We did the static devmap setup earlier, during initarm_lastaddr(),
+ * but now the console should be working and we can be verbose about
+ * what we did.
+ */
+ if (bootverbose) {
+ for (m = devmap_entries; m->pd_va != 0; ++m) {
+ printf("Devmap: phys 0x%08x virt 0x%08x size %uK\n",
+ m->pd_pa, m->pd_va, m->pd_size / 1024);
+ }
+ }
+
+
+}
+
+struct arm32_dma_range *
+bus_dma_get_range(void)
+{
+
+ return (NULL);
+}
+
+int
+bus_dma_get_range_nb(void)
+{
+
+ return (0);
+}
+
+void
+imx_wdog_cpu_reset(vm_offset_t wdcr_physaddr)
+{
+
+ /*
+ * This code which manipulates the watchdog hardware is here to
+ * implement cpu_reset() because the watchdog is the only way for
+ * software to reset the chip. Why here and not in imx_wdog.c? Because
+ * there's no requirement that the watchdog driver be compiled in, but
+ * it's nice to be able to reboot even if it's not.
+ */
+ volatile uint16_t * pcr;
+ const struct pmap_devmap *pd;
+
+ if ((pd = pmap_devmap_find_pa(wdcr_physaddr, 2)) == NULL) {
+ printf("cpu_reset() can't find its control register... locking up now.");
+ } else {
+ pcr = (uint16_t *)(pd->pd_va + (wdcr_physaddr - pd->pd_pa));
+ /*
+ * This deceptively simple write enables the watchdog, sets the timeout
+ * to its minimum value (half a second), and also clears the SRS bit
+ * which results in the SFTW (software-requested reset) bit being set in
+ * the watchdog status register after the reset. This is how software
+ * can distinguish a requested reset from a wdog timeout.
+ */
+ *pcr = WDOG_CR_WDE;
+ }
+ while (1)
+ continue;
+}
+
+u_int
+imx_soc_family(void)
+{
+ return (imx_soc_type() >> IMXSOC_FAMSHIFT);
+}
+
+
Added: head/sys/arm/freescale/imx/imx_machdep.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/freescale/imx/imx_machdep.h Sat Oct 26 23:13:20 2013 (r257197)
@@ -0,0 +1,60 @@
+/*-
+ * Copyright (c) 2013 Ian Lepore <ian at freebsd.org>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef IMX_MACHDEP_H
+#define IMX_MACHDEP_H
+
+#include <sys/types.h>
+
+/* Common functions, implemented in imx_machdep.c. */
+
+void imx_devmap_addentry(vm_paddr_t _pa, vm_size_t _sz);
+void imx_wdog_cpu_reset(vm_offset_t _wdcr_phys) __attribute__((__noreturn__));
+
+/*
+ * SoC identity.
+ */
+#define IMXSOC_51 0x05000100
+#define IMXSOC_53 0x05000300
+#define IMXSOC_6S 0x06000010
+#define IMXSOC_6SL 0x06000011
+#define IMXSOC_6D 0x06000020
+#define IMXSOC_6DL 0x06000021
+#define IMXSOC_6Q 0x06000040
+#define IMXSOC_6QL 0x06000041
+#define IMXSOC_FAMSHIFT 24
+
+u_int imx_soc_type(void);
+u_int imx_soc_family(void);
+
+/* From here down, routines are implemented in imxNN_machdep.c. */
+
+void imx_devmap_init(void);
+
+#endif
+
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