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freebsd-skq/sys/arm/freescale/imx/imx51_machdep.c

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Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
/*-
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.
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* Copyright (c) 2013 Ian Lepore <ian@freebsd.org>
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
* 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.
*
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.
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* 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)
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
* 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("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/reboot.h>
#include <machine/machdep.h>
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.
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#include <arm/freescale/imx/imx_machdep.h>
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
/*
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.
2013-10-26 23:13:20 +00:00
* 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.
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
*/
void
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.
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imx_devmap_init(void)
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
{
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.
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imx_devmap_addentry(0x70000000, 0x00100000);
imx_devmap_addentry(0x73f00000, 0x00100000);
imx_devmap_addentry(0x83f00000, 0x00100000);
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
}
void
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.
2013-10-26 23:13:20 +00:00
cpu_reset(void)
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
{
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.
2013-10-26 23:13:20 +00:00
imx_wdog_cpu_reset(0x73F98000);
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
}
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.
2013-10-26 23:13:20 +00:00
u_int imx_soc_type()
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
{
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.
2013-10-26 23:13:20 +00:00
return (IMXSOC_51);
Integrate Efika MX project back to home. Sponsored by: The FreeBSD Foundation
2013-03-20 15:39:27 +00:00
}
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