65 lines
2.9 KiB
C
65 lines
2.9 KiB
C
/*-
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* Copyright (c) 2014 Andrew Turner
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _MACHINE_PLATFORM_H_
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#define _MACHINE_PLATFORM_H_
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/*
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* Initialization functions called by the common initarm() function in
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* arm/machdep.c (but not necessarily from the custom initarm() functions of
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* older code).
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*
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* - platform_probe_and_attach() is called very early, after parsing the boot
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* params and after physical memory has been located and sized.
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*
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* - platform_devmap_init() is called as one of the last steps of early virtual
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* memory initialization, shortly before the new page tables are installed.
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*
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* - platform_lastaddr() is called after platform_devmap_init(), and must return
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* the address of the first byte of unusable KVA space. This allows a
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* platform to carve out of the top of the KVA space whatever reserves it
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* needs for things like static device mapping, and this is called to get the
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* value before calling pmap_bootstrap() which uses the value to size the
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* available KVA.
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*
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* - platform_gpio_init() is called after the static device mappings are
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* established and just before cninit(). The intention is that the routine
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* can do any hardware setup (such as gpio or pinmux) necessary to make the
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* console functional.
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*
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* - platform_late_init() is called just after cninit(). This is the first of
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* the init routines that can use printf() and expect the output to appear on
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* a standard console.
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*
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*/
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void platform_probe_and_attach(void);
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int platform_devmap_init(void);
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vm_offset_t platform_lastaddr(void);
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void platform_gpio_init(void);
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void platform_late_init(void);
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#endif /* _MACHINE_PLATFORM_H_ */
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