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885 decky 1
/*
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 * Copyright (C) 2005 Martin Decky
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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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 *
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 * - 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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 * - 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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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
1789 jermar 28
 
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/**
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 * @file
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 * @brief	Architecture dependent parts of OpenFirmware interface.
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 */
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#include <ofwarch.h>  
1764 jermar 35
#include <ofw.h>
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#include <printf.h>
1881 jermar 37
#include <string.h>
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#include "main.h"
885 decky 39
 
1837 jermar 40
int bpp2align[] = {
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	[0] = 0,		/** Invalid bpp. */
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	[1] = 1,		/** 8bpp is not aligned. */
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	[2] = 2,		/** 16bpp is naturally aligned. */
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	[3] = 4,		/** 24bpp is aligned on 4 byte boundary. */
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	[4] = 4,		/** 32bpp is naturally aligned. */
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};
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1764 jermar 48
void write(const char *str, const int len)
885 decky 49
{
1773 jermar 50
	int i;
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	for (i = 0; i < len; i++) {
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		if (str[i] == '\n')
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			ofw_write("\r", 1);
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		ofw_write(&str[i], 1);
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	}
885 decky 57
}
1783 jermar 58
 
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int ofw_translate_failed(ofw_arg_t flag)
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{
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	return flag != -1;
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}
1789 jermar 63
 
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int ofw_keyboard(keyboard_t *keyboard)
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{
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	char device_name[BUF_SIZE];
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	uint32_t virtaddr;
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	if (ofw_get_property(ofw_aliases, "keyboard", device_name, sizeof(device_name)) <= 0)
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		return false;
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	phandle device = ofw_find_device(device_name);
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	if (device == -1)
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		return false;
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	if (ofw_get_property(device, "address", &virtaddr, sizeof(virtaddr)) <= 0)
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		return false;
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	if (!(keyboard->addr = ofw_translate((void *) ((uintptr_t) virtaddr))))
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		return false;
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	return true;
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}
1881 jermar 84
 
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int ofw_cpu(cpu_t *cpu)
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{
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	char type_name[BUF_SIZE];
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	phandle node;
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	node = ofw_get_child_node(ofw_root);
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	if (node == 0 || node == -1) {
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		printf("Could not find any child nodes of the root node.\n");
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		return;
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	}
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	for (; node != 0 && node != -1; node = ofw_get_peer_node(node)) {
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		if (ofw_get_property(node, "device_type", type_name, sizeof(type_name)) > 0) {
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			if (strncmp(type_name, "cpu", 3) == 0) {
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				uint32_t mhz;
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				if (ofw_get_property(node, "clock-frequency", &mhz, sizeof(mhz)) <= 0)
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					continue;
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				cpu->clock_frequency = mhz;
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				return 1;
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			}
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		}
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	};
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	return 0;
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}