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/*
*
* BRIEF MODULE DESCRIPTION
* Galileo PROM library initialisation code.
*
* Copyright 2000 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or support@mvista.com
*
* This file was derived from Carsten Langgaard's
* arch/mips/mips-boards/generic/generic.c
*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``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 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/bootmem.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
#include <linux/config.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <asm/galileo-boards/ev96100.h>
extern char _end;
#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
/* Environment variable */
typedef struct {
char *name;
char *val;
} t_env_var;
int prom_argc;
char **prom_argv, **prom_envp;
int init_debug = 0;
char *prom_getenv(char *envname)
{
/*
* Return a pointer to the given environment variable.
*/
t_env_var *env = (t_env_var *) prom_envp;
int i;
i = strlen(envname);
while (env->name) {
if (strncmp(envname, env->name, i) == 0) {
return (env->val);
}
env++;
}
return (NULL);
}
static inline unsigned char str2hexnum(unsigned char c)
{
if (c >= '0' && c <= '9')
return c - '0';
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
return 0; /* foo */
}
static inline void str2eaddr(unsigned char *ea, unsigned char *str)
{
int i;
for (i = 0; i < 6; i++) {
unsigned char num;
if ((*str == '.') || (*str == ':'))
str++;
num = str2hexnum(*str++) << 4;
num |= (str2hexnum(*str++));
ea[i] = num;
}
}
int get_ethernet_addr(char *ethernet_addr)
{
char *ethaddr_str;
ethaddr_str = prom_getenv("ethaddr");
if (!ethaddr_str) {
printk("ethaddr not set in boot prom\n");
return -1;
}
str2eaddr(ethernet_addr, ethaddr_str);
if (init_debug > 1) {
int i;
printk("get_ethernet_addr: ");
for (i = 0; i < 5; i++)
printk("%02x:",
(unsigned char) *(ethernet_addr + i));
printk("%02x\n", *(ethernet_addr + i));
}
return 0;
}
int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
{
unsigned long mem_size, free_start, free_end, start_pfn,
bootmap_size;
volatile unsigned char *uart;
char ppbuf[8];
prom_argc = argc;
prom_argv = argv;
prom_envp = envp;
//init_serial();
mips_machgroup = MACH_GROUP_GALILEO;
#if 0
prom_ops = &ev96100_prom_ops;
prom_ops->printf = prom_vec[5];
#endif
puts("Linux running");
puts("");
prom_init_cmdline();
//prom_meminit();
/* 64 MB non-upgradable */
mem_size = 64 << 20;
free_start = PHYSADDR(PFN_ALIGN(&_end));
free_end = mem_size;
start_pfn = PFN_UP((unsigned long) &_end);
/* Register all the contiguous memory with the bootmem allocator
and free it. Be careful about the bootmem freemap. */
bootmap_size = init_bootmem(start_pfn, mem_size >> PAGE_SHIFT);
/* Free the entire available memory after the _end symbol. */
free_start += bootmap_size;
free_bootmem(free_start, free_end - free_start);
return 0;
}
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