acrn-kernel/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_prom.c

98 lines
2.6 KiB
C

/*
* rbtx4927 specific prom routines
*
* Author: MontaVista Software, Inc.
* source@mvista.com
*
* Copyright 2001-2002 MontaVista Software Inc.
*
* Copyright (C) 2004 MontaVista Software Inc.
* Author: Manish Lachwani, mlachwani@mvista.com
*
* 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 <asm/cpu.h>
#include <asm/tx4927/tx4927.h>
void __init prom_init_cmdline(void)
{
int argc = (int) fw_arg0;
char **argv = (char **) fw_arg1;
int i; /* Always ignore the "-c" at argv[0] */
/* ignore all built-in args if any f/w args given */
if (argc > 1) {
*arcs_cmdline = '\0';
}
for (i = 1; i < argc; i++) {
if (i != 1) {
strcat(arcs_cmdline, " ");
}
strcat(arcs_cmdline, argv[i]);
}
}
void __init prom_init(void)
{
extern int tx4927_get_mem_size(void);
extern char* toshiba_name;
int msize;
prom_init_cmdline();
mips_machgroup = MACH_GROUP_TOSHIBA;
if ((read_c0_prid() & 0xff) == PRID_REV_TX4927) {
mips_machtype = MACH_TOSHIBA_RBTX4927;
toshiba_name = "TX4927";
} else {
mips_machtype = MACH_TOSHIBA_RBTX4937;
toshiba_name = "TX4937";
}
msize = tx4927_get_mem_size();
add_memory_region(0, msize << 20, BOOT_MEM_RAM);
}
unsigned long __init prom_free_prom_memory(void)
{
return 0;
}
const char *get_system_type(void)
{
return "Toshiba RBTX4927/RBTX4937";
}
char * __init prom_getcmdline(void)
{
return &(arcs_cmdline[0]);
}