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/*
* linux/arch/mips/philips/nino/prom.c
*
* Copyright (C) 2001 Steven J. Hill (sjhill@realitydiluted.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Early initialization code for the Philips Nino.
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <asm/page.h>
char arcs_cmdline[COMMAND_LINE_SIZE];
#ifdef CONFIG_FB_TX3912
extern u_long tx3912fb_paddr;
extern u_long tx3912fb_vaddr;
extern u_long tx3912fb_size;
#endif
/* Do basic initialization */
void __init prom_init(int argc, char **argv,
unsigned long magic, int *prom_vec)
{
u_long free_end, mem_size;
u_int i;
/*
* collect args and prepare cmd_line
*/
for (i = 1; i < argc; i++) {
strcat(arcs_cmdline, argv[i]);
if (i < (argc - 1))
strcat(arcs_cmdline, " ");
}
mips_machgroup = MACH_GROUP_PHILIPS;
mips_machtype = MACH_PHILIPS_NINO;
#ifdef CONFIG_NINO_4MB
mem_size = 4 << 20;
#elif CONFIG_NINO_8MB
mem_size = 8 << 20;
#elif CONFIG_NINO_16MB
mem_size = 16 << 20;
#endif
#ifdef CONFIG_FB_TX3912
/*
* The LCD controller requires that the framebuffer
* start address fall within a 1MB segment and is
* aligned on a 16 byte boundary. The way to assure
* this is to place the framebuffer at the end of
* memory and mark it as reserved.
*/
free_end = (mem_size - tx3912fb_size) & PAGE_MASK;
add_memory_region(0, free_end, BOOT_MEM_RAM);
add_memory_region(free_end, (mem_size - free_end), BOOT_MEM_RESERVED);
/*
* Calculate physical and virtual addresses for
* the beginning of the framebuffer.
*/
tx3912fb_paddr = PHYSADDR(free_end);
tx3912fb_vaddr = KSEG1ADDR(free_end);
#else
add_memory_region(0, mem_size, BOOT_MEM_RAM);
#endif
}
void __init prom_free_prom_memory (void)
{
}
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