path: root/arch/blackfin/kernel/setup.c

/*
 * arch/blackfin/kernel/setup.c
 *
 * Copyright 2004-2006 Analog Devices Inc.
 *
 * Enter bugs at http://blackfin.uclinux.org/
 *
 * Licensed under the GPL-2 or later.
 */

#include <linux/delay.h>
#include <linux/console.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <linux/cpu.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/tty.h>
#include <linux/pfn.h>

#include <linux/ext2_fs.h>
#include <linux/cramfs_fs.h>
#include <linux/romfs_fs.h>

#include <asm/cplb.h>
#include <asm/cacheflush.h>
#include <asm/blackfin.h>
#include <asm/cplbinit.h>
#include <asm/div64.h>
#include <asm/cpu.h>
#include <asm/fixed_code.h>
#include <asm/early_printk.h>

u16 _bfin_swrst;
EXPORT_SYMBOL(_bfin_swrst);

unsigned long memory_start, memory_end, physical_mem_end;
unsigned long _rambase, _ramstart, _ramend;
unsigned long reserved_mem_dcache_on;
unsigned long reserved_mem_icache_on;
EXPORT_SYMBOL(memory_start);
EXPORT_SYMBOL(memory_end);
EXPORT_SYMBOL(physical_mem_end);
EXPORT_SYMBOL(_ramend);
EXPORT_SYMBOL(reserved_mem_dcache_on);

#ifdef CONFIG_MTD_UCLINUX
unsigned long memory_mtd_end, memory_mtd_start, mtd_size;
unsigned long _ebss;
EXPORT_SYMBOL(memory_mtd_end);
EXPORT_SYMBOL(memory_mtd_start);
EXPORT_SYMBOL(mtd_size);
#endif

char __initdata command_line[COMMAND_LINE_SIZE];
void __initdata *init_retx, *init_saved_retx, *init_saved_seqstat,
	*init_saved_icplb_fault_addr, *init_saved_dcplb_fault_addr;

/* boot memmap, for parsing "memmap=" */
#define BFIN_MEMMAP_MAX		128 /* number of entries in bfin_memmap */
#define BFIN_MEMMAP_RAM		1
#define BFIN_MEMMAP_RESERVED	2
struct bfin_memmap {
	int nr_map;
	struct bfin_memmap_entry {
		unsigned long long addr; /* start of memory segment */
		unsigned long long size;
		unsigned long type;
	} map[BFIN_MEMMAP_MAX];
} bfin_memmap __initdata;

/* for memmap sanitization */
struct change_member {
	struct bfin_memmap_entry *pentry; /* pointer to original entry */
	unsigned long long addr; /* address for this change point */
};
static struct change_member change_point_list[2*BFIN_MEMMAP_MAX] __initdata;
static struct change_member *change_point[2*BFIN_MEMMAP_MAX] __initdata;
static struct bfin_memmap_entry *overlap_list[BFIN_MEMMAP_MAX] __initdata;
static struct bfin_memmap_entry new_map[BFIN_MEMMAP_MAX] __initdata;

DEFINE_PER_CPU(struct blackfin_cpudata, cpu_data);

static int early_init_clkin_hz(char *buf);

#if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE)
void __init generate_cplb_tables(void)
{
	unsigned int cpu;

	generate_cplb_tables_all();
	/* Generate per-CPU I&D CPLB tables */
	for (cpu = 0; cpu < num_possible_cpus(); ++cpu)
		generate_cplb_tables_cpu(cpu);
}
#endif

void __cpuinit bfin_setup_caches(unsigned int cpu)
{
#ifdef CONFIG_BFIN_ICACHE
	bfin_icache_init(icplb_tbl[cpu]);
#endif

#ifdef CONFIG_BFIN_DCACHE
	bfin_dcache_init(dcplb_tbl[cpu]);
#endif