setup.c 3.8 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
/*
 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
 * reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the NetLogic
 * license below:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``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 NETLOGIC OR CONTRIBUTORS 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.
 */

#include <linux/kernel.h>
36
#include <linux/of_fdt.h>
37

38
#include <asm/idle.h>
39 40 41 42 43 44 45 46 47 48 49
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/bootinfo.h>

#include <asm/netlogic/haldefs.h>
#include <asm/netlogic/common.h>

#include <asm/netlogic/xlp-hal/iomap.h>
#include <asm/netlogic/xlp-hal/xlp.h>
#include <asm/netlogic/xlp-hal/sys.h>

50 51
uint64_t nlm_io_base;
struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
52
cpumask_t nlm_cpumask = CPU_MASK_CPU0;
53
unsigned int nlm_threads_per_core;
54

55 56
static void nlm_linux_exit(void)
{
57 58 59
	uint64_t sysbase = nlm_get_node(0)->sysbase;

	nlm_write_sys_reg(sysbase, SYS_CHIP_RESET, 1);
60 61 62 63
	for ( ; ; )
		cpu_wait();
}

64 65 66 67 68 69 70 71 72 73 74 75
static void nlm_fixup_mem(void)
{
	const int pref_backup = 512;
	int i;

	for (i = 0; i < boot_mem_map.nr_map; i++) {
		if (boot_mem_map.map[i].type != BOOT_MEM_RAM)
			continue;
		boot_mem_map.map[i].size -= pref_backup;
	}
}

76 77 78 79 80 81
void __init plat_mem_setup(void)
{
	panic_timeout	= 5;
	_machine_restart = (void (*)(char *))nlm_linux_exit;
	_machine_halt	= nlm_linux_exit;
	pm_power_off	= nlm_linux_exit;
82

83 84
	/* memory and bootargs from DT */
	early_init_devtree(initial_boot_params);
85
	nlm_fixup_mem();
86 87 88 89 90 91 92 93 94 95 96 97 98 99
}

const char *get_system_type(void)
{
	return "Netlogic XLP Series";
}

void __init prom_free_prom_memory(void)
{
	/* Nothing yet */
}

void xlp_mmu_init(void)
{
100
	/* enable extended TLB and Large Fixed TLB */
101
	write_c0_config6(read_c0_config6() | 0x24);
102 103

	/* set page mask of Fixed TLB in config7 */
104 105 106 107
	write_c0_config7(PM_DEFAULT_MASK >>
		(13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
}

108 109 110 111
void nlm_percpu_init(int hwcpuid)
{
}

112 113
void __init prom_init(void)
{
114 115
	void *reset_vec;

116
	nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE);
117
	nlm_init_boot_cpu();
118
	xlp_mmu_init();
119
	nlm_node_init(0);
120
	xlp_dt_init((void *)(long)fw_arg0);
121

122 123
	/* Update reset entry point with CPU init code */
	reset_vec = (void *)CKSEG1ADDR(RESET_VEC_PHYS);
124
	memset(reset_vec, 0, RESET_VEC_SIZE);
125 126 127
	memcpy(reset_vec, (void *)nlm_reset_entry,
			(nlm_reset_entry_end - nlm_reset_entry));

128
#ifdef CONFIG_SMP
129 130
	cpumask_setall(&nlm_cpumask);
	nlm_wakeup_secondary_cpus();
131 132 133 134

	/* update TLB size after waking up threads */
	current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;

135 136 137
	register_smp_ops(&nlm_smp_ops);
#endif
}