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/*
* 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>
#include <linux/serial_8250.h>
#include <linux/pm.h>
#include <linux/bootmem.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/bootinfo.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <linux/of_device.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>
uint64_t nlm_io_base;
struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
cpumask_t nlm_cpumask = CPU_MASK_CPU0;
unsigned int nlm_threads_per_core;
extern u32 __dtb_start[];
static void nlm_linux_exit(void)
{
uint64_t sysbase = nlm_get_node(0)->sysbase;
nlm_write_sys_reg(sysbase, SYS_CHIP_RESET, 1);
for ( ; ; )
cpu_wait();
}
void __init plat_mem_setup(void)
{
void *fdtp;
panic_timeout = 5;
_machine_restart = (void (*)(char *))nlm_linux_exit;
_machine_halt = nlm_linux_exit;
pm_power_off = nlm_linux_exit;
/*
* If no FDT pointer is passed in, use the built-in FDT.
* device_tree_init() does not handle CKSEG0 pointers in
* 64-bit, so convert pointer.
*/
fdtp = (void *)(long)fw_arg0;
if (!fdtp)
fdtp = __dtb_start;
fdtp = phys_to_virt(__pa(fdtp));
early_init_devtree(fdtp);
}
const char *get_system_type(void)
{
return "Netlogic XLP Series";
}
void __init prom_free_prom_memory(void)
{
/* Nothing yet */
}
void xlp_mmu_init(void)
{
/* enable extended TLB and Large Fixed TLB */
write_c0_config6(read_c0_config6() | 0x24);
/* set page mask of Fixed TLB in config7 */
write_c0_config7(PM_DEFAULT_MASK >>
(13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
}
void __init prom_init(void)
{
nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE);
xlp_mmu_init();
nlm_node_init(0);
#ifdef CONFIG_SMP
cpumask_setall(&nlm_cpumask);
nlm_wakeup_secondary_cpus();
/* update TLB size after waking up threads */
current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
register_smp_ops(&nlm_smp_ops);
#endif
}
void __init device_tree_init(void)
{
unsigned long base, size;
if (!initial_boot_params)
return;
base = virt_to_phys((void *)initial_boot_params);
size = be32_to_cpu(initial_boot_params->totalsize);
/* Before we do anything, lets reserve the dt blob */
reserve_bootmem(base, size, BOOTMEM_DEFAULT);
unflatten_device_tree();
/* free the space reserved for the dt blob */
free_bootmem(base, size);
}
static struct of_device_id __initdata xlp_ids[] = {
{ .compatible = "simple-bus", },
{},
};
int __init xlp8xx_ds_publish_devices(void)
{
if (!of_have_populated_dt())
return 0;
return of_platform_bus_probe(NULL, xlp_ids, NULL);
}
device_initcall(xlp8xx_ds_publish_devices);
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