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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/of_fdt.h>
#include <linux/memblock.h>
#include <asm/idle.h>
#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>
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;
static void nlm_linux_exit(void)
{
uint64_t sysbase = nlm_get_node(0)->sysbase;
if (cpu_is_xlp9xx())
nlm_write_sys_reg(sysbase, SYS_9XX_CHIP_RESET, 1);
else
nlm_write_sys_reg(sysbase, SYS_CHIP_RESET, 1);
for ( ; ; )
cpu_wait();
}
static void nlm_fixup_mem(void)
{
const int pref_backup = 512;
struct memblock_region *mem;
for_each_mem_region(mem) {
memblock_remove(mem->base + mem->size - pref_backup,
pref_backup);
}
}
static void __init xlp_init_mem_from_bars(void)
{
uint64_t map[16];
int i, n;
n = nlm_get_dram_map(-1, map, ARRAY_SIZE(map)); /* -1 : all nodes */
for (i = 0; i < n; i += 2) {
/* exclude 0x1000_0000-0x2000_0000, u-boot device */
if (map[i] <= 0x10000000 && map[i+1] > 0x10000000)
map[i+1] = 0x10000000;
if (map[i] > 0x10000000 && map[i] < 0x20000000)
map[i] = 0x20000000;
memblock_add(map[i], map[i+1] - map[i]);
}
}
void __init plat_mem_setup(void)
{
#ifdef CONFIG_SMP
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
_machine_restart = (void (*)(char *))nlm_linux_exit;
_machine_halt = nlm_linux_exit;
pm_power_off = nlm_linux_exit;
/* memory and bootargs from DT */
xlp_early_init_devtree();
if (memblock_end_of_DRAM() == 0) {
pr_info("Using DRAM BARs for memory map.\n");
xlp_init_mem_from_bars();
}
/* Calculate and setup wired entries for mapped kernel */
nlm_fixup_mem();
}
const char *get_system_type(void)
{
switch (read_c0_prid() & PRID_IMP_MASK) {
case PRID_IMP_NETLOGIC_XLP9XX:
case PRID_IMP_NETLOGIC_XLP5XX:
case PRID_IMP_NETLOGIC_XLP2XX:
return "Broadcom XLPII Series";
default:
return "Netlogic XLP Series";
}
}
void xlp_mmu_init(void)
{
u32 conf4;
if (cpu_is_xlpii()) {
/* XLPII series has extended pagesize in config 4 */
conf4 = read_c0_config4() & ~0x1f00u;
write_c0_config4(conf4 | ((PAGE_SHIFT - 10) / 2 << 8));
} else {
/* enable extended TLB and Large Fixed TLB */
write_c0_config6(read_c0_config6() | 0x24);
/* set page mask of extended Fixed TLB in config7 */
write_c0_config7(PM_DEFAULT_MASK >>
(13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
}
}
void nlm_percpu_init(int hwcpuid)
{
}
void __init prom_init(void)
{
void *reset_vec;
nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE);
nlm_init_boot_cpu();
xlp_mmu_init();
nlm_node_init(0);
xlp_dt_init((void *)(long)fw_arg0);
/* Update reset entry point with CPU init code */
reset_vec = (void *)CKSEG1ADDR(RESET_VEC_PHYS);
memset(reset_vec, 0, RESET_VEC_SIZE);
memcpy(reset_vec, (void *)nlm_reset_entry,
(nlm_reset_entry_end - nlm_reset_entry));
#ifdef CONFIG_SMP
cpumask_setall(&nlm_cpumask);
#endif
}
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