2 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the NetLogic
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
22 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include <linux/kernel.h>
36 #include <linux/serial_8250.h>
38 #include <linux/bootmem.h>
40 #include <asm/reboot.h>
42 #include <asm/bootinfo.h>
44 #include <linux/of_fdt.h>
45 #include <linux/of_platform.h>
46 #include <linux/of_device.h>
48 #include <asm/netlogic/haldefs.h>
49 #include <asm/netlogic/common.h>
51 #include <asm/netlogic/xlp-hal/iomap.h>
52 #include <asm/netlogic/xlp-hal/xlp.h>
53 #include <asm/netlogic/xlp-hal/sys.h>
56 struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
57 cpumask_t nlm_cpumask = CPU_MASK_CPU0;
58 unsigned int nlm_threads_per_core;
59 extern u32 __dtb_xlp_evp_begin[], __dtb_xlp_svp_begin[], __dtb_start[];
61 static void nlm_linux_exit(void)
63 uint64_t sysbase = nlm_get_node(0)->sysbase;
65 nlm_write_sys_reg(sysbase, SYS_CHIP_RESET, 1);
70 void __init plat_mem_setup(void)
75 _machine_restart = (void (*)(char *))nlm_linux_exit;
76 _machine_halt = nlm_linux_exit;
77 pm_power_off = nlm_linux_exit;
80 * If no FDT pointer is passed in, use the built-in FDT.
81 * device_tree_init() does not handle CKSEG0 pointers in
82 * 64-bit, so convert pointer.
84 fdtp = (void *)(long)fw_arg0;
86 switch (current_cpu_data.processor_id & 0xff00) {
87 #ifdef CONFIG_DT_XLP_SVP
88 case PRID_IMP_NETLOGIC_XLP3XX:
89 fdtp = __dtb_xlp_svp_begin;
92 #ifdef CONFIG_DT_XLP_EVP
93 case PRID_IMP_NETLOGIC_XLP8XX:
94 fdtp = __dtb_xlp_evp_begin;
98 /* Pick a built-in if any, and hope for the best */
103 fdtp = phys_to_virt(__pa(fdtp));
104 early_init_devtree(fdtp);
107 const char *get_system_type(void)
109 return "Netlogic XLP Series";
112 void __init prom_free_prom_memory(void)
117 void xlp_mmu_init(void)
119 /* enable extended TLB and Large Fixed TLB */
120 write_c0_config6(read_c0_config6() | 0x24);
122 /* set page mask of Fixed TLB in config7 */
123 write_c0_config7(PM_DEFAULT_MASK >>
124 (13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
127 void nlm_percpu_init(int hwcpuid)
131 void __init prom_init(void)
133 nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE);
138 cpumask_setall(&nlm_cpumask);
139 nlm_wakeup_secondary_cpus();
141 /* update TLB size after waking up threads */
142 current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
144 register_smp_ops(&nlm_smp_ops);
148 void __init device_tree_init(void)
150 unsigned long base, size;
152 if (!initial_boot_params)
155 base = virt_to_phys((void *)initial_boot_params);
156 size = be32_to_cpu(initial_boot_params->totalsize);
158 /* Before we do anything, lets reserve the dt blob */
159 reserve_bootmem(base, size, BOOTMEM_DEFAULT);
161 unflatten_device_tree();
163 /* free the space reserved for the dt blob */
164 free_bootmem(base, size);
167 static struct of_device_id __initdata xlp_ids[] = {
168 { .compatible = "simple-bus", },
172 int __init xlp8xx_ds_publish_devices(void)
174 if (!of_have_populated_dt())
176 return of_platform_bus_probe(NULL, xlp_ids, NULL);
179 device_initcall(xlp8xx_ds_publish_devices);