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65040e22 J |
1 | /* |
2 | * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights | |
3 | * reserved. | |
4 | * | |
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 | |
9 | * license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * | |
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 | |
20 | * distribution. | |
21 | * | |
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, | |
30 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
31 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | |
32 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
33 | */ | |
34 | ||
35 | #include <linux/kernel.h> | |
36 | #include <linux/serial_8250.h> | |
37 | #include <linux/pm.h> | |
1f8a9ef1 | 38 | #include <linux/bootmem.h> |
65040e22 J |
39 | |
40 | #include <asm/reboot.h> | |
41 | #include <asm/time.h> | |
42 | #include <asm/bootinfo.h> | |
43 | ||
44 | #include <linux/of_fdt.h> | |
fcf9b4de GR |
45 | #include <linux/of_platform.h> |
46 | #include <linux/of_device.h> | |
65040e22 J |
47 | |
48 | #include <asm/netlogic/haldefs.h> | |
49 | #include <asm/netlogic/common.h> | |
50 | ||
51 | #include <asm/netlogic/xlp-hal/iomap.h> | |
52 | #include <asm/netlogic/xlp-hal/xlp.h> | |
53 | #include <asm/netlogic/xlp-hal/sys.h> | |
54 | ||
55 | unsigned long nlm_common_ebase = 0x0; | |
56 | ||
66d29985 | 57 | /* default to uniprocessor */ |
2a37b1ae J |
58 | uint32_t nlm_coremask = 1; |
59 | cpumask_t nlm_cpumask = CPU_MASK_CPU0; | |
66d29985 | 60 | int nlm_threads_per_core = 1; |
2f6528e1 | 61 | extern u32 __dtb_start[]; |
66d29985 | 62 | |
65040e22 J |
63 | static void nlm_linux_exit(void) |
64 | { | |
65 | nlm_write_sys_reg(nlm_sys_base, SYS_CHIP_RESET, 1); | |
66 | for ( ; ; ) | |
67 | cpu_wait(); | |
68 | } | |
69 | ||
70 | void __init plat_mem_setup(void) | |
71 | { | |
e83fc6be J |
72 | void *fdtp; |
73 | ||
65040e22 J |
74 | panic_timeout = 5; |
75 | _machine_restart = (void (*)(char *))nlm_linux_exit; | |
76 | _machine_halt = nlm_linux_exit; | |
77 | pm_power_off = nlm_linux_exit; | |
e83fc6be J |
78 | |
79 | /* | |
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. | |
83 | */ | |
84 | fdtp = (void *)(long)fw_arg0; | |
85 | if (!fdtp) | |
86 | fdtp = __dtb_start; | |
87 | fdtp = phys_to_virt(__pa(fdtp)); | |
88 | early_init_devtree(fdtp); | |
65040e22 J |
89 | } |
90 | ||
91 | const char *get_system_type(void) | |
92 | { | |
93 | return "Netlogic XLP Series"; | |
94 | } | |
95 | ||
96 | void __init prom_free_prom_memory(void) | |
97 | { | |
98 | /* Nothing yet */ | |
99 | } | |
100 | ||
101 | void xlp_mmu_init(void) | |
102 | { | |
b876c1a0 | 103 | /* enable extended TLB and Large Fixed TLB */ |
65040e22 | 104 | write_c0_config6(read_c0_config6() | 0x24); |
b876c1a0 J |
105 | |
106 | /* set page mask of Fixed TLB in config7 */ | |
65040e22 J |
107 | write_c0_config7(PM_DEFAULT_MASK >> |
108 | (13 + (ffz(PM_DEFAULT_MASK >> 13) / 2))); | |
109 | } | |
110 | ||
111 | void __init prom_init(void) | |
112 | { | |
65040e22 J |
113 | xlp_mmu_init(); |
114 | nlm_hal_init(); | |
2f6528e1 | 115 | |
65040e22 | 116 | nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1)); |
e83fc6be | 117 | |
65040e22 | 118 | #ifdef CONFIG_SMP |
2a37b1ae J |
119 | cpumask_setall(&nlm_cpumask); |
120 | nlm_wakeup_secondary_cpus(); | |
b876c1a0 J |
121 | |
122 | /* update TLB size after waking up threads */ | |
123 | current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1; | |
124 | ||
65040e22 J |
125 | register_smp_ops(&nlm_smp_ops); |
126 | #endif | |
127 | } | |
fcf9b4de | 128 | |
1f8a9ef1 J |
129 | void __init device_tree_init(void) |
130 | { | |
131 | unsigned long base, size; | |
132 | ||
133 | if (!initial_boot_params) | |
134 | return; | |
135 | ||
136 | base = virt_to_phys((void *)initial_boot_params); | |
137 | size = be32_to_cpu(initial_boot_params->totalsize); | |
138 | ||
139 | /* Before we do anything, lets reserve the dt blob */ | |
140 | reserve_bootmem(base, size, BOOTMEM_DEFAULT); | |
141 | ||
142 | unflatten_device_tree(); | |
143 | ||
144 | /* free the space reserved for the dt blob */ | |
145 | free_bootmem(base, size); | |
146 | } | |
147 | ||
fcf9b4de GR |
148 | static struct of_device_id __initdata xlp_ids[] = { |
149 | { .compatible = "simple-bus", }, | |
150 | {}, | |
151 | }; | |
152 | ||
153 | int __init xlp8xx_ds_publish_devices(void) | |
154 | { | |
155 | if (!of_have_populated_dt()) | |
156 | return 0; | |
157 | return of_platform_bus_probe(NULL, xlp_ids, NULL); | |
158 | } | |
159 | ||
160 | device_initcall(xlp8xx_ds_publish_devices); |