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5c642506 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> | |
38 | ||
bdc92d74 | 39 | #include <asm/idle.h> |
5c642506 J |
40 | #include <asm/reboot.h> |
41 | #include <asm/time.h> | |
42 | #include <asm/bootinfo.h> | |
5c642506 J |
43 | |
44 | #include <asm/netlogic/interrupt.h> | |
45 | #include <asm/netlogic/psb-bootinfo.h> | |
0c965407 J |
46 | #include <asm/netlogic/haldefs.h> |
47 | #include <asm/netlogic/common.h> | |
5c642506 J |
48 | |
49 | #include <asm/netlogic/xlr/xlr.h> | |
50 | #include <asm/netlogic/xlr/iomap.h> | |
51 | #include <asm/netlogic/xlr/pic.h> | |
52 | #include <asm/netlogic/xlr/gpio.h> | |
ed21cfe2 | 53 | #include <asm/netlogic/xlr/fmn.h> |
5c642506 | 54 | |
0c965407 | 55 | uint64_t nlm_io_base = DEFAULT_NETLOGIC_IO_BASE; |
5c642506 J |
56 | struct psb_info nlm_prom_info; |
57 | ||
66d29985 | 58 | /* default to uniprocessor */ |
77ae798f J |
59 | unsigned int nlm_threads_per_core = 1; |
60 | struct nlm_soc_info nlm_nodes[NLM_NR_NODES]; | |
2a37b1ae | 61 | cpumask_t nlm_cpumask = CPU_MASK_CPU0; |
66d29985 | 62 | |
5c642506 J |
63 | static void nlm_linux_exit(void) |
64 | { | |
0c965407 | 65 | uint64_t gpiobase; |
5c642506 | 66 | |
0c965407 | 67 | gpiobase = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET); |
5c642506 | 68 | /* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */ |
c5a48ff8 | 69 | nlm_write_reg(gpiobase, GPIO_SWRESET_REG, 1); |
5c642506 J |
70 | for ( ; ; ) |
71 | cpu_wait(); | |
72 | } | |
73 | ||
74 | void __init plat_mem_setup(void) | |
75 | { | |
5c642506 J |
76 | _machine_restart = (void (*)(char *))nlm_linux_exit; |
77 | _machine_halt = nlm_linux_exit; | |
78 | pm_power_off = nlm_linux_exit; | |
79 | } | |
80 | ||
81 | const char *get_system_type(void) | |
82 | { | |
83 | return "Netlogic XLR/XLS Series"; | |
84 | } | |
85 | ||
0c965407 J |
86 | unsigned int nlm_get_cpu_frequency(void) |
87 | { | |
88 | return (unsigned int)nlm_prom_info.cpu_frequency; | |
89 | } | |
90 | ||
5c642506 J |
91 | void __init prom_free_prom_memory(void) |
92 | { | |
93 | /* Nothing yet */ | |
94 | } | |
95 | ||
ed21cfe2 GR |
96 | void nlm_percpu_init(int hwcpuid) |
97 | { | |
98 | if (hwcpuid % 4 == 0) | |
99 | xlr_percpu_fmn_init(); | |
100 | } | |
101 | ||
a74e3353 | 102 | static void __init build_arcs_cmdline(int *argv) |
5c642506 J |
103 | { |
104 | int i, remain, len; | |
105 | char *arg; | |
106 | ||
107 | remain = sizeof(arcs_cmdline) - 1; | |
108 | arcs_cmdline[0] = '\0'; | |
109 | for (i = 0; argv[i] != 0; i++) { | |
110 | arg = (char *)(long)argv[i]; | |
111 | len = strlen(arg); | |
112 | if (len + 1 > remain) | |
113 | break; | |
114 | strcat(arcs_cmdline, arg); | |
115 | strcat(arcs_cmdline, " "); | |
116 | remain -= len + 1; | |
117 | } | |
118 | ||
119 | /* Add the default options here */ | |
120 | if ((strstr(arcs_cmdline, "console=")) == NULL) { | |
121 | arg = "console=ttyS0,38400 "; | |
122 | len = strlen(arg); | |
123 | if (len > remain) | |
124 | goto fail; | |
125 | strcat(arcs_cmdline, arg); | |
126 | remain -= len; | |
127 | } | |
128 | #ifdef CONFIG_BLK_DEV_INITRD | |
129 | if ((strstr(arcs_cmdline, "rdinit=")) == NULL) { | |
130 | arg = "rdinit=/sbin/init "; | |
131 | len = strlen(arg); | |
132 | if (len > remain) | |
133 | goto fail; | |
134 | strcat(arcs_cmdline, arg); | |
135 | remain -= len; | |
136 | } | |
137 | #endif | |
138 | return; | |
139 | fail: | |
140 | panic("Cannot add %s, command line too big!", arg); | |
141 | } | |
142 | ||
143 | static void prom_add_memory(void) | |
144 | { | |
145 | struct nlm_boot_mem_map *bootm; | |
146 | u64 start, size; | |
70342287 | 147 | u64 pref_backup = 512; /* avoid pref walking beyond end */ |
5c642506 J |
148 | int i; |
149 | ||
150 | bootm = (void *)(long)nlm_prom_info.psb_mem_map; | |
151 | for (i = 0; i < bootm->nr_map; i++) { | |
152 | if (bootm->map[i].type != BOOT_MEM_RAM) | |
153 | continue; | |
154 | start = bootm->map[i].addr; | |
155 | size = bootm->map[i].size; | |
156 | ||
157 | /* Work around for using bootloader mem */ | |
158 | if (i == 0 && start == 0 && size == 0x0c000000) | |
159 | size = 0x0ff00000; | |
160 | ||
161 | add_memory_region(start, size - pref_backup, BOOT_MEM_RAM); | |
162 | } | |
163 | } | |
164 | ||
77ae798f J |
165 | static void nlm_init_node(void) |
166 | { | |
167 | struct nlm_soc_info *nodep; | |
168 | ||
169 | nodep = nlm_current_node(); | |
170 | nodep->picbase = nlm_mmio_base(NETLOGIC_IO_PIC_OFFSET); | |
37af2f30 | 171 | nodep->ebase = read_c0_ebase() & MIPS_EBASE_BASE; |
77ae798f J |
172 | spin_lock_init(&nodep->piclock); |
173 | } | |
174 | ||
5c642506 J |
175 | void __init prom_init(void) |
176 | { | |
26f5ae86 | 177 | int *argv, *envp; /* passed as 32 bit ptrs */ |
5c642506 | 178 | struct psb_info *prom_infop; |
571886b2 | 179 | void *reset_vec; |
26f5ae86 J |
180 | #ifdef CONFIG_SMP |
181 | int i; | |
182 | #endif | |
5c642506 J |
183 | |
184 | /* truncate to 32 bit and sign extend all args */ | |
185 | argv = (int *)(long)(int)fw_arg1; | |
186 | envp = (int *)(long)(int)fw_arg2; | |
187 | prom_infop = (struct psb_info *)(long)(int)fw_arg3; | |
188 | ||
189 | nlm_prom_info = *prom_infop; | |
77ae798f | 190 | nlm_init_node(); |
5c642506 | 191 | |
571886b2 J |
192 | /* Update reset entry point with CPU init code */ |
193 | reset_vec = (void *)CKSEG1ADDR(RESET_VEC_PHYS); | |
919f9abb | 194 | memset(reset_vec, 0, RESET_VEC_SIZE); |
571886b2 J |
195 | memcpy(reset_vec, (void *)nlm_reset_entry, |
196 | (nlm_reset_entry_end - nlm_reset_entry)); | |
197 | ||
5c642506 | 198 | build_arcs_cmdline(argv); |
5c642506 J |
199 | prom_add_memory(); |
200 | ||
201 | #ifdef CONFIG_SMP | |
2a37b1ae J |
202 | for (i = 0; i < 32; i++) |
203 | if (nlm_prom_info.online_cpu_map & (1 << i)) | |
204 | cpumask_set_cpu(i, &nlm_cpumask); | |
205 | nlm_wakeup_secondary_cpus(); | |
5c642506 J |
206 | register_smp_ops(&nlm_smp_ops); |
207 | #endif | |
ed21cfe2 GR |
208 | xlr_board_info_setup(); |
209 | xlr_percpu_fmn_init(); | |
5c642506 | 210 | } |