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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 | ||
39 | #include <asm/reboot.h> | |
40 | #include <asm/time.h> | |
41 | #include <asm/bootinfo.h> | |
5c642506 J |
42 | |
43 | #include <asm/netlogic/interrupt.h> | |
44 | #include <asm/netlogic/psb-bootinfo.h> | |
0c965407 J |
45 | #include <asm/netlogic/haldefs.h> |
46 | #include <asm/netlogic/common.h> | |
5c642506 J |
47 | |
48 | #include <asm/netlogic/xlr/xlr.h> | |
49 | #include <asm/netlogic/xlr/iomap.h> | |
50 | #include <asm/netlogic/xlr/pic.h> | |
51 | #include <asm/netlogic/xlr/gpio.h> | |
ed21cfe2 | 52 | #include <asm/netlogic/xlr/fmn.h> |
5c642506 | 53 | |
0c965407 | 54 | uint64_t nlm_io_base = DEFAULT_NETLOGIC_IO_BASE; |
5c642506 J |
55 | struct psb_info nlm_prom_info; |
56 | ||
66d29985 | 57 | /* default to uniprocessor */ |
77ae798f J |
58 | unsigned int nlm_threads_per_core = 1; |
59 | struct nlm_soc_info nlm_nodes[NLM_NR_NODES]; | |
2a37b1ae | 60 | cpumask_t nlm_cpumask = CPU_MASK_CPU0; |
66d29985 | 61 | |
a74e3353 | 62 | static void __init nlm_early_serial_setup(void) |
5c642506 J |
63 | { |
64 | struct uart_port s; | |
0c965407 | 65 | unsigned long uart_base; |
5c642506 | 66 | |
0c965407 | 67 | uart_base = (unsigned long)nlm_mmio_base(NETLOGIC_IO_UART_0_OFFSET); |
5c642506 J |
68 | memset(&s, 0, sizeof(s)); |
69 | s.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST; | |
70 | s.iotype = UPIO_MEM32; | |
71 | s.regshift = 2; | |
72 | s.irq = PIC_UART_0_IRQ; | |
73 | s.uartclk = PIC_CLKS_PER_SEC; | |
74 | s.serial_in = nlm_xlr_uart_in; | |
75 | s.serial_out = nlm_xlr_uart_out; | |
0c965407 | 76 | s.mapbase = uart_base; |
5c642506 J |
77 | s.membase = (unsigned char __iomem *)uart_base; |
78 | early_serial_setup(&s); | |
79 | } | |
80 | ||
81 | static void nlm_linux_exit(void) | |
82 | { | |
0c965407 | 83 | uint64_t gpiobase; |
5c642506 | 84 | |
0c965407 | 85 | gpiobase = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET); |
5c642506 | 86 | /* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */ |
c5a48ff8 | 87 | nlm_write_reg(gpiobase, GPIO_SWRESET_REG, 1); |
5c642506 J |
88 | for ( ; ; ) |
89 | cpu_wait(); | |
90 | } | |
91 | ||
92 | void __init plat_mem_setup(void) | |
93 | { | |
94 | panic_timeout = 5; | |
95 | _machine_restart = (void (*)(char *))nlm_linux_exit; | |
96 | _machine_halt = nlm_linux_exit; | |
97 | pm_power_off = nlm_linux_exit; | |
98 | } | |
99 | ||
100 | const char *get_system_type(void) | |
101 | { | |
102 | return "Netlogic XLR/XLS Series"; | |
103 | } | |
104 | ||
0c965407 J |
105 | unsigned int nlm_get_cpu_frequency(void) |
106 | { | |
107 | return (unsigned int)nlm_prom_info.cpu_frequency; | |
108 | } | |
109 | ||
5c642506 J |
110 | void __init prom_free_prom_memory(void) |
111 | { | |
112 | /* Nothing yet */ | |
113 | } | |
114 | ||
ed21cfe2 GR |
115 | void nlm_percpu_init(int hwcpuid) |
116 | { | |
117 | if (hwcpuid % 4 == 0) | |
118 | xlr_percpu_fmn_init(); | |
119 | } | |
120 | ||
a74e3353 | 121 | static void __init build_arcs_cmdline(int *argv) |
5c642506 J |
122 | { |
123 | int i, remain, len; | |
124 | char *arg; | |
125 | ||
126 | remain = sizeof(arcs_cmdline) - 1; | |
127 | arcs_cmdline[0] = '\0'; | |
128 | for (i = 0; argv[i] != 0; i++) { | |
129 | arg = (char *)(long)argv[i]; | |
130 | len = strlen(arg); | |
131 | if (len + 1 > remain) | |
132 | break; | |
133 | strcat(arcs_cmdline, arg); | |
134 | strcat(arcs_cmdline, " "); | |
135 | remain -= len + 1; | |
136 | } | |
137 | ||
138 | /* Add the default options here */ | |
139 | if ((strstr(arcs_cmdline, "console=")) == NULL) { | |
140 | arg = "console=ttyS0,38400 "; | |
141 | len = strlen(arg); | |
142 | if (len > remain) | |
143 | goto fail; | |
144 | strcat(arcs_cmdline, arg); | |
145 | remain -= len; | |
146 | } | |
147 | #ifdef CONFIG_BLK_DEV_INITRD | |
148 | if ((strstr(arcs_cmdline, "rdinit=")) == NULL) { | |
149 | arg = "rdinit=/sbin/init "; | |
150 | len = strlen(arg); | |
151 | if (len > remain) | |
152 | goto fail; | |
153 | strcat(arcs_cmdline, arg); | |
154 | remain -= len; | |
155 | } | |
156 | #endif | |
157 | return; | |
158 | fail: | |
159 | panic("Cannot add %s, command line too big!", arg); | |
160 | } | |
161 | ||
162 | static void prom_add_memory(void) | |
163 | { | |
164 | struct nlm_boot_mem_map *bootm; | |
165 | u64 start, size; | |
166 | u64 pref_backup = 512; /* avoid pref walking beyond end */ | |
167 | int i; | |
168 | ||
169 | bootm = (void *)(long)nlm_prom_info.psb_mem_map; | |
170 | for (i = 0; i < bootm->nr_map; i++) { | |
171 | if (bootm->map[i].type != BOOT_MEM_RAM) | |
172 | continue; | |
173 | start = bootm->map[i].addr; | |
174 | size = bootm->map[i].size; | |
175 | ||
176 | /* Work around for using bootloader mem */ | |
177 | if (i == 0 && start == 0 && size == 0x0c000000) | |
178 | size = 0x0ff00000; | |
179 | ||
180 | add_memory_region(start, size - pref_backup, BOOT_MEM_RAM); | |
181 | } | |
182 | } | |
183 | ||
77ae798f J |
184 | static void nlm_init_node(void) |
185 | { | |
186 | struct nlm_soc_info *nodep; | |
187 | ||
188 | nodep = nlm_current_node(); | |
189 | nodep->picbase = nlm_mmio_base(NETLOGIC_IO_PIC_OFFSET); | |
190 | nodep->ebase = read_c0_ebase() & (~((1 << 12) - 1)); | |
191 | spin_lock_init(&nodep->piclock); | |
192 | } | |
193 | ||
5c642506 J |
194 | void __init prom_init(void) |
195 | { | |
26f5ae86 | 196 | int *argv, *envp; /* passed as 32 bit ptrs */ |
5c642506 | 197 | struct psb_info *prom_infop; |
26f5ae86 J |
198 | #ifdef CONFIG_SMP |
199 | int i; | |
200 | #endif | |
5c642506 J |
201 | |
202 | /* truncate to 32 bit and sign extend all args */ | |
203 | argv = (int *)(long)(int)fw_arg1; | |
204 | envp = (int *)(long)(int)fw_arg2; | |
205 | prom_infop = (struct psb_info *)(long)(int)fw_arg3; | |
206 | ||
207 | nlm_prom_info = *prom_infop; | |
77ae798f | 208 | nlm_init_node(); |
5c642506 J |
209 | |
210 | nlm_early_serial_setup(); | |
211 | build_arcs_cmdline(argv); | |
5c642506 J |
212 | prom_add_memory(); |
213 | ||
214 | #ifdef CONFIG_SMP | |
2a37b1ae J |
215 | for (i = 0; i < 32; i++) |
216 | if (nlm_prom_info.online_cpu_map & (1 << i)) | |
217 | cpumask_set_cpu(i, &nlm_cpumask); | |
218 | nlm_wakeup_secondary_cpus(); | |
5c642506 J |
219 | register_smp_ops(&nlm_smp_ops); |
220 | #endif | |
ed21cfe2 GR |
221 | xlr_board_info_setup(); |
222 | xlr_percpu_fmn_init(); | |
5c642506 | 223 | } |