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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> | |
38 | ||
39 | #include <asm/reboot.h> | |
40 | #include <asm/time.h> | |
41 | #include <asm/bootinfo.h> | |
42 | ||
43 | #include <linux/of_fdt.h> | |
44 | ||
45 | #include <asm/netlogic/haldefs.h> | |
46 | #include <asm/netlogic/common.h> | |
47 | ||
48 | #include <asm/netlogic/xlp-hal/iomap.h> | |
49 | #include <asm/netlogic/xlp-hal/xlp.h> | |
50 | #include <asm/netlogic/xlp-hal/sys.h> | |
51 | ||
52 | unsigned long nlm_common_ebase = 0x0; | |
53 | ||
66d29985 J |
54 | /* default to uniprocessor */ |
55 | uint32_t nlm_coremask = 1, nlm_cpumask = 1; | |
56 | int nlm_threads_per_core = 1; | |
57 | ||
65040e22 J |
58 | static void nlm_linux_exit(void) |
59 | { | |
60 | nlm_write_sys_reg(nlm_sys_base, SYS_CHIP_RESET, 1); | |
61 | for ( ; ; ) | |
62 | cpu_wait(); | |
63 | } | |
64 | ||
65 | void __init plat_mem_setup(void) | |
66 | { | |
67 | panic_timeout = 5; | |
68 | _machine_restart = (void (*)(char *))nlm_linux_exit; | |
69 | _machine_halt = nlm_linux_exit; | |
70 | pm_power_off = nlm_linux_exit; | |
71 | } | |
72 | ||
73 | const char *get_system_type(void) | |
74 | { | |
75 | return "Netlogic XLP Series"; | |
76 | } | |
77 | ||
78 | void __init prom_free_prom_memory(void) | |
79 | { | |
80 | /* Nothing yet */ | |
81 | } | |
82 | ||
83 | void xlp_mmu_init(void) | |
84 | { | |
b876c1a0 | 85 | /* enable extended TLB and Large Fixed TLB */ |
65040e22 | 86 | write_c0_config6(read_c0_config6() | 0x24); |
b876c1a0 J |
87 | |
88 | /* set page mask of Fixed TLB in config7 */ | |
65040e22 J |
89 | write_c0_config7(PM_DEFAULT_MASK >> |
90 | (13 + (ffz(PM_DEFAULT_MASK >> 13) / 2))); | |
91 | } | |
92 | ||
93 | void __init prom_init(void) | |
94 | { | |
95 | void *fdtp; | |
96 | ||
97 | fdtp = (void *)(long)fw_arg0; | |
98 | xlp_mmu_init(); | |
99 | nlm_hal_init(); | |
100 | early_init_devtree(fdtp); | |
101 | ||
102 | nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1)); | |
103 | #ifdef CONFIG_SMP | |
104 | nlm_wakeup_secondary_cpus(0xffffffff); | |
b876c1a0 J |
105 | |
106 | /* update TLB size after waking up threads */ | |
107 | current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1; | |
108 | ||
65040e22 J |
109 | register_smp_ops(&nlm_smp_ops); |
110 | #endif | |
111 | } |