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
54 /* default to uniprocessor */
55 uint32_t nlm_coremask = 1, nlm_cpumask = 1;
56 int nlm_threads_per_core = 1;
57
nlm_linux_exit(void)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
plat_mem_setup(void)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
get_system_type(void)73 const char *get_system_type(void)
74 {
75 return "Netlogic XLP Series";
76 }
77
prom_free_prom_memory(void)78 void __init prom_free_prom_memory(void)
79 {
80 /* Nothing yet */
81 }
82
xlp_mmu_init(void)83 void xlp_mmu_init(void)
84 {
85 write_c0_config6(read_c0_config6() | 0x24);
86 current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
87 write_c0_config7(PM_DEFAULT_MASK >>
88 (13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
89 }
90
prom_init(void)91 void __init prom_init(void)
92 {
93 void *fdtp;
94
95 fdtp = (void *)(long)fw_arg0;
96 xlp_mmu_init();
97 nlm_hal_init();
98 early_init_devtree(fdtp);
99
100 nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1));
101 #ifdef CONFIG_SMP
102 nlm_wakeup_secondary_cpus(0xffffffff);
103 register_smp_ops(&nlm_smp_ops);
104 #endif
105 }
106