1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/*
* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
* reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the NetLogic
* license below:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include <linux/of_fdt.h>
#include <linux/memblock.h>
#include <asm/idle.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/bootinfo.h>
#include <asm/netlogic/haldefs.h>
#include <asm/netlogic/common.h>
#include <asm/netlogic/xlp-hal/iomap.h>
#include <asm/netlogic/xlp-hal/xlp.h>
#include <asm/netlogic/xlp-hal/sys.h>
uint64_t nlm_io_base;
struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
cpumask_t nlm_cpumask = CPU_MASK_CPU0;
unsigned int nlm_threads_per_core;
static void nlm_linux_exit(void)
{
uint64_t sysbase = nlm_get_node(0)->sysbase;
if (cpu_is_xlp9xx())
nlm_write_sys_reg(sysbase, SYS_9XX_CHIP_RESET, 1);
else
nlm_write_sys_reg(sysbase, SYS_CHIP_RESET, 1);
for ( ; ; )
cpu_wait();
}
static void nlm_fixup_mem(void)
{
const int pref_backup = 512;
struct memblock_region *mem;
for_each_mem_region(mem) {
memblock_remove(mem->base + mem->size - pref_backup,
pref_backup);
}
}
static void __init xlp_init_mem_from_bars(void)
{
uint64_t map[16];
int i, n;
n = nlm_get_dram_map(-1, map, ARRAY_SIZE(map)); /* -1 : all nodes */
for (i = 0; i < n; i += 2) {
/* exclude 0x1000_0000-0x2000_0000, u-boot device */
if (map[i] <= 0x10000000 && map[i+1] > 0x10000000)
map[i+1] = 0x10000000;
if (map[i] > 0x10000000 && map[i] < 0x20000000)
map[i] = 0x20000000;
memblock_add(map[i], map[i+1] - map[i]);
}
}
void __init plat_mem_setup(void)
{
#ifdef CONFIG_SMP
nlm_wakeup_secondary_cpus();
/* update TLB size after waking up threads */
current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
register_smp_ops(&nlm_smp_ops);
#endif
_machine_restart = (void (*)(char *))nlm_linux_exit;
_machine_halt = nlm_linux_exit;
pm_power_off = nlm_linux_exit;
/* memory and bootargs from DT */
xlp_early_init_devtree();
if (memblock_end_of_DRAM() == 0) {
pr_info("Using DRAM BARs for memory map.\n");
xlp_init_mem_from_bars();
}
/* Calculate and setup wired entries for mapped kernel */
nlm_fixup_mem();
}
const char *get_system_type(void)
{
switch (read_c0_prid() & PRID_IMP_MASK) {
case PRID_IMP_NETLOGIC_XLP9XX:
case PRID_IMP_NETLOGIC_XLP5XX:
case PRID_IMP_NETLOGIC_XLP2XX:
return "Broadcom XLPII Series";
default:
return "Netlogic XLP Series";
}
}
void __init prom_free_prom_memory(void)
{
/* Nothing yet */
}
void xlp_mmu_init(void)
{
u32 conf4;
if (cpu_is_xlpii()) {
/* XLPII series has extended pagesize in config 4 */
conf4 = read_c0_config4() & ~0x1f00u;
write_c0_config4(conf4 | ((PAGE_SHIFT - 10) / 2 << 8));
} else {
/* enable extended TLB and Large Fixed TLB */
write_c0_config6(read_c0_config6() | 0x24);
/* set page mask of extended Fixed TLB in config7 */
write_c0_config7(PM_DEFAULT_MASK >>
(13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
}
}
void nlm_percpu_init(int hwcpuid)
{
}
void __init prom_init(void)
{
void *reset_vec;
nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE);
nlm_init_boot_cpu();
xlp_mmu_init();
nlm_node_init(0);
xlp_dt_init((void *)(long)fw_arg0);
/* Update reset entry point with CPU init code */
reset_vec = (void *)CKSEG1ADDR(RESET_VEC_PHYS);
memset(reset_vec, 0, RESET_VEC_SIZE);
memcpy(reset_vec, (void *)nlm_reset_entry,
(nlm_reset_entry_end - nlm_reset_entry));
#ifdef CONFIG_SMP
cpumask_setall(&nlm_cpumask);
#endif
}
|
