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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#include <asm/smp-ops.h>
43
44#include <asm/netlogic/interrupt.h>
45#include <asm/netlogic/psb-bootinfo.h>
46
47#include <asm/netlogic/xlr/xlr.h>
48#include <asm/netlogic/xlr/iomap.h>
49#include <asm/netlogic/xlr/pic.h>
50#include <asm/netlogic/xlr/gpio.h>
51
52unsigned long netlogic_io_base = (unsigned long)(DEFAULT_NETLOGIC_IO_BASE);
53unsigned long nlm_common_ebase = 0x0;
54struct psb_info nlm_prom_info;
55
56static void nlm_early_serial_setup(void)
57{
58 struct uart_port s;
59 nlm_reg_t *uart_base;
60
61 uart_base = netlogic_io_mmio(NETLOGIC_IO_UART_0_OFFSET);
62 memset(&s, 0, sizeof(s));
63 s.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
64 s.iotype = UPIO_MEM32;
65 s.regshift = 2;
66 s.irq = PIC_UART_0_IRQ;
67 s.uartclk = PIC_CLKS_PER_SEC;
68 s.serial_in = nlm_xlr_uart_in;
69 s.serial_out = nlm_xlr_uart_out;
70 s.mapbase = (unsigned long)uart_base;
71 s.membase = (unsigned char __iomem *)uart_base;
72 early_serial_setup(&s);
73}
74
75static void nlm_linux_exit(void)
76{
77 nlm_reg_t *mmio;
78
79 mmio = netlogic_io_mmio(NETLOGIC_IO_GPIO_OFFSET);
80 /* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */
81 netlogic_write_reg(mmio, NETLOGIC_GPIO_SWRESET_REG, 1);
82 for ( ; ; )
83 cpu_wait();
84}
85
86void __init plat_mem_setup(void)
87{
88 panic_timeout = 5;
89 _machine_restart = (void (*)(char *))nlm_linux_exit;
90 _machine_halt = nlm_linux_exit;
91 pm_power_off = nlm_linux_exit;
92}
93
94const char *get_system_type(void)
95{
96 return "Netlogic XLR/XLS Series";
97}
98
99void __init prom_free_prom_memory(void)
100{
101 /* Nothing yet */
102}
103
104static void build_arcs_cmdline(int *argv)
105{
106 int i, remain, len;
107 char *arg;
108
109 remain = sizeof(arcs_cmdline) - 1;
110 arcs_cmdline[0] = '\0';
111 for (i = 0; argv[i] != 0; i++) {
112 arg = (char *)(long)argv[i];
113 len = strlen(arg);
114 if (len + 1 > remain)
115 break;
116 strcat(arcs_cmdline, arg);
117 strcat(arcs_cmdline, " ");
118 remain -= len + 1;
119 }
120
121 /* Add the default options here */
122 if ((strstr(arcs_cmdline, "console=")) == NULL) {
123 arg = "console=ttyS0,38400 ";
124 len = strlen(arg);
125 if (len > remain)
126 goto fail;
127 strcat(arcs_cmdline, arg);
128 remain -= len;
129 }
130#ifdef CONFIG_BLK_DEV_INITRD
131 if ((strstr(arcs_cmdline, "rdinit=")) == NULL) {
132 arg = "rdinit=/sbin/init ";
133 len = strlen(arg);
134 if (len > remain)
135 goto fail;
136 strcat(arcs_cmdline, arg);
137 remain -= len;
138 }
139#endif
140 return;
141fail:
142 panic("Cannot add %s, command line too big!", arg);
143}
144
145static void prom_add_memory(void)
146{
147 struct nlm_boot_mem_map *bootm;
148 u64 start, size;
149 u64 pref_backup = 512; /* avoid pref walking beyond end */
150 int i;
151
152 bootm = (void *)(long)nlm_prom_info.psb_mem_map;
153 for (i = 0; i < bootm->nr_map; i++) {
154 if (bootm->map[i].type != BOOT_MEM_RAM)
155 continue;
156 start = bootm->map[i].addr;
157 size = bootm->map[i].size;
158
159 /* Work around for using bootloader mem */
160 if (i == 0 && start == 0 && size == 0x0c000000)
161 size = 0x0ff00000;
162
163 add_memory_region(start, size - pref_backup, BOOT_MEM_RAM);
164 }
165}
166
167void __init prom_init(void)
168{
169 int *argv, *envp; /* passed as 32 bit ptrs */
170 struct psb_info *prom_infop;
171
172 /* truncate to 32 bit and sign extend all args */
173 argv = (int *)(long)(int)fw_arg1;
174 envp = (int *)(long)(int)fw_arg2;
175 prom_infop = (struct psb_info *)(long)(int)fw_arg3;
176
177 nlm_prom_info = *prom_infop;
178
179 nlm_early_serial_setup();
180 build_arcs_cmdline(argv);
181 nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1));
182 prom_add_memory();
183
184#ifdef CONFIG_SMP
185 nlm_wakeup_secondary_cpus(nlm_prom_info.online_cpu_map);
186 register_smp_ops(&nlm_smp_ops);
187#endif
188}
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/idle.h>
40#include <asm/reboot.h>
41#include <asm/time.h>
42#include <asm/bootinfo.h>
43
44#include <asm/netlogic/interrupt.h>
45#include <asm/netlogic/psb-bootinfo.h>
46#include <asm/netlogic/haldefs.h>
47#include <asm/netlogic/common.h>
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>
53#include <asm/netlogic/xlr/fmn.h>
54
55uint64_t nlm_io_base = DEFAULT_NETLOGIC_IO_BASE;
56struct psb_info nlm_prom_info;
57
58/* default to uniprocessor */
59unsigned int nlm_threads_per_core = 1;
60struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
61cpumask_t nlm_cpumask = CPU_MASK_CPU0;
62
63static void nlm_linux_exit(void)
64{
65 uint64_t gpiobase;
66
67 gpiobase = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET);
68 /* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */
69 nlm_write_reg(gpiobase, GPIO_SWRESET_REG, 1);
70 for ( ; ; )
71 cpu_wait();
72}
73
74void __init plat_mem_setup(void)
75{
76 _machine_restart = (void (*)(char *))nlm_linux_exit;
77 _machine_halt = nlm_linux_exit;
78 pm_power_off = nlm_linux_exit;
79}
80
81const char *get_system_type(void)
82{
83 return "Netlogic XLR/XLS Series";
84}
85
86unsigned int nlm_get_cpu_frequency(void)
87{
88 return (unsigned int)nlm_prom_info.cpu_frequency;
89}
90
91void __init prom_free_prom_memory(void)
92{
93 /* Nothing yet */
94}
95
96void nlm_percpu_init(int hwcpuid)
97{
98 if (hwcpuid % 4 == 0)
99 xlr_percpu_fmn_init();
100}
101
102static void __init build_arcs_cmdline(int *argv)
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;
139fail:
140 panic("Cannot add %s, command line too big!", arg);
141}
142
143static void prom_add_memory(void)
144{
145 struct nlm_boot_mem_map *bootm;
146 u64 start, size;
147 u64 pref_backup = 512; /* avoid pref walking beyond end */
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
165static 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);
171 nodep->ebase = read_c0_ebase() & MIPS_EBASE_BASE;
172 spin_lock_init(&nodep->piclock);
173}
174
175void __init prom_init(void)
176{
177 int *argv, *envp; /* passed as 32 bit ptrs */
178 struct psb_info *prom_infop;
179 void *reset_vec;
180#ifdef CONFIG_SMP
181 int i;
182#endif
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;
190 nlm_init_node();
191
192 /* Update reset entry point with CPU init code */
193 reset_vec = (void *)CKSEG1ADDR(RESET_VEC_PHYS);
194 memset(reset_vec, 0, RESET_VEC_SIZE);
195 memcpy(reset_vec, (void *)nlm_reset_entry,
196 (nlm_reset_entry_end - nlm_reset_entry));
197
198 build_arcs_cmdline(argv);
199 prom_add_memory();
200
201#ifdef CONFIG_SMP
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();
206 register_smp_ops(&nlm_smp_ops);
207#endif
208 xlr_board_info_setup();
209 xlr_percpu_fmn_init();
210}