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1/*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
3 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2006 Michael Buesch <m@bues.ch>
5 * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
6 * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include "bcm47xx_private.h"
30
31#include <linux/bcm47xx_sprom.h>
32#include <linux/export.h>
33#include <linux/types.h>
34#include <linux/ethtool.h>
35#include <linux/phy.h>
36#include <linux/phy_fixed.h>
37#include <linux/ssb/ssb.h>
38#include <linux/ssb/ssb_embedded.h>
39#include <linux/bcma/bcma_soc.h>
40#include <asm/bootinfo.h>
41#include <asm/idle.h>
42#include <asm/prom.h>
43#include <asm/reboot.h>
44#include <asm/time.h>
45#include <bcm47xx.h>
46#include <bcm47xx_board.h>
47
48union bcm47xx_bus bcm47xx_bus;
49EXPORT_SYMBOL(bcm47xx_bus);
50
51enum bcm47xx_bus_type bcm47xx_bus_type;
52EXPORT_SYMBOL(bcm47xx_bus_type);
53
54static void bcm47xx_machine_restart(char *command)
55{
56 pr_alert("Please stand by while rebooting the system...\n");
57 local_irq_disable();
58 /* Set the watchdog timer to reset immediately */
59 switch (bcm47xx_bus_type) {
60#ifdef CONFIG_BCM47XX_SSB
61 case BCM47XX_BUS_TYPE_SSB:
62 if (bcm47xx_bus.ssb.chip_id == 0x4785)
63 write_c0_diag4(1 << 22);
64 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
65 if (bcm47xx_bus.ssb.chip_id == 0x4785) {
66 __asm__ __volatile__(
67 ".set\tmips3\n\t"
68 "sync\n\t"
69 "wait\n\t"
70 ".set\tmips0");
71 }
72 break;
73#endif
74#ifdef CONFIG_BCM47XX_BCMA
75 case BCM47XX_BUS_TYPE_BCMA:
76 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
77 break;
78#endif
79 }
80 while (1)
81 cpu_relax();
82}
83
84static void bcm47xx_machine_halt(void)
85{
86 /* Disable interrupts and watchdog and spin forever */
87 local_irq_disable();
88 switch (bcm47xx_bus_type) {
89#ifdef CONFIG_BCM47XX_SSB
90 case BCM47XX_BUS_TYPE_SSB:
91 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
92 break;
93#endif
94#ifdef CONFIG_BCM47XX_BCMA
95 case BCM47XX_BUS_TYPE_BCMA:
96 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
97 break;
98#endif
99 }
100 while (1)
101 cpu_relax();
102}
103
104#ifdef CONFIG_BCM47XX_SSB
105static void __init bcm47xx_register_ssb(void)
106{
107 int err;
108 char buf[100];
109 struct ssb_mipscore *mcore;
110
111 err = ssb_bus_host_soc_register(&bcm47xx_bus.ssb, SSB_ENUM_BASE);
112 if (err)
113 panic("Failed to initialize SSB bus (err %d)", err);
114
115 mcore = &bcm47xx_bus.ssb.mipscore;
116 if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
117 if (strstr(buf, "console=ttyS1")) {
118 struct ssb_serial_port port;
119
120 pr_debug("Swapping serial ports!\n");
121 /* swap serial ports */
122 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
123 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
124 sizeof(port));
125 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
126 }
127 }
128}
129#endif
130
131#ifdef CONFIG_BCM47XX_BCMA
132static void __init bcm47xx_register_bcma(void)
133{
134 int err;
135
136 err = bcma_host_soc_register(&bcm47xx_bus.bcma);
137 if (err)
138 panic("Failed to register BCMA bus (err %d)", err);
139}
140#endif
141
142/*
143 * Memory setup is done in the early part of MIPS's arch_mem_init. It's supposed
144 * to detect memory and record it with add_memory_region.
145 * Any extra initializaion performed here must not use kmalloc or bootmem.
146 */
147void __init plat_mem_setup(void)
148{
149 struct cpuinfo_mips *c = ¤t_cpu_data;
150
151 if ((c->cputype == CPU_74K) || (c->cputype == CPU_1074K)) {
152 pr_info("Using bcma bus\n");
153#ifdef CONFIG_BCM47XX_BCMA
154 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
155 bcm47xx_register_bcma();
156 bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
157#ifdef CONFIG_HIGHMEM
158 bcm47xx_prom_highmem_init();
159#endif
160#endif
161 } else {
162 pr_info("Using ssb bus\n");
163#ifdef CONFIG_BCM47XX_SSB
164 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
165 bcm47xx_sprom_register_fallbacks();
166 bcm47xx_register_ssb();
167 bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id);
168#endif
169 }
170
171 _machine_restart = bcm47xx_machine_restart;
172 _machine_halt = bcm47xx_machine_halt;
173 pm_power_off = bcm47xx_machine_halt;
174}
175
176/*
177 * This finishes bus initialization doing things that were not possible without
178 * kmalloc. Make sure to call it late enough (after mm_init).
179 */
180void __init bcm47xx_bus_setup(void)
181{
182#ifdef CONFIG_BCM47XX_BCMA
183 if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
184 int err;
185
186 err = bcma_host_soc_init(&bcm47xx_bus.bcma);
187 if (err)
188 panic("Failed to initialize BCMA bus (err %d)", err);
189 }
190#endif
191
192 /* With bus initialized we can access NVRAM and detect the board */
193 bcm47xx_board_detect();
194 mips_set_machine_name(bcm47xx_board_get_name());
195}
196
197static int __init bcm47xx_cpu_fixes(void)
198{
199 switch (bcm47xx_bus_type) {
200#ifdef CONFIG_BCM47XX_SSB
201 case BCM47XX_BUS_TYPE_SSB:
202 /* Nothing to do */
203 break;
204#endif
205#ifdef CONFIG_BCM47XX_BCMA
206 case BCM47XX_BUS_TYPE_BCMA:
207 /* The BCM4706 has a problem with the CPU wait instruction.
208 * When r4k_wait or r4k_wait_irqoff is used will just hang and
209 * not return from a msleep(). Removing the cpu_wait
210 * functionality is a workaround for this problem. The BCM4716
211 * does not have this problem.
212 */
213 if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706)
214 cpu_wait = NULL;
215 break;
216#endif
217 }
218 return 0;
219}
220arch_initcall(bcm47xx_cpu_fixes);
221
222static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = {
223 .link = 1,
224 .speed = SPEED_100,
225 .duplex = DUPLEX_FULL,
226};
227
228static int __init bcm47xx_register_bus_complete(void)
229{
230 switch (bcm47xx_bus_type) {
231#ifdef CONFIG_BCM47XX_SSB
232 case BCM47XX_BUS_TYPE_SSB:
233 /* Nothing to do */
234 break;
235#endif
236#ifdef CONFIG_BCM47XX_BCMA
237 case BCM47XX_BUS_TYPE_BCMA:
238 bcma_bus_register(&bcm47xx_bus.bcma.bus);
239 break;
240#endif
241 }
242 bcm47xx_buttons_register();
243 bcm47xx_leds_register();
244 bcm47xx_workarounds();
245
246 fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status, -1);
247 return 0;
248}
249device_initcall(bcm47xx_register_bus_complete);
1/*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
3 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2006 Michael Buesch <m@bues.ch>
5 * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
6 * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/export.h>
30#include <linux/types.h>
31#include <linux/ssb/ssb.h>
32#include <linux/ssb/ssb_embedded.h>
33#include <linux/bcma/bcma_soc.h>
34#include <asm/bootinfo.h>
35#include <asm/reboot.h>
36#include <asm/time.h>
37#include <bcm47xx.h>
38#include <asm/mach-bcm47xx/nvram.h>
39
40union bcm47xx_bus bcm47xx_bus;
41EXPORT_SYMBOL(bcm47xx_bus);
42
43enum bcm47xx_bus_type bcm47xx_bus_type;
44EXPORT_SYMBOL(bcm47xx_bus_type);
45
46static void bcm47xx_machine_restart(char *command)
47{
48 printk(KERN_ALERT "Please stand by while rebooting the system...\n");
49 local_irq_disable();
50 /* Set the watchdog timer to reset immediately */
51 switch (bcm47xx_bus_type) {
52#ifdef CONFIG_BCM47XX_SSB
53 case BCM47XX_BUS_TYPE_SSB:
54 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
55 break;
56#endif
57#ifdef CONFIG_BCM47XX_BCMA
58 case BCM47XX_BUS_TYPE_BCMA:
59 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
60 break;
61#endif
62 }
63 while (1)
64 cpu_relax();
65}
66
67static void bcm47xx_machine_halt(void)
68{
69 /* Disable interrupts and watchdog and spin forever */
70 local_irq_disable();
71 switch (bcm47xx_bus_type) {
72#ifdef CONFIG_BCM47XX_SSB
73 case BCM47XX_BUS_TYPE_SSB:
74 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
75 break;
76#endif
77#ifdef CONFIG_BCM47XX_BCMA
78 case BCM47XX_BUS_TYPE_BCMA:
79 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
80 break;
81#endif
82 }
83 while (1)
84 cpu_relax();
85}
86
87#ifdef CONFIG_BCM47XX_SSB
88static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
89{
90 char prefix[10];
91
92 if (bus->bustype == SSB_BUSTYPE_PCI) {
93 memset(out, 0, sizeof(struct ssb_sprom));
94 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
95 bus->host_pci->bus->number + 1,
96 PCI_SLOT(bus->host_pci->devfn));
97 bcm47xx_fill_sprom(out, prefix);
98 return 0;
99 } else {
100 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
101 return -EINVAL;
102 }
103}
104
105static int bcm47xx_get_invariants(struct ssb_bus *bus,
106 struct ssb_init_invariants *iv)
107{
108 char buf[20];
109
110 /* Fill boardinfo structure */
111 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
112
113 bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);
114
115 memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
116 bcm47xx_fill_sprom(&iv->sprom, NULL);
117
118 if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
119 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
120
121 return 0;
122}
123
124static void __init bcm47xx_register_ssb(void)
125{
126 int err;
127 char buf[100];
128 struct ssb_mipscore *mcore;
129
130 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb);
131 if (err)
132 printk(KERN_WARNING "bcm47xx: someone else already registered"
133 " a ssb SPROM callback handler (err %d)\n", err);
134
135 err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
136 bcm47xx_get_invariants);
137 if (err)
138 panic("Failed to initialize SSB bus (err %d)", err);
139
140 mcore = &bcm47xx_bus.ssb.mipscore;
141 if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
142 if (strstr(buf, "console=ttyS1")) {
143 struct ssb_serial_port port;
144
145 printk(KERN_DEBUG "Swapping serial ports!\n");
146 /* swap serial ports */
147 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
148 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
149 sizeof(port));
150 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
151 }
152 }
153}
154#endif
155
156#ifdef CONFIG_BCM47XX_BCMA
157static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
158{
159 char prefix[10];
160 struct bcma_device *core;
161
162 switch (bus->hosttype) {
163 case BCMA_HOSTTYPE_PCI:
164 memset(out, 0, sizeof(struct ssb_sprom));
165 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
166 bus->host_pci->bus->number + 1,
167 PCI_SLOT(bus->host_pci->devfn));
168 bcm47xx_fill_sprom(out, prefix);
169 return 0;
170 case BCMA_HOSTTYPE_SOC:
171 memset(out, 0, sizeof(struct ssb_sprom));
172 bcm47xx_fill_sprom_ethernet(out, NULL);
173 core = bcma_find_core(bus, BCMA_CORE_80211);
174 if (core) {
175 snprintf(prefix, sizeof(prefix), "sb/%u/",
176 core->core_index);
177 bcm47xx_fill_sprom(out, prefix);
178 }
179 return 0;
180 default:
181 pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
182 return -EINVAL;
183 }
184}
185
186static void __init bcm47xx_register_bcma(void)
187{
188 int err;
189
190 err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
191 if (err)
192 pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);
193
194 err = bcma_host_soc_register(&bcm47xx_bus.bcma);
195 if (err)
196 panic("Failed to initialize BCMA bus (err %d)", err);
197
198 bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
199}
200#endif
201
202void __init plat_mem_setup(void)
203{
204 struct cpuinfo_mips *c = ¤t_cpu_data;
205
206 if (c->cputype == CPU_74K) {
207 printk(KERN_INFO "bcm47xx: using bcma bus\n");
208#ifdef CONFIG_BCM47XX_BCMA
209 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
210 bcm47xx_register_bcma();
211#endif
212 } else {
213 printk(KERN_INFO "bcm47xx: using ssb bus\n");
214#ifdef CONFIG_BCM47XX_SSB
215 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
216 bcm47xx_register_ssb();
217#endif
218 }
219
220 _machine_restart = bcm47xx_machine_restart;
221 _machine_halt = bcm47xx_machine_halt;
222 pm_power_off = bcm47xx_machine_halt;
223}
224
225static int __init bcm47xx_register_bus_complete(void)
226{
227 switch (bcm47xx_bus_type) {
228#ifdef CONFIG_BCM47XX_SSB
229 case BCM47XX_BUS_TYPE_SSB:
230 /* Nothing to do */
231 break;
232#endif
233#ifdef CONFIG_BCM47XX_BCMA
234 case BCM47XX_BUS_TYPE_BCMA:
235 bcma_bus_register(&bcm47xx_bus.bcma.bus);
236 break;
237#endif
238 }
239 return 0;
240}
241device_initcall(bcm47xx_register_bus_complete);