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Aurelien Jarno1c0c13e2007-09-25 15:40:12 +02001/*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +02003 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
Michael Büscheb032b92011-07-04 20:50:05 +02004 * Copyright (C) 2006 Michael Buesch <m@bues.ch>
Waldemar Brodkorb121915c2010-06-08 19:06:01 +02005 * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
Hauke Mehrtensf384b3d2012-02-28 00:56:14 +01006 * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +02007 *
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
Paul Gortmakercae39d12011-07-28 18:46:31 -040029#include <linux/export.h>
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +020030#include <linux/types.h>
31#include <linux/ssb/ssb.h>
Aurelien Jarnob06f3e12008-10-14 11:44:26 +020032#include <linux/ssb/ssb_embedded.h>
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +020033#include <linux/bcma/bcma_soc.h>
Aurelien Jarno25e5fb92007-09-25 15:41:24 +020034#include <asm/bootinfo.h>
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +020035#include <asm/reboot.h>
36#include <asm/time.h>
37#include <bcm47xx.h>
Waldemar Brodkorb121915c2010-06-08 19:06:01 +020038#include <asm/mach-bcm47xx/nvram.h>
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +020039
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +020040union bcm47xx_bus bcm47xx_bus;
41EXPORT_SYMBOL(bcm47xx_bus);
42
43enum bcm47xx_bus_type bcm47xx_bus_type;
44EXPORT_SYMBOL(bcm47xx_bus_type);
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +020045
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 */
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +020051 switch (bcm47xx_bus_type) {
Hauke Mehrtensa656ffc2011-07-23 01:20:13 +020052#ifdef CONFIG_BCM47XX_SSB
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +020053 case BCM47XX_BUS_TYPE_SSB:
54 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
55 break;
Hauke Mehrtensa656ffc2011-07-23 01:20:13 +020056#endif
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +020057#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
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +020062 }
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +020063 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();
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +020071 switch (bcm47xx_bus_type) {
Hauke Mehrtensa656ffc2011-07-23 01:20:13 +020072#ifdef CONFIG_BCM47XX_SSB
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +020073 case BCM47XX_BUS_TYPE_SSB:
74 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
75 break;
Hauke Mehrtensa656ffc2011-07-23 01:20:13 +020076#endif
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +020077#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
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +020082 }
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +020083 while (1)
84 cpu_relax();
85}
86
Hauke Mehrtensa656ffc2011-07-23 01:20:13 +020087#ifdef CONFIG_BCM47XX_SSB
Hauke Mehrtensf384b3d2012-02-28 00:56:14 +010088static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
Hauke Mehrtensfe6f3642011-05-10 23:31:32 +020089{
90 char prefix[10];
91
92 if (bus->bustype == SSB_BUSTYPE_PCI) {
93 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
94 bus->host_pci->bus->number + 1,
95 PCI_SLOT(bus->host_pci->devfn));
96 bcm47xx_fill_sprom(out, prefix);
97 return 0;
98 } else {
99 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
100 return -EINVAL;
101 }
102}
103
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200104static int bcm47xx_get_invariants(struct ssb_bus *bus,
Hauke Mehrtensf384b3d2012-02-28 00:56:14 +0100105 struct ssb_init_invariants *iv)
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200106{
Hauke Mehrtens2aa088d2010-11-27 17:45:59 +0100107 char buf[20];
Aurelien Jarno25e5fb92007-09-25 15:41:24 +0200108
109 /* Fill boardinfo structure */
110 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
111
Hauke Mehrtens82571082010-11-27 17:45:58 +0100112 if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
Hauke Mehrtens2aa088d2010-11-27 17:45:59 +0100113 iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
114 else
115 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
Hauke Mehrtens82571082010-11-27 17:45:58 +0100116 if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
Aurelien Jarno25e5fb92007-09-25 15:41:24 +0200117 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
Aurelien Jarno25e5fb92007-09-25 15:41:24 +0200118
Hauke Mehrtensa7c62f82011-05-10 23:31:31 +0200119 bcm47xx_fill_sprom(&iv->sprom, NULL);
Aurelien Jarno25e5fb92007-09-25 15:41:24 +0200120
Hauke Mehrtens2aa088d2010-11-27 17:45:59 +0100121 if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
122 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
Aurelien Jarno25e5fb92007-09-25 15:41:24 +0200123
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200124 return 0;
125}
126
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +0200127static void __init bcm47xx_register_ssb(void)
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200128{
129 int err;
Hauke Mehrtens1690a7f2010-11-27 17:46:01 +0100130 char buf[100];
131 struct ssb_mipscore *mcore;
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200132
Hauke Mehrtensf384b3d2012-02-28 00:56:14 +0100133 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb);
Hauke Mehrtensfe6f3642011-05-10 23:31:32 +0200134 if (err)
135 printk(KERN_WARNING "bcm47xx: someone else already registered"
136 " a ssb SPROM callback handler (err %d)\n", err);
137
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +0200138 err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200139 bcm47xx_get_invariants);
140 if (err)
Ralf Baechleab75dc02011-11-17 15:07:31 +0000141 panic("Failed to initialize SSB bus (err %d)", err);
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200142
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +0200143 mcore = &bcm47xx_bus.ssb.mipscore;
Hauke Mehrtens1690a7f2010-11-27 17:46:01 +0100144 if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
145 if (strstr(buf, "console=ttyS1")) {
146 struct ssb_serial_port port;
147
148 printk(KERN_DEBUG "Swapping serial ports!\n");
149 /* swap serial ports */
150 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
151 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
152 sizeof(port));
153 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
154 }
155 }
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +0200156}
Hauke Mehrtensa656ffc2011-07-23 01:20:13 +0200157#endif
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +0200158
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +0200159#ifdef CONFIG_BCM47XX_BCMA
Hauke Mehrtensf384b3d2012-02-28 00:56:14 +0100160static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
161{
162 char prefix[10];
163 struct bcma_device *core;
164
165 switch (bus->hosttype) {
166 case BCMA_HOSTTYPE_PCI:
167 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
168 bus->host_pci->bus->number + 1,
169 PCI_SLOT(bus->host_pci->devfn));
170 bcm47xx_fill_sprom(out, prefix);
171 return 0;
172 case BCMA_HOSTTYPE_SOC:
173 bcm47xx_fill_sprom_ethernet(out, NULL);
174 core = bcma_find_core(bus, BCMA_CORE_80211);
175 if (core) {
176 snprintf(prefix, sizeof(prefix), "sb/%u/",
177 core->core_index);
178 bcm47xx_fill_sprom(out, prefix);
179 }
180 return 0;
181 default:
182 pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
183 return -EINVAL;
184 }
185}
186
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +0200187static void __init bcm47xx_register_bcma(void)
188{
189 int err;
190
Hauke Mehrtensf384b3d2012-02-28 00:56:14 +0100191 err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
192 if (err)
193 pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);
194
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +0200195 err = bcma_host_soc_register(&bcm47xx_bus.bcma);
196 if (err)
Ralf Baechleab75dc02011-11-17 15:07:31 +0000197 panic("Failed to initialize BCMA bus (err %d)", err);
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +0200198}
199#endif
200
Hauke Mehrtens08ccf5722011-07-23 01:20:12 +0200201void __init plat_mem_setup(void)
202{
203 struct cpuinfo_mips *c = &current_cpu_data;
204
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +0200205 if (c->cputype == CPU_74K) {
206 printk(KERN_INFO "bcm47xx: using bcma bus\n");
207#ifdef CONFIG_BCM47XX_BCMA
208 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
209 bcm47xx_register_bcma();
Hauke Mehrtensa656ffc2011-07-23 01:20:13 +0200210#endif
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +0200211 } else {
212 printk(KERN_INFO "bcm47xx: using ssb bus\n");
213#ifdef CONFIG_BCM47XX_SSB
214 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
215 bcm47xx_register_ssb();
216#endif
217 }
Hauke Mehrtens1690a7f2010-11-27 17:46:01 +0100218
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200219 _machine_restart = bcm47xx_machine_restart;
220 _machine_halt = bcm47xx_machine_halt;
221 pm_power_off = bcm47xx_machine_halt;
Aurelien Jarno1c0c13e2007-09-25 15:40:12 +0200222}
Hauke Mehrtensc1d1c5d2011-07-23 01:20:14 +0200223
224static int __init bcm47xx_register_bus_complete(void)
225{
226 switch (bcm47xx_bus_type) {
227#ifdef CONFIG_BCM47XX_SSB
228 case BCM47XX_BUS_TYPE_SSB:
229 /* Nothing to do */
230 break;
231#endif
232#ifdef CONFIG_BCM47XX_BCMA
233 case BCM47XX_BUS_TYPE_BCMA:
234 bcma_bus_register(&bcm47xx_bus.bcma.bus);
235 break;
236#endif
237 }
238 return 0;
239}
240device_initcall(bcm47xx_register_bus_complete);