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>
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.
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.
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.
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>
38 #include <asm/mach-bcm47xx/nvram.h>
40 union bcm47xx_bus bcm47xx_bus
;
41 EXPORT_SYMBOL(bcm47xx_bus
);
43 enum bcm47xx_bus_type bcm47xx_bus_type
;
44 EXPORT_SYMBOL(bcm47xx_bus_type
);
46 static void bcm47xx_machine_restart(char *command
)
48 printk(KERN_ALERT
"Please stand by while rebooting the system...\n");
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);
57 #ifdef CONFIG_BCM47XX_BCMA
58 case BCM47XX_BUS_TYPE_BCMA
:
59 bcma_chipco_watchdog_timer_set(&bcm47xx_bus
.bcma
.bus
.drv_cc
, 1);
67 static void bcm47xx_machine_halt(void)
69 /* Disable interrupts and watchdog and spin forever */
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);
77 #ifdef CONFIG_BCM47XX_BCMA
78 case BCM47XX_BUS_TYPE_BCMA
:
79 bcma_chipco_watchdog_timer_set(&bcm47xx_bus
.bcma
.bus
.drv_cc
, 0);
87 #ifdef CONFIG_BCM47XX_SSB
88 static int bcm47xx_get_sprom_ssb(struct ssb_bus
*bus
, struct ssb_sprom
*out
)
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
);
100 printk(KERN_WARNING
"bcm47xx: unable to fill SPROM for given bustype.\n");
105 static int bcm47xx_get_invariants(struct ssb_bus
*bus
,
106 struct ssb_init_invariants
*iv
)
110 /* Fill boardinfo structure */
111 memset(&(iv
->boardinfo
), 0 , sizeof(struct ssb_boardinfo
));
113 bcm47xx_fill_ssb_boardinfo(&iv
->boardinfo
, NULL
);
115 memset(&iv
->sprom
, 0, sizeof(struct ssb_sprom
));
116 bcm47xx_fill_sprom(&iv
->sprom
, NULL
);
118 if (nvram_getenv("cardbus", buf
, sizeof(buf
)) >= 0)
119 iv
->has_cardbus_slot
= !!simple_strtoul(buf
, NULL
, 10);
124 static void __init
bcm47xx_register_ssb(void)
128 struct ssb_mipscore
*mcore
;
130 err
= ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb
);
132 printk(KERN_WARNING
"bcm47xx: someone else already registered"
133 " a ssb SPROM callback handler (err %d)\n", err
);
135 err
= ssb_bus_ssbbus_register(&(bcm47xx_bus
.ssb
), SSB_ENUM_BASE
,
136 bcm47xx_get_invariants
);
138 panic("Failed to initialize SSB bus (err %d)", err
);
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
;
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],
150 memcpy(&mcore
->serial_ports
[1], &port
, sizeof(port
));
156 #ifdef CONFIG_BCM47XX_BCMA
157 static int bcm47xx_get_sprom_bcma(struct bcma_bus
*bus
, struct ssb_sprom
*out
)
160 struct bcma_device
*core
;
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
);
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
);
175 snprintf(prefix
, sizeof(prefix
), "sb/%u/",
177 bcm47xx_fill_sprom(out
, prefix
);
181 pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
186 static void __init
bcm47xx_register_bcma(void)
190 err
= bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma
);
192 pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err
);
194 err
= bcma_host_soc_register(&bcm47xx_bus
.bcma
);
196 panic("Failed to initialize BCMA bus (err %d)", err
);
198 bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus
.bcma
.bus
.boardinfo
, NULL
);
202 void __init
plat_mem_setup(void)
204 struct cpuinfo_mips
*c
= ¤t_cpu_data
;
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();
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();
220 _machine_restart
= bcm47xx_machine_restart
;
221 _machine_halt
= bcm47xx_machine_halt
;
222 pm_power_off
= bcm47xx_machine_halt
;
225 static int __init
bcm47xx_register_bus_complete(void)
227 switch (bcm47xx_bus_type
) {
228 #ifdef CONFIG_BCM47XX_SSB
229 case BCM47XX_BUS_TYPE_SSB
:
233 #ifdef CONFIG_BCM47XX_BCMA
234 case BCM47XX_BUS_TYPE_BCMA
:
235 bcma_bus_register(&bcm47xx_bus
.bcma
.bus
);
241 device_initcall(bcm47xx_register_bus_complete
);