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 <bcm47xx_nvram.h>
39 #include <bcm47xx_board.h>
41 union bcm47xx_bus bcm47xx_bus;
42 EXPORT_SYMBOL(bcm47xx_bus);
44 enum bcm47xx_bus_type bcm47xx_bus_type;
45 EXPORT_SYMBOL(bcm47xx_bus_type);
47 static void bcm47xx_machine_restart(char *command)
49 printk(KERN_ALERT "Please stand by while rebooting the system...\n");
51 /* Set the watchdog timer to reset immediately */
52 switch (bcm47xx_bus_type) {
53 #ifdef CONFIG_BCM47XX_SSB
54 case BCM47XX_BUS_TYPE_SSB:
55 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
58 #ifdef CONFIG_BCM47XX_BCMA
59 case BCM47XX_BUS_TYPE_BCMA:
60 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
68 static void bcm47xx_machine_halt(void)
70 /* Disable interrupts and watchdog and spin forever */
72 switch (bcm47xx_bus_type) {
73 #ifdef CONFIG_BCM47XX_SSB
74 case BCM47XX_BUS_TYPE_SSB:
75 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
78 #ifdef CONFIG_BCM47XX_BCMA
79 case BCM47XX_BUS_TYPE_BCMA:
80 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
88 #ifdef CONFIG_BCM47XX_SSB
89 static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
93 if (bus->bustype == SSB_BUSTYPE_PCI) {
94 memset(out, 0, sizeof(struct ssb_sprom));
95 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
96 bus->host_pci->bus->number + 1,
97 PCI_SLOT(bus->host_pci->devfn));
98 bcm47xx_fill_sprom(out, prefix, false);
101 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
106 static int bcm47xx_get_invariants(struct ssb_bus *bus,
107 struct ssb_init_invariants *iv)
111 /* Fill boardinfo structure */
112 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
114 bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);
116 memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
117 bcm47xx_fill_sprom(&iv->sprom, NULL, false);
119 if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
120 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
125 static void __init bcm47xx_register_ssb(void)
129 struct ssb_mipscore *mcore;
131 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb);
133 printk(KERN_WARNING "bcm47xx: someone else already registered"
134 " a ssb SPROM callback handler (err %d)\n", err);
136 err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
137 bcm47xx_get_invariants);
139 panic("Failed to initialize SSB bus (err %d)", err);
141 mcore = &bcm47xx_bus.ssb.mipscore;
142 if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
143 if (strstr(buf, "console=ttyS1")) {
144 struct ssb_serial_port port;
146 printk(KERN_DEBUG "Swapping serial ports!\n");
147 /* swap serial ports */
148 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
149 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
151 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
157 #ifdef CONFIG_BCM47XX_BCMA
158 static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
161 struct bcma_device *core;
163 switch (bus->hosttype) {
164 case BCMA_HOSTTYPE_PCI:
165 memset(out, 0, sizeof(struct ssb_sprom));
166 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
167 bus->host_pci->bus->number + 1,
168 PCI_SLOT(bus->host_pci->devfn));
169 bcm47xx_fill_sprom(out, prefix, false);
171 case BCMA_HOSTTYPE_SOC:
172 memset(out, 0, sizeof(struct ssb_sprom));
173 core = bcma_find_core(bus, BCMA_CORE_80211);
175 snprintf(prefix, sizeof(prefix), "sb/%u/",
177 bcm47xx_fill_sprom(out, prefix, true);
179 bcm47xx_fill_sprom(out, NULL, false);
183 pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
188 static void __init bcm47xx_register_bcma(void)
192 err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
194 pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);
196 err = bcma_host_soc_register(&bcm47xx_bus.bcma);
198 panic("Failed to initialize BCMA bus (err %d)", err);
200 bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
204 void __init plat_mem_setup(void)
206 struct cpuinfo_mips *c = ¤t_cpu_data;
208 if (c->cputype == CPU_74K) {
209 printk(KERN_INFO "bcm47xx: using bcma bus\n");
210 #ifdef CONFIG_BCM47XX_BCMA
211 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
212 bcm47xx_register_bcma();
215 printk(KERN_INFO "bcm47xx: using ssb bus\n");
216 #ifdef CONFIG_BCM47XX_SSB
217 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
218 bcm47xx_register_ssb();
222 _machine_restart = bcm47xx_machine_restart;
223 _machine_halt = bcm47xx_machine_halt;
224 pm_power_off = bcm47xx_machine_halt;
225 bcm47xx_board_detect();
228 static int __init bcm47xx_register_bus_complete(void)
230 switch (bcm47xx_bus_type) {
231 #ifdef CONFIG_BCM47XX_SSB
232 case BCM47XX_BUS_TYPE_SSB:
236 #ifdef CONFIG_BCM47XX_BCMA
237 case BCM47XX_BUS_TYPE_BCMA:
238 bcma_bus_register(&bcm47xx_bus.bcma.bus);
244 device_initcall(bcm47xx_register_bus_complete);