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1c0c13eb AJ |
1 | /* |
2 | * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org> | |
1c0c13eb | 3 | * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> |
eb032b98 | 4 | * Copyright (C) 2006 Michael Buesch <m@bues.ch> |
121915c4 | 5 | * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org> |
f384b3dd | 6 | * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de> |
1c0c13eb AJ |
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 | ||
cae39d13 | 29 | #include <linux/export.h> |
1c0c13eb AJ |
30 | #include <linux/types.h> |
31 | #include <linux/ssb/ssb.h> | |
b06f3e19 | 32 | #include <linux/ssb/ssb_embedded.h> |
c1d1c5d4 | 33 | #include <linux/bcma/bcma_soc.h> |
25e5fb97 | 34 | #include <asm/bootinfo.h> |
1c0c13eb AJ |
35 | #include <asm/reboot.h> |
36 | #include <asm/time.h> | |
37 | #include <bcm47xx.h> | |
121915c4 | 38 | #include <asm/mach-bcm47xx/nvram.h> |
1c0c13eb | 39 | |
08ccf572 HM |
40 | union bcm47xx_bus bcm47xx_bus; |
41 | EXPORT_SYMBOL(bcm47xx_bus); | |
42 | ||
43 | enum bcm47xx_bus_type bcm47xx_bus_type; | |
44 | EXPORT_SYMBOL(bcm47xx_bus_type); | |
1c0c13eb AJ |
45 | |
46 | static 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 */ | |
08ccf572 | 51 | switch (bcm47xx_bus_type) { |
a656ffcb | 52 | #ifdef CONFIG_BCM47XX_SSB |
08ccf572 HM |
53 | case BCM47XX_BUS_TYPE_SSB: |
54 | ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1); | |
55 | break; | |
c1d1c5d4 HM |
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; | |
a656ffcb | 61 | #endif |
08ccf572 | 62 | } |
1c0c13eb AJ |
63 | while (1) |
64 | cpu_relax(); | |
65 | } | |
66 | ||
67 | static void bcm47xx_machine_halt(void) | |
68 | { | |
69 | /* Disable interrupts and watchdog and spin forever */ | |
70 | local_irq_disable(); | |
08ccf572 | 71 | switch (bcm47xx_bus_type) { |
a656ffcb | 72 | #ifdef CONFIG_BCM47XX_SSB |
08ccf572 HM |
73 | case BCM47XX_BUS_TYPE_SSB: |
74 | ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0); | |
75 | break; | |
c1d1c5d4 HM |
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; | |
a656ffcb | 81 | #endif |
08ccf572 | 82 | } |
1c0c13eb AJ |
83 | while (1) |
84 | cpu_relax(); | |
85 | } | |
86 | ||
a656ffcb | 87 | #ifdef CONFIG_BCM47XX_SSB |
f384b3dd | 88 | static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out) |
fe6f3642 HM |
89 | { |
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 | ||
1c0c13eb | 104 | static int bcm47xx_get_invariants(struct ssb_bus *bus, |
f384b3dd | 105 | struct ssb_init_invariants *iv) |
1c0c13eb | 106 | { |
2aa088d6 | 107 | char buf[20]; |
25e5fb97 AJ |
108 | |
109 | /* Fill boardinfo structure */ | |
110 | memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); | |
111 | ||
a9bba182 | 112 | bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL); |
25e5fb97 | 113 | |
a7c62f85 | 114 | bcm47xx_fill_sprom(&iv->sprom, NULL); |
121915c4 | 115 | |
2aa088d6 HM |
116 | if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) |
117 | iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); | |
25e5fb97 | 118 | |
1c0c13eb AJ |
119 | return 0; |
120 | } | |
121 | ||
08ccf572 | 122 | static void __init bcm47xx_register_ssb(void) |
1c0c13eb AJ |
123 | { |
124 | int err; | |
1690a7f9 HM |
125 | char buf[100]; |
126 | struct ssb_mipscore *mcore; | |
1c0c13eb | 127 | |
f384b3dd | 128 | err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb); |
fe6f3642 HM |
129 | if (err) |
130 | printk(KERN_WARNING "bcm47xx: someone else already registered" | |
131 | " a ssb SPROM callback handler (err %d)\n", err); | |
132 | ||
08ccf572 | 133 | err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE, |
1c0c13eb AJ |
134 | bcm47xx_get_invariants); |
135 | if (err) | |
ab75dc02 | 136 | panic("Failed to initialize SSB bus (err %d)", err); |
1c0c13eb | 137 | |
08ccf572 | 138 | mcore = &bcm47xx_bus.ssb.mipscore; |
1690a7f9 HM |
139 | if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) { |
140 | if (strstr(buf, "console=ttyS1")) { | |
141 | struct ssb_serial_port port; | |
142 | ||
143 | printk(KERN_DEBUG "Swapping serial ports!\n"); | |
144 | /* swap serial ports */ | |
145 | memcpy(&port, &mcore->serial_ports[0], sizeof(port)); | |
146 | memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], | |
147 | sizeof(port)); | |
148 | memcpy(&mcore->serial_ports[1], &port, sizeof(port)); | |
149 | } | |
150 | } | |
08ccf572 | 151 | } |
a656ffcb | 152 | #endif |
08ccf572 | 153 | |
c1d1c5d4 | 154 | #ifdef CONFIG_BCM47XX_BCMA |
f384b3dd HM |
155 | static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out) |
156 | { | |
157 | char prefix[10]; | |
158 | struct bcma_device *core; | |
159 | ||
160 | switch (bus->hosttype) { | |
161 | case BCMA_HOSTTYPE_PCI: | |
162 | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", | |
163 | bus->host_pci->bus->number + 1, | |
164 | PCI_SLOT(bus->host_pci->devfn)); | |
165 | bcm47xx_fill_sprom(out, prefix); | |
166 | return 0; | |
167 | case BCMA_HOSTTYPE_SOC: | |
168 | bcm47xx_fill_sprom_ethernet(out, NULL); | |
169 | core = bcma_find_core(bus, BCMA_CORE_80211); | |
170 | if (core) { | |
171 | snprintf(prefix, sizeof(prefix), "sb/%u/", | |
172 | core->core_index); | |
173 | bcm47xx_fill_sprom(out, prefix); | |
174 | } | |
175 | return 0; | |
176 | default: | |
177 | pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n"); | |
178 | return -EINVAL; | |
179 | } | |
180 | } | |
181 | ||
c1d1c5d4 HM |
182 | static void __init bcm47xx_register_bcma(void) |
183 | { | |
184 | int err; | |
185 | ||
f384b3dd HM |
186 | err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma); |
187 | if (err) | |
188 | pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err); | |
189 | ||
c1d1c5d4 HM |
190 | err = bcma_host_soc_register(&bcm47xx_bus.bcma); |
191 | if (err) | |
ab75dc02 | 192 | panic("Failed to initialize BCMA bus (err %d)", err); |
c1d1c5d4 HM |
193 | } |
194 | #endif | |
195 | ||
08ccf572 HM |
196 | void __init plat_mem_setup(void) |
197 | { | |
198 | struct cpuinfo_mips *c = ¤t_cpu_data; | |
199 | ||
c1d1c5d4 HM |
200 | if (c->cputype == CPU_74K) { |
201 | printk(KERN_INFO "bcm47xx: using bcma bus\n"); | |
202 | #ifdef CONFIG_BCM47XX_BCMA | |
203 | bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA; | |
204 | bcm47xx_register_bcma(); | |
205 | #endif | |
206 | } else { | |
207 | printk(KERN_INFO "bcm47xx: using ssb bus\n"); | |
a656ffcb | 208 | #ifdef CONFIG_BCM47XX_SSB |
c1d1c5d4 HM |
209 | bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB; |
210 | bcm47xx_register_ssb(); | |
a656ffcb | 211 | #endif |
c1d1c5d4 | 212 | } |
1690a7f9 | 213 | |
1c0c13eb AJ |
214 | _machine_restart = bcm47xx_machine_restart; |
215 | _machine_halt = bcm47xx_machine_halt; | |
216 | pm_power_off = bcm47xx_machine_halt; | |
1c0c13eb | 217 | } |
c1d1c5d4 HM |
218 | |
219 | static int __init bcm47xx_register_bus_complete(void) | |
220 | { | |
221 | switch (bcm47xx_bus_type) { | |
222 | #ifdef CONFIG_BCM47XX_SSB | |
223 | case BCM47XX_BUS_TYPE_SSB: | |
224 | /* Nothing to do */ | |
225 | break; | |
226 | #endif | |
227 | #ifdef CONFIG_BCM47XX_BCMA | |
228 | case BCM47XX_BUS_TYPE_BCMA: | |
229 | bcma_bus_register(&bcm47xx_bus.bcma.bus); | |
230 | break; | |
231 | #endif | |
232 | } | |
233 | return 0; | |
234 | } | |
235 | device_initcall(bcm47xx_register_bus_complete); |