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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) { | |
5fe2e071 | 93 | memset(out, 0, sizeof(struct ssb_sprom)); |
fe6f3642 HM |
94 | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", |
95 | bus->host_pci->bus->number + 1, | |
96 | PCI_SLOT(bus->host_pci->devfn)); | |
b8ebbaff | 97 | bcm47xx_fill_sprom(out, prefix, false); |
fe6f3642 HM |
98 | return 0; |
99 | } else { | |
100 | printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n"); | |
101 | return -EINVAL; | |
102 | } | |
103 | } | |
104 | ||
1c0c13eb | 105 | static int bcm47xx_get_invariants(struct ssb_bus *bus, |
f384b3dd | 106 | struct ssb_init_invariants *iv) |
1c0c13eb | 107 | { |
2aa088d6 | 108 | char buf[20]; |
25e5fb97 AJ |
109 | |
110 | /* Fill boardinfo structure */ | |
111 | memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); | |
112 | ||
a9bba182 | 113 | bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL); |
25e5fb97 | 114 | |
5fe2e071 | 115 | memset(&iv->sprom, 0, sizeof(struct ssb_sprom)); |
b8ebbaff | 116 | bcm47xx_fill_sprom(&iv->sprom, NULL, false); |
121915c4 | 117 | |
2aa088d6 HM |
118 | if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) |
119 | iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); | |
25e5fb97 | 120 | |
1c0c13eb AJ |
121 | return 0; |
122 | } | |
123 | ||
08ccf572 | 124 | static void __init bcm47xx_register_ssb(void) |
1c0c13eb AJ |
125 | { |
126 | int err; | |
1690a7f9 HM |
127 | char buf[100]; |
128 | struct ssb_mipscore *mcore; | |
1c0c13eb | 129 | |
f384b3dd | 130 | err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb); |
fe6f3642 HM |
131 | if (err) |
132 | printk(KERN_WARNING "bcm47xx: someone else already registered" | |
133 | " a ssb SPROM callback handler (err %d)\n", err); | |
134 | ||
08ccf572 | 135 | err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE, |
1c0c13eb AJ |
136 | bcm47xx_get_invariants); |
137 | if (err) | |
ab75dc02 | 138 | panic("Failed to initialize SSB bus (err %d)", err); |
1c0c13eb | 139 | |
08ccf572 | 140 | mcore = &bcm47xx_bus.ssb.mipscore; |
1690a7f9 HM |
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 | } | |
08ccf572 | 153 | } |
a656ffcb | 154 | #endif |
08ccf572 | 155 | |
c1d1c5d4 | 156 | #ifdef CONFIG_BCM47XX_BCMA |
f384b3dd HM |
157 | static 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: | |
5fe2e071 | 164 | memset(out, 0, sizeof(struct ssb_sprom)); |
f384b3dd HM |
165 | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", |
166 | bus->host_pci->bus->number + 1, | |
167 | PCI_SLOT(bus->host_pci->devfn)); | |
b8ebbaff | 168 | bcm47xx_fill_sprom(out, prefix, false); |
f384b3dd HM |
169 | return 0; |
170 | case BCMA_HOSTTYPE_SOC: | |
5fe2e071 | 171 | memset(out, 0, sizeof(struct ssb_sprom)); |
f384b3dd HM |
172 | core = bcma_find_core(bus, BCMA_CORE_80211); |
173 | if (core) { | |
174 | snprintf(prefix, sizeof(prefix), "sb/%u/", | |
175 | core->core_index); | |
b8ebbaff | 176 | bcm47xx_fill_sprom(out, prefix, true); |
2c376311 | 177 | } else { |
b8ebbaff | 178 | bcm47xx_fill_sprom(out, NULL, false); |
f384b3dd HM |
179 | } |
180 | return 0; | |
181 | default: | |
182 | pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n"); | |
183 | return -EINVAL; | |
184 | } | |
185 | } | |
186 | ||
c1d1c5d4 HM |
187 | static void __init bcm47xx_register_bcma(void) |
188 | { | |
189 | int err; | |
190 | ||
f384b3dd HM |
191 | 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 | ||
c1d1c5d4 HM |
195 | err = bcma_host_soc_register(&bcm47xx_bus.bcma); |
196 | if (err) | |
ab75dc02 | 197 | panic("Failed to initialize BCMA bus (err %d)", err); |
0a2fcaa7 HM |
198 | |
199 | bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL); | |
c1d1c5d4 HM |
200 | } |
201 | #endif | |
202 | ||
08ccf572 HM |
203 | void __init plat_mem_setup(void) |
204 | { | |
205 | struct cpuinfo_mips *c = ¤t_cpu_data; | |
206 | ||
c1d1c5d4 HM |
207 | if (c->cputype == CPU_74K) { |
208 | printk(KERN_INFO "bcm47xx: using bcma bus\n"); | |
209 | #ifdef CONFIG_BCM47XX_BCMA | |
210 | bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA; | |
211 | bcm47xx_register_bcma(); | |
212 | #endif | |
213 | } else { | |
214 | printk(KERN_INFO "bcm47xx: using ssb bus\n"); | |
a656ffcb | 215 | #ifdef CONFIG_BCM47XX_SSB |
c1d1c5d4 HM |
216 | bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB; |
217 | bcm47xx_register_ssb(); | |
a656ffcb | 218 | #endif |
c1d1c5d4 | 219 | } |
1690a7f9 | 220 | |
1c0c13eb AJ |
221 | _machine_restart = bcm47xx_machine_restart; |
222 | _machine_halt = bcm47xx_machine_halt; | |
223 | pm_power_off = bcm47xx_machine_halt; | |
1c0c13eb | 224 | } |
c1d1c5d4 HM |
225 | |
226 | static int __init bcm47xx_register_bus_complete(void) | |
227 | { | |
228 | switch (bcm47xx_bus_type) { | |
229 | #ifdef CONFIG_BCM47XX_SSB | |
230 | case BCM47XX_BUS_TYPE_SSB: | |
231 | /* Nothing to do */ | |
232 | break; | |
233 | #endif | |
234 | #ifdef CONFIG_BCM47XX_BCMA | |
235 | case BCM47XX_BUS_TYPE_BCMA: | |
236 | bcma_bus_register(&bcm47xx_bus.bcma.bus); | |
237 | break; | |
238 | #endif | |
239 | } | |
240 | return 0; | |
241 | } | |
242 | device_initcall(bcm47xx_register_bus_complete); |