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eed32001 KG |
1 | /* |
2 | * FSL SoC setup code | |
3 | * | |
4 | * Maintained by Kumar Gala (see MAINTAINERS for contact information) | |
5 | * | |
fba43665 VB |
6 | * 2006 (c) MontaVista Software, Inc. |
7 | * Vitaly Bordug <vbordug@ru.mvista.com> | |
8 | * | |
eed32001 KG |
9 | * This program is free software; you can redistribute it and/or modify it |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | */ | |
14 | ||
eed32001 KG |
15 | #include <linux/stddef.h> |
16 | #include <linux/kernel.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/errno.h> | |
19 | #include <linux/major.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/irq.h> | |
4b16f8e2 | 22 | #include <linux/export.h> |
eed32001 KG |
23 | #include <linux/device.h> |
24 | #include <linux/platform_device.h> | |
c026c987 | 25 | #include <linux/of.h> |
0af666fa | 26 | #include <linux/of_platform.h> |
a9b14973 | 27 | #include <linux/phy.h> |
a21e282a | 28 | #include <linux/phy_fixed.h> |
26f6cb99 | 29 | #include <linux/spi/spi.h> |
eed32001 | 30 | #include <linux/fsl_devices.h> |
fba43665 VB |
31 | #include <linux/fs_enet_pd.h> |
32 | #include <linux/fs_uart_pd.h> | |
eed32001 KG |
33 | |
34 | #include <asm/system.h> | |
60063497 | 35 | #include <linux/atomic.h> |
eed32001 KG |
36 | #include <asm/io.h> |
37 | #include <asm/irq.h> | |
fba43665 | 38 | #include <asm/time.h> |
eed32001 | 39 | #include <asm/prom.h> |
46c4c229 | 40 | #include <asm/machdep.h> |
eed32001 KG |
41 | #include <sysdev/fsl_soc.h> |
42 | #include <mm/mmu_decl.h> | |
fba43665 | 43 | #include <asm/cpm2.h> |
d173ea6b | 44 | #include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */ |
eed32001 | 45 | |
d3465c92 | 46 | extern void init_fcc_ioports(struct fs_platform_info*); |
88bdc6f0 VB |
47 | extern void init_fec_ioports(struct fs_platform_info*); |
48 | extern void init_smc_ioports(struct fs_uart_platform_info*); | |
eed32001 KG |
49 | static phys_addr_t immrbase = -1; |
50 | ||
51 | phys_addr_t get_immrbase(void) | |
52 | { | |
53 | struct device_node *soc; | |
54 | ||
55 | if (immrbase != -1) | |
56 | return immrbase; | |
57 | ||
58 | soc = of_find_node_by_type(NULL, "soc"); | |
2fb07d77 | 59 | if (soc) { |
f9234736 | 60 | int size; |
6c7e072b SW |
61 | u32 naddr; |
62 | const u32 *prop = of_get_property(soc, "#address-cells", &size); | |
fba43665 | 63 | |
6c7e072b SW |
64 | if (prop && size == 4) |
65 | naddr = *prop; | |
66 | else | |
67 | naddr = 2; | |
68 | ||
69 | prop = of_get_property(soc, "ranges", &size); | |
fba43665 | 70 | if (prop) |
6c7e072b SW |
71 | immrbase = of_translate_address(soc, prop + naddr); |
72 | ||
eed32001 | 73 | of_node_put(soc); |
f9234736 | 74 | } |
eed32001 KG |
75 | |
76 | return immrbase; | |
77 | } | |
eed32001 | 78 | |
2fb07d77 | 79 | EXPORT_SYMBOL(get_immrbase); |
eed32001 | 80 | |
38664095 SW |
81 | static u32 sysfreq = -1; |
82 | ||
83 | u32 fsl_get_sys_freq(void) | |
84 | { | |
85 | struct device_node *soc; | |
86 | const u32 *prop; | |
87 | int size; | |
88 | ||
89 | if (sysfreq != -1) | |
90 | return sysfreq; | |
91 | ||
92 | soc = of_find_node_by_type(NULL, "soc"); | |
93 | if (!soc) | |
94 | return -1; | |
95 | ||
96 | prop = of_get_property(soc, "clock-frequency", &size); | |
97 | if (!prop || size != sizeof(*prop) || *prop == 0) | |
98 | prop = of_get_property(soc, "bus-frequency", &size); | |
99 | ||
100 | if (prop && size == sizeof(*prop)) | |
101 | sysfreq = *prop; | |
102 | ||
103 | of_node_put(soc); | |
104 | return sysfreq; | |
105 | } | |
106 | EXPORT_SYMBOL(fsl_get_sys_freq); | |
107 | ||
59a0ea50 | 108 | #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx) |
fba43665 VB |
109 | |
110 | static u32 brgfreq = -1; | |
111 | ||
112 | u32 get_brgfreq(void) | |
113 | { | |
114 | struct device_node *node; | |
6d817aa7 SW |
115 | const unsigned int *prop; |
116 | int size; | |
fba43665 VB |
117 | |
118 | if (brgfreq != -1) | |
119 | return brgfreq; | |
120 | ||
6d817aa7 | 121 | node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg"); |
fba43665 | 122 | if (node) { |
6d817aa7 SW |
123 | prop = of_get_property(node, "clock-frequency", &size); |
124 | if (prop && size == 4) | |
125 | brgfreq = *prop; | |
126 | ||
127 | of_node_put(node); | |
128 | return brgfreq; | |
129 | } | |
fba43665 | 130 | |
6d817aa7 SW |
131 | /* Legacy device binding -- will go away when no users are left. */ |
132 | node = of_find_node_by_type(NULL, "cpm"); | |
59a0ea50 AV |
133 | if (!node) |
134 | node = of_find_compatible_node(NULL, NULL, "fsl,qe"); | |
135 | if (!node) | |
136 | node = of_find_node_by_type(NULL, "qe"); | |
137 | ||
6d817aa7 SW |
138 | if (node) { |
139 | prop = of_get_property(node, "brg-frequency", &size); | |
f9234736 | 140 | if (prop && size == 4) |
fba43665 | 141 | brgfreq = *prop; |
f9234736 | 142 | |
59a0ea50 AV |
143 | if (brgfreq == -1 || brgfreq == 0) { |
144 | prop = of_get_property(node, "bus-frequency", &size); | |
145 | if (prop && size == 4) | |
146 | brgfreq = *prop / 2; | |
147 | } | |
fba43665 | 148 | of_node_put(node); |
f9234736 | 149 | } |
fba43665 VB |
150 | |
151 | return brgfreq; | |
152 | } | |
153 | ||
154 | EXPORT_SYMBOL(get_brgfreq); | |
155 | ||
156 | static u32 fs_baudrate = -1; | |
157 | ||
158 | u32 get_baudrate(void) | |
159 | { | |
160 | struct device_node *node; | |
161 | ||
162 | if (fs_baudrate != -1) | |
163 | return fs_baudrate; | |
164 | ||
165 | node = of_find_node_by_type(NULL, "serial"); | |
166 | if (node) { | |
f9234736 | 167 | int size; |
e2eb6392 SR |
168 | const unsigned int *prop = of_get_property(node, |
169 | "current-speed", &size); | |
fba43665 VB |
170 | |
171 | if (prop) | |
172 | fs_baudrate = *prop; | |
173 | of_node_put(node); | |
f9234736 | 174 | } |
fba43665 VB |
175 | |
176 | return fs_baudrate; | |
177 | } | |
178 | ||
179 | EXPORT_SYMBOL(get_baudrate); | |
180 | #endif /* CONFIG_CPM2 */ | |
181 | ||
a21e282a VB |
182 | #ifdef CONFIG_FIXED_PHY |
183 | static int __init of_add_fixed_phys(void) | |
184 | { | |
185 | int ret; | |
186 | struct device_node *np; | |
187 | u32 *fixed_link; | |
188 | struct fixed_phy_status status = {}; | |
189 | ||
190 | for_each_node_by_name(np, "ethernet") { | |
191 | fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL); | |
192 | if (!fixed_link) | |
193 | continue; | |
194 | ||
195 | status.link = 1; | |
196 | status.duplex = fixed_link[1]; | |
197 | status.speed = fixed_link[2]; | |
198 | status.pause = fixed_link[3]; | |
199 | status.asym_pause = fixed_link[4]; | |
200 | ||
201 | ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status); | |
202 | if (ret) { | |
203 | of_node_put(np); | |
204 | return ret; | |
205 | } | |
206 | } | |
207 | ||
208 | return 0; | |
209 | } | |
210 | arch_initcall(of_add_fixed_phys); | |
211 | #endif /* CONFIG_FIXED_PHY */ | |
212 | ||
5753c082 | 213 | #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) |
e1c1575f KG |
214 | static __be32 __iomem *rstcr; |
215 | ||
216 | static int __init setup_rstcr(void) | |
217 | { | |
218 | struct device_node *np; | |
4ea7c88b MM |
219 | |
220 | for_each_node_by_name(np, "global-utilities") { | |
221 | if ((of_get_property(np, "fsl,has-rstcr", NULL))) { | |
222 | rstcr = of_iomap(np, 0) + 0xb0; | |
223 | if (!rstcr) | |
224 | printk (KERN_ERR "Error: reset control " | |
225 | "register not mapped!\n"); | |
226 | break; | |
227 | } | |
228 | } | |
229 | ||
230 | if (!rstcr && ppc_md.restart == fsl_rstcr_restart) | |
46c4c229 PG |
231 | printk(KERN_ERR "No RSTCR register, warm reboot won't work\n"); |
232 | ||
e1c1575f KG |
233 | if (np) |
234 | of_node_put(np); | |
4ea7c88b | 235 | |
e1c1575f KG |
236 | return 0; |
237 | } | |
238 | ||
239 | arch_initcall(setup_rstcr); | |
240 | ||
241 | void fsl_rstcr_restart(char *cmd) | |
242 | { | |
243 | local_irq_disable(); | |
244 | if (rstcr) | |
245 | /* set reset control register */ | |
246 | out_be32(rstcr, 0x2); /* HRESET_REQ */ | |
247 | ||
248 | while (1) ; | |
249 | } | |
250 | #endif | |
6f90a8bd YS |
251 | |
252 | #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE) | |
43c9f434 | 253 | struct platform_diu_data_ops diu_ops; |
6f90a8bd | 254 | EXPORT_SYMBOL(diu_ops); |
6f90a8bd | 255 | #endif |
d173ea6b TT |
256 | |
257 | /* | |
258 | * Restart the current partition | |
259 | * | |
260 | * This function should be assigned to the ppc_md.restart function pointer, | |
261 | * to initiate a partition restart when we're running under the Freescale | |
262 | * hypervisor. | |
263 | */ | |
264 | void fsl_hv_restart(char *cmd) | |
265 | { | |
266 | pr_info("hv restart\n"); | |
267 | fh_partition_restart(-1); | |
268 | } | |
269 | ||
270 | /* | |
271 | * Halt the current partition | |
272 | * | |
273 | * This function should be assigned to the ppc_md.power_off and ppc_md.halt | |
274 | * function pointers, to shut down the partition when we're running under | |
275 | * the Freescale hypervisor. | |
276 | */ | |
277 | void fsl_hv_halt(void) | |
278 | { | |
279 | pr_info("hv exit\n"); | |
280 | fh_partition_stop(-1); | |
281 | } |