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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> |
26f6cb99 | 28 | #include <linux/spi/spi.h> |
eed32001 | 29 | #include <linux/fsl_devices.h> |
fba43665 VB |
30 | #include <linux/fs_enet_pd.h> |
31 | #include <linux/fs_uart_pd.h> | |
eed32001 | 32 | |
60063497 | 33 | #include <linux/atomic.h> |
eed32001 KG |
34 | #include <asm/io.h> |
35 | #include <asm/irq.h> | |
fba43665 | 36 | #include <asm/time.h> |
eed32001 | 37 | #include <asm/prom.h> |
46c4c229 | 38 | #include <asm/machdep.h> |
eed32001 KG |
39 | #include <sysdev/fsl_soc.h> |
40 | #include <mm/mmu_decl.h> | |
fba43665 | 41 | #include <asm/cpm2.h> |
d173ea6b | 42 | #include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */ |
eed32001 | 43 | |
d3465c92 | 44 | extern void init_fcc_ioports(struct fs_platform_info*); |
88bdc6f0 VB |
45 | extern void init_fec_ioports(struct fs_platform_info*); |
46 | extern void init_smc_ioports(struct fs_uart_platform_info*); | |
eed32001 KG |
47 | static phys_addr_t immrbase = -1; |
48 | ||
49 | phys_addr_t get_immrbase(void) | |
50 | { | |
51 | struct device_node *soc; | |
52 | ||
53 | if (immrbase != -1) | |
54 | return immrbase; | |
55 | ||
56 | soc = of_find_node_by_type(NULL, "soc"); | |
2fb07d77 | 57 | if (soc) { |
f9234736 | 58 | int size; |
6c7e072b | 59 | u32 naddr; |
8443cc14 | 60 | const __be32 *prop = of_get_property(soc, "#address-cells", &size); |
fba43665 | 61 | |
6c7e072b | 62 | if (prop && size == 4) |
8443cc14 | 63 | naddr = be32_to_cpup(prop); |
6c7e072b SW |
64 | else |
65 | naddr = 2; | |
66 | ||
67 | prop = of_get_property(soc, "ranges", &size); | |
fba43665 | 68 | if (prop) |
6c7e072b SW |
69 | immrbase = of_translate_address(soc, prop + naddr); |
70 | ||
eed32001 | 71 | of_node_put(soc); |
f9234736 | 72 | } |
eed32001 KG |
73 | |
74 | return immrbase; | |
75 | } | |
eed32001 | 76 | |
2fb07d77 | 77 | EXPORT_SYMBOL(get_immrbase); |
eed32001 | 78 | |
38664095 SW |
79 | static u32 sysfreq = -1; |
80 | ||
81 | u32 fsl_get_sys_freq(void) | |
82 | { | |
83 | struct device_node *soc; | |
84 | const u32 *prop; | |
85 | int size; | |
86 | ||
87 | if (sysfreq != -1) | |
88 | return sysfreq; | |
89 | ||
90 | soc = of_find_node_by_type(NULL, "soc"); | |
91 | if (!soc) | |
92 | return -1; | |
93 | ||
94 | prop = of_get_property(soc, "clock-frequency", &size); | |
95 | if (!prop || size != sizeof(*prop) || *prop == 0) | |
96 | prop = of_get_property(soc, "bus-frequency", &size); | |
97 | ||
98 | if (prop && size == sizeof(*prop)) | |
99 | sysfreq = *prop; | |
100 | ||
101 | of_node_put(soc); | |
102 | return sysfreq; | |
103 | } | |
104 | EXPORT_SYMBOL(fsl_get_sys_freq); | |
105 | ||
59a0ea50 | 106 | #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx) |
fba43665 VB |
107 | |
108 | static u32 brgfreq = -1; | |
109 | ||
110 | u32 get_brgfreq(void) | |
111 | { | |
112 | struct device_node *node; | |
6d817aa7 SW |
113 | const unsigned int *prop; |
114 | int size; | |
fba43665 VB |
115 | |
116 | if (brgfreq != -1) | |
117 | return brgfreq; | |
118 | ||
6d817aa7 | 119 | node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg"); |
fba43665 | 120 | if (node) { |
6d817aa7 SW |
121 | prop = of_get_property(node, "clock-frequency", &size); |
122 | if (prop && size == 4) | |
123 | brgfreq = *prop; | |
124 | ||
125 | of_node_put(node); | |
126 | return brgfreq; | |
127 | } | |
fba43665 | 128 | |
6d817aa7 SW |
129 | /* Legacy device binding -- will go away when no users are left. */ |
130 | node = of_find_node_by_type(NULL, "cpm"); | |
59a0ea50 AV |
131 | if (!node) |
132 | node = of_find_compatible_node(NULL, NULL, "fsl,qe"); | |
133 | if (!node) | |
134 | node = of_find_node_by_type(NULL, "qe"); | |
135 | ||
6d817aa7 SW |
136 | if (node) { |
137 | prop = of_get_property(node, "brg-frequency", &size); | |
f9234736 | 138 | if (prop && size == 4) |
fba43665 | 139 | brgfreq = *prop; |
f9234736 | 140 | |
59a0ea50 AV |
141 | if (brgfreq == -1 || brgfreq == 0) { |
142 | prop = of_get_property(node, "bus-frequency", &size); | |
143 | if (prop && size == 4) | |
144 | brgfreq = *prop / 2; | |
145 | } | |
fba43665 | 146 | of_node_put(node); |
f9234736 | 147 | } |
fba43665 VB |
148 | |
149 | return brgfreq; | |
150 | } | |
151 | ||
152 | EXPORT_SYMBOL(get_brgfreq); | |
153 | ||
154 | static u32 fs_baudrate = -1; | |
155 | ||
156 | u32 get_baudrate(void) | |
157 | { | |
158 | struct device_node *node; | |
159 | ||
160 | if (fs_baudrate != -1) | |
161 | return fs_baudrate; | |
162 | ||
163 | node = of_find_node_by_type(NULL, "serial"); | |
164 | if (node) { | |
f9234736 | 165 | int size; |
e2eb6392 SR |
166 | const unsigned int *prop = of_get_property(node, |
167 | "current-speed", &size); | |
fba43665 VB |
168 | |
169 | if (prop) | |
170 | fs_baudrate = *prop; | |
171 | of_node_put(node); | |
f9234736 | 172 | } |
fba43665 VB |
173 | |
174 | return fs_baudrate; | |
175 | } | |
176 | ||
177 | EXPORT_SYMBOL(get_baudrate); | |
178 | #endif /* CONFIG_CPM2 */ | |
179 | ||
5753c082 | 180 | #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) |
e1c1575f KG |
181 | static __be32 __iomem *rstcr; |
182 | ||
183 | static int __init setup_rstcr(void) | |
184 | { | |
185 | struct device_node *np; | |
4ea7c88b MM |
186 | |
187 | for_each_node_by_name(np, "global-utilities") { | |
188 | if ((of_get_property(np, "fsl,has-rstcr", NULL))) { | |
189 | rstcr = of_iomap(np, 0) + 0xb0; | |
190 | if (!rstcr) | |
191 | printk (KERN_ERR "Error: reset control " | |
192 | "register not mapped!\n"); | |
193 | break; | |
194 | } | |
195 | } | |
196 | ||
197 | if (!rstcr && ppc_md.restart == fsl_rstcr_restart) | |
46c4c229 PG |
198 | printk(KERN_ERR "No RSTCR register, warm reboot won't work\n"); |
199 | ||
e1c1575f KG |
200 | if (np) |
201 | of_node_put(np); | |
4ea7c88b | 202 | |
e1c1575f KG |
203 | return 0; |
204 | } | |
205 | ||
206 | arch_initcall(setup_rstcr); | |
207 | ||
208 | void fsl_rstcr_restart(char *cmd) | |
209 | { | |
210 | local_irq_disable(); | |
211 | if (rstcr) | |
212 | /* set reset control register */ | |
213 | out_be32(rstcr, 0x2); /* HRESET_REQ */ | |
214 | ||
215 | while (1) ; | |
216 | } | |
217 | #endif | |
6f90a8bd YS |
218 | |
219 | #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE) | |
43c9f434 | 220 | struct platform_diu_data_ops diu_ops; |
6f90a8bd | 221 | EXPORT_SYMBOL(diu_ops); |
6f90a8bd | 222 | #endif |
d173ea6b | 223 | |
305bcf26 | 224 | #ifdef CONFIG_EPAPR_PARAVIRT |
d173ea6b TT |
225 | /* |
226 | * Restart the current partition | |
227 | * | |
228 | * This function should be assigned to the ppc_md.restart function pointer, | |
229 | * to initiate a partition restart when we're running under the Freescale | |
230 | * hypervisor. | |
231 | */ | |
232 | void fsl_hv_restart(char *cmd) | |
233 | { | |
234 | pr_info("hv restart\n"); | |
235 | fh_partition_restart(-1); | |
236 | } | |
237 | ||
238 | /* | |
239 | * Halt the current partition | |
240 | * | |
241 | * This function should be assigned to the ppc_md.power_off and ppc_md.halt | |
242 | * function pointers, to shut down the partition when we're running under | |
243 | * the Freescale hypervisor. | |
244 | */ | |
245 | void fsl_hv_halt(void) | |
246 | { | |
247 | pr_info("hv exit\n"); | |
248 | fh_partition_stop(-1); | |
249 | } | |
305bcf26 | 250 | #endif |