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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
eed32001 KG |
2 | /* |
3 | * FSL SoC setup code | |
4 | * | |
5 | * Maintained by Kumar Gala (see MAINTAINERS for contact information) | |
6 | * | |
fba43665 VB |
7 | * 2006 (c) MontaVista Software, Inc. |
8 | * Vitaly Bordug <vbordug@ru.mvista.com> | |
eed32001 KG |
9 | */ |
10 | ||
eed32001 KG |
11 | #include <linux/stddef.h> |
12 | #include <linux/kernel.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/errno.h> | |
15 | #include <linux/major.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/irq.h> | |
4b16f8e2 | 18 | #include <linux/export.h> |
eed32001 KG |
19 | #include <linux/device.h> |
20 | #include <linux/platform_device.h> | |
c026c987 | 21 | #include <linux/of.h> |
0af666fa | 22 | #include <linux/of_platform.h> |
a9b14973 | 23 | #include <linux/phy.h> |
26f6cb99 | 24 | #include <linux/spi/spi.h> |
eed32001 | 25 | #include <linux/fsl_devices.h> |
fba43665 VB |
26 | #include <linux/fs_enet_pd.h> |
27 | #include <linux/fs_uart_pd.h> | |
7120438e | 28 | #include <linux/reboot.h> |
eed32001 | 29 | |
60063497 | 30 | #include <linux/atomic.h> |
eed32001 KG |
31 | #include <asm/io.h> |
32 | #include <asm/irq.h> | |
fba43665 | 33 | #include <asm/time.h> |
eed32001 | 34 | #include <asm/prom.h> |
46c4c229 | 35 | #include <asm/machdep.h> |
eed32001 KG |
36 | #include <sysdev/fsl_soc.h> |
37 | #include <mm/mmu_decl.h> | |
fba43665 | 38 | #include <asm/cpm2.h> |
d173ea6b | 39 | #include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */ |
eed32001 | 40 | |
d3465c92 | 41 | extern void init_fcc_ioports(struct fs_platform_info*); |
88bdc6f0 VB |
42 | extern void init_fec_ioports(struct fs_platform_info*); |
43 | extern void init_smc_ioports(struct fs_uart_platform_info*); | |
eed32001 KG |
44 | static phys_addr_t immrbase = -1; |
45 | ||
46 | phys_addr_t get_immrbase(void) | |
47 | { | |
48 | struct device_node *soc; | |
49 | ||
50 | if (immrbase != -1) | |
51 | return immrbase; | |
52 | ||
53 | soc = of_find_node_by_type(NULL, "soc"); | |
2fb07d77 | 54 | if (soc) { |
f9234736 | 55 | int size; |
6c7e072b | 56 | u32 naddr; |
8443cc14 | 57 | const __be32 *prop = of_get_property(soc, "#address-cells", &size); |
fba43665 | 58 | |
6c7e072b | 59 | if (prop && size == 4) |
8443cc14 | 60 | naddr = be32_to_cpup(prop); |
6c7e072b SW |
61 | else |
62 | naddr = 2; | |
63 | ||
64 | prop = of_get_property(soc, "ranges", &size); | |
fba43665 | 65 | if (prop) |
6c7e072b SW |
66 | immrbase = of_translate_address(soc, prop + naddr); |
67 | ||
eed32001 | 68 | of_node_put(soc); |
f9234736 | 69 | } |
eed32001 KG |
70 | |
71 | return immrbase; | |
72 | } | |
eed32001 | 73 | |
2fb07d77 | 74 | EXPORT_SYMBOL(get_immrbase); |
eed32001 | 75 | |
38664095 SW |
76 | u32 fsl_get_sys_freq(void) |
77 | { | |
5bda6c0e | 78 | static u32 sysfreq = -1; |
38664095 | 79 | struct device_node *soc; |
38664095 SW |
80 | |
81 | if (sysfreq != -1) | |
82 | return sysfreq; | |
83 | ||
84 | soc = of_find_node_by_type(NULL, "soc"); | |
85 | if (!soc) | |
86 | return -1; | |
87 | ||
5bda6c0e HK |
88 | of_property_read_u32(soc, "clock-frequency", &sysfreq); |
89 | if (sysfreq == -1 || !sysfreq) | |
90 | of_property_read_u32(soc, "bus-frequency", &sysfreq); | |
38664095 SW |
91 | |
92 | of_node_put(soc); | |
93 | return sysfreq; | |
94 | } | |
95 | EXPORT_SYMBOL(fsl_get_sys_freq); | |
96 | ||
ea16e83a | 97 | #if defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE) |
fba43665 | 98 | |
fba43665 VB |
99 | u32 get_brgfreq(void) |
100 | { | |
47a48a92 | 101 | static u32 brgfreq = -1; |
fba43665 VB |
102 | struct device_node *node; |
103 | ||
104 | if (brgfreq != -1) | |
105 | return brgfreq; | |
106 | ||
6d817aa7 | 107 | node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg"); |
fba43665 | 108 | if (node) { |
47a48a92 | 109 | of_property_read_u32(node, "clock-frequency", &brgfreq); |
6d817aa7 SW |
110 | of_node_put(node); |
111 | return brgfreq; | |
112 | } | |
fba43665 | 113 | |
6d817aa7 SW |
114 | /* Legacy device binding -- will go away when no users are left. */ |
115 | node = of_find_node_by_type(NULL, "cpm"); | |
59a0ea50 AV |
116 | if (!node) |
117 | node = of_find_compatible_node(NULL, NULL, "fsl,qe"); | |
118 | if (!node) | |
119 | node = of_find_node_by_type(NULL, "qe"); | |
120 | ||
6d817aa7 | 121 | if (node) { |
47a48a92 HK |
122 | of_property_read_u32(node, "brg-frequency", &brgfreq); |
123 | if (brgfreq == -1 || !brgfreq) | |
124 | if (!of_property_read_u32(node, "bus-frequency", | |
125 | &brgfreq)) | |
126 | brgfreq /= 2; | |
fba43665 | 127 | of_node_put(node); |
f9234736 | 128 | } |
fba43665 VB |
129 | |
130 | return brgfreq; | |
131 | } | |
132 | ||
133 | EXPORT_SYMBOL(get_brgfreq); | |
134 | ||
fba43665 VB |
135 | u32 get_baudrate(void) |
136 | { | |
0f236988 | 137 | static u32 fs_baudrate = -1; |
fba43665 VB |
138 | struct device_node *node; |
139 | ||
140 | if (fs_baudrate != -1) | |
141 | return fs_baudrate; | |
142 | ||
143 | node = of_find_node_by_type(NULL, "serial"); | |
144 | if (node) { | |
0f236988 | 145 | of_property_read_u32(node, "current-speed", &fs_baudrate); |
fba43665 | 146 | of_node_put(node); |
f9234736 | 147 | } |
fba43665 VB |
148 | |
149 | return fs_baudrate; | |
150 | } | |
151 | ||
152 | EXPORT_SYMBOL(get_baudrate); | |
153 | #endif /* CONFIG_CPM2 */ | |
154 | ||
5753c082 | 155 | #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) |
e1c1575f KG |
156 | static __be32 __iomem *rstcr; |
157 | ||
7120438e AS |
158 | static int fsl_rstcr_restart(struct notifier_block *this, |
159 | unsigned long mode, void *cmd) | |
160 | { | |
161 | local_irq_disable(); | |
162 | /* set reset control register */ | |
163 | out_be32(rstcr, 0x2); /* HRESET_REQ */ | |
164 | ||
165 | return NOTIFY_DONE; | |
166 | } | |
167 | ||
e1c1575f KG |
168 | static int __init setup_rstcr(void) |
169 | { | |
170 | struct device_node *np; | |
4ea7c88b | 171 | |
7120438e AS |
172 | static struct notifier_block restart_handler = { |
173 | .notifier_call = fsl_rstcr_restart, | |
174 | .priority = 128, | |
175 | }; | |
176 | ||
4ea7c88b MM |
177 | for_each_node_by_name(np, "global-utilities") { |
178 | if ((of_get_property(np, "fsl,has-rstcr", NULL))) { | |
179 | rstcr = of_iomap(np, 0) + 0xb0; | |
7120438e | 180 | if (!rstcr) { |
4ea7c88b MM |
181 | printk (KERN_ERR "Error: reset control " |
182 | "register not mapped!\n"); | |
7120438e AS |
183 | } else { |
184 | register_restart_handler(&restart_handler); | |
185 | } | |
4ea7c88b MM |
186 | break; |
187 | } | |
188 | } | |
189 | ||
4cdd641d | 190 | of_node_put(np); |
4ea7c88b | 191 | |
e1c1575f KG |
192 | return 0; |
193 | } | |
194 | ||
195 | arch_initcall(setup_rstcr); | |
196 | ||
e1c1575f | 197 | #endif |
6f90a8bd YS |
198 | |
199 | #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE) | |
43c9f434 | 200 | struct platform_diu_data_ops diu_ops; |
6f90a8bd | 201 | EXPORT_SYMBOL(diu_ops); |
6f90a8bd | 202 | #endif |
d173ea6b | 203 | |
305bcf26 | 204 | #ifdef CONFIG_EPAPR_PARAVIRT |
d173ea6b TT |
205 | /* |
206 | * Restart the current partition | |
207 | * | |
208 | * This function should be assigned to the ppc_md.restart function pointer, | |
209 | * to initiate a partition restart when we're running under the Freescale | |
210 | * hypervisor. | |
211 | */ | |
95ec77c0 | 212 | void __noreturn fsl_hv_restart(char *cmd) |
d173ea6b TT |
213 | { |
214 | pr_info("hv restart\n"); | |
215 | fh_partition_restart(-1); | |
95ec77c0 | 216 | while (1) ; |
d173ea6b TT |
217 | } |
218 | ||
219 | /* | |
220 | * Halt the current partition | |
221 | * | |
9178ba29 | 222 | * This function should be assigned to the pm_power_off and ppc_md.halt |
d173ea6b TT |
223 | * function pointers, to shut down the partition when we're running under |
224 | * the Freescale hypervisor. | |
225 | */ | |
95ec77c0 | 226 | void __noreturn fsl_hv_halt(void) |
d173ea6b TT |
227 | { |
228 | pr_info("hv exit\n"); | |
229 | fh_partition_stop(-1); | |
95ec77c0 | 230 | while (1) ; |
d173ea6b | 231 | } |
305bcf26 | 232 | #endif |