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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * FSL SoC setup code
4 *
5 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
6 *
7 * 2006 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 */
10
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>
18#include <linux/export.h>
19#include <linux/device.h>
20#include <linux/platform_device.h>
21#include <linux/of.h>
22#include <linux/of_platform.h>
23#include <linux/phy.h>
24#include <linux/spi/spi.h>
25#include <linux/fsl_devices.h>
26#include <linux/fs_enet_pd.h>
27#include <linux/fs_uart_pd.h>
28#include <linux/reboot.h>
29
30#include <linux/atomic.h>
31#include <asm/io.h>
32#include <asm/irq.h>
33#include <asm/time.h>
34#include <asm/machdep.h>
35#include <sysdev/fsl_soc.h>
36#include <mm/mmu_decl.h>
37#include <asm/cpm2.h>
38#include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */
39
40extern void init_fcc_ioports(struct fs_platform_info*);
41extern void init_fec_ioports(struct fs_platform_info*);
42extern void init_smc_ioports(struct fs_uart_platform_info*);
43static phys_addr_t immrbase = -1;
44
45phys_addr_t get_immrbase(void)
46{
47 struct device_node *soc;
48
49 if (immrbase != -1)
50 return immrbase;
51
52 soc = of_find_node_by_type(NULL, "soc");
53 if (soc) {
54 int size;
55 u32 naddr;
56 const __be32 *prop = of_get_property(soc, "#address-cells", &size);
57
58 if (prop && size == 4)
59 naddr = be32_to_cpup(prop);
60 else
61 naddr = 2;
62
63 prop = of_get_property(soc, "ranges", &size);
64 if (prop)
65 immrbase = of_translate_address(soc, prop + naddr);
66
67 of_node_put(soc);
68 }
69
70 return immrbase;
71}
72
73EXPORT_SYMBOL(get_immrbase);
74
75u32 fsl_get_sys_freq(void)
76{
77 static u32 sysfreq = -1;
78 struct device_node *soc;
79
80 if (sysfreq != -1)
81 return sysfreq;
82
83 soc = of_find_node_by_type(NULL, "soc");
84 if (!soc)
85 return -1;
86
87 of_property_read_u32(soc, "clock-frequency", &sysfreq);
88 if (sysfreq == -1 || !sysfreq)
89 of_property_read_u32(soc, "bus-frequency", &sysfreq);
90
91 of_node_put(soc);
92 return sysfreq;
93}
94EXPORT_SYMBOL(fsl_get_sys_freq);
95
96#if defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE)
97
98u32 get_brgfreq(void)
99{
100 static u32 brgfreq = -1;
101 struct device_node *node;
102
103 if (brgfreq != -1)
104 return brgfreq;
105
106 node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
107 if (node) {
108 of_property_read_u32(node, "clock-frequency", &brgfreq);
109 of_node_put(node);
110 return brgfreq;
111 }
112
113 /* Legacy device binding -- will go away when no users are left. */
114 node = of_find_node_by_type(NULL, "cpm");
115 if (!node)
116 node = of_find_compatible_node(NULL, NULL, "fsl,qe");
117 if (!node)
118 node = of_find_node_by_type(NULL, "qe");
119
120 if (node) {
121 of_property_read_u32(node, "brg-frequency", &brgfreq);
122 if (brgfreq == -1 || !brgfreq)
123 if (!of_property_read_u32(node, "bus-frequency",
124 &brgfreq))
125 brgfreq /= 2;
126 of_node_put(node);
127 }
128
129 return brgfreq;
130}
131
132EXPORT_SYMBOL(get_brgfreq);
133
134u32 get_baudrate(void)
135{
136 static u32 fs_baudrate = -1;
137 struct device_node *node;
138
139 if (fs_baudrate != -1)
140 return fs_baudrate;
141
142 node = of_find_node_by_type(NULL, "serial");
143 if (node) {
144 of_property_read_u32(node, "current-speed", &fs_baudrate);
145 of_node_put(node);
146 }
147
148 return fs_baudrate;
149}
150
151EXPORT_SYMBOL(get_baudrate);
152#endif /* CONFIG_CPM2 */
153
154#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
155static __be32 __iomem *rstcr;
156
157static int fsl_rstcr_restart(struct notifier_block *this,
158 unsigned long mode, void *cmd)
159{
160 local_irq_disable();
161 /* set reset control register */
162 out_be32(rstcr, 0x2); /* HRESET_REQ */
163
164 return NOTIFY_DONE;
165}
166
167static int __init setup_rstcr(void)
168{
169 struct device_node *np;
170
171 static struct notifier_block restart_handler = {
172 .notifier_call = fsl_rstcr_restart,
173 .priority = 128,
174 };
175
176 for_each_node_by_name(np, "global-utilities") {
177 if ((of_get_property(np, "fsl,has-rstcr", NULL))) {
178 rstcr = of_iomap(np, 0) + 0xb0;
179 if (!rstcr) {
180 printk (KERN_ERR "Error: reset control "
181 "register not mapped!\n");
182 } else {
183 register_restart_handler(&restart_handler);
184 }
185 break;
186 }
187 }
188
189 of_node_put(np);
190
191 return 0;
192}
193
194arch_initcall(setup_rstcr);
195
196#endif
197
198#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
199struct platform_diu_data_ops diu_ops;
200EXPORT_SYMBOL(diu_ops);
201#endif
202
203#ifdef CONFIG_EPAPR_PARAVIRT
204/*
205 * Restart the current partition
206 *
207 * This function should be assigned to the ppc_md.restart function pointer,
208 * to initiate a partition restart when we're running under the Freescale
209 * hypervisor.
210 */
211void __noreturn fsl_hv_restart(char *cmd)
212{
213 pr_info("hv restart\n");
214 fh_partition_restart(-1);
215 while (1) ;
216}
217
218/*
219 * Halt the current partition
220 *
221 * This function should be assigned to the pm_power_off and ppc_md.halt
222 * function pointers, to shut down the partition when we're running under
223 * the Freescale hypervisor.
224 */
225void __noreturn fsl_hv_halt(void)
226{
227 pr_info("hv exit\n");
228 fh_partition_stop(-1);
229 while (1) ;
230}
231#endif
1/*
2 * FSL SoC setup code
3 *
4 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
5 *
6 * 2006 (c) MontaVista Software, Inc.
7 * Vitaly Bordug <vbordug@ru.mvista.com>
8 *
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
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>
22#include <linux/export.h>
23#include <linux/device.h>
24#include <linux/platform_device.h>
25#include <linux/of.h>
26#include <linux/of_platform.h>
27#include <linux/phy.h>
28#include <linux/phy_fixed.h>
29#include <linux/spi/spi.h>
30#include <linux/fsl_devices.h>
31#include <linux/fs_enet_pd.h>
32#include <linux/fs_uart_pd.h>
33
34#include <linux/atomic.h>
35#include <asm/io.h>
36#include <asm/irq.h>
37#include <asm/time.h>
38#include <asm/prom.h>
39#include <asm/machdep.h>
40#include <sysdev/fsl_soc.h>
41#include <mm/mmu_decl.h>
42#include <asm/cpm2.h>
43#include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */
44
45extern void init_fcc_ioports(struct fs_platform_info*);
46extern void init_fec_ioports(struct fs_platform_info*);
47extern void init_smc_ioports(struct fs_uart_platform_info*);
48static phys_addr_t immrbase = -1;
49
50phys_addr_t get_immrbase(void)
51{
52 struct device_node *soc;
53
54 if (immrbase != -1)
55 return immrbase;
56
57 soc = of_find_node_by_type(NULL, "soc");
58 if (soc) {
59 int size;
60 u32 naddr;
61 const __be32 *prop = of_get_property(soc, "#address-cells", &size);
62
63 if (prop && size == 4)
64 naddr = be32_to_cpup(prop);
65 else
66 naddr = 2;
67
68 prop = of_get_property(soc, "ranges", &size);
69 if (prop)
70 immrbase = of_translate_address(soc, prop + naddr);
71
72 of_node_put(soc);
73 }
74
75 return immrbase;
76}
77
78EXPORT_SYMBOL(get_immrbase);
79
80static u32 sysfreq = -1;
81
82u32 fsl_get_sys_freq(void)
83{
84 struct device_node *soc;
85 const u32 *prop;
86 int size;
87
88 if (sysfreq != -1)
89 return sysfreq;
90
91 soc = of_find_node_by_type(NULL, "soc");
92 if (!soc)
93 return -1;
94
95 prop = of_get_property(soc, "clock-frequency", &size);
96 if (!prop || size != sizeof(*prop) || *prop == 0)
97 prop = of_get_property(soc, "bus-frequency", &size);
98
99 if (prop && size == sizeof(*prop))
100 sysfreq = *prop;
101
102 of_node_put(soc);
103 return sysfreq;
104}
105EXPORT_SYMBOL(fsl_get_sys_freq);
106
107#if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
108
109static u32 brgfreq = -1;
110
111u32 get_brgfreq(void)
112{
113 struct device_node *node;
114 const unsigned int *prop;
115 int size;
116
117 if (brgfreq != -1)
118 return brgfreq;
119
120 node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
121 if (node) {
122 prop = of_get_property(node, "clock-frequency", &size);
123 if (prop && size == 4)
124 brgfreq = *prop;
125
126 of_node_put(node);
127 return brgfreq;
128 }
129
130 /* Legacy device binding -- will go away when no users are left. */
131 node = of_find_node_by_type(NULL, "cpm");
132 if (!node)
133 node = of_find_compatible_node(NULL, NULL, "fsl,qe");
134 if (!node)
135 node = of_find_node_by_type(NULL, "qe");
136
137 if (node) {
138 prop = of_get_property(node, "brg-frequency", &size);
139 if (prop && size == 4)
140 brgfreq = *prop;
141
142 if (brgfreq == -1 || brgfreq == 0) {
143 prop = of_get_property(node, "bus-frequency", &size);
144 if (prop && size == 4)
145 brgfreq = *prop / 2;
146 }
147 of_node_put(node);
148 }
149
150 return brgfreq;
151}
152
153EXPORT_SYMBOL(get_brgfreq);
154
155static u32 fs_baudrate = -1;
156
157u32 get_baudrate(void)
158{
159 struct device_node *node;
160
161 if (fs_baudrate != -1)
162 return fs_baudrate;
163
164 node = of_find_node_by_type(NULL, "serial");
165 if (node) {
166 int size;
167 const unsigned int *prop = of_get_property(node,
168 "current-speed", &size);
169
170 if (prop)
171 fs_baudrate = *prop;
172 of_node_put(node);
173 }
174
175 return fs_baudrate;
176}
177
178EXPORT_SYMBOL(get_baudrate);
179#endif /* CONFIG_CPM2 */
180
181#ifdef CONFIG_FIXED_PHY
182static int __init of_add_fixed_phys(void)
183{
184 int ret;
185 struct device_node *np;
186 u32 *fixed_link;
187 struct fixed_phy_status status = {};
188
189 for_each_node_by_name(np, "ethernet") {
190 fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL);
191 if (!fixed_link)
192 continue;
193
194 status.link = 1;
195 status.duplex = fixed_link[1];
196 status.speed = fixed_link[2];
197 status.pause = fixed_link[3];
198 status.asym_pause = fixed_link[4];
199
200 ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);
201 if (ret) {
202 of_node_put(np);
203 return ret;
204 }
205 }
206
207 return 0;
208}
209arch_initcall(of_add_fixed_phys);
210#endif /* CONFIG_FIXED_PHY */
211
212#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
213static __be32 __iomem *rstcr;
214
215static int __init setup_rstcr(void)
216{
217 struct device_node *np;
218
219 for_each_node_by_name(np, "global-utilities") {
220 if ((of_get_property(np, "fsl,has-rstcr", NULL))) {
221 rstcr = of_iomap(np, 0) + 0xb0;
222 if (!rstcr)
223 printk (KERN_ERR "Error: reset control "
224 "register not mapped!\n");
225 break;
226 }
227 }
228
229 if (!rstcr && ppc_md.restart == fsl_rstcr_restart)
230 printk(KERN_ERR "No RSTCR register, warm reboot won't work\n");
231
232 if (np)
233 of_node_put(np);
234
235 return 0;
236}
237
238arch_initcall(setup_rstcr);
239
240void fsl_rstcr_restart(char *cmd)
241{
242 local_irq_disable();
243 if (rstcr)
244 /* set reset control register */
245 out_be32(rstcr, 0x2); /* HRESET_REQ */
246
247 while (1) ;
248}
249#endif
250
251#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
252struct platform_diu_data_ops diu_ops;
253EXPORT_SYMBOL(diu_ops);
254#endif
255
256#ifdef CONFIG_EPAPR_PARAVIRT
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 */
264void 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 */
277void fsl_hv_halt(void)
278{
279 pr_info("hv exit\n");
280 fh_partition_stop(-1);
281}
282#endif