1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
7 * 2006 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
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>
22 #include <linux/phy.h>
23 #include <linux/spi/spi.h>
24 #include <linux/fsl_devices.h>
25 #include <linux/fs_uart_pd.h>
26 #include <linux/reboot.h>
28 #include <linux/atomic.h>
32 #include <asm/machdep.h>
33 #include <sysdev/fsl_soc.h>
34 #include <mm/mmu_decl.h>
36 #include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */
38 extern void init_smc_ioports(struct fs_uart_platform_info*);
39 static phys_addr_t immrbase = -1;
41 phys_addr_t get_immrbase(void)
43 struct device_node *soc;
48 soc = of_find_node_by_type(NULL, "soc");
52 if (!of_range_to_resource(soc, 0, &res))
61 EXPORT_SYMBOL(get_immrbase);
63 u32 fsl_get_sys_freq(void)
65 static u32 sysfreq = -1;
66 struct device_node *soc;
71 soc = of_find_node_by_type(NULL, "soc");
75 of_property_read_u32(soc, "clock-frequency", &sysfreq);
76 if (sysfreq == -1 || !sysfreq)
77 of_property_read_u32(soc, "bus-frequency", &sysfreq);
82 EXPORT_SYMBOL(fsl_get_sys_freq);
84 #if defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE)
88 static u32 brgfreq = -1;
89 struct device_node *node;
94 node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
96 of_property_read_u32(node, "clock-frequency", &brgfreq);
101 /* Legacy device binding -- will go away when no users are left. */
102 node = of_find_node_by_type(NULL, "cpm");
104 node = of_find_compatible_node(NULL, NULL, "fsl,qe");
106 node = of_find_node_by_type(NULL, "qe");
109 of_property_read_u32(node, "brg-frequency", &brgfreq);
110 if (brgfreq == -1 || !brgfreq)
111 if (!of_property_read_u32(node, "bus-frequency",
120 EXPORT_SYMBOL(get_brgfreq);
122 u32 get_baudrate(void)
124 static u32 fs_baudrate = -1;
125 struct device_node *node;
127 if (fs_baudrate != -1)
130 node = of_find_node_by_type(NULL, "serial");
132 of_property_read_u32(node, "current-speed", &fs_baudrate);
139 EXPORT_SYMBOL(get_baudrate);
140 #endif /* CONFIG_CPM2 */
142 #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
143 static __be32 __iomem *rstcr;
145 static int fsl_rstcr_restart(struct notifier_block *this,
146 unsigned long mode, void *cmd)
149 /* set reset control register */
150 out_be32(rstcr, 0x2); /* HRESET_REQ */
155 static int __init setup_rstcr(void)
157 struct device_node *np;
159 static struct notifier_block restart_handler = {
160 .notifier_call = fsl_rstcr_restart,
164 for_each_node_by_name(np, "global-utilities") {
165 if (of_property_read_bool(np, "fsl,has-rstcr")) {
166 rstcr = of_iomap(np, 0) + 0xb0;
168 printk (KERN_ERR "Error: reset control "
169 "register not mapped!\n");
171 register_restart_handler(&restart_handler);
182 arch_initcall(setup_rstcr);
186 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
187 struct platform_diu_data_ops diu_ops;
188 EXPORT_SYMBOL(diu_ops);
191 #ifdef CONFIG_EPAPR_PARAVIRT
193 * Restart the current partition
195 * This function should be assigned to the ppc_md.restart function pointer,
196 * to initiate a partition restart when we're running under the Freescale
199 void __noreturn fsl_hv_restart(char *cmd)
201 pr_info("hv restart\n");
202 fh_partition_restart(-1);
207 * Halt the current partition
209 * This function should be assigned to the pm_power_off and ppc_md.halt
210 * function pointers, to shut down the partition when we're running under
211 * the Freescale hypervisor.
213 void __noreturn fsl_hv_halt(void)
215 pr_info("hv exit\n");
216 fh_partition_stop(-1);