4  * Copyright (c) 2011-2013 Xilinx Inc.
18 #include <linux/reboot.h>
29 #define SLCR_REBOOT_STATUS_OFFSET	0x258 /* PS Reboot Status */
43  * zynq_slcr_write - Write to a register in SLCR block
46  * @offset:	Register offset in SLCR block
50 static int zynq_slcr_write(u32 val, u32 offset)  in zynq_slcr_write()  argument
52 	return regmap_write(zynq_slcr_regmap, offset, val);  in zynq_slcr_write()
56  * zynq_slcr_read - Read a register in SLCR block
59  * @offset:	Register offset in SLCR block
63 static int zynq_slcr_read(u32 *val, u32 offset)  in zynq_slcr_read()  argument
65 	return regmap_read(zynq_slcr_regmap, offset, val);  in zynq_slcr_read()
69  * zynq_slcr_unlock - Unlock SLCR registers
81  * zynq_slcr_get_device_id - Read device code id
97  * zynq_slcr_system_restart - Restart the entire system.
100  * @action:	Reboot mode (unused)
109 	u32 reboot;  in zynq_slcr_system_restart()  local
112 	 * Clear 0x0F000000 bits of reboot status register to workaround  in zynq_slcr_system_restart()
113 	 * the FSBL not loading the bitstream after soft-reboot  in zynq_slcr_system_restart()
116 	zynq_slcr_read(&reboot, SLCR_REBOOT_STATUS_OFFSET);  in zynq_slcr_system_restart()
117 	zynq_slcr_write(reboot & 0xF0FFFFFF, SLCR_REBOOT_STATUS_OFFSET);  in zynq_slcr_system_restart()
128  * zynq_slcr_cpu_start - Start cpu
145  * zynq_slcr_cpu_stop - Stop cpu
158  * zynq_slcr_cpu_state - Read/write cpu state
171 	state &= 1 << (31 - cpu);  in zynq_slcr_cpu_state_read()
177  * zynq_slcr_cpu_state - Read/write cpu state
179  * @die:	cpu state - true if cpu is going to die
189 	mask = 1 << (31 - cpu);  in zynq_slcr_cpu_state_write()
198  * zynq_early_slcr_init - Early slcr init function
208 	np = of_find_compatible_node(NULL, NULL, "xlnx,zynq-slcr");  in zynq_early_slcr_init()
220 	np->data = (__force void *)zynq_slcr_base;  in zynq_early_slcr_init()
222 	zynq_slcr_regmap = syscon_regmap_lookup_by_compatible("xlnx,zynq-slcr");  in zynq_early_slcr_init()
224 		pr_err("%s: failed to find zynq-slcr\n", __func__);  in zynq_early_slcr_init()
225 		return -ENODEV;  in zynq_early_slcr_init()
236 	pr_info("%s mapped to %p\n", np->name, zynq_slcr_base);  in zynq_early_slcr_init()