1 // SPDX-License-Identifier: GPL-2.0
7 // S3C series CPU initialisation
26 #include "cpu.h"
29 static struct cpu_table *cpu;  variable
35 	for (; count != 0; count--, tab++) {  in s3c_lookup_cpu()
36 		if ((idcode & tab->idmask) == (tab->idcode & tab->idmask))  in s3c_lookup_cpu()
46 	cpu = s3c_lookup_cpu(idcode, cputab, cputab_size);  in s3c_init_cpu()
48 	if (cpu == NULL) {  in s3c_init_cpu()
49 		printk(KERN_ERR "Unknown CPU type 0x%08lx\n", idcode);  in s3c_init_cpu()
50 		panic("Unknown S3C24XX CPU");  in s3c_init_cpu()
53 	printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);  in s3c_init_cpu()
55 	if (cpu->init == NULL) {  in s3c_init_cpu()
56 		printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);  in s3c_init_cpu()
57 		panic("Unsupported Samsung CPU");  in s3c_init_cpu()
60 	if (cpu->map_io)  in s3c_init_cpu()
61 		cpu->map_io();  in s3c_init_cpu()
69  * xtal  = 0 -> use default PLL crystal value (normally 12MHz)
70  *      != 0 -> PLL crystal value in Hz
78 	if (cpu == NULL)  in s3c24xx_init_clocks()
79 		panic("s3c24xx_init_clocks: no cpu setup?\n");  in s3c24xx_init_clocks()
81 	if (cpu->init_clocks == NULL)  in s3c24xx_init_clocks()
82 		panic("s3c24xx_init_clocks: cpu has no clock init\n");  in s3c24xx_init_clocks()
84 		(cpu->init_clocks)(xtal);  in s3c24xx_init_clocks()
106 				  struct s3c2410_uartcfg *cfg, int no)  in s3c24xx_init_uartdevs()  argument
114 	memcpy(cfgptr, cfg, sizeof(struct s3c2410_uartcfg) * no);  in s3c24xx_init_uartdevs()
116 	for (uart = 0; uart < no; uart++, cfg++, cfgptr++) {  in s3c24xx_init_uartdevs()
117 		platdev = s3c24xx_uart_src[cfgptr->hwport];  in s3c24xx_init_uartdevs()
119 		resp = res + cfgptr->hwport;  in s3c24xx_init_uartdevs()
123 		platdev->name = name;  in s3c24xx_init_uartdevs()
124 		platdev->resource = resp->resources;  in s3c24xx_init_uartdevs()
125 		platdev->num_resources = resp->nr_resources;  in s3c24xx_init_uartdevs()
127 		platdev->dev.platform_data = cfgptr;  in s3c24xx_init_uartdevs()
134 void __init s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no)  in s3c24xx_init_uarts()  argument
136 	if (cpu == NULL)  in s3c24xx_init_uarts()
139 	if (cpu->init_uarts == NULL && IS_ENABLED(CONFIG_SAMSUNG_ATAGS)) {  in s3c24xx_init_uarts()
140 		printk(KERN_ERR "s3c24xx_init_uarts: cpu has no uart init\n");  in s3c24xx_init_uarts()
142 		(cpu->init_uarts)(cfg, no);  in s3c24xx_init_uarts()
155 	// do the correct init for cpu  in s3c_arch_init()
157 	if (cpu == NULL) {  in s3c_arch_init()
161 		panic("s3c_arch_init: NULL cpu\n");  in s3c_arch_init()
164 	ret = (cpu->init)();  in s3c_arch_init()