void __init s3c_init_cpu(unsigned long idcode,
struct cpu_table *cputab, unsigned int cputab_size)
{
cpu = s3c_lookup_cpu(idcode, cputab, cputab_size);
if (cpu == NULL) {
printk(KERN_ERR "Unknown CPU type 0x%08lx\n", idcode);
panic("Unknown S3C24XX CPU");
}
printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
if (cpu->map_io == NULL || cpu->init == NULL) {
printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);
panic("Unsupported Samsung CPU");
}
cpu->map_io();
}
// idcode : samsung_cpu_id, cputab : cpu_ids, cputab_size : ARRAY_SIZE(cpu_ids) = 6
void __init s3c_init_cpu(unsigned long idcode,
struct cpu_table *cputab, unsigned int cputab_size)
{
cpu = s3c_lookup_cpu(idcode, cputab, cputab_size);
// cpu_ids 배열에서 idcode와 동일한 위치를 찾아낸 뒤 그 주소(cpu_table 구조체)를 반환함.
if (cpu == NULL) {
printk(KERN_ERR "Unknown CPU type 0x%08lx\n", idcode);
panic("Unknown S3C24XX CPU");
}
printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
if (cpu->init == NULL) {
printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);
panic("Unsupported Samsung CPU");
}
if (cpu->map_io)
cpu->map_io();
// exynos5_map_io 호출
// exynos io의 실제 메모리 주소를 가상 메모리 주소에 매핑하고
// vmlist와 static_vmlist에 등록시킴
}
void __init s3c_init_cpu(unsigned long idcode,
struct cpu_table *cputab, unsigned int cputab_size)
{
cpu = s3c_lookup_cpu(idcode, cputab, cputab_size);
if (cpu == NULL) {
printk(KERN_ERR "Unknown CPU type 0x%08lx\n", idcode);
panic("Unknown S3C24XX CPU");
}
printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
if (cpu->init == NULL) {
printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);
panic("Unsupported Samsung CPU");
}
/*!!C
* arm/mach-exynos/common.c 의 map_desc ... 로 정의
* 목적 : cpu io memory map 의 주소들을 virtual address 맵핑
*/
if (cpu->map_io)
cpu->map_io();
}