Booting
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| − | + | == ARM Architecture == | |
| + | |||
| + | === '''stext''' (''arch/arm/kernel/head.S'') === | ||
| + | |||
| + | '''stext''' is the entry point of Linux kernel for ARM architectures. | ||
| + | |||
| + | # Set CPSR to ensure the processor is in supervisor mode, and both IRQ and FIQ are disabled. | ||
| + | # Get processor ID from CP15 | ||
| + | # Get the pointer to procinfo structure for its processor ID by calling '''__lookup_processor_type''' (''arch/arm/kernel/head-common.S''). If '''__lookup_processor_type''' could not find the procinfo structure, then the system fails to boot. | ||
| + | # __create_page_tables | ||
| + | # __enable_mmu | ||
| + | |||
| + | === _mmap_switched (''arch/arm/kernel/head-common.S'') === | ||
Latest revision as of 15:09, 5 April 2012
[edit] ARM Architecture
[edit] stext (arch/arm/kernel/head.S)
stext is the entry point of Linux kernel for ARM architectures.
- Set CPSR to ensure the processor is in supervisor mode, and both IRQ and FIQ are disabled.
- Get processor ID from CP15
- Get the pointer to procinfo structure for its processor ID by calling __lookup_processor_type (arch/arm/kernel/head-common.S). If __lookup_processor_type could not find the procinfo structure, then the system fails to boot.
- __create_page_tables
- __enable_mmu
