122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
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#ifndef _ARM_PROTO_H
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#define _ARM_PROTO_H
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#include <machine/vm.h>
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#define K_STACK_SIZE ARM_PAGE_SIZE
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#ifndef __ASSEMBLY__
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#include "cpufunc.h"
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/* klib */
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__dead void reset(void);
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phys_bytes vir2phys(void *);
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vir_bytes phys_memset(phys_bytes ph, u32_t c, phys_bytes bytes);
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void __switch_address_space(struct proc *p, struct proc **__ptproc);
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#define switch_address_space(proc) \
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__switch_address_space(proc, get_cpulocal_var_ptr(ptproc))
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void __copy_msg_from_user_end(void);
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void __copy_msg_to_user_end(void);
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void __user_copy_msg_pointer_failure(void);
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/* multiboot.c */
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void multiboot_init(void);
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/* protect.c */
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struct tss_s {
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reg_t sp0; /* stack pointer to use during interrupt */
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} __attribute__((packed));
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int tss_init(unsigned cpu, void * kernel_stack);
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void add_memmap(kinfo_t *cbi, u64_t addr, u64_t len);
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phys_bytes alloc_lowest(kinfo_t *cbi, phys_bytes len);
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void vm_enable_paging(void);
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void cut_memmap(kinfo_t *cbi, phys_bytes start, phys_bytes end);
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phys_bytes pg_roundup(phys_bytes b);
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void pg_info(reg_t *, u32_t **);
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void pg_clear(void);
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void pg_identity(kinfo_t *);
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phys_bytes pg_load(void);
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void pg_map(phys_bytes phys, vir_bytes vaddr, vir_bytes vaddr_end, kinfo_t *cbi);
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int pg_mapkernel(void);
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void pg_mapproc(struct proc *p, struct boot_image *ip, kinfo_t *cbi);
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EXTERN void * k_stacks_start;
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extern void * k_stacks;
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#define get_k_stack_top(cpu) ((void *)(((char*)(k_stacks)) \
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+ 2 * ((cpu) + 1) * K_STACK_SIZE))
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/*
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* Definition of a callback used when a memory map changes it's base address
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*/
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typedef int (*kern_phys_map_mapped)(vir_bytes id, vir_bytes new_addr );
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/*
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* struct used internally by memory.c to keep a list of
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* items to map. These should be statically allocated
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* in the individual files and passed as argument.
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* The data doesn't need to be initialized. See omap_serial for
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* and example usage.
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*/
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typedef struct kern_phys_map{
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phys_bytes addr; /* The physical address to map */
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vir_bytes size; /* The size of the mapping */
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vir_bytes id; /* an id passed to the callback */
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kern_phys_map_mapped cb; /* the callback itself */
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phys_bytes vir; /* The virtual address once remapped */
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int index; /* index */
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struct kern_phys_map *next; /* pointer to the next */
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} kern_phys_map ;
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/*
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* Request an in kernel physical mapping.
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*
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* On ARM many devices are memory mapped and some of these devices
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* are used in the kernel. These device can be things like serial
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* lines, interrupt controller and clocks. The kernel needs to be
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* able to access these devices at the various stages of booting.
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* During startup, until arch_enable_paging is called, it is the
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* kernel whom is controlling the mappings and it often needs to
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* access the memory using a 1:1 mapping between virtual and
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* physical memory.
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*
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* Once processes start to run it is no longer desirable for the
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* kernel to have devices mapped in the middle of the process
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* address space.
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*
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* This method requests the memory manager to map base_address/size
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* in the kernel address space and call back the kernel when this
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* mapping takes effect (after enable_paging).
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*
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* Before the callback is called it is up to the kernel to use it's
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* own addressing. The callback will happen *after* the kernel lost
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* it's initial mapping. It it therefore not safe to use the initial
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* mapping in the callback. It also is not possible to use printf for
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* the same reason.
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*/
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int kern_req_phys_map( phys_bytes base_address, vir_bytes io_size,
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kern_phys_map * priv, kern_phys_map_mapped cb,
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vir_bytes id);
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/*
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* Request a physical mapping and put the result in the given prt
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* Note that ptr will only be valid once the callback happened.
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*/
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int kern_phys_map_ptr( phys_bytes base_address, vir_bytes io_size,
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kern_phys_map * priv, vir_bytes ptr);
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/* functions defined in architecture-independent kernel source. */
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#include "kernel/proto.h"
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#endif /* __ASSEMBLY__ */
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#endif
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