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https://github.com/drasko/codezero.git
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ba0e3ada21
Boot files and tasks are now initialised together. Theads can ask for particular space and thread ids, if they're unused. This enables us to get predefined ids for known tasks such as the VFS task. Fixes to README Other minor fixes.
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/*
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* Initialise the system.
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#include <stdio.h>
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#include <string.h>
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#include <kdata.h>
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#include <memory.h>
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#include <mm/alloc_page.h>
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#include <kmalloc/kmalloc.h>
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#include <l4lib/arch/syscalls.h>
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#include <task.h>
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#include <shm.h>
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void init_utcb(void)
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{
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struct task_ids ids;
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void *utcb_page = alloc_page(1); /* Allocate a utcb page */
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l4_getid(&ids);
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l4_map(utcb_page, __L4_ARM_Utcb(), 1, MAP_USR_RW_FLAGS, ids.tid);
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}
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void init_mm(struct initdata *initdata)
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{
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/* Initialise the page and bank descriptors */
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init_physmem(initdata, membank);
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printf("%s: Initialised physmem.\n", __TASKNAME__);
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/* Initialise the page allocator on first bank. */
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init_page_allocator(membank[0].free, membank[0].end);
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printf("%s: Initialised page allocator.\n", __TASKNAME__);
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/* Initialise the zero page */
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init_devzero();
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printf("%s: Initialised zero page.\n", __TASKNAME__);
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init_utcb();
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printf("%s: Initialised own utcb.\n", __TASKNAME__);
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/* Initialise the pager's memory allocator */
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kmalloc_init();
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printf("%s: Initialised kmalloc.\n", __TASKNAME__);
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shm_init();
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printf("%s: Initialised shm structures.\n", __TASKNAME__);
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/* Give the kernel some memory to use for its allocators */
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l4_kmem_grant(__pfn(alloc_page(__pfn(SZ_1MB))), __pfn(SZ_1MB));
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}
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void initialise(void)
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{
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request_initdata(&initdata);
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init_mm(&initdata);
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init_pm(&initdata);
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printf("%s: Initialised the memory/process manager.\n", __TASKNAME__);
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}
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