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e7b0e46065
This will help when syscalls have long arguments individual utcbs can be mapped to server tasks and kept mapped in until the tasks die, as opposed to map requests every time a server task maps a different utcb at the same virtual address. The changes have preparation code to also passing the utcb info through the stack as part of the environment. To sum up env and arg regions have also been added above the stack and env region is to be used to pass on the utcb address information at task startup.
72 lines
1.7 KiB
C
72 lines
1.7 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 <l4lib/arch/syslib.h>
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#include <task.h>
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#include <shm.h>
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#include <file.h>
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#include <init.h>
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#include <utcb.h>
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/* Initialise the utcb virtual address pool and its own utcb */
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void init_utcb(void)
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{
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void *utcb_virt, *utcb_page;
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/* Allocate and map one for self */
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utcb_virt = utcb_vaddr_new();
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printf("%s: Mapping 0x%x as utcb to self.\n", __TASKNAME__, utcb_virt);
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utcb_page = alloc_page(1);
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l4_map(utcb_page, utcb_virt, 1, MAP_USR_RW_FLAGS, self_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 devzero.\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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vmfile_init();
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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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