mirror of
https://github.com/drasko/codezero.git
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938672f7c9
Changed l4id_t type to integer to recognise negative id values like L4_ANYTHREAD. Added an extremely simple script that cleans and builds everything in right order. Increased boot pmds by one: This is due to the fact that if the 1MB initial allocation area of the kernel is not 1MB-aligned, it is ought to be mapped from the middle of one MB to next, which requires 2 pmds. modified: .gdbinit modified: README new file: buildall.sh modified: include/l4/arch/arm/types.h modified: include/l4/generic/scheduler.h modified: loader/kernel.S modified: loader/main.c modified: loader/mylink.lds modified: loader/start.axf.S modified: src/glue/arm/init.c modified: src/glue/arm/memory.c modified: tasks/fs0/src/bdev.c modified: tasks/mm0/include/kdata.h modified: tasks/mm0/include/vm_area.h modified: tasks/mm0/src/init.c modified: tasks/mm0/src/task.c modified: tools/ksym_to_lds.py modified: tools/l4-qemu
94 lines
2.3 KiB
C
94 lines
2.3 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_zero_page();
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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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/* Create temporary run-time files in memory to test with mmap */
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void init_boot_files(struct initdata *initdata)
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{
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struct vm_file *f;
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struct svc_image *img;
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struct bootdesc *bd = initdata->bootdesc;
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INIT_LIST_HEAD(&initdata->boot_file_list);
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for (int i = BOOTDESC_IMAGE_START; i < bd->total_images; i++) {
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img = &bd->images[i];
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if (!(!strcmp(img->name, "fs0") || !strcmp(img->name, "test0")))
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continue; /* Img is not what we want */
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f = kzalloc(sizeof(*f));
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INIT_LIST_HEAD(&f->list);
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INIT_LIST_HEAD(&f->page_cache_list);
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list_add(&f->list, &initdata->boot_file_list);
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/*
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* For boot files, we use the physical address of the memory
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* file as its inode.
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*/
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f->inode.i_addr = img->phys_start;
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f->length = img->phys_end - img->phys_start;
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f->pager = &default_file_pager;
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}
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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_boot_files(&initdata);
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// printf("INITTASK: Initialised mock-up bootfiles.\n");
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init_pm(&initdata);
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// printf("INITTASK: Initialised the memory/process manager.\n");
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}
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