227cc19890
New features: - support of kernel tasks in 64bit mode - support of LwIP in 64bit mode Missing features in 64bit mode - user-level support - APIC support => SMP support To create a 64bit version of the MetalSVM kernel, the compiler flags “-m64 -mno-red-zone” and the assembler flags “-felf64” has to be used. Please use qemu-system-x86_64 as test platform. Notice, metalsvm.elf is a 32bit ELF file. However, it contains (beside the startup code) only 64bit code. This is required because GRUB doesn’t boot 64bit ELF kernels. Therefore, for disassembling via objdump the flag “-M x86-64” has to be used.
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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* Copyright 2010 Stefan Lankes, Chair for Operating Systems,
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* RWTH Aachen University
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of MetalSVM.
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*/
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#include <metalsvm/stddef.h>
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#include <metalsvm/stdio.h>
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#include <metalsvm/string.h>
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#include <metalsvm/time.h>
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#include <metalsvm/mmu.h>
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#include <metalsvm/tasks.h>
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#include <metalsvm/processor.h>
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#include <metalsvm/errno.h>
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#include <metalsvm/init.h>
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#include <metalsvm/fs.h>
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#include <asm/irq.h>
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#include <asm/irqflags.h>
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#include <asm/kb.h>
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#ifdef CONFIG_ROCKCREEK
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#include <asm/icc.h>
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#include <asm/svm.h>
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#endif
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/*
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* Note that linker symbols are not variables, they have no memory allocated for
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* maintaining a value, rather their address is their value.
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*/
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extern const void kernel_start;
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extern const void kernel_end;
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extern char __BUILD_DATE;
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extern char __BUILD_TIME;
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#if MAX_CORES > 1
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// idle loop of the application processors
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int smp_main(void)
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{
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irq_enable();
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while(1) {
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HALT;
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}
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return 0;
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}
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#endif
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int main(void)
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{
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tid_t id;
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lowlevel_init();
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pushbg(COL_BLUE);
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kprintf("This is MetalSVM %s Build %u, %u\n",
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METALSVM_VERSION, &__BUILD_DATE, &__BUILD_TIME);
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popbg();
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system_init();
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irq_init();
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timer_init();
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#ifdef CONFIG_KEYBOARD
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keyboard_init();
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#endif
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multitasking_init();
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mmu_init();
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#ifdef CONFIG_ROCKCREEK
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icc_init();
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svm_init();
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#endif
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initrd_init();
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irq_enable();
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kprintf("Kernel starts at %p and ends at %p\n", &kernel_start, &kernel_end);
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system_calibration();
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kprintf("Processor frequency: %u MHz\n", get_cpu_frequency());
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kprintf("Total memory: %u MBytes\n", atomic_int32_read(&total_pages)/((1024*1024)/PAGE_SIZE));
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kprintf("Current allocated memory: %u KBytes\n", atomic_int32_read(&total_allocated_pages)*(PAGE_SIZE/1024));
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kprintf("Current available memory: %u MBytes\n", atomic_int32_read(&total_available_pages)/((1024*1024)/PAGE_SIZE));
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sleep(5);
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create_kernel_task(&id, initd, NULL, NORMAL_PRIO);
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kprintf("Create initd with id %u\n", id);
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reschedule();
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while(1) {
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check_workqueues();
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HALT;
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}
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return 0;
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}
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