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Line 103... Line 103...
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 */
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 */
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uintptr_t hardcoded_load_address = 0;   /**< Virtual address of where the kernel is loaded. */
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uintptr_t hardcoded_load_address = 0;   /**< Virtual address of where the kernel is loaded. */
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size_t hardcoded_ktext_size = 0;    /**< Size of the kernel code in bytes. */
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size_t hardcoded_ktext_size = 0;    /**< Size of the kernel code in bytes. */
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size_t hardcoded_kdata_size = 0;    /**< Size of the kernel data in bytes. */
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size_t hardcoded_kdata_size = 0;    /**< Size of the kernel data in bytes. */
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- 
 
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uintptr_t stack_safe = 0;   /**< Lowest safe stack virtual address */
- 
 
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void main_bsp(void);
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void main_bsp(void);
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void main_ap(void);
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void main_ap(void);
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/*
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/*
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 * These two functions prevent stack from underflowing during the
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 * These two functions prevent stack from underflowing during the
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 * Assuming interrupts_disable().
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 * Assuming interrupts_disable().
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 *
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 *
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 */
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 */
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void main_bsp(void)
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void main_bsp(void)
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{
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{
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    uintptr_t stackaddr;
 - 
 
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 - 
 
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    config.cpu_count = 1;
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    config.cpu_count = 1;
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    config.cpu_active = 1;
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    config.cpu_active = 1;
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    config.base = hardcoded_load_address;
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    config.base = hardcoded_load_address;
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    config.memory_size = get_memory_size();
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    config.memory_size = get_memory_size();
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    config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
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    config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
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    config.stack_size = CONFIG_STACK_SIZE;
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    /* Initialy the stack is placed just after the kernel */
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    stackaddr = config.base + config.kernel_size;
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    config.stack_base = config.base + config.kernel_size;
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    /* Avoid placing kernel on top of init */
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    /* Avoid placing stack on top of init */
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    count_t i;
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    count_t i;
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    bool overlap = false;
 - 
 
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    for (i = 0; i < init.cnt; i++)
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    for (i = 0; i < init.cnt; i++) {
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        if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
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        if (PA_overlaps(config.stack_base, config.stack_size, init.tasks[i].addr, init.tasks[i].size))
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            stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
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            config.stack_base = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, config.stack_size);
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            init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
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            overlap = true;
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        }
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    }
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    if (!overlap)
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    if (config.stack_base < stack_safe)
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        config.kernel_size += CONFIG_STACK_SIZE;
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        config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);
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    context_save(&ctx);
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    context_save(&ctx);
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    context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);
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    context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base, THREAD_STACK_SIZE);
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    context_restore(&ctx);
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    context_restore(&ctx);
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    /* not reached */
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    /* not reached */
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}
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}
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    page_init();
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    page_init();
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    tlb_init();
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    tlb_init();
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    arch_post_mm_init();
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    arch_post_mm_init();
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    version_print();
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    version_print();
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    printf("%.*p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) * 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);
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    printf("kernel: %.*p hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) * 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);
- 
 
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    printf("stack:  %.*p size=%zdK\n", sizeof(uintptr_t) * 2, config.stack_base, config.stack_size >> 10);
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    arch_pre_smp_init();
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    arch_pre_smp_init();
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    smp_init();
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    smp_init();
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    slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
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    slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */