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* Copyright (c) 2005 Martin Decky
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "_components.h"
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#define HEAP_GAP 1024000
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static void check_align(const void *addr, const char *desc)
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if ((unsigned int) addr % PAGE_SIZE != 0) {
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printf("Error: %s not on page boundary, halting.\n", desc);
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static void fix_overlap(void *va, void **pa, const char *desc, unsigned int *top)
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if ((unsigned int) *pa + PAGE_SIZE < *top) {
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printf("Warning: %s overlaps kernel physical area\n", desc);
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void *new_va = (void *) (ALIGN_UP((unsigned int) KERNEL_END + HEAP_GAP, PAGE_SIZE) + *top);
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void *new_pa = (void *) (HEAP_GAP + *top);
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if (ofw_map(new_pa, new_va, PAGE_SIZE, 0) != 0) {
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printf("Error: Unable to map page aligned memory at %L (physical %L), halting.\n", new_va, new_pa);
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if ((unsigned int) new_pa + PAGE_SIZE < KERNEL_SIZE) {
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printf("Error: %s cannot be relocated, halting.\n", desc);
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printf("Relocating %L -> %L (physical %L -> %L)\n", va, new_va, *pa, new_pa);
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memcpy(new_va, va, PAGE_SIZE);
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char *release = STRING(RELEASE);
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char *revision = ", revision " STRING(REVISION);
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char *timestamp = "\nBuilt on " STRING(TIMESTAMP);
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/** Print version information. */
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static void version_print(void)
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printf("HelenOS PPC32 Bootloader\nRelease %s%s%s\nCopyright (c) 2006 HelenOS project\n\n", release, revision, timestamp);
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component_t components[COMPONENTS];
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init_components(components);
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for (i = 0; i < COMPONENTS; i++)
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check_align(components[i].start, components[i].name);
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check_align(&real_mode, "bootstrap trampoline");
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check_align(&trans, "translation table");
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if (!ofw_memmap(&bootinfo.memmap)) {
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printf("Error: Unable to get memory map, halting.\n");
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if (bootinfo.memmap.total == 0) {
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printf("Error: No memory detected, halting.\n");
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if (!ofw_screen(&bootinfo.screen))
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printf("Warning: Unable to get screen properties.\n");
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if (!ofw_macio(&bootinfo.macio))
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printf("Warning: Unable to get macio properties.\n");
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printf("Device statistics\n");
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if (bootinfo.screen.addr)
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printf(" screen at %L, resolution %dx%d, %d bpp (scanline %d bytes)\n", bootinfo.screen.addr, bootinfo.screen.width, bootinfo.screen.height, bootinfo.screen.bpp, bootinfo.screen.scanline);
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if (bootinfo.macio.addr)
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printf(" macio at %L (size %d bytes)\n", bootinfo.macio.addr, bootinfo.macio.size);
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void *real_mode_pa = ofw_translate(&real_mode);
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void *trans_pa = ofw_translate(&trans);
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void *bootinfo_pa = ofw_translate(&bootinfo);
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printf("\nMemory statistics (total %d MB)\n", bootinfo.memmap.total >> 20);
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printf(" %L: boot info structure (physical %L)\n", &bootinfo, bootinfo_pa);
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printf(" %L: bootstrap trampoline (physical %L)\n", &real_mode, real_mode_pa);
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printf(" %L: translation table (physical %L)\n", &trans, trans_pa);
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for (i = 0; i < COMPONENTS; i++)
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printf(" %L: %s image (size %d bytes)\n", components[i].start, components[i].name, components[i].size);
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unsigned int top = 0;
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for (i = 0; i < COMPONENTS; i++)
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top += ALIGN_UP(components[i].size, PAGE_SIZE);
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unsigned int pages = ALIGN_UP(KERNEL_SIZE, PAGE_SIZE) >> PAGE_WIDTH;
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for (i = 0; i < pages; i++) {
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void *pa = ofw_translate(KERNEL_START + (i << PAGE_WIDTH));
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fix_overlap(KERNEL_START + (i << PAGE_WIDTH), &pa, "kernel", &top);
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bootinfo.taskmap.count = 0;
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for (i = 1; i < COMPONENTS; i++) {
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unsigned int component_pages = ALIGN_UP(components[i].size, PAGE_SIZE) >> PAGE_WIDTH;
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for (j = 0; j < component_pages; j++) {
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void *pa = ofw_translate(components[i].start + (j << PAGE_WIDTH));
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fix_overlap(components[i].start + (j << PAGE_WIDTH), &pa, components[i].name, &top);
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trans[pages + j] = pa;
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bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = (void *) (pages << PAGE_WIDTH);
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bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = components[i].size;
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strncpy(bootinfo.taskmap.tasks[bootinfo.taskmap.count].name,
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components[i].name, BOOTINFO_TASK_NAME_BUFLEN);
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bootinfo.taskmap.count++;
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pages += component_pages;
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fix_overlap(&real_mode, &real_mode_pa, "bootstrap trampoline", &top);
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fix_overlap(&trans, &trans_pa, "translation table", &top);
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fix_overlap(&bootinfo, &bootinfo_pa, "boot info", &top);
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printf("\nBooting the kernel...\n");
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jump_to_kernel(bootinfo_pa, sizeof(bootinfo), trans_pa, pages << PAGE_WIDTH, real_mode_pa, (void *) bootinfo.screen.addr, bootinfo.screen.scanline);