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| /* |
| * Copyright (c) 2005 Martin Decky |
| * Copyright (c) 2006 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "main.h" |
| #include <printf.h> |
| #include "asm.h" |
| #include "_components.h" |
| #include <balloc.h> |
| #include <ofw.h> |
| #include <ofw_tree.h> |
| #include "ofwarch.h" |
| #include <align.h> |
| #include <macros.h> |
| #include <string.h> |
| |
| bootinfo_t bootinfo; |
| |
| component_t components[COMPONENTS]; |
| |
| char *release = STRING(RELEASE); |
| |
| #ifdef REVISION |
| char *revision = ", revision " STRING(REVISION); |
| #else |
| char *revision = ""; |
| #endif |
| |
| #ifdef TIMESTAMP |
| char *timestamp = "\nBuilt on " STRING(TIMESTAMP); |
| #else |
| char *timestamp = ""; |
| #endif |
| |
| /** UltraSPARC subarchitecture - 1 for US, 3 for US3 */ |
| uint8_t subarchitecture; |
| |
| /** |
| * mask of the MID field inside the ICBUS_CONFIG register shifted by |
| * MID_SHIFT bits to the right |
| */ |
| uint16_t mid_mask; |
| |
| /** Print version information. */ |
| static void version_print(void) |
| { |
| printf("HelenOS SPARC64 Bootloader\nRelease %s%s%s\n" |
| "Copyright (c) 2006 HelenOS project\n", |
| release, revision, timestamp); |
| } |
| |
| /* the lowest ID (read from the VER register) of some US3 CPU model */ |
| #define FIRST_US3_CPU 0x14 |
| |
| /* the greatest ID (read from the VER register) of some US3 CPU model */ |
| #define LAST_US3_CPU 0x19 |
| |
| /* UltraSPARC IIIi processor implementation code */ |
| #define US_IIIi_CODE 0x15 |
| |
| /** |
| * Sets the global variables "subarchitecture" and "mid_mask" to |
| * correct values. |
| */ |
| static void detect_subarchitecture(void) |
| { |
| uint64_t v; |
| asm volatile ("rdpr %%ver, %0\n" : "=r" (v)); |
| |
| v = (v << 16) >> 48; |
| if ((v >= FIRST_US3_CPU) && (v <= LAST_US3_CPU)) { |
| subarchitecture = SUBARCH_US3; |
| if (v == US_IIIi_CODE) |
| mid_mask = (1 << 5) - 1; |
| else |
| mid_mask = (1 << 10) - 1; |
| } else if (v < FIRST_US3_CPU) { |
| subarchitecture = SUBARCH_US; |
| mid_mask = (1 << 5) - 1; |
| } else { |
| printf("\nThis CPU is not supported by HelenOS."); |
| } |
| } |
| |
| void bootstrap(void) |
| { |
| void *base = (void *) KERNEL_VIRTUAL_ADDRESS; |
| void *balloc_base; |
| unsigned int top = 0; |
| int i, j; |
| |
| version_print(); |
| |
| detect_subarchitecture(); |
| init_components(components); |
| |
| if (!ofw_get_physmem_start(&bootinfo.physmem_start)) { |
| printf("Error: unable to get start of physical memory.\n"); |
| halt(); |
| } |
| |
| if (!ofw_memmap(&bootinfo.memmap)) { |
| printf("Error: unable to get memory map, halting.\n"); |
| halt(); |
| } |
| |
| if (bootinfo.memmap.total == 0) { |
| printf("Error: no memory detected, halting.\n"); |
| halt(); |
| } |
| |
| /* |
| * SILO for some reason adds 0x400000 and subtracts |
| * bootinfo.physmem_start to/from silo_ramdisk_image. |
| * We just need plain physical address so we fix it up. |
| */ |
| if (silo_ramdisk_image) { |
| silo_ramdisk_image += bootinfo.physmem_start; |
| silo_ramdisk_image -= 0x400000; |
| /* Install 1:1 mapping for the ramdisk. */ |
| if (ofw_map((void *)((uintptr_t) silo_ramdisk_image), |
| (void *)((uintptr_t) silo_ramdisk_image), |
| silo_ramdisk_size, -1) != 0) { |
| printf("Failed to map ramdisk.\n"); |
| halt(); |
| } |
| } |
| |
| printf("\nSystem info\n"); |
| printf(" memory: %dM starting at %P\n", |
| bootinfo.memmap.total >> 20, bootinfo.physmem_start); |
| |
| printf("\nMemory statistics\n"); |
| printf(" kernel entry point at %P\n", KERNEL_VIRTUAL_ADDRESS); |
| printf(" %P: boot info structure\n", &bootinfo); |
| |
| /* |
| * Figure out destination address for each component. |
| * In this phase, we don't copy the components yet because we want to |
| * to be careful not to overwrite anything, especially the components |
| * which haven't been copied yet. |
| */ |
| bootinfo.taskmap.count = 0; |
| for (i = 0; i < COMPONENTS; i++) { |
| printf(" %P: %s image (size %d bytes)\n", components[i].start, |
| components[i].name, components[i].size); |
| top = ALIGN_UP(top, PAGE_SIZE); |
| if (i > 0) { |
| if (bootinfo.taskmap.count == TASKMAP_MAX_RECORDS) { |
| printf("Skipping superfluous components.\n"); |
| break; |
| } |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = |
| base + top; |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = |
| components[i].size; |
| strncpy(bootinfo.taskmap.tasks[ |
| bootinfo.taskmap.count].name, components[i].name, |
| BOOTINFO_TASK_NAME_BUFLEN); |
| bootinfo.taskmap.count++; |
| } |
| top += components[i].size; |
| } |
| |
| j = bootinfo.taskmap.count - 1; /* do not consider ramdisk */ |
| |
| if (silo_ramdisk_image) { |
| /* Treat the ramdisk as the last bootinfo task. */ |
| if (bootinfo.taskmap.count == TASKMAP_MAX_RECORDS) { |
| printf("Skipping ramdisk.\n"); |
| goto skip_ramdisk; |
| } |
| top = ALIGN_UP(top, PAGE_SIZE); |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = |
| base + top; |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = |
| silo_ramdisk_size; |
| bootinfo.taskmap.count++; |
| printf("\nCopying ramdisk..."); |
| /* |
| * Claim and map the whole ramdisk as it may exceed the area |
| * given to us by SILO. |
| */ |
| (void) ofw_claim_phys(base + top, silo_ramdisk_size); |
| (void) ofw_map(bootinfo.physmem_start + base + top, base + top, |
| silo_ramdisk_size, -1); |
| memmove(base + top, (void *)((uintptr_t)silo_ramdisk_image), |
| silo_ramdisk_size); |
| printf("done.\n"); |
| top += silo_ramdisk_size; |
| } |
| skip_ramdisk: |
| |
| /* |
| * Now we can proceed to copy the components. We do it in reverse order |
| * so that we don't overwrite anything even if the components overlap |
| * with base. |
| */ |
| printf("\nCopying bootinfo tasks\n"); |
| for (i = COMPONENTS - 1; i > 0; i--, j--) { |
| printf(" %s...", components[i].name); |
| |
| /* |
| * At this point, we claim the physical memory that we are |
| * going to use. We should be safe in case of the virtual |
| * address space because the OpenFirmware, according to its |
| * SPARC binding, should restrict its use of virtual memory |
| * to addresses from [0xffd00000; 0xffefffff] and |
| * [0xfe000000; 0xfeffffff]. |
| * |
| * XXX We don't map this piece of memory. We simply rely on |
| * SILO to have it done for us already in this case. |
| */ |
| (void) ofw_claim_phys(bootinfo.physmem_start + |
| bootinfo.taskmap.tasks[j].addr, |
| ALIGN_UP(components[i].size, PAGE_SIZE)); |
| |
| memcpy((void *)bootinfo.taskmap.tasks[j].addr, |
| components[i].start, components[i].size); |
| printf("done.\n"); |
| } |
| |
| printf("\nCopying kernel..."); |
| (void) ofw_claim_phys(bootinfo.physmem_start + base, |
| ALIGN_UP(components[0].size, PAGE_SIZE)); |
| memcpy(base, components[0].start, components[0].size); |
| printf("done.\n"); |
| |
| /* |
| * Claim and map the physical memory for the boot allocator. |
| * Initialize the boot allocator. |
| */ |
| balloc_base = base + ALIGN_UP(top, PAGE_SIZE); |
| (void) ofw_claim_phys(bootinfo.physmem_start + balloc_base, |
| BALLOC_MAX_SIZE); |
| (void) ofw_map(bootinfo.physmem_start + balloc_base, balloc_base, |
| BALLOC_MAX_SIZE, -1); |
| balloc_init(&bootinfo.ballocs, (uintptr_t)balloc_base); |
| |
| printf("\nCanonizing OpenFirmware device tree..."); |
| bootinfo.ofw_root = ofw_tree_build(); |
| printf("done.\n"); |
| |
| #ifdef CONFIG_AP |
| printf("\nChecking for secondary processors..."); |
| if (!ofw_cpu()) |
| printf("Error: unable to get CPU properties\n"); |
| printf("done.\n"); |
| #endif |
| |
| ofw_setup_palette(); |
| |
| printf("\nBooting the kernel...\n"); |
| jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, |
| bootinfo.physmem_start | BSP_PROCESSOR, &bootinfo, |
| sizeof(bootinfo)); |
| } |