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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)); |
} |