WebSVN – HelenOS – Diff – /trunk/boot/arch/ppc64/loader/main.c


/*
 * Copyright (C) 2005 Martin Decky
 * 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 <ofw.h>
#include <align.h>
 
#define HEAP_GAP 1024000
 
bootinfo_t bootinfo;
 
 
static void check_align(const void *addr, const char *desc)
{
    if ((unsigned long) addr % PAGE_SIZE != 0) {
        printf("Error: %s not on page boundary, halting.\n", desc);
        halt();
    }
}
 
 
static void fix_overlap(void *va, void **pa, const char *desc, unsigned long *top)
{
    if ((unsigned long) *pa + PAGE_SIZE < *top) {
        printf("Warning: %s overlaps kernel physical area\n", desc);
       
        void *new_va = (void *) (ALIGN_UP((unsigned long) KERNEL_END + HEAP_GAP, PAGE_SIZE) + *top);
        void *new_pa = (void *) (HEAP_GAP + *top);
        *top += PAGE_SIZE;
       
        if (ofw_map(new_pa, new_va, PAGE_SIZE, 0) != 0) {
            printf("Error: Unable to map page aligned memory at %L (physical %L), halting.\n", new_va, new_pa);
            halt();
        }
       
        if ((unsigned long) new_pa + PAGE_SIZE < KERNEL_SIZE) {
            printf("Error: %s cannot be relocated, halting.\n", desc);
            halt();
        }
       
        printf("Relocating %L -> %L (physical %L -> %L)\n", va, new_va, *pa, new_pa);
        *pa = new_pa;
        memcpy(new_va, va, PAGE_SIZE);
    }
}
 
 
void bootstrap(void)
{
    printf("\nHelenOS PPC Bootloader\n");
   
    init_components();
   
    unsigned int i;
   
    for (i = 0; i < COMPONENTS; i++)
        check_align(components[i].start, components[i].name);
   
    check_align(&real_mode, "bootstrap trampoline");
    check_align(&trans, "translation table");
   
    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();
    }
   
    if (!ofw_screen(&bootinfo.screen)) {
        printf("Error: unable to get screen properties, halting.\n");
        halt();
    }
   
    if (!ofw_keyboard(&bootinfo.keyboard)) {
        printf("Error: unable to get keyboard properties, halting.\n");
        halt();
    }
   
    printf("\nDevice statistics\n");
    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);
    printf(" keyboard at %L (size %d bytes)\n", bootinfo.keyboard.addr, bootinfo.keyboard.size);
   
    void *real_mode_pa = ofw_translate(&real_mode);
    void *trans_pa = ofw_translate(&trans);
    void *bootinfo_pa = ofw_translate(&bootinfo);
   
    printf("\nMemory statistics (total %d MB)\n", bootinfo.memmap.total >> 20);
    printf(" %L: boot info structure (physical %L)\n", &bootinfo, bootinfo_pa);
    printf(" %L: bootstrap trampoline (physical %L)\n", &real_mode, real_mode_pa);
    printf(" %L: translation table (physical %L)\n", &trans, trans_pa);
    for (i = 0; i < COMPONENTS; i++)
        printf(" %L: %s image (size %d bytes)\n", components[i].start, components[i].name, components[i].size);
   
    unsigned long top = 0;
    for (i = 0; i < COMPONENTS; i++)
        top += ALIGN_UP(components[i].size, PAGE_SIZE);
   
    unsigned long pages = ALIGN_UP(KERNEL_SIZE, PAGE_SIZE) >> PAGE_WIDTH;
   
    for (i = 0; i < pages; i++) {
        void *pa = ofw_translate(KERNEL_START + (i << PAGE_WIDTH));
        fix_overlap(KERNEL_START + (i << PAGE_WIDTH), &pa, "kernel", &top);
        trans[i] = pa;
    }
   
    bootinfo.taskmap.count = 0;
    for (i = 1; i < COMPONENTS; i++) {
        unsigned long component_pages = ALIGN_UP(components[i].size, PAGE_SIZE) >> PAGE_WIDTH;
        unsigned long j;
       
        for (j = 0; j < component_pages; j++) {
            void *pa = ofw_translate(components[i].start + (j << PAGE_WIDTH));
            fix_overlap(components[i].start + (j << PAGE_WIDTH), &pa, components[i].name, &top);
            trans[pages + j] = pa;
            if (j == 0) {
                bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = (void *) (pages << PAGE_WIDTH);
                bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = components[i].size;
                bootinfo.taskmap.count++;
            }
        }
       
        pages += component_pages;
    }
   
    fix_overlap(&real_mode, &real_mode_pa, "bootstrap trampoline", &top);
    fix_overlap(&trans, &trans_pa, "translation table", &top);
    fix_overlap(&bootinfo, &bootinfo_pa, "boot info", &top);
   
    printf("\nBooting the kernel...\n");
    jump_to_kernel(bootinfo_pa, sizeof(bootinfo), trans_pa, pages << PAGE_WIDTH, real_mode_pa, (void *) bootinfo.screen.addr, bootinfo.screen.scanline);
}
 

Subversion Repositories HelenOS

(root)/trunk/boot/arch/ppc64/loader/main.c – Rev 1789 → 1800

Rev 1789		Rev 1800
1	/*	1	/*
2	* Copyright (C) 2005 Martin Decky	2	* Copyright (C) 2005 Martin Decky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include "main.h"	29	#include "main.h"
30	#include <printf.h>	30	#include <printf.h>
31	#include "asm.h"	31	#include "asm.h"
32	#include "_components.h"	32	#include "_components.h"
33	#include <ofw.h>	33	#include <ofw.h>
-		34	#include <align.h>
34		35
35	#define HEAP_GAP 1024000	36	#define HEAP_GAP 1024000
36		37
37	bootinfo_t bootinfo;	38	bootinfo_t bootinfo;
38		39
39		40
40	static void check_align(const void addr, const char desc)	41	static void check_align(const void addr, const char desc)
41	{	42	{
42	if ((unsigned long) addr % PAGE_SIZE != 0) {	43	if ((unsigned long) addr % PAGE_SIZE != 0) {
43	printf("Error: %s not on page boundary, halting.\n", desc);	44	printf("Error: %s not on page boundary, halting.\n", desc);
44	halt();	45	halt();
45	}	46	}
46	}	47	}
47		48
48		49
49	static void fix_overlap(void va, void pa, const char desc, unsigned long *top)	50	static void fix_overlap(void va, void pa, const char desc, unsigned long *top)
50	{	51	{
51	if ((unsigned long) pa + PAGE_SIZE < top) {	52	if ((unsigned long) pa + PAGE_SIZE < top) {
52	printf("Warning: %s overlaps kernel physical area\n", desc);	53	printf("Warning: %s overlaps kernel physical area\n", desc);
53		54
54	void new_va = (void ) (ALIGN_UP((unsigned long) KERNEL_END + HEAP_GAP, PAGE_SIZE) + *top);	55	void new_va = (void ) (ALIGN_UP((unsigned long) KERNEL_END + HEAP_GAP, PAGE_SIZE) + *top);
55	void new_pa = (void ) (HEAP_GAP + *top);	56	void new_pa = (void ) (HEAP_GAP + *top);
56	*top += PAGE_SIZE;	57	*top += PAGE_SIZE;
57		58
58	if (ofw_map(new_pa, new_va, PAGE_SIZE, 0) != 0) {	59	if (ofw_map(new_pa, new_va, PAGE_SIZE, 0) != 0) {
59	printf("Error: Unable to map page aligned memory at %L (physical %L), halting.\n", new_va, new_pa);	60	printf("Error: Unable to map page aligned memory at %L (physical %L), halting.\n", new_va, new_pa);
60	halt();	61	halt();
61	}	62	}
62		63
63	if ((unsigned long) new_pa + PAGE_SIZE < KERNEL_SIZE) {	64	if ((unsigned long) new_pa + PAGE_SIZE < KERNEL_SIZE) {
64	printf("Error: %s cannot be relocated, halting.\n", desc);	65	printf("Error: %s cannot be relocated, halting.\n", desc);
65	halt();	66	halt();
66	}	67	}
67		68
68	printf("Relocating %L -> %L (physical %L -> %L)\n", va, new_va, *pa, new_pa);	69	printf("Relocating %L -> %L (physical %L -> %L)\n", va, new_va, *pa, new_pa);
69	*pa = new_pa;	70	*pa = new_pa;
70	memcpy(new_va, va, PAGE_SIZE);	71	memcpy(new_va, va, PAGE_SIZE);
71	}	72	}
72	}	73	}
73		74
74		75
75	void bootstrap(void)	76	void bootstrap(void)
76	{	77	{
77	printf("\nHelenOS PPC Bootloader\n");	78	printf("\nHelenOS PPC Bootloader\n");
78		79
79	init_components();	80	init_components();
80		81
81	unsigned int i;	82	unsigned int i;
82		83
83	for (i = 0; i < COMPONENTS; i++)	84	for (i = 0; i < COMPONENTS; i++)
84	check_align(components[i].start, components[i].name);	85	check_align(components[i].start, components[i].name);
85		86
86	check_align(&real_mode, "bootstrap trampoline");	87	check_align(&real_mode, "bootstrap trampoline");
87	check_align(&trans, "translation table");	88	check_align(&trans, "translation table");
88		89
89	if (!ofw_memmap(&bootinfo.memmap)) {	90	if (!ofw_memmap(&bootinfo.memmap)) {
90	printf("Error: unable to get memory map, halting.\n");	91	printf("Error: unable to get memory map, halting.\n");
91	halt();	92	halt();
92	}	93	}
93		94
94	if (bootinfo.memmap.total == 0) {	95	if (bootinfo.memmap.total == 0) {
95	printf("Error: no memory detected, halting.\n");	96	printf("Error: no memory detected, halting.\n");
96	halt();	97	halt();
97	}	98	}
98		99
99	if (!ofw_screen(&bootinfo.screen)) {	100	if (!ofw_screen(&bootinfo.screen)) {
100	printf("Error: unable to get screen properties, halting.\n");	101	printf("Error: unable to get screen properties, halting.\n");
101	halt();	102	halt();
102	}	103	}
103		104
-		105	if (!ofw_keyboard(&bootinfo.keyboard)) {
-		106	printf("Error: unable to get keyboard properties, halting.\n");
-		107	halt();
-		108	}
-		109
104	printf("\nDevice statistics\n");	110	printf("\nDevice statistics\n");
105	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);	111	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);
-		112	printf(" keyboard at %L (size %d bytes)\n", bootinfo.keyboard.addr, bootinfo.keyboard.size);
106		113
107	void *real_mode_pa = ofw_translate(&real_mode);	114	void *real_mode_pa = ofw_translate(&real_mode);
108	void *trans_pa = ofw_translate(&trans);	115	void *trans_pa = ofw_translate(&trans);
109	void *bootinfo_pa = ofw_translate(&bootinfo);	116	void *bootinfo_pa = ofw_translate(&bootinfo);
110		117
111	printf("\nMemory statistics (total %d MB)\n", bootinfo.memmap.total >> 20);	118	printf("\nMemory statistics (total %d MB)\n", bootinfo.memmap.total >> 20);
112	printf(" %L: boot info structure (physical %L)\n", &bootinfo, bootinfo_pa);	119	printf(" %L: boot info structure (physical %L)\n", &bootinfo, bootinfo_pa);
113	printf(" %L: bootstrap trampoline (physical %L)\n", &real_mode, real_mode_pa);	120	printf(" %L: bootstrap trampoline (physical %L)\n", &real_mode, real_mode_pa);
114	printf(" %L: translation table (physical %L)\n", &trans, trans_pa);	121	printf(" %L: translation table (physical %L)\n", &trans, trans_pa);
115	for (i = 0; i < COMPONENTS; i++)	122	for (i = 0; i < COMPONENTS; i++)
116	printf(" %L: %s image (size %d bytes)\n", components[i].start, components[i].name, components[i].size);	123	printf(" %L: %s image (size %d bytes)\n", components[i].start, components[i].name, components[i].size);
117		124
118	unsigned long top = 0;	125	unsigned long top = 0;
119	for (i = 0; i < COMPONENTS; i++)	126	for (i = 0; i < COMPONENTS; i++)
120	top += ALIGN_UP(components[i].size, PAGE_SIZE);	127	top += ALIGN_UP(components[i].size, PAGE_SIZE);
121		128
122	unsigned long pages = ALIGN_UP(KERNEL_SIZE, PAGE_SIZE) >> PAGE_WIDTH;	129	unsigned long pages = ALIGN_UP(KERNEL_SIZE, PAGE_SIZE) >> PAGE_WIDTH;
123		130
124	for (i = 0; i < pages; i++) {	131	for (i = 0; i < pages; i++) {
125	void *pa = ofw_translate(KERNEL_START + (i << PAGE_WIDTH));	132	void *pa = ofw_translate(KERNEL_START + (i << PAGE_WIDTH));
126	fix_overlap(KERNEL_START + (i << PAGE_WIDTH), &pa, "kernel", &top);	133	fix_overlap(KERNEL_START + (i << PAGE_WIDTH), &pa, "kernel", &top);
127	trans[i] = pa;	134	trans[i] = pa;
128	}	135	}
129		136
130	bootinfo.taskmap.count = 0;	137	bootinfo.taskmap.count = 0;
131	for (i = 1; i < COMPONENTS; i++) {	138	for (i = 1; i < COMPONENTS; i++) {
132	unsigned long component_pages = ALIGN_UP(components[i].size, PAGE_SIZE) >> PAGE_WIDTH;	139	unsigned long component_pages = ALIGN_UP(components[i].size, PAGE_SIZE) >> PAGE_WIDTH;
133	unsigned long j;	140	unsigned long j;
134		141
135	for (j = 0; j < component_pages; j++) {	142	for (j = 0; j < component_pages; j++) {
136	void *pa = ofw_translate(components[i].start + (j << PAGE_WIDTH));	143	void *pa = ofw_translate(components[i].start + (j << PAGE_WIDTH));
137	fix_overlap(components[i].start + (j << PAGE_WIDTH), &pa, components[i].name, &top);	144	fix_overlap(components[i].start + (j << PAGE_WIDTH), &pa, components[i].name, &top);
138	trans[pages + j] = pa;	145	trans[pages + j] = pa;
139	if (j == 0) {	146	if (j == 0) {
140	bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = (void *) (pages << PAGE_WIDTH);	147	bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = (void *) (pages << PAGE_WIDTH);
141	bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = components[i].size;	148	bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = components[i].size;
142	bootinfo.taskmap.count++;	149	bootinfo.taskmap.count++;
143	}	150	}
144	}	151	}
145		152
146	pages += component_pages;	153	pages += component_pages;
147	}	154	}
148		155
149	fix_overlap(&real_mode, &real_mode_pa, "bootstrap trampoline", &top);	156	fix_overlap(&real_mode, &real_mode_pa, "bootstrap trampoline", &top);
150	fix_overlap(&trans, &trans_pa, "translation table", &top);	157	fix_overlap(&trans, &trans_pa, "translation table", &top);
151	fix_overlap(&bootinfo, &bootinfo_pa, "boot info", &top);	158	fix_overlap(&bootinfo, &bootinfo_pa, "boot info", &top);
152		159
153	printf("\nBooting the kernel...\n");	160	printf("\nBooting the kernel...\n");
154	jump_to_kernel(bootinfo_pa, sizeof(bootinfo), trans_pa, pages << PAGE_WIDTH, real_mode_pa);	161	jump_to_kernel(bootinfo_pa, sizeof(bootinfo), trans_pa, pages << PAGE_WIDTH, real_mode_pa, (void *) bootinfo.screen.addr, bootinfo.screen.scanline);
155	}	162	}
156		163