WebSVN – HelenOS-historic – Diff – /boot/trunk/arch/ppc32/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"
 
#define KERNEL_PHYSICAL_ADDRESS 0x0000
#define KERNEL_VIRTUAL_ADDRESS 0x80000000
#define KERNEL_BOOT_OFFSET 0x2000
#define KERNEL_START &_binary_____________kernel_kernel_bin_start
#define KERNEL_END &_binary_____________kernel_kernel_bin_end
#define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START)
 
memmap_t memmap;
 
void bootstrap(void)
{
    printf("\nHelenOS PPC Bootloader\n");
   
    void *phys = ofw_translate(&start);
    printf("loaded at %L (physical %L)\n", &start, phys);
   
    if (!ofw_memmap(&memmap)) {
        printf("Unable to get memory map\n");
        halt();
    }
    printf("total memory %d MB\n", memmap.total >> 20);
   
 
    if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_SIZE + KERNEL_BOOT_OFFSET, 0) != 0) {
        printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS);
        halt();
    }
    printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS, KERNEL_SIZE);
    // FIXME: relocate the kernel in real mode
    memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE);
   
    // FIXME: proper hardware detection & mapping
    ofw_map((void *) 0x84000000, (void *) 0xf0000000, 0x01000000, 0);
    ofw_map((void *) 0x80816000, (void *) 0xf2000000, 0x00018000, 0);
   
    void *tramp = ofw_translate(&real_mode);
    printf("bootstrap trampoline at %L (physical %L)\n", &real_mode, tramp);
    printf("Booting the kernel...\n");
   
    flush_instruction_cache();
    jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS + KERNEL_BOOT_OFFSET, ofw_translate(&memmap), tramp);
}
 

Subversion Repositories HelenOS-historic

(root)/boot/trunk/arch/ppc32/loader/main.c – Rev 986 → 1022

Rev 986		Rev 1022
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		32
33	#define KERNEL_PHYSICAL_ADDRESS 0x0000	33	#define KERNEL_PHYSICAL_ADDRESS 0x0000
34	#define KERNEL_VIRTUAL_ADDRESS 0x80000000	34	#define KERNEL_VIRTUAL_ADDRESS 0x80000000
35	#define KERNEL_BOOT_OFFSET 0x2000	35	#define KERNEL_BOOT_OFFSET 0x2000
36	#define KERNEL_START &_binary_____________kernel_kernel_bin_start	36	#define KERNEL_START &_binary_____________kernel_kernel_bin_start
37	#define KERNEL_END &_binary_____________kernel_kernel_bin_end	37	#define KERNEL_END &_binary_____________kernel_kernel_bin_end
38	#define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START)	38	#define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START)
39		39
40	memmap_t memmap;	40	memmap_t memmap;
41		41
42	void bootstrap(void)	42	void bootstrap(void)
43	{	43	{
44	printf("\nHelenOS PPC Bootloader\n");	44	printf("\nHelenOS PPC Bootloader\n");
45		45
46	void *phys = ofw_translate(&start);	46	void *phys = ofw_translate(&start);
47	printf("loaded at %L (physical %L)\n", &start, phys);	47	printf("loaded at %L (physical %L)\n", &start, phys);
48		48
49	if (!ofw_memmap(&memmap)) {	49	if (!ofw_memmap(&memmap)) {
50	printf("Unable to get memory map\n");	50	printf("Unable to get memory map\n");
51	halt();	51	halt();
52	}	52	}
53	printf("total memory %d MB\n", memmap.total >> 20);	53	printf("total memory %d MB\n", memmap.total >> 20);
54		54
55	// FIXME: map just the kernel	-
56	if (ofw_map((void ) KERNEL_PHYSICAL_ADDRESS, (void ) KERNEL_VIRTUAL_ADDRESS, memmap.total - 64 * 1024 * 1024, 0) != 0) {	55	if (ofw_map((void ) KERNEL_PHYSICAL_ADDRESS, (void ) KERNEL_VIRTUAL_ADDRESS, KERNEL_SIZE + KERNEL_BOOT_OFFSET, 0) != 0) {
57	printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS);	56	printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS);
58	halt();	57	halt();
59	}	58	}
60	printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS, KERNEL_SIZE);	59	printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS, KERNEL_SIZE);
61	// FIXME: relocate the kernel in real mode	60	// FIXME: relocate the kernel in real mode
62	memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE);	61	memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE);
63		62
64	// FIXME: proper hardware detection & mapping	63	// FIXME: proper hardware detection & mapping
65	ofw_map((void ) 0x84000000, (void ) 0xf0000000, 0x01000000, 0);	64	ofw_map((void ) 0x84000000, (void ) 0xf0000000, 0x01000000, 0);
66	ofw_map((void ) 0x80816000, (void ) 0xf2000000, 0x00018000, 0);	65	ofw_map((void ) 0x80816000, (void ) 0xf2000000, 0x00018000, 0);
67		66
-		67	void *tramp = ofw_translate(&real_mode);
-		68	printf("bootstrap trampoline at %L (physical %L)\n", &real_mode, tramp);
68	printf("Booting the kernel...\n");	69	printf("Booting the kernel...\n");
69		70
70	flush_instruction_cache();	71	flush_instruction_cache();
71	jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS + KERNEL_BOOT_OFFSET, ofw_translate(&memmap));	72	jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS + KERNEL_BOOT_OFFSET, ofw_translate(&memmap), tramp);
72	}	73	}
73		74