WebSVN – HelenOS – Diff – /trunk/kernel/arch/xen32/src/xen32.c


/*
 * Copyright (C) 2001-2004 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.
 */
 
/** @addtogroup xen32
 * @{
 */
/** @file
 */
 
#include <arch.h>
 
#include <arch/types.h>
#include <typedefs.h>
#include <align.h>
 
#include <arch/pm.h>
 
#include <arch/drivers/xconsole.h>
#include <arch/mm/page.h>
 
#include <arch/context.h>
 
#include <config.h>
 
#include <arch/interrupt.h>
#include <arch/asm.h>
#include <genarch/acpi/acpi.h>
 
#include <arch/bios/bios.h>
 
#include <arch/boot/boot.h>
#include <arch/mm/memory_init.h>
#include <interrupt.h>
#include <arch/debugger.h>
#include <proc/thread.h>
#include <syscall/syscall.h>
#include <console/console.h>
 
start_info_t start_info;
memzone_t meminfo;
 
extern void xen_callback(void);
extern void xen_failsafe_callback(void);
 
void arch_pre_main(void)
{
    xen_vm_assist(VMASST_CMD_ENABLE, VMASST_TYPE_WRITABLE_PAGETABLES);
   
    pte_t pte;
    memsetb((uintptr_t) &pte, sizeof(pte), 0);
   
    pte.present = 1;
    pte.writeable = 1;
    pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info);
    xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG);
   
    xen_set_callbacks(XEN_CS, xen_callback, XEN_CS, xen_failsafe_callback);
   
    /* Create identity mapping */
   
    meminfo.start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames;
    meminfo.size = start_info.frames - meminfo.start;
    meminfo.reserved = 0;
   
    uintptr_t pa;
    index_t last_ptl0 = 0;
    for (pa = PFN2ADDR(meminfo.start); pa < PFN2ADDR(meminfo.start + meminfo.size); pa += FRAME_SIZE) {
        uintptr_t va = PA2KA(pa);
       
        if ((PTL0_INDEX(va) != last_ptl0) && (GET_PTL1_FLAGS(start_info.ptl0, PTL0_INDEX(va)) & PAGE_NOT_PRESENT)) {
            /* New page directory entry needed */
            uintptr_t tpa = PFN2ADDR(meminfo.start + meminfo.reserved);
            uintptr_t tva = PA2KA(tpa);
           
            memsetb(tva, PAGE_SIZE, 0);
           
            pte_t *tptl3 = (pte_t *) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva)));
            SET_FRAME_FLAGS(tptl3, PTL3_INDEX(tva), PAGE_PRESENT);
            SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa);
           
            last_ptl0 = PTL0_INDEX(va);
            meminfo.reserved++;
        }
       
        pte_t *ptl3 = (pte_t *) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va)));
       
        SET_FRAME_ADDRESS(ptl3, PTL3_INDEX(va), pa);
        SET_FRAME_FLAGS(ptl3, PTL3_INDEX(va), PAGE_PRESENT | PAGE_WRITE);
    }
}
 
void arch_pre_mm_init(void)
{
    pm_init();
 
    if (config.cpu_active == 1) {
//      bios_init();
       
        exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall);
       
        #ifdef CONFIG_SMP
        exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown",
                 (iroutine) tlb_shootdown_ipi);
        #endif /* CONFIG_SMP */
    }
}
 
void arch_post_mm_init(void)
{
    if (config.cpu_active == 1) {
        /* video */
        xen_console_init();
        /* Enable debugger */
        debugger_init();
        /* Merge all memory zones to 1 big zone */
        zone_merge_all();
    }
}
 
void arch_pre_smp_init(void)
{
    if (config.cpu_active == 1) {
        memory_print_map();
       
        #ifdef CONFIG_SMP
        acpi_init();
        #endif /* CONFIG_SMP */
    }
}
 
void arch_post_smp_init(void)
{
}
 
void calibrate_delay_loop(void)
{
//  i8254_calibrate_delay_loop();
    if (config.cpu_active == 1) {
        /*
         * This has to be done only on UP.
         * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
         */
//      i8254_normal_operation();
    }
}
 
/** Set thread-local-storage pointer
 *
 * TLS pointer is set in GS register. That means, the GS contains
 * selector, and the descriptor->base is the correct address.
 */
unative_t sys_tls_set(unative_t addr)
{
    THREAD->arch.tls = addr;
    set_tls_desc(addr);
 
    return 0;
}
 
/** Acquire console back for kernel
 *
 */
void arch_grab_console(void)
{
}
 
/** Return console to userspace
 *
 */
void arch_release_console(void)
{
}
 
/** @}
 */
 

Rev 1824	Rev 1829
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
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	/** @addtogroup xen32	29	/** @addtogroup xen32
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch.h>	35	#include <arch.h>
36		36
37	#include <arch/types.h>	37	#include <arch/types.h>
38	#include <typedefs.h>	38	#include <typedefs.h>
39	#include <align.h>	39	#include <align.h>
40		40
41	#include <arch/pm.h>	41	#include <arch/pm.h>
42		42
43	#include <arch/drivers/xconsole.h>	43	#include <arch/drivers/xconsole.h>
44	#include <arch/mm/page.h>	44	#include <arch/mm/page.h>
45		45
46	#include <arch/context.h>	46	#include <arch/context.h>
47		47
48	#include <config.h>	48	#include <config.h>
49		49
50	#include <arch/interrupt.h>	50	#include <arch/interrupt.h>
51	#include <arch/asm.h>	51	#include <arch/asm.h>
52	#include <genarch/acpi/acpi.h>	52	#include <genarch/acpi/acpi.h>
53		53
54	#include <arch/bios/bios.h>	54	#include <arch/bios/bios.h>
55		55
56	#include <arch/boot/boot.h>	56	#include <arch/boot/boot.h>
57	#include <arch/mm/memory_init.h>	57	#include <arch/mm/memory_init.h>
58	#include <interrupt.h>	58	#include <interrupt.h>
59	#include <arch/debugger.h>	59	#include <arch/debugger.h>
60	#include <proc/thread.h>	60	#include <proc/thread.h>
61	#include <syscall/syscall.h>	61	#include <syscall/syscall.h>
62	#include <console/console.h>	62	#include <console/console.h>
63		63
64	start_info_t start_info;	64	start_info_t start_info;
65	memzone_t meminfo;	65	memzone_t meminfo;
66		66
-		67	extern void xen_callback(void);
-		68	extern void xen_failsafe_callback(void);
-		69
67	void arch_pre_main(void)	70	void arch_pre_main(void)
68	{	71	{
69	xen_vm_assist(VMASST_CMD_ENABLE, VMASST_TYPE_WRITABLE_PAGETABLES);	72	xen_vm_assist(VMASST_CMD_ENABLE, VMASST_TYPE_WRITABLE_PAGETABLES);
70		73
71	pte_t pte;	74	pte_t pte;
72	memsetb((uintptr_t) &pte, sizeof(pte), 0);	75	memsetb((uintptr_t) &pte, sizeof(pte), 0);
73		76
74	pte.present = 1;	77	pte.present = 1;
75	pte.writeable = 1;	78	pte.writeable = 1;
76	pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info);	79	pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info);
77	xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG);	80	xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG);
78		81
-		82	xen_set_callbacks(XEN_CS, xen_callback, XEN_CS, xen_failsafe_callback);
-		83
79	/* Create identity mapping */	84	/* Create identity mapping */
80		85
81	meminfo.start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames;	86	meminfo.start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames;
82	meminfo.size = start_info.frames - meminfo.start;	87	meminfo.size = start_info.frames - meminfo.start;
83	meminfo.reserved = 0;	88	meminfo.reserved = 0;
84		89
85	uintptr_t pa;	90	uintptr_t pa;
86	index_t last_ptl0 = 0;	91	index_t last_ptl0 = 0;
87	for (pa = PFN2ADDR(meminfo.start); pa < PFN2ADDR(meminfo.start + meminfo.size); pa += FRAME_SIZE) {	92	for (pa = PFN2ADDR(meminfo.start); pa < PFN2ADDR(meminfo.start + meminfo.size); pa += FRAME_SIZE) {
88	uintptr_t va = PA2KA(pa);	93	uintptr_t va = PA2KA(pa);
89		94
90	if ((PTL0_INDEX(va) != last_ptl0) && (GET_PTL1_FLAGS(start_info.ptl0, PTL0_INDEX(va)) & PAGE_NOT_PRESENT)) {	95	if ((PTL0_INDEX(va) != last_ptl0) && (GET_PTL1_FLAGS(start_info.ptl0, PTL0_INDEX(va)) & PAGE_NOT_PRESENT)) {
91	/* New page directory entry needed */	96	/* New page directory entry needed */
92	uintptr_t tpa = PFN2ADDR(meminfo.start + meminfo.reserved);	97	uintptr_t tpa = PFN2ADDR(meminfo.start + meminfo.reserved);
93	uintptr_t tva = PA2KA(tpa);	98	uintptr_t tva = PA2KA(tpa);
94		99
95	memsetb(tva, PAGE_SIZE, 0);	100	memsetb(tva, PAGE_SIZE, 0);
96		101
97	pte_t tptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva)));	102	pte_t tptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva)));
98	SET_FRAME_FLAGS(tptl3, PTL3_INDEX(tva), PAGE_PRESENT);	103	SET_FRAME_FLAGS(tptl3, PTL3_INDEX(tva), PAGE_PRESENT);
99	SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa);	104	SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa);
100		105
101	last_ptl0 = PTL0_INDEX(va);	106	last_ptl0 = PTL0_INDEX(va);
102	meminfo.reserved++;	107	meminfo.reserved++;
103	}	108	}
104		109
105	pte_t ptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va)));	110	pte_t ptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va)));
106		111
107	SET_FRAME_ADDRESS(ptl3, PTL3_INDEX(va), pa);	112	SET_FRAME_ADDRESS(ptl3, PTL3_INDEX(va), pa);
108	SET_FRAME_FLAGS(ptl3, PTL3_INDEX(va), PAGE_PRESENT \| PAGE_WRITE);	113	SET_FRAME_FLAGS(ptl3, PTL3_INDEX(va), PAGE_PRESENT \| PAGE_WRITE);
109	}	114	}
110	}	115	}
111		116
112	void arch_pre_mm_init(void)	117	void arch_pre_mm_init(void)
113	{	118	{
114	pm_init();	119	pm_init();
115		120
116	if (config.cpu_active == 1) {	121	if (config.cpu_active == 1) {
117	// bios_init();	122	// bios_init();
118		123
119	// exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall);	124	exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall);
120		125
121	#ifdef CONFIG_SMP	126	#ifdef CONFIG_SMP
122	// exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown",	127	exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown",
123	// (iroutine) tlb_shootdown_ipi);	128	(iroutine) tlb_shootdown_ipi);
124	#endif /* CONFIG_SMP */	129	#endif /* CONFIG_SMP */
125	}	130	}
126	}	131	}
127		132
128	void arch_post_mm_init(void)	133	void arch_post_mm_init(void)
129	{	134	{
130	if (config.cpu_active == 1) {	135	if (config.cpu_active == 1) {
131	/* video */	136	/* video */
132	xen_console_init();	137	xen_console_init();
133	/* Enable debugger */	138	/* Enable debugger */
134	debugger_init();	139	debugger_init();
135	/* Merge all memory zones to 1 big zone */	140	/* Merge all memory zones to 1 big zone */
136	zone_merge_all();	141	zone_merge_all();
137	}	142	}
138	}	143	}
139		144
140	void arch_pre_smp_init(void)	145	void arch_pre_smp_init(void)
141	{	146	{
142	if (config.cpu_active == 1) {	147	if (config.cpu_active == 1) {
143	memory_print_map();	148	memory_print_map();
144		149
145	#ifdef CONFIG_SMP	150	#ifdef CONFIG_SMP
146	acpi_init();	151	acpi_init();
147	#endif /* CONFIG_SMP */	152	#endif /* CONFIG_SMP */
148	}	153	}
149	}	154	}
150		155
151	void arch_post_smp_init(void)	156	void arch_post_smp_init(void)
152	{	157	{
153	}	158	}
154		159
155	void calibrate_delay_loop(void)	160	void calibrate_delay_loop(void)
156	{	161	{
157	// i8254_calibrate_delay_loop();	162	// i8254_calibrate_delay_loop();
158	if (config.cpu_active == 1) {	163	if (config.cpu_active == 1) {
159	/*	164	/*
160	* This has to be done only on UP.	165	* This has to be done only on UP.
161	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.	166	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
162	*/	167	*/
163	// i8254_normal_operation();	168	// i8254_normal_operation();
164	}	169	}
165	}	170	}
166		171
167	/** Set thread-local-storage pointer	172	/** Set thread-local-storage pointer
168	*	173	*
169	* TLS pointer is set in GS register. That means, the GS contains	174	* TLS pointer is set in GS register. That means, the GS contains
170	* selector, and the descriptor->base is the correct address.	175	* selector, and the descriptor->base is the correct address.
171	*/	176	*/
172	unative_t sys_tls_set(unative_t addr)	177	unative_t sys_tls_set(unative_t addr)
173	{	178	{
174	THREAD->arch.tls = addr;	179	THREAD->arch.tls = addr;
175	set_tls_desc(addr);	180	set_tls_desc(addr);
176		181
177	return 0;	182	return 0;
178	}	183	}
179		184
180	/** Acquire console back for kernel	185	/** Acquire console back for kernel
181	*	186	*
182	*/	187	*/
183	void arch_grab_console(void)	188	void arch_grab_console(void)
184	{	189	{
185	}	190	}
186		191
187	/** Return console to userspace	192	/** Return console to userspace
188	*	193	*
189	*/	194	*/
190	void arch_release_console(void)	195	void arch_release_console(void)
191	{	196	{
192	}	197	}
193		198
194	/** @}	199	/** @}
195	*/	200	*/
196		201

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/xen32/src/xen32.c – Rev 1824 → 1829