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);
   
    pte.present = 1;
    pte.writeable = 1;
    pte.frame_address = start_info.console_mfn;
    xen_update_va_mapping(&console_page, 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 1829	Rev 1832
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);	67	extern void xen_callback(void);
68	extern void xen_failsafe_callback(void);	68	extern void xen_failsafe_callback(void);
69		69
70	void arch_pre_main(void)	70	void arch_pre_main(void)
71	{	71	{
72	xen_vm_assist(VMASST_CMD_ENABLE, VMASST_TYPE_WRITABLE_PAGETABLES);	72	xen_vm_assist(VMASST_CMD_ENABLE, VMASST_TYPE_WRITABLE_PAGETABLES);
73		73
74	pte_t pte;	74	pte_t pte;
75	memsetb((uintptr_t) &pte, sizeof(pte), 0);	75	memsetb((uintptr_t) &pte, sizeof(pte), 0);
76		76
77	pte.present = 1;	77	pte.present = 1;
78	pte.writeable = 1;	78	pte.writeable = 1;
79	pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info);	79	pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info);
80	xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG);	80	xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG);
81		81
-		82	pte.present = 1;
-		83	pte.writeable = 1;
-		84	pte.frame_address = start_info.console_mfn;
-		85	xen_update_va_mapping(&console_page, pte, UVMF_INVLPG);
-		86
82	xen_set_callbacks(XEN_CS, xen_callback, XEN_CS, xen_failsafe_callback);	87	xen_set_callbacks(XEN_CS, xen_callback, XEN_CS, xen_failsafe_callback);
83		88
84	/* Create identity mapping */	89	/* Create identity mapping */
85		90
86	meminfo.start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames;	91	meminfo.start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames;
87	meminfo.size = start_info.frames - meminfo.start;	92	meminfo.size = start_info.frames - meminfo.start;
88	meminfo.reserved = 0;	93	meminfo.reserved = 0;
89		94
90	uintptr_t pa;	95	uintptr_t pa;
91	index_t last_ptl0 = 0;	96	index_t last_ptl0 = 0;
92	for (pa = PFN2ADDR(meminfo.start); pa < PFN2ADDR(meminfo.start + meminfo.size); pa += FRAME_SIZE) {	97	for (pa = PFN2ADDR(meminfo.start); pa < PFN2ADDR(meminfo.start + meminfo.size); pa += FRAME_SIZE) {
93	uintptr_t va = PA2KA(pa);	98	uintptr_t va = PA2KA(pa);
94		99
95	if ((PTL0_INDEX(va) != last_ptl0) && (GET_PTL1_FLAGS(start_info.ptl0, PTL0_INDEX(va)) & PAGE_NOT_PRESENT)) {	100	if ((PTL0_INDEX(va) != last_ptl0) && (GET_PTL1_FLAGS(start_info.ptl0, PTL0_INDEX(va)) & PAGE_NOT_PRESENT)) {
96	/* New page directory entry needed */	101	/* New page directory entry needed */
97	uintptr_t tpa = PFN2ADDR(meminfo.start + meminfo.reserved);	102	uintptr_t tpa = PFN2ADDR(meminfo.start + meminfo.reserved);
98	uintptr_t tva = PA2KA(tpa);	103	uintptr_t tva = PA2KA(tpa);
99		104
100	memsetb(tva, PAGE_SIZE, 0);	105	memsetb(tva, PAGE_SIZE, 0);
101		106
102	pte_t tptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva)));	107	pte_t tptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva)));
103	SET_FRAME_FLAGS(tptl3, PTL3_INDEX(tva), PAGE_PRESENT);	108	SET_FRAME_FLAGS(tptl3, PTL3_INDEX(tva), PAGE_PRESENT);
104	SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa);	109	SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa);
105		110
106	last_ptl0 = PTL0_INDEX(va);	111	last_ptl0 = PTL0_INDEX(va);
107	meminfo.reserved++;	112	meminfo.reserved++;
108	}	113	}
109		114
110	pte_t ptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va)));	115	pte_t ptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va)));
111		116
112	SET_FRAME_ADDRESS(ptl3, PTL3_INDEX(va), pa);	117	SET_FRAME_ADDRESS(ptl3, PTL3_INDEX(va), pa);
113	SET_FRAME_FLAGS(ptl3, PTL3_INDEX(va), PAGE_PRESENT \| PAGE_WRITE);	118	SET_FRAME_FLAGS(ptl3, PTL3_INDEX(va), PAGE_PRESENT \| PAGE_WRITE);
114	}	119	}
115	}	120	}
116		121
117	void arch_pre_mm_init(void)	122	void arch_pre_mm_init(void)
118	{	123	{
119	pm_init();	124	pm_init();
120		125
121	if (config.cpu_active == 1) {	126	if (config.cpu_active == 1) {
122	// bios_init();	127	// bios_init();
123		128
124	exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall);	129	exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall);
125		130
126	#ifdef CONFIG_SMP	131	#ifdef CONFIG_SMP
127	exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown",	132	exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown",
128	(iroutine) tlb_shootdown_ipi);	133	(iroutine) tlb_shootdown_ipi);
129	#endif /* CONFIG_SMP */	134	#endif /* CONFIG_SMP */
130	}	135	}
131	}	136	}
132		137
133	void arch_post_mm_init(void)	138	void arch_post_mm_init(void)
134	{	139	{
135	if (config.cpu_active == 1) {	140	if (config.cpu_active == 1) {
136	/* video */	141	/* video */
137	xen_console_init();	142	xen_console_init();
138	/* Enable debugger */	143	/* Enable debugger */
139	debugger_init();	144	debugger_init();
140	/* Merge all memory zones to 1 big zone */	145	/* Merge all memory zones to 1 big zone */
141	zone_merge_all();	146	zone_merge_all();
142	}	147	}
143	}	148	}
144		149
145	void arch_pre_smp_init(void)	150	void arch_pre_smp_init(void)
146	{	151	{
147	if (config.cpu_active == 1) {	152	if (config.cpu_active == 1) {
148	memory_print_map();	153	memory_print_map();
149		154
150	#ifdef CONFIG_SMP	155	#ifdef CONFIG_SMP
151	acpi_init();	156	acpi_init();
152	#endif /* CONFIG_SMP */	157	#endif /* CONFIG_SMP */
153	}	158	}
154	}	159	}
155		160
156	void arch_post_smp_init(void)	161	void arch_post_smp_init(void)
157	{	162	{
158	}	163	}
159		164
160	void calibrate_delay_loop(void)	165	void calibrate_delay_loop(void)
161	{	166	{
162	// i8254_calibrate_delay_loop();	167	// i8254_calibrate_delay_loop();
163	if (config.cpu_active == 1) {	168	if (config.cpu_active == 1) {
164	/*	169	/*
165	* This has to be done only on UP.	170	* This has to be done only on UP.
166	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.	171	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
167	*/	172	*/
168	// i8254_normal_operation();	173	// i8254_normal_operation();
169	}	174	}
170	}	175	}
171		176
172	/** Set thread-local-storage pointer	177	/** Set thread-local-storage pointer
173	*	178	*
174	* TLS pointer is set in GS register. That means, the GS contains	179	* TLS pointer is set in GS register. That means, the GS contains
175	* selector, and the descriptor->base is the correct address.	180	* selector, and the descriptor->base is the correct address.
176	*/	181	*/
177	unative_t sys_tls_set(unative_t addr)	182	unative_t sys_tls_set(unative_t addr)
178	{	183	{
179	THREAD->arch.tls = addr;	184	THREAD->arch.tls = addr;
180	set_tls_desc(addr);	185	set_tls_desc(addr);
181		186
182	return 0;	187	return 0;
183	}	188	}
184		189
185	/** Acquire console back for kernel	190	/** Acquire console back for kernel
186	*	191	*
187	*/	192	*/
188	void arch_grab_console(void)	193	void arch_grab_console(void)
189	{	194	{
190	}	195	}
191		196
192	/** Return console to userspace	197	/** Return console to userspace
193	*	198	*
194	*/	199	*/
195	void arch_release_console(void)	200	void arch_release_console(void)
196	{	201	{
197	}	202	}
198		203
199	/** @}	204	/** @}
200	*/	205	*/
201		206

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/xen32/src/xen32.c – Rev 1829 → 1832