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


/*
 * Copyright (C) 2006 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.
 */
 
/** @addtogroup xen32
 * @{
 */
/** @file
 */
 
#include <arch.h>
#include <main/main.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);
    }
   
    /* Put initial stack safely in the mapped area */
    stack_safe = PA2KA(PFN2ADDR(meminfo.start + meminfo.reserved));
}
 
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 1834	Rev 1840
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2006 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	/** @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	#include <main/main.h>	36	#include <main/main.h>
37		37
38	#include <arch/types.h>	38	#include <arch/types.h>
39	#include <typedefs.h>	39	#include <typedefs.h>
40	#include <align.h>	40	#include <align.h>
41		41
42	#include <arch/pm.h>	42	#include <arch/pm.h>
43		43
44	#include <arch/drivers/xconsole.h>	44	#include <arch/drivers/xconsole.h>
45	#include <arch/mm/page.h>	45	#include <arch/mm/page.h>
46		46
47	#include <arch/context.h>	47	#include <arch/context.h>
48		48
49	#include <config.h>	49	#include <config.h>
50		50
51	#include <arch/interrupt.h>	51	#include <arch/interrupt.h>
52	#include <arch/asm.h>	52	#include <arch/asm.h>
53	#include <genarch/acpi/acpi.h>	53	#include <genarch/acpi/acpi.h>
54		54
55	#include <arch/bios/bios.h>	55	#include <arch/bios/bios.h>
56		56
57	#include <arch/boot/boot.h>	57	#include <arch/boot/boot.h>
58	#include <arch/mm/memory_init.h>	58	#include <arch/mm/memory_init.h>
59	#include <interrupt.h>	59	#include <interrupt.h>
60	#include <arch/debugger.h>	60	#include <arch/debugger.h>
61	#include <proc/thread.h>	61	#include <proc/thread.h>
62	#include <syscall/syscall.h>	62	#include <syscall/syscall.h>
63	#include <console/console.h>	63	#include <console/console.h>
64		64
65	start_info_t start_info;	65	start_info_t start_info;
66	memzone_t meminfo;	66	memzone_t meminfo;
67		67
68	extern void xen_callback(void);	68	extern void xen_callback(void);
69	extern void xen_failsafe_callback(void);	69	extern void xen_failsafe_callback(void);
70		70
71	void arch_pre_main(void)	71	void arch_pre_main(void)
72	{	72	{
73	xen_vm_assist(VMASST_CMD_ENABLE, VMASST_TYPE_WRITABLE_PAGETABLES);	73	xen_vm_assist(VMASST_CMD_ENABLE, VMASST_TYPE_WRITABLE_PAGETABLES);
74		74
75	pte_t pte;	75	pte_t pte;
76	memsetb((uintptr_t) &pte, sizeof(pte), 0);	76	memsetb((uintptr_t) &pte, sizeof(pte), 0);
77		77
78	pte.present = 1;	78	pte.present = 1;
79	pte.writeable = 1;	79	pte.writeable = 1;
80	pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info);	80	pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info);
81	xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG);	81	xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG);
82		82
83	pte.present = 1;	83	pte.present = 1;
84	pte.writeable = 1;	84	pte.writeable = 1;
85	pte.frame_address = start_info.console_mfn;	85	pte.frame_address = start_info.console_mfn;
86	xen_update_va_mapping(&console_page, pte, UVMF_INVLPG);	86	xen_update_va_mapping(&console_page, pte, UVMF_INVLPG);
87		87
88	xen_set_callbacks(XEN_CS, xen_callback, XEN_CS, xen_failsafe_callback);	88	xen_set_callbacks(XEN_CS, xen_callback, XEN_CS, xen_failsafe_callback);
89		89
90	/* Create identity mapping */	90	/* Create identity mapping */
91		91
92	meminfo.start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames;	92	meminfo.start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames;
93	meminfo.size = start_info.frames - meminfo.start;	93	meminfo.size = start_info.frames - meminfo.start;
94	meminfo.reserved = 0;	94	meminfo.reserved = 0;
95		95
96	uintptr_t pa;	96	uintptr_t pa;
97	index_t last_ptl0 = 0;	97	index_t last_ptl0 = 0;
98	for (pa = PFN2ADDR(meminfo.start); pa < PFN2ADDR(meminfo.start + meminfo.size); pa += FRAME_SIZE) {	98	for (pa = PFN2ADDR(meminfo.start); pa < PFN2ADDR(meminfo.start + meminfo.size); pa += FRAME_SIZE) {
99	uintptr_t va = PA2KA(pa);	99	uintptr_t va = PA2KA(pa);
100		100
101	if ((PTL0_INDEX(va) != last_ptl0) && (GET_PTL1_FLAGS(start_info.ptl0, PTL0_INDEX(va)) & PAGE_NOT_PRESENT)) {	101	if ((PTL0_INDEX(va) != last_ptl0) && (GET_PTL1_FLAGS(start_info.ptl0, PTL0_INDEX(va)) & PAGE_NOT_PRESENT)) {
102	/* New page directory entry needed */	102	/* New page directory entry needed */
103	uintptr_t tpa = PFN2ADDR(meminfo.start + meminfo.reserved);	103	uintptr_t tpa = PFN2ADDR(meminfo.start + meminfo.reserved);
104	uintptr_t tva = PA2KA(tpa);	104	uintptr_t tva = PA2KA(tpa);
105		105
106	memsetb(tva, PAGE_SIZE, 0);	106	memsetb(tva, PAGE_SIZE, 0);
107		107
108	pte_t tptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva)));	108	pte_t tptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva)));
109	SET_FRAME_FLAGS(tptl3, PTL3_INDEX(tva), PAGE_PRESENT);	109	SET_FRAME_FLAGS(tptl3, PTL3_INDEX(tva), PAGE_PRESENT);
110	SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa);	110	SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa);
111		111
112	last_ptl0 = PTL0_INDEX(va);	112	last_ptl0 = PTL0_INDEX(va);
113	meminfo.reserved++;	113	meminfo.reserved++;
114	}	114	}
115		115
116	pte_t ptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va)));	116	pte_t ptl3 = (pte_t ) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va)));
117		117
118	SET_FRAME_ADDRESS(ptl3, PTL3_INDEX(va), pa);	118	SET_FRAME_ADDRESS(ptl3, PTL3_INDEX(va), pa);
119	SET_FRAME_FLAGS(ptl3, PTL3_INDEX(va), PAGE_PRESENT \| PAGE_WRITE);	119	SET_FRAME_FLAGS(ptl3, PTL3_INDEX(va), PAGE_PRESENT \| PAGE_WRITE);
120	}	120	}
121		121
122	/* Put initial stack safely in the mapped area */	122	/* Put initial stack safely in the mapped area */
123	stack_safe = PA2KA(PFN2ADDR(meminfo.start + meminfo.reserved));	123	stack_safe = PA2KA(PFN2ADDR(meminfo.start + meminfo.reserved));
124	}	124	}
125		125
126	void arch_pre_mm_init(void)	126	void arch_pre_mm_init(void)
127	{	127	{
128	pm_init();	128	pm_init();
129		129
130	if (config.cpu_active == 1) {	130	if (config.cpu_active == 1) {
131	// bios_init();	131	// bios_init();
132		132
133	exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall);	133	exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall);
134		134
135	#ifdef CONFIG_SMP	135	#ifdef CONFIG_SMP
136	exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown",	136	exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown",
137	(iroutine) tlb_shootdown_ipi);	137	(iroutine) tlb_shootdown_ipi);
138	#endif /* CONFIG_SMP */	138	#endif /* CONFIG_SMP */
139	}	139	}
140	}	140	}
141		141
142	void arch_post_mm_init(void)	142	void arch_post_mm_init(void)
143	{	143	{
144	if (config.cpu_active == 1) {	144	if (config.cpu_active == 1) {
145	/* video */	145	/* video */
146	xen_console_init();	146	xen_console_init();
147	/* Enable debugger */	147	/* Enable debugger */
148	debugger_init();	148	debugger_init();
149	/* Merge all memory zones to 1 big zone */	149	/* Merge all memory zones to 1 big zone */
150	zone_merge_all();	150	zone_merge_all();
151	}	151	}
152	}	152	}
153		153
154	void arch_pre_smp_init(void)	154	void arch_pre_smp_init(void)
155	{	155	{
156	if (config.cpu_active == 1) {	156	if (config.cpu_active == 1) {
157	memory_print_map();	157	memory_print_map();
158		158
159	#ifdef CONFIG_SMP	159	#ifdef CONFIG_SMP
160	acpi_init();	160	acpi_init();
161	#endif /* CONFIG_SMP */	161	#endif /* CONFIG_SMP */
162	}	162	}
163	}	163	}
164		164
165	void arch_post_smp_init(void)	165	void arch_post_smp_init(void)
166	{	166	{
167	}	167	}
168		168
169	void calibrate_delay_loop(void)	169	void calibrate_delay_loop(void)
170	{	170	{
171	// i8254_calibrate_delay_loop();	171	// i8254_calibrate_delay_loop();
172	if (config.cpu_active == 1) {	172	if (config.cpu_active == 1) {
173	/*	173	/*
174	* This has to be done only on UP.	174	* This has to be done only on UP.
175	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.	175	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
176	*/	176	*/
177	// i8254_normal_operation();	177	// i8254_normal_operation();
178	}	178	}
179	}	179	}
180		180
181	/** Set thread-local-storage pointer	181	/** Set thread-local-storage pointer
182	*	182	*
183	* TLS pointer is set in GS register. That means, the GS contains	183	* TLS pointer is set in GS register. That means, the GS contains
184	* selector, and the descriptor->base is the correct address.	184	* selector, and the descriptor->base is the correct address.
185	*/	185	*/
186	unative_t sys_tls_set(unative_t addr)	186	unative_t sys_tls_set(unative_t addr)
187	{	187	{
188	THREAD->arch.tls = addr;	188	THREAD->arch.tls = addr;
189	set_tls_desc(addr);	189	set_tls_desc(addr);
190		190
191	return 0;	191	return 0;
192	}	192	}
193		193
194	/** Acquire console back for kernel	194	/** Acquire console back for kernel
195	*	195	*
196	*/	196	*/
197	void arch_grab_console(void)	197	void arch_grab_console(void)
198	{	198	{
199	}	199	}
200		200
201	/** Return console to userspace	201	/** Return console to userspace
202	*	202	*
203	*/	203	*/
204	void arch_release_console(void)	204	void arch_release_console(void)
205	{	205	{
206	}	206	}
207		207
208	/** @}	208	/** @}
209	*/	209	*/
210		210

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/xen32/src/xen32.c @ 1912 – Rev 1834 → 1840