WebSVN – HelenOS – Diff – /tags/0.4.1/kernel/arch/amd64/src/amd64.c


/*
 * Copyright (c) 2005 Ondrej Palkovsky
 * 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 amd64
 * @{
 */
/** @file
 */
 
#include <arch.h>
 
#include <arch/types.h>
 
#include <config.h>
 
#include <proc/thread.h>
#include <genarch/multiboot/multiboot.h>
#include <genarch/drivers/legacy/ia32/io.h>
#include <genarch/drivers/ega/ega.h>
#include <arch/drivers/vesa.h>
#include <genarch/drivers/i8042/i8042.h>
#include <genarch/kbrd/kbrd.h>
#include <arch/drivers/i8254.h>
#include <arch/drivers/i8259.h>
#include <arch/boot/boot.h>
 
#ifdef CONFIG_SMP
#include <arch/smp/apic.h>
#endif
 
#include <arch/bios/bios.h>
#include <arch/cpu.h>
#include <print.h>
#include <arch/cpuid.h>
#include <genarch/acpi/acpi.h>
#include <panic.h>
#include <interrupt.h>
#include <arch/syscall.h>
#include <arch/debugger.h>
#include <syscall/syscall.h>
#include <console/console.h>
#include <ddi/irq.h>
#include <ddi/device.h>
#include <sysinfo/sysinfo.h>
 
/** Disable I/O on non-privileged levels
 *
 * Clean IOPL(12,13) and NT(14) flags in EFLAGS register
 */
static void clean_IOPL_NT_flags(void)
{
    asm volatile (
        "pushfq\n"
        "pop %%rax\n"
        "and $~(0x7000), %%rax\n"
        "pushq %%rax\n"
        "popfq\n"
        ::: "%rax"
    );
}
 
/** Disable alignment check
 *
 * Clean AM(18) flag in CR0 register
 */
static void clean_AM_flag(void)
{
    asm volatile (
        "mov %%cr0, %%rax\n"
        "and $~(0x40000), %%rax\n"
        "mov %%rax, %%cr0\n"
        ::: "%rax"
    );
}
 
/** Perform amd64-specific initialization before main_bsp() is called.
 *
 * @param signature Should contain the multiboot signature.
 * @param mi        Pointer to the multiboot information structure.
 */
void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
{
    /* Parse multiboot information obtained from the bootloader. */
    multiboot_info_parse(signature, mi);
   
#ifdef CONFIG_SMP
    /* Copy AP bootstrap routines below 1 MB. */
    memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
        (size_t) &_hardcoded_unmapped_size);
#endif
}
 
void arch_pre_mm_init(void)
{
    /* Enable no-execute pages */
    set_efer_flag(AMD_NXE_FLAG);
    /* Enable FPU */
    cpu_setup_fpu();
 
    /* Initialize segmentation */
    pm_init();
   
    /* Disable I/O on nonprivileged levels
     * clear the NT (nested-thread) flag
     */
    clean_IOPL_NT_flags();
    /* Disable alignment check */
    clean_AM_flag();
 
    if (config.cpu_active == 1) {
        interrupt_init();
        bios_init();
       
        /* PIC */
        i8259_init();
    }
}
 
 
void arch_post_mm_init(void)
{
    if (config.cpu_active == 1) {
        /* Initialize IRQ routing */
        irq_init(IRQ_COUNT, IRQ_COUNT);
       
        /* hard clock */
        i8254_init();
               
#ifdef CONFIG_FB
        if (vesa_present())
            vesa_init();
        else
#endif
            ega_init(EGA_BASE, EGA_VIDEORAM);   /* video */
       
        /* Enable debugger */
        debugger_init();
        /* Merge all memory zones to 1 big zone */
        zone_merge_all();
    }
   
    /* Setup fast SYSCALL/SYSRET */
    syscall_setup_cpu();
}
 
void arch_post_cpu_init()
{
#ifdef CONFIG_SMP
    if (config.cpu_active > 1) {
        l_apic_init();
        l_apic_debug();
    }
#endif
}
 
void arch_pre_smp_init(void)
{
    if (config.cpu_active == 1) {
#ifdef CONFIG_SMP
        acpi_init();
#endif /* CONFIG_SMP */
    }
}
 
void arch_post_smp_init(void)
{
    devno_t devno = device_assign_devno();
 
        /*
     * Initialize the keyboard module and conect it to stdin. Then
     * initialize the i8042 controller and connect it to kbrdin. Enable
     * keyboard interrupts.
         */
    kbrd_init(stdin);
    (void) i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD, &kbrdin);
    trap_virtual_enable_irqs(1 << IRQ_KBD);
 
    /*
     * This is the necessary evil until the userspace driver is entirely
     * self-sufficient.
     */
    sysinfo_set_item_val("kbd", NULL, true);
    sysinfo_set_item_val("kbd.devno", NULL, devno);
    sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
    sysinfo_set_item_val("kbd.address.physical", NULL,
        (uintptr_t) I8042_BASE);
    sysinfo_set_item_val("kbd.address.kernel", NULL,
        (uintptr_t) I8042_BASE);
}
 
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 FS register. Unfortunately the 64-bit
 * part can be set only in CPL0 mode.
 *
 * The specs say, that on %fs:0 there is stored contents of %fs register,
 * we need not to go to CPL0 to read it.
 */
unative_t sys_tls_set(unative_t addr)
{
    THREAD->arch.tls = addr;
    write_msr(AMD_MSR_FS, addr);
    return 0;
}
 
/** Acquire console back for kernel
 *
 */
void arch_grab_console(void)
{
#ifdef CONFIG_FB
    vesa_redraw();
#else
    ega_redraw();
#endif
}
 
/** Return console to userspace
 *
 */
void arch_release_console(void)
{
}
 
/** Construct function pointer
 *
 * @param fptr   function pointer structure
 * @param addr   function address
 * @param caller calling function address
 *
 * @return address of the function pointer
 *
 */
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
{
    return addr;
}
 
/** @}
 */
 

Rev 4026	Rev 4042
1	/*	1	/*
2	* Copyright (c) 2005 Ondrej Palkovsky	2	* Copyright (c) 2005 Ondrej Palkovsky
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 amd64	29	/** @addtogroup amd64
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		38
39	#include <config.h>	39	#include <config.h>
40		40
41	#include <proc/thread.h>	41	#include <proc/thread.h>
42	#include <genarch/multiboot/multiboot.h>	42	#include <genarch/multiboot/multiboot.h>
43	#include <genarch/drivers/legacy/ia32/io.h>	43	#include <genarch/drivers/legacy/ia32/io.h>
44	#include <genarch/drivers/ega/ega.h>	44	#include <genarch/drivers/ega/ega.h>
45	#include <arch/drivers/vesa.h>	45	#include <arch/drivers/vesa.h>
-		46	#include <genarch/drivers/i8042/i8042.h>
46	#include <genarch/kbd/i8042.h>	47	#include <genarch/kbrd/kbrd.h>
47	#include <arch/drivers/i8254.h>	48	#include <arch/drivers/i8254.h>
48	#include <arch/drivers/i8259.h>	49	#include <arch/drivers/i8259.h>
49	#include <arch/boot/boot.h>	50	#include <arch/boot/boot.h>
50		51
51	#ifdef CONFIG_SMP	52	#ifdef CONFIG_SMP
52	#include <arch/smp/apic.h>	53	#include <arch/smp/apic.h>
53	#endif	54	#endif
54		55
55	#include <arch/bios/bios.h>	56	#include <arch/bios/bios.h>
56	#include <arch/cpu.h>	57	#include <arch/cpu.h>
57	#include <print.h>	58	#include <print.h>
58	#include <arch/cpuid.h>	59	#include <arch/cpuid.h>
59	#include <genarch/acpi/acpi.h>	60	#include <genarch/acpi/acpi.h>
60	#include <panic.h>	61	#include <panic.h>
61	#include <interrupt.h>	62	#include <interrupt.h>
62	#include <arch/syscall.h>	63	#include <arch/syscall.h>
63	#include <arch/debugger.h>	64	#include <arch/debugger.h>
64	#include <syscall/syscall.h>	65	#include <syscall/syscall.h>
65	#include <console/console.h>	66	#include <console/console.h>
66	#include <ddi/irq.h>	67	#include <ddi/irq.h>
67	#include <ddi/device.h>	68	#include <ddi/device.h>
68	#include <sysinfo/sysinfo.h>	69	#include <sysinfo/sysinfo.h>
69		70
70	/** Disable I/O on non-privileged levels	71	/** Disable I/O on non-privileged levels
71	*	72	*
72	* Clean IOPL(12,13) and NT(14) flags in EFLAGS register	73	* Clean IOPL(12,13) and NT(14) flags in EFLAGS register
73	*/	74	*/
74	static void clean_IOPL_NT_flags(void)	75	static void clean_IOPL_NT_flags(void)
75	{	76	{
76	asm volatile (	77	asm volatile (
77	"pushfq\n"	78	"pushfq\n"
78	"pop %%rax\n"	79	"pop %%rax\n"
79	"and $~(0x7000), %%rax\n"	80	"and $~(0x7000), %%rax\n"
80	"pushq %%rax\n"	81	"pushq %%rax\n"
81	"popfq\n"	82	"popfq\n"
82	::: "%rax"	83	::: "%rax"
83	);	84	);
84	}	85	}
85		86
86	/** Disable alignment check	87	/** Disable alignment check
87	*	88	*
88	* Clean AM(18) flag in CR0 register	89	* Clean AM(18) flag in CR0 register
89	*/	90	*/
90	static void clean_AM_flag(void)	91	static void clean_AM_flag(void)
91	{	92	{
92	asm volatile (	93	asm volatile (
93	"mov %%cr0, %%rax\n"	94	"mov %%cr0, %%rax\n"
94	"and $~(0x40000), %%rax\n"	95	"and $~(0x40000), %%rax\n"
95	"mov %%rax, %%cr0\n"	96	"mov %%rax, %%cr0\n"
96	::: "%rax"	97	::: "%rax"
97	);	98	);
98	}	99	}
99		100
100	/** Perform amd64-specific initialization before main_bsp() is called.	101	/** Perform amd64-specific initialization before main_bsp() is called.
101	*	102	*
102	* @param signature Should contain the multiboot signature.	103	* @param signature Should contain the multiboot signature.
103	* @param mi Pointer to the multiboot information structure.	104	* @param mi Pointer to the multiboot information structure.
104	*/	105	*/
105	void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)	106	void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
106	{	107	{
107	/* Parse multiboot information obtained from the bootloader. */	108	/* Parse multiboot information obtained from the bootloader. */
108	multiboot_info_parse(signature, mi);	109	multiboot_info_parse(signature, mi);
109		110
110	#ifdef CONFIG_SMP	111	#ifdef CONFIG_SMP
111	/* Copy AP bootstrap routines below 1 MB. */	112	/* Copy AP bootstrap routines below 1 MB. */
112	memcpy((void ) AP_BOOT_OFFSET, (void ) BOOT_OFFSET,	113	memcpy((void ) AP_BOOT_OFFSET, (void ) BOOT_OFFSET,
113	(size_t) &_hardcoded_unmapped_size);	114	(size_t) &_hardcoded_unmapped_size);
114	#endif	115	#endif
115	}	116	}
116		117
117	void arch_pre_mm_init(void)	118	void arch_pre_mm_init(void)
118	{	119	{
119	/* Enable no-execute pages */	120	/* Enable no-execute pages */
120	set_efer_flag(AMD_NXE_FLAG);	121	set_efer_flag(AMD_NXE_FLAG);
121	/* Enable FPU */	122	/* Enable FPU */
122	cpu_setup_fpu();	123	cpu_setup_fpu();
123		124
124	/* Initialize segmentation */	125	/* Initialize segmentation */
125	pm_init();	126	pm_init();
126		127
127	/* Disable I/O on nonprivileged levels	128	/* Disable I/O on nonprivileged levels
128	* clear the NT (nested-thread) flag	129	* clear the NT (nested-thread) flag
129	*/	130	*/
130	clean_IOPL_NT_flags();	131	clean_IOPL_NT_flags();
131	/* Disable alignment check */	132	/* Disable alignment check */
132	clean_AM_flag();	133	clean_AM_flag();
133		134
134	if (config.cpu_active == 1) {	135	if (config.cpu_active == 1) {
135	interrupt_init();	136	interrupt_init();
136	bios_init();	137	bios_init();
137		138
138	/* PIC */	139	/* PIC */
139	i8259_init();	140	i8259_init();
140	}	141	}
141	}	142	}
142		143
143		144
144	void arch_post_mm_init(void)	145	void arch_post_mm_init(void)
145	{	146	{
146	if (config.cpu_active == 1) {	147	if (config.cpu_active == 1) {
147	/* Initialize IRQ routing */	148	/* Initialize IRQ routing */
148	irq_init(IRQ_COUNT, IRQ_COUNT);	149	irq_init(IRQ_COUNT, IRQ_COUNT);
149		150
150	/* hard clock */	151	/* hard clock */
151	i8254_init();	152	i8254_init();
152		153
153	#ifdef CONFIG_FB	154	#ifdef CONFIG_FB
154	if (vesa_present())	155	if (vesa_present())
155	vesa_init();	156	vesa_init();
156	else	157	else
157	#endif	158	#endif
158	ega_init(EGA_BASE, EGA_VIDEORAM); /* video */	159	ega_init(EGA_BASE, EGA_VIDEORAM); /* video */
159		160
160	/* Enable debugger */	161	/* Enable debugger */
161	debugger_init();	162	debugger_init();
162	/* Merge all memory zones to 1 big zone */	163	/* Merge all memory zones to 1 big zone */
163	zone_merge_all();	164	zone_merge_all();
164	}	165	}
165		166
166	/* Setup fast SYSCALL/SYSRET */	167	/* Setup fast SYSCALL/SYSRET */
167	syscall_setup_cpu();	168	syscall_setup_cpu();
168	}	169	}
169		170
170	void arch_post_cpu_init()	171	void arch_post_cpu_init()
171	{	172	{
172	#ifdef CONFIG_SMP	173	#ifdef CONFIG_SMP
173	if (config.cpu_active > 1) {	174	if (config.cpu_active > 1) {
174	l_apic_init();	175	l_apic_init();
175	l_apic_debug();	176	l_apic_debug();
176	}	177	}
177	#endif	178	#endif
178	}	179	}
179		180
180	void arch_pre_smp_init(void)	181	void arch_pre_smp_init(void)
181	{	182	{
182	if (config.cpu_active == 1) {	183	if (config.cpu_active == 1) {
183	#ifdef CONFIG_SMP	184	#ifdef CONFIG_SMP
184	acpi_init();	185	acpi_init();
185	#endif /* CONFIG_SMP */	186	#endif /* CONFIG_SMP */
186	}	187	}
187	}	188	}
188		189
189	void arch_post_smp_init(void)	190	void arch_post_smp_init(void)
190	{	191	{
191	devno_t devno = device_assign_devno();	192	devno_t devno = device_assign_devno();
-		193
-		194	/*
-		195	* Initialize the keyboard module and conect it to stdin. Then
-		196	* initialize the i8042 controller and connect it to kbrdin. Enable
192	/* keyboard controller */	197	* keyboard interrupts.
-		198	*/
-		199	kbrd_init(stdin);
193	(void) i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD);	200	(void) i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD, &kbrdin);
-		201	trap_virtual_enable_irqs(1 << IRQ_KBD);
194		202
195	/*	203	/*
196	* This is the necessary evil until the userspace driver is entirely	204	* This is the necessary evil until the userspace driver is entirely
197	* self-sufficient.	205	* self-sufficient.
198	*/	206	*/
199	sysinfo_set_item_val("kbd", NULL, true);	207	sysinfo_set_item_val("kbd", NULL, true);
200	sysinfo_set_item_val("kbd.devno", NULL, devno);	208	sysinfo_set_item_val("kbd.devno", NULL, devno);
201	sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);	209	sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
202	sysinfo_set_item_val("kbd.address.physical", NULL,	210	sysinfo_set_item_val("kbd.address.physical", NULL,
203	(uintptr_t) I8042_BASE);	211	(uintptr_t) I8042_BASE);
204	sysinfo_set_item_val("kbd.address.kernel", NULL,	212	sysinfo_set_item_val("kbd.address.kernel", NULL,
205	(uintptr_t) I8042_BASE);	213	(uintptr_t) I8042_BASE);
206	}	214	}
207		215
208	void calibrate_delay_loop(void)	216	void calibrate_delay_loop(void)
209	{	217	{
210	i8254_calibrate_delay_loop();	218	i8254_calibrate_delay_loop();
211	if (config.cpu_active == 1) {	219	if (config.cpu_active == 1) {
212	/*	220	/*
213	* This has to be done only on UP.	221	* This has to be done only on UP.
214	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.	222	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
215	*/	223	*/
216	i8254_normal_operation();	224	i8254_normal_operation();
217	}	225	}
218	}	226	}
219		227
220	/** Set thread-local-storage pointer	228	/** Set thread-local-storage pointer
221	*	229	*
222	* TLS pointer is set in FS register. Unfortunately the 64-bit	230	* TLS pointer is set in FS register. Unfortunately the 64-bit
223	* part can be set only in CPL0 mode.	231	* part can be set only in CPL0 mode.
224	*	232	*
225	* The specs say, that on %fs:0 there is stored contents of %fs register,	233	* The specs say, that on %fs:0 there is stored contents of %fs register,
226	* we need not to go to CPL0 to read it.	234	* we need not to go to CPL0 to read it.
227	*/	235	*/
228	unative_t sys_tls_set(unative_t addr)	236	unative_t sys_tls_set(unative_t addr)
229	{	237	{
230	THREAD->arch.tls = addr;	238	THREAD->arch.tls = addr;
231	write_msr(AMD_MSR_FS, addr);	239	write_msr(AMD_MSR_FS, addr);
232	return 0;	240	return 0;
233	}	241	}
234		242
235	/** Acquire console back for kernel	243	/** Acquire console back for kernel
236	*	244	*
237	*/	245	*/
238	void arch_grab_console(void)	246	void arch_grab_console(void)
239	{	247	{
240	#ifdef CONFIG_FB	248	#ifdef CONFIG_FB
241	vesa_redraw();	249	vesa_redraw();
242	#else	250	#else
243	ega_redraw();	251	ega_redraw();
244	#endif	252	#endif
245	}	253	}
246		254
247	/** Return console to userspace	255	/** Return console to userspace
248	*	256	*
249	*/	257	*/
250	void arch_release_console(void)	258	void arch_release_console(void)
251	{	259	{
252	}	260	}
253		261
254	/** Construct function pointer	262	/** Construct function pointer
255	*	263	*
256	* @param fptr function pointer structure	264	* @param fptr function pointer structure
257	* @param addr function address	265	* @param addr function address
258	* @param caller calling function address	266	* @param caller calling function address
259	*	267	*
260	* @return address of the function pointer	268	* @return address of the function pointer
261	*	269	*
262	*/	270	*/
263	void arch_construct_function(fncptr_t fptr, void addr, void caller)	271	void arch_construct_function(fncptr_t fptr, void addr, void caller)
264	{	272	{
265	return addr;	273	return addr;
266	}	274	}
267		275
268	/** @}	276	/** @}
269	*/	277	*/
270		278

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(root)/tags/0.4.1/kernel/arch/amd64/src/amd64.c @ 4750 – Rev 4026 → 4042