WebSVN – HelenOS – Blame – //branches/sparc/kernel/arch/sparc64/src/sun4v/sparc64.c

Rev	Author	Line No.	Line
3743	rimsky	1	/*
		2	* Copyright (c) 2005 Jakub Jermar
		3	* All rights reserved.
		4	*
		5	* Redistribution and use in source and binary forms, with or without
		6	* modification, are permitted provided that the following conditions
		7	* are met:
		8	*
		9	* - Redistributions of source code must retain the above copyright
		10	* notice, this list of conditions and the following disclaimer.
		11	* - Redistributions in binary form must reproduce the above copyright
		12	* notice, this list of conditions and the following disclaimer in the
		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
		15	* derived from this software without specific prior written permission.
		16	*
		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
		19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		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
		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
		26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*/
		28
		29	/** @addtogroup sparc64
		30	* @{
		31	*/
		32	/** @file
		33	*/
		34
		35	#include <arch.h>
		36	#include <debug.h>
		37	#include <config.h>
		38	#include <arch/trap/trap.h>
		39	#include <arch/console.h>
		40	#include <proc/thread.h>
		41	#include <console/console.h>
		42	#include <arch/boot/boot.h>
		43	#include <arch/arch.h>
		44	#include <arch/asm.h>
		45	#include <arch/mm/page.h>
		46	#include <arch/stack.h>
		47	#include <genarch/ofw/ofw_tree.h>
		48	#include <userspace.h>
		49	#include <ddi/irq.h>
		50	#include <print.h>
		51
		52	#include <arch/drivers/niagara.h>
		53
		54	bootinfo_t bootinfo;
		55
		56	/** Perform sparc64 specific initialization before main_bsp() is called. */
		57	void arch_pre_main(void)
		58	{
3748	rimsky	59	/*
		60	* Initialize Niagara input/output driver.
		61	* This will be moved to arch_post_mm_init when the memory management
		62	* is finished for sun4v.
		63	*/
3743	rimsky	64	niagara_init();
		65
		66	/* Copy init task info. */
		67	init.cnt = bootinfo.taskmap.count;
3748	rimsky	68
3743	rimsky	69	uint32_t i;
		70
		71	for (i = 0; i < bootinfo.taskmap.count; i++) {
		72	init.tasks[i].addr = (uintptr_t) bootinfo.taskmap.tasks[i].addr;
		73	init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
		74	}
		75
		76	/* Copy boot allocations info. */
		77	ballocs.base = bootinfo.ballocs.base;
		78	ballocs.size = bootinfo.ballocs.size;
		79
		80	ofw_tree_init(bootinfo.ofw_root);
		81	}
		82
		83	/** Perform sparc64 specific initialization before mm is initialized. */
		84	void arch_pre_mm_init(void)
		85	{
		86	if (config.cpu_active == 1)
		87	trap_init();
		88	}
		89
		90	/** Perform sparc64 specific initialization afterr mm is initialized. */
		91	void arch_post_mm_init(void)
		92	{
		93	if (config.cpu_active == 1) {
		94	/*
		95	* We have 2^11 different interrupt vectors.
		96	* But we only create 128 buckets.
		97	*/
		98	irq_init(1 << 11, 128);
		99
		100	standalone_sparc64_console_init();
		101	}
		102	}
		103
		104	void arch_post_cpu_init(void)
		105	{
		106	}
		107
		108	void arch_pre_smp_init(void)
		109	{
		110	}
		111
		112	void arch_post_smp_init(void)
		113	{
		114	static thread_t *t = NULL;
		115
		116
		117	if (!t) {
		118	/*
		119	* Create thread that polls keyboard.
		120	*/
		121	t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
		122	if (!t)
		123	panic("cannot create kkbdpoll\n");
		124	thread_ready(t);
		125	}
		126	}
		127
		128	/** Calibrate delay loop.
		129	*
		130	* On sparc64, we implement delay() by waiting for the TICK register to
		131	* reach a pre-computed value, as opposed to performing some pre-computed
		132	* amount of instructions of known duration. We set the delay_loop_const
		133	* to 1 in order to neutralize the multiplication done by delay().
		134	*/
		135	void calibrate_delay_loop(void)
		136	{
		137	CPU->delay_loop_const = 1;
		138	}
		139
		140	/** Wait several microseconds.
		141	*
		142	* We assume that interrupts are already disabled.
		143	*
		144	* @param t Microseconds to wait.
		145	*/
		146	void asm_delay_loop(const uint32_t usec)
		147	{
		148	uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
		149	CPU->arch.clock_frequency / 1000000;
		150
		151	while (tick_read() < stop)
		152	;
		153	}
		154
		155	/** Switch to userspace. */
		156	void userspace(uspace_arg_t *kernel_uarg)
		157	{
		158	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
		159	((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
		160	- (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
		161	(uintptr_t) kernel_uarg->uspace_uarg);
		162
		163	for (;;)
		164	;
		165	/* not reached */
		166	}
		167
		168	void arch_reboot(void)
		169	{
		170	// TODO
		171	while (1);
		172	}
		173
		174	/** @}
		175	*/

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