Пример #1
0
/*
 * Find out what kind of machine we're on and save any data we need
 * from the early boot process (devtree is copied on pmac by prom_init()).
 * This is called very early on the boot process, after a minimal
 * MMU environment has been set up but before MMU_init is called.
 */
notrace void __init machine_init(unsigned long dt_ptr)
{
	/* Enable early debugging if any specified (see udbg.h) */
	udbg_early_init();

	/* Do some early initialization based on the flat device tree */
	early_init_devtree(__va(dt_ptr));

	probe_machine();

	setup_kdump_trampoline();

#ifdef CONFIG_6xx
	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
	    cpu_has_feature(CPU_FTR_CAN_NAP))
		ppc_md.power_save = ppc6xx_idle;
#endif

#ifdef CONFIG_E500
	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
	    cpu_has_feature(CPU_FTR_CAN_NAP))
		ppc_md.power_save = e500_idle;
#endif
	if (ppc_md.progress)
		ppc_md.progress("id mach(): done", 0x200);
}
Пример #2
0
notrace void __init machine_init(u64 dt_ptr)
{
	/* Enable early debugging if any specified (see udbg.h) */
	udbg_early_init();

	patch_instruction((unsigned int *)&memcpy, PPC_INST_NOP);
	patch_instruction(&memset_nocache_branch, PPC_INST_NOP);

	/* Do some early initialization based on the flat device tree */
	early_init_devtree(__va(dt_ptr));

	epapr_paravirt_early_init();

	early_init_mmu();

	probe_machine();

	setup_kdump_trampoline();

#ifdef CONFIG_6xx
	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
	    cpu_has_feature(CPU_FTR_CAN_NAP))
		ppc_md.power_save = ppc6xx_idle;
#endif

#ifdef CONFIG_E500
	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
	    cpu_has_feature(CPU_FTR_CAN_NAP))
		ppc_md.power_save = e500_idle;
#endif
	if (ppc_md.progress)
		ppc_md.progress("id mach(): done", 0x200);
}
Пример #3
0
notrace void __init machine_init(u64 dt_ptr)
{
	lockdep_init();

	
	udbg_early_init();

	
	early_init_devtree(__va(dt_ptr));

	early_init_mmu();

	probe_machine();

	setup_kdump_trampoline();

#ifdef CONFIG_6xx
	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
	    cpu_has_feature(CPU_FTR_CAN_NAP))
		ppc_md.power_save = ppc6xx_idle;
#endif

#ifdef CONFIG_E500
	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
	    cpu_has_feature(CPU_FTR_CAN_NAP))
		ppc_md.power_save = e500_idle;
#endif
	if (ppc_md.progress)
		ppc_md.progress("id mach(): done", 0x200);
}
Пример #4
0
void __init early_setup(unsigned long dt_ptr)
{
	/* Identify CPU type */
	identify_cpu(0, mfspr(SPRN_PVR));

	/* Assume we're on cpu 0 for now. Don't write to the paca yet! */
	setup_paca(0);

	/* Enable early debugging if any specified (see udbg.h) */
	udbg_early_init();

 	DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);

	/*
	 * Do early initializations using the flattened device
	 * tree, like retreiving the physical memory map or
	 * calculating/retreiving the hash table size
	 */
	early_init_devtree(__va(dt_ptr));

	/* Now we know the logical id of our boot cpu, setup the paca. */
	setup_paca(boot_cpuid);

	/* Fix up paca fields required for the boot cpu */
	get_paca()->cpu_start = 1;
	get_paca()->stab_real = __pa((u64)&initial_stab);
	get_paca()->stab_addr = (u64)&initial_stab;

	/* Probe the machine type */
	probe_machine();

	setup_kdump_trampoline();

	DBG("Found, Initializing memory management...\n");

	/*
	 * Initialize the MMU Hash table and create the linear mapping
	 * of memory. Has to be done before stab/slb initialization as
	 * this is currently where the page size encoding is obtained
	 */
	htab_initialize();

	/*
	 * Initialize stab / SLB management except on iSeries
	 */
	if (cpu_has_feature(CPU_FTR_SLB))
		slb_initialize();
	else if (!firmware_has_feature(FW_FEATURE_ISERIES))
		stab_initialize(get_paca()->stab_real);

	DBG(" <- early_setup()\n");
}
Пример #5
0
void __init early_setup(unsigned long dt_ptr)
{
	/* -------- printk is _NOT_ safe to use here ! ------- */

	/* Fill in any unititialised pacas */
	initialise_pacas();

	/* Identify CPU type */
	identify_cpu(0, mfspr(SPRN_PVR));

	/* Assume we're on cpu 0 for now. Don't write to the paca yet! */
	setup_paca(0);

	/* Initialize lockdep early or else spinlocks will blow */
	lockdep_init();

	/* -------- printk is now safe to use ------- */

	/* Enable early debugging if any specified (see udbg.h) */
	udbg_early_init();

 	DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);

	/*
	 * Do early initialization using the flattened device
	 * tree, such as retrieving the physical memory map or
	 * calculating/retrieving the hash table size.
	 */
	early_init_devtree(__va(dt_ptr));

	/* Now we know the logical id of our boot cpu, setup the paca. */
	setup_paca(boot_cpuid);

	/* Fix up paca fields required for the boot cpu */
	get_paca()->cpu_start = 1;

	/* Probe the machine type */
	probe_machine();

	setup_kdump_trampoline();

	DBG("Found, Initializing memory management...\n");

	/* Initialize the hash table or TLB handling */
	early_init_mmu();

	DBG(" <- early_setup()\n");
}