Differential D14647 Diff 40247 head/sys/powerpc/powerpc/machdep.c

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head/sys/powerpc/powerpc/machdep.c

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	}			}

	extern vm_offset_t __startkernel, __endkernel;			extern vm_offset_t __startkernel, __endkernel;
	extern unsigned char __bss_start[];			extern unsigned char __bss_start[];
	extern unsigned char __sbss_start[];			extern unsigned char __sbss_start[];
	extern unsigned char __sbss_end[];			extern unsigned char __sbss_end[];
	extern unsigned char _end[];			extern unsigned char _end[];

				void aim_early_init(vm_offset_t fdt, vm_offset_t toc, vm_offset_t ofentry,
				void *mdp, uint32_t mdp_cookie);
	void aim_cpu_init(vm_offset_t toc);			void aim_cpu_init(vm_offset_t toc);
	void booke_cpu_init(void);			void booke_cpu_init(void);

	uintptr_t			uintptr_t
	powerpc_init(vm_offset_t fdt, vm_offset_t toc, vm_offset_t ofentry, void *mdp,			powerpc_init(vm_offset_t fdt, vm_offset_t toc, vm_offset_t ofentry, void *mdp,
	uint32_t mdp_cookie)			uint32_t mdp_cookie)
	{			{
	struct pcpu *pc;			struct pcpu *pc;
	struct cpuref bsp;			struct cpuref bsp;
	vm_offset_t startkernel, endkernel;			vm_offset_t startkernel, endkernel;
	void *kmdp;
	char *env;			char *env;
	bool ofw_bootargs = false;			bool ofw_bootargs = false;
	#ifdef DDB			#ifdef DDB
	vm_offset_t ksym_start;			vm_offset_t ksym_start;
	vm_offset_t ksym_end;			vm_offset_t ksym_end;
	#endif			#endif

	kmdp = NULL;

	/* First guess at start/end kernel positions */			/* First guess at start/end kernel positions */
	startkernel = __startkernel;			startkernel = __startkernel;
	endkernel = __endkernel;			endkernel = __endkernel;

	/*			/*
	* If the metadata pointer cookie is not set to the magic value,			* If the metadata pointer cookie is not set to the magic value,
	* the number in mdp should be treated as nonsense.			* the number in mdp should be treated as nonsense.
	*/			*/
	if (mdp_cookie != 0xfb5d104d)			if (mdp_cookie != 0xfb5d104d)
	mdp = NULL;			mdp = NULL;

	#if !defined(BOOKE)			#if !defined(BOOKE)
	/*			/*
	* On BOOKE the BSS is already cleared and some variables			* On BOOKE the BSS is already cleared and some variables
	* initialized. Do not wipe them out.			* initialized. Do not wipe them out.
	*/			*/
	bzero(__sbss_start, __sbss_end - __sbss_start);			bzero(__sbss_start, __sbss_end - __sbss_start);
	bzero(__bss_start, _end - __bss_start);			bzero(__bss_start, _end - __bss_start);
	#endif			#endif

	#ifdef AIM			#ifdef AIM
	/*			aim_early_init(fdt, toc, ofentry, mdp, mdp_cookie);
	* If running from an FDT, make sure we are in real mode to avoid
	* tromping on firmware page tables. Everything in the kernel assumes
	* 1:1 mappings out of firmware, so this won't break anything not
	* already broken. This doesn't work if there is live OF, since OF
	* may internally use non-1:1 mappings.
	*/
	if (ofentry == 0)
	mtmsr(mfmsr() & ~(PSL_IR \| PSL_DR));
	#endif			#endif

	/*			/*
	* Parse metadata if present and fetch parameters. Must be done			* Parse metadata if present and fetch parameters. Must be done
	* before console is inited so cninit gets the right value of			* before console is inited so cninit gets the right value of
	* boothowto.			* boothowto.
	*/			*/
	if (mdp != NULL) {			if (mdp != NULL) {
				void *kmdp = NULL;
				char *envp = NULL;
				uintptr_t md_offset = 0;
				vm_paddr_t kernelendphys;

				#ifdef AIM
				if ((uintptr_t)&powerpc_init > DMAP_BASE_ADDRESS)
				md_offset = DMAP_BASE_ADDRESS;
				#endif

	preload_metadata = mdp;			preload_metadata = mdp;
				if (md_offset > 0) {
				preload_metadata += md_offset;
				preload_bootstrap_relocate(md_offset);
				}
	kmdp = preload_search_by_type("elf kernel");			kmdp = preload_search_by_type("elf kernel");
	if (kmdp != NULL) {			if (kmdp != NULL) {
	boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);			boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
	init_static_kenv(MD_FETCH(kmdp, MODINFOMD_ENVP, char *),			envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
	0);			if (envp != NULL)
	endkernel = ulmax(endkernel, MD_FETCH(kmdp,			envp += md_offset;
	MODINFOMD_KERNEND, vm_offset_t));			init_static_kenv(envp, 0);
				kernelendphys = MD_FETCH(kmdp, MODINFOMD_KERNEND,
				vm_offset_t);
				if (kernelendphys != 0)
				kernelendphys += md_offset;
				endkernel = ulmax(endkernel, kernelendphys);
	#ifdef DDB			#ifdef DDB
	ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);			ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
	ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);			ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
	db_fetch_ksymtab(ksym_start, ksym_end);			db_fetch_ksymtab(ksym_start, ksym_end);
	#endif			#endif
	}			}
	} else {			} else {
	init_static_kenv(init_kenv, sizeof(init_kenv));			init_static_kenv(init_kenv, sizeof(init_kenv));
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