Differential D32338 Diff 96660 sys/arm64/arm64/machdep.c

Changeset View

Standalone View

sys/arm64/arm64/machdep.c

Show First 20 Lines • Show All 96 Lines • ▼ Show 20 Lines

#ifdef FDT		#ifdef FDT
#include <dev/fdt/fdt_common.h>		#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>		#include <dev/ofw/openfirm.h>
#endif		#endif

enum arm64_bus arm64_bus_method = ARM64_BUS_NONE;		enum arm64_bus arm64_bus_method = ARM64_BUS_NONE;

struct pcpu __pcpu[MAXCPU];		/*
		* XXX: The .bss is assumed to be in the boot CPU NUMA domain. If not we
		markjUnsubmitted Not Done Inline Actions Isn't this the same as `cpuid_to_pcpu[]` now? Do we need `__pcpu[]` at all? markj: Isn't this the same as `cpuid_to_pcpu[]` now? Do we need `__pcpu[]` at all?
		* could relocate this, but will need to keep the same virtual address as
		* it's reverenced by the EARLY_COUNTER macro.
		*/
		struct pcpu pcpu0;

static struct trapframe proc0_tf;		static struct trapframe proc0_tf;

int early_boot = 1;		int early_boot = 1;
int cold = 1;		int cold = 1;
static int boot_el;		static int boot_el;

struct kva_md_info kmi;		struct kva_md_info kmi;
▲ Show 20 Lines • Show All 215 Lines • ▼ Show 20 Lines	makectx(struct trapframe tf, struct pcb pcb)
/* NB: pcb_lr is the PC, see PC_REGS() in db_machdep.h */		/* NB: pcb_lr is the PC, see PC_REGS() in db_machdep.h */
pcb->pcb_lr = tf->tf_elr;		pcb->pcb_lr = tf->tf_elr;
pcb->pcb_sp = tf->tf_sp;		pcb->pcb_sp = tf->tf_sp;
}		}

static void		static void
init_proc0(vm_offset_t kstack)		init_proc0(vm_offset_t kstack)
{		{
struct pcpu *pcpup = &__pcpu[0];		struct pcpu *pcpup;

		pcpup = cpuid_to_pcpu[0];
		MPASS(pcpup != NULL);

proc_linkup0(&proc0, &thread0);		proc_linkup0(&proc0, &thread0);
thread0.td_kstack = kstack;		thread0.td_kstack = kstack;
thread0.td_kstack_pages = KSTACK_PAGES;		thread0.td_kstack_pages = KSTACK_PAGES;
thread0.td_pcb = (struct pcb *)(thread0.td_kstack +		thread0.td_pcb = (struct pcb *)(thread0.td_kstack +
thread0.td_kstack_pages * PAGE_SIZE) - 1;		thread0.td_kstack_pages * PAGE_SIZE) - 1;
thread0.td_pcb->pcb_fpflags = 0;		thread0.td_pcb->pcb_fpflags = 0;
thread0.td_pcb->pcb_fpusaved = &thread0.td_pcb->pcb_fpustate;		thread0.td_pcb->pcb_fpusaved = &thread0.td_pcb->pcb_fpustate;
thread0.td_pcb->pcb_vfpcpu = UINT_MAX;		thread0.td_pcb->pcb_vfpcpu = UINT_MAX;
▲ Show 20 Lines • Show All 410 Lines • ▼ Show 20 Lines	#endif
/* Exclude the EFI framebuffer from our view of physical memory. */		/* Exclude the EFI framebuffer from our view of physical memory. */
efifb = (struct efi_fb *)preload_search_info(kmdp,		efifb = (struct efi_fb *)preload_search_info(kmdp,
MODINFO_METADATA \| MODINFOMD_EFI_FB);		MODINFO_METADATA \| MODINFOMD_EFI_FB);
if (efifb != NULL)		if (efifb != NULL)
physmem_exclude_region(efifb->fb_addr, efifb->fb_size,		physmem_exclude_region(efifb->fb_addr, efifb->fb_size,
EXFLAG_NOALLOC);		EXFLAG_NOALLOC);

/* Set the pcpu data, this is needed by pmap_bootstrap */		/* Set the pcpu data, this is needed by pmap_bootstrap */
pcpup = &__pcpu[0];		pcpup = &pcpu0;
		markjUnsubmitted Not Done Inline Actions We assume that .bss is allocated from the domain to which the BSP belongs. That's probably true in practice though, at least amd64 makes a similar assumption when it allocates the pcpu area in pmap_bootstrap(). markj: We assume that .bss is allocated from the domain to which the BSP belongs. That's probably true…
pcpu_init(pcpup, 0, sizeof(struct pcpu));		pcpu_init(pcpup, 0, sizeof(struct pcpu));

/*		/*
* Set the pcpu pointer with a backup in tpidr_el1 to be		* Set the pcpu pointer with a backup in tpidr_el1 to be
* loaded when entering the kernel from userland.		* loaded when entering the kernel from userland.
*/		*/
__asm __volatile(		__asm __volatile(
"mov x18, %0 \n"		"mov x18, %0 \n"
▲ Show 20 Lines • Show All 189 Lines • Show Last 20 Lines