MAJOR=4
MINOR=44
DEVNAME=tty44
  *   ˆl–Ü4ý( ©³( 	Å€fàB¦-ÿ¿ƒ-‡_†I|¥+ÃÂ 	/    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_GENERIC_PAGE_H
#define __ASM_GENERIC_PAGE_H
/*
 * Generic page.h implementation, for NOMMU architectures.
 * This provides the dummy definitions for the memory management.
 */

#ifdef CONFIG_MMU
#error need to provide a real asm/page.h
#endif


/* PAGE_SHIFT determines the page size */

#define PAGE_SHIFT	12
#ifdef __ASSEMBLY__
#define PAGE_SIZE	(1 << PAGE_SHIFT)
#else
#define PAGE_SIZE	(1UL << PAGE_SHIFT)
#endif
#define PAGE_MASK	(~(PAGE_SIZE-1))

#include <asm/setup.h>

#ifndef __ASSEMBLY__

#define clear_page(page)	memset((page), 0, PAGE_SIZE)
#define copy_page(to,from)	memcpy((to), (from), PAGE_SIZE)

#define clear_user_page(page, vaddr, pg)	clear_page(page)
#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)

/*
 * These are used to make use of C type-checking..
 */
typedef struct {
	unsigned long pte;
} pte_t;
typedef struct {
	unsigned long pmd[16];
} pmd_t;
typedef struct {
	unsigned long pgd;
} pgd_t;
typedef struct {
	unsigned long pgprot;
} pgprot_t;
typedef struct page *pgtable_t;

#define pte_val(x)	((x).pte)
#define pmd_val(x)	((&x)->pmd[0])
#define pgd_val(x)	((x).pgd)
#define pgprot_val(x)	((x).pgprot)

#define __pte(x)	((pte_t) { (x) } )
#define __pmd(x)	((pmd_t) { (x) } )
#define __pgd(x)	((pgd_t) { (x) } )
#define __pgprot(x)	((pgprot_t) { (x) } )

extern unsigned long memory_start;
extern unsigned long memory_end;

#endif /* !__ASSEMBLY__ */

#define PAGE_OFFSET		(0)

#ifndef ARCH_PFN_OFFSET
#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
#endif

#ifndef __ASSEMBLY__

#define __va(x) ((void *)((unsigned long) (x)))
#define __pa(x) ((unsigned long) (x))

#define virt_to_pfn(kaddr)	(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn)	__va((pfn) << PAGE_SHIFT)

#define virt_to_page(addr)	pfn_to_page(virt_to_pfn(addr))
#define page_to_virt(page)	pfn_to_virt(page_to_pfn(page))

#ifndef page_to_phys
#define page_to_phys(page)      ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
#endif

#define pfn_valid(pfn)		((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)

#define	virt_addr_valid(kaddr)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
				((void *)(kaddr) < (void *)memory_end))

#endif /* __ASSEMBLY__ */

#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>

#endif /* __ASM_GENERIC_PAGE_H */
     ˆ¿ÀƒyÇC¾ÃÂ !ß    // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
/*
 * libfdt - Flat Device Tree manipulation
 * Copyright (C) 2006 David Gibson, IBM Corporation.
 */
#include "libfdt_env.h"

#include <fdt.h>
#include <libfdt.h>

#include "libfdt_internal.h"

static int fdt_sw_probe_(void *fdt)
{
	if (!can_assume(VALID_INPUT)) {
		if (fdt_magic(fdt) == FDT_MAGIC)
			return -FDT_ERR_BADSTATE;
		else if (fdt_magic(fdt) != FDT_SW_MAGIC)
			return -FDT_ERR_BADMAGIC;
	}

	return 0;
}

#define FDT_SW_PROBE(fdt) \
	{ \
		int err; \
		if ((err = fdt_sw_probe_(fdt)) != 0) \
			return err; \
	}

/* 'memrsv' state:	Initial state after fdt_create()
 *
 * Allowed functions:
 *	fdt_add_reservemap_entry()
 *	fdt_finish_reservemap()		[moves to 'struct' state]
 */
static int fdt_sw_probe_memrsv_(void *fdt)
{
	int err = fdt_sw_probe_(fdt);
	if (err)
		return err;

	if (!can_assume(VALID_INPUT) && fdt_off_dt_strings(fdt) != 0)
		return -FDT_ERR_BADSTATE;
	return 0;
}

#define FDT_SW_PROBE_MEMRSV(fdt) \
	{ \
		int err; \
		if ((err = fdt_sw_probe_memrsv_(fdt)) != 0) \
			return err; \
	}

/* 'struct' state:	Enter this state after fdt_finish_reservemap()
 *
 * Allowed functions:
 *	fdt_begin_node()
 *	fdt_end_node()
 *	fdt_property*()
 *	fdt_finish()			[moves to 'complete' state]
 */
static int fdt_sw_probe_struct_(void *fdt)
{
	int err = fdt_sw_probe_(fdt);
	if (err)
		return err;

	if (!can_assume(VALID_INPUT) &&
	    fdt_off_dt_strings(fdt) != fdt_totalsize(fdt))
		return -FDT_ERR_BADSTATE;
	return 0;
}

#define FDT_SW_PROBE_STRUCT(fdt) \
	{ \
		int err; \
		if ((err = fdt_sw_probe_struct_(fdt)) != 0) \
			return err