UEFI port of Fdtlib

["Olivier Martin" <olivier.martin-5wv7dgnIgG8@public.gmane.org>]

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Hello all,

I have ported the libfdt to Tianocore project [1] (under BSD license) which
is an implementation of UEFI specification supported by Intel, ARM Ltd and
other major companies.
I took the libfdt directory from the head revision of
git://git.jdl.com/software/dtc.git and ported it to the Tianocore project.
I had just needed to edit the libfdt_env.h to translate the POSIX types and
functions into their Tianocore equivalents.
I was advised to send my changes to this mailing-list (please find the
edited lifdt_env.h attached to this email).

I am using this libfdt library to add/update information to the Device Tree
(Linux kernel cmd line, etc) that is passed to the Linux kernel. I am
planning to push upstream my changes in the next couple of days.

Questions and comment are welcome !

Best Regards,
Olivier

[1] http://sourceforge.net/apps/mediawiki/tianocore/

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#ifndef _LIBFDT_ENV_H
#define _LIBFDT_ENV_H

#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>

typedef UINT8 uint8_t;
typedef UINT32 uint32_t;
typedef UINT64 uint64_t;
typedef UINTN uintptr_t;
typedef UINTN size_t;

#define _B(n)	((unsigned long long)((uint8_t *)&x)[n])
static inline uint32_t fdt32_to_cpu(uint32_t x)
{
	return (_B(0) << 24) | (_B(1) << 16) | (_B(2) << 8) | _B(3);
}
#define cpu_to_fdt32(x) fdt32_to_cpu(x)

static inline uint64_t fdt64_to_cpu(uint64_t x)
{
	return (_B(0) << 56) | (_B(1) << 48) | (_B(2) << 40) | (_B(3) << 32)
		| (_B(4) << 24) | (_B(5) << 16) | (_B(6) << 8) | _B(7);
}
#define cpu_to_fdt64(x) fdt64_to_cpu(x)
#undef _B

static inline void* memcpy(void* dest, const void* src, size_t len) {
  return CopyMem (dest, src, len);
}

static inline void *memmove(void *dest, const void *src, size_t n) {
  return CopyMem (dest, src, n);
}

static inline void *memset(void *s, int c, size_t n) {
  return SetMem (s, n, c);
}

static inline int memcmp(const void* dest, const void* src, int len) {
  return CompareMem (dest, src, len);
}

static inline void *memchr(const void *s, int c, size_t n) {
  return ScanMem8 (s, n, c);
}

static inline size_t strlen (const char* str) {
  return AsciiStrLen (str);
}

static inline char *strchr(const char *s, int c) {
  char pattern[2];
  pattern[0] = c;
  pattern[1] = 0;
  return AsciiStrStr (s, pattern);
}

#endif /* _LIBFDT_ENV_H */

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