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110 lines
2.9 KiB
110 lines
2.9 KiB
6 years ago
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/*
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* libfdt - Flat Device Tree manipulation (build/run environment adaptation)
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* Copyright (C) 2007 Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
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* Original version written by David Gibson, IBM Corporation.
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*
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* SPDX-License-Identifier: LGPL-2.1+
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*/
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#ifndef _LIBFDT_ENV_H
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#define _LIBFDT_ENV_H
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#include "stdio.h"
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#include "sys/types.h"
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static int memcmp(const void * cs,const void * ct,size_t count)
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{
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const unsigned char *su1, *su2;
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signed char res = 0;
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for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
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if ((res = *su1 - *su2) != 0)
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break;
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return res;
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}
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static unsigned int strnlen(const char* s, unsigned int count)
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{
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const char *sc;
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for(sc = s;count -- && *sc != '\0';++sc)
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{
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}
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return (sc -s);
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}
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#define __LITTLE_ENDIAN
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typedef unsigned int uintptr_t;
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extern struct fdt_header *working_fdt; /* Pointer to the working fdt */
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typedef unsigned short fdt16_t;
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typedef unsigned int fdt32_t;
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typedef unsigned long long fdt64_t;
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#define uswap_16(x) \
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((((x) & 0xff00) >> 8) | \
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(((x) & 0x00ff) << 8))
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#define uswap_32(x) \
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((((x) & 0xff000000) >> 24) | \
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(((x) & 0x00ff0000) >> 8) | \
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(((x) & 0x0000ff00) << 8) | \
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(((x) & 0x000000ff) << 24))
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#define _uswap_64(x, sfx) \
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((((x) & 0xff00000000000000##sfx) >> 56) | \
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(((x) & 0x00ff000000000000##sfx) >> 40) | \
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(((x) & 0x0000ff0000000000##sfx) >> 24) | \
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(((x) & 0x000000ff00000000##sfx) >> 8) | \
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(((x) & 0x00000000ff000000##sfx) << 8) | \
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(((x) & 0x0000000000ff0000##sfx) << 24) | \
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(((x) & 0x000000000000ff00##sfx) << 40) | \
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(((x) & 0x00000000000000ff##sfx) << 56))
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#if 1
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# define uswap_64(x) _uswap_64(x, ull)
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#else
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# define uswap_64(x) _uswap_64(x, )
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#endif
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#ifdef __LITTLE_ENDIAN
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# define cpu_to_le16(x) (x)
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# define cpu_to_le32(x) (x)
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# define cpu_to_le64(x) (x)
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# define le16_to_cpu(x) (x)
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# define le32_to_cpu(x) (x)
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# define le64_to_cpu(x) (x)
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# define cpu_to_be16(x) uswap_16(x)
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# define cpu_to_be32(x) uswap_32(x)
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# define cpu_to_be64(x) uswap_64(x)
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# define be16_to_cpu(x) uswap_16(x)
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# define be32_to_cpu(x) uswap_32(x)
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# define be64_to_cpu(x) uswap_64(x)
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#define fdt32_to_cpu(x) be32_to_cpu(x)
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#define cpu_to_fdt32(x) cpu_to_be32(x)
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#define fdt64_to_cpu(x) be64_to_cpu(x)
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#define cpu_to_fdt64(x) cpu_to_be64(x)
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#else
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# define cpu_to_le16(x) uswap_16(x)
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# define cpu_to_le32(x) uswap_32(x)
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# define cpu_to_le64(x) uswap_64(x)
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# define le16_to_cpu(x) uswap_16(x)
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# define le32_to_cpu(x) uswap_32(x)
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# define le64_to_cpu(x) uswap_64(x)
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# define cpu_to_be16(x) (x)
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# define cpu_to_be32(x) (x)
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# define cpu_to_be64(x) (x)
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# define be16_to_cpu(x) (x)
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# define be32_to_cpu(x) (x)
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# define be64_to_cpu(x) (x)
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#define fdt32_to_cpu(x) be32_to_cpu(x)
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#define cpu_to_fdt32(x) cpu_to_be32(x)
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#define fdt64_to_cpu(x) be64_to_cpu(x)
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#define cpu_to_fdt64(x) cpu_to_be64(x)
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#endif
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/* adding a ramdisk needs 0x44 bytes in version 2008.10 */
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#define FDT_RAMDISK_OVERHEAD 0x80
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#endif /* _LIBFDT_ENV_H */
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