62 lines
1.8 KiB
C
Executable File
62 lines
1.8 KiB
C
Executable File
#ifndef __DTBFAST_H_
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#define __DTBFAST_H_
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#include <linux/types.h>
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#include <sys_config.h>
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#define DTBFAST_HEAD_MAX_DEPTH (16)
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struct dtbfast_header {
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uint32_t magic; /* magic word FDT_MAGIC */
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uint32_t totalsize; /* total file size */
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uint32_t level0_count; /* the count of level0 head */
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uint32_t off_head; /* offset to head */
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uint32_t head_count; /* total head */
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uint32_t off_prop; /* offset to prop */
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uint32_t prop_count; /* total prop */
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uint32_t reserved[9];
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};
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struct head_node {
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uint32_t name_sum; //完整名称的每个字符的累加和
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uint32_t name_sum_short; //不计算@之后字符的累加和
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uint32_t name_offset; //具体名称的偏移量，从dtb中寻找
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uint32_t name_bytes; //完整名称的长度
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uint32_t name_bytes_short;//@之前名称的长度
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uint32_t repeate_count;
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uint32_t head_offset; //指向第一个head的offset
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uint32_t head_count; //head总的个数
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uint32_t data_offset; //指向第一个prop的offset
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uint32_t data_count; //prop总的个数
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uint32_t reserved[2];
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};
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struct prop_node {
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uint32_t name_sum; //名称的每个字符的累加和
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uint32_t name_offset; //具体名称的偏移量，dtb中寻找
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uint32_t name_bytes; //具体名称的长度
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uint32_t offset; //具体prop的偏移量，dtb中寻找
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};
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int fdtfast_path_offset(const void *fdt, const char *path);
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int fdtfast_set_node_status(void *fdt, int nodeoffset, enum fdt_status status, unsigned int error_code);
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int fdtfast_setprop_u32(void *fdt, int nodeoffset, const char *name,
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uint32_t val);
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int fdtfast_getprop_u32(const void *fdt, int nodeoffset,
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const char *name, uint32_t *val);
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int fdtfast_getprop_string(const void *fdt, int nodeoffset,
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const char *name, char **val);
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int fdtfast_getprop_gpio(const void *fdt, int nodeoffset,
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const char* prop_name, user_gpio_set_t* gpio_list);
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#endif /* __DTBFAST_H_ */
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