#include <stdint.h>
#include <stdlib.h>
#include <string.h>

#include <flash.h>
#include <macros.h>

#include <fs/block.h>
#include <fs/part.h>

struct part_hdr {
	char magic[8];
	char rsv[24];
} __attribute__((packed));

struct part_entry {
	char label[16];
	uint32_t start, end;
	uint32_t flags;
	uint32_t rsv;
} __attribute__((packed));

#define PART_MAGIC "FL-PART\x7f"

int part_create(struct flash_dev *dev)
{
	struct part_hdr hdr;

	if (block_is_erased(dev, 0, 4 * KIB) != 0 &&
		flash_erase(dev, 0, 4 * KIB) != 0)
		return -1;

	memset(&hdr, 0, sizeof hdr);
	memcpy(hdr.magic, PART_MAGIC, sizeof hdr.magic);

	if (flash_write(dev, 0, &hdr, sizeof hdr) != 0)
		return -1;

	return 0;
}