+#define IBR_HDR_SDIO_ID 0xAE
+#define IBR_DEF_ATTRIB 0x00
+
+/* Structure of the main header, version 0 (Kirkwood, Dove) */
+struct main_hdr_v0 {
+ uint8_t blockid; /* 0x0 */
+ uint8_t nandeccmode; /* 0x1 */
+ uint16_t nandpagesize; /* 0x2-0x3 */
+ uint32_t blocksize; /* 0x4-0x7 */
+ uint32_t rsvd1; /* 0x8-0xB */
+ uint32_t srcaddr; /* 0xC-0xF */
+ uint32_t destaddr; /* 0x10-0x13 */
+ uint32_t execaddr; /* 0x14-0x17 */
+ uint8_t satapiomode; /* 0x18 */
+ uint8_t rsvd3; /* 0x19 */
+ uint16_t ddrinitdelay; /* 0x1A-0x1B */
+ uint16_t rsvd2; /* 0x1C-0x1D */
+ uint8_t ext; /* 0x1E */
+ uint8_t checksum; /* 0x1F */
+} __packed;
+
+struct ext_hdr_v0_reg {
+ uint32_t raddr;
+ uint32_t rdata;
+} __packed;
+
+#define EXT_HDR_V0_REG_COUNT ((0x1dc - 0x20) / sizeof(struct ext_hdr_v0_reg))
+
+struct ext_hdr_v0 {
+ uint32_t offset;
+ uint8_t reserved[0x20 - sizeof(uint32_t)];
+ struct ext_hdr_v0_reg rcfg[EXT_HDR_V0_REG_COUNT];
+ uint8_t reserved2[7];
+ uint8_t checksum;
+} __packed;
+
+/* Structure of the main header, version 1 (Armada 370/XP/375/38x/39x) */
+struct main_hdr_v1 {
+ uint8_t blockid; /* 0x0 */
+ uint8_t flags; /* 0x1 */
+ uint16_t reserved2; /* 0x2-0x3 */
+ uint32_t blocksize; /* 0x4-0x7 */
+ uint8_t version; /* 0x8 */
+ uint8_t headersz_msb; /* 0x9 */
+ uint16_t headersz_lsb; /* 0xA-0xB */
+ uint32_t srcaddr; /* 0xC-0xF */
+ uint32_t destaddr; /* 0x10-0x13 */
+ uint32_t execaddr; /* 0x14-0x17 */
+ uint8_t options; /* 0x18 */
+ uint8_t nandblocksize; /* 0x19 */
+ uint8_t nandbadblklocation; /* 0x1A */
+ uint8_t reserved4; /* 0x1B */
+ uint16_t reserved5; /* 0x1C-0x1D */
+ uint8_t ext; /* 0x1E */
+ uint8_t checksum; /* 0x1F */
+} __packed;
+
+/*
+ * Main header options
+ */
+#define MAIN_HDR_V1_OPT_BAUD_DEFAULT 0
+#define MAIN_HDR_V1_OPT_BAUD_2400 0x1
+#define MAIN_HDR_V1_OPT_BAUD_4800 0x2
+#define MAIN_HDR_V1_OPT_BAUD_9600 0x3
+#define MAIN_HDR_V1_OPT_BAUD_19200 0x4
+#define MAIN_HDR_V1_OPT_BAUD_38400 0x5
+#define MAIN_HDR_V1_OPT_BAUD_57600 0x6
+#define MAIN_HDR_V1_OPT_BAUD_115200 0x7
+
+/*
+ * Header for the optional headers, version 1 (Armada 370/XP/375/38x/39x)
+ */
+struct opt_hdr_v1 {
+ uint8_t headertype;
+ uint8_t headersz_msb;
+ uint16_t headersz_lsb;
+ char data[0];
+} __packed;
+
+/*
+ * Public Key data in DER format
+ */
+struct pubkey_der_v1 {
+ uint8_t key[524];
+} __packed;
+
+/*
+ * Signature (RSA 2048)
+ */
+struct sig_v1 {
+ uint8_t sig[256];
+} __packed;
+
+/*
+ * Structure of secure header (Armada XP/375/38x/39x)
+ */
+struct secure_hdr_v1 {
+ uint8_t headertype; /* 0x0 */
+ uint8_t headersz_msb; /* 0x1 */
+ uint16_t headersz_lsb; /* 0x2 - 0x3 */
+ uint32_t reserved1; /* 0x4 - 0x7 */
+ struct pubkey_der_v1 kak; /* 0x8 - 0x213 */
+ uint8_t jtag_delay; /* 0x214 */
+ uint8_t reserved2; /* 0x215 */
+ uint16_t reserved3; /* 0x216 - 0x217 */
+ uint32_t boxid; /* 0x218 - 0x21B */
+ uint32_t flashid; /* 0x21C - 0x21F */
+ struct sig_v1 hdrsig; /* 0x220 - 0x31F */
+ struct sig_v1 imgsig; /* 0x320 - 0x41F */
+ struct pubkey_der_v1 csk[16]; /* 0x420 - 0x24DF */
+ struct sig_v1 csksig; /* 0x24E0 - 0x25DF */
+ uint8_t next; /* 0x25E0 */
+ uint8_t reserved4; /* 0x25E1 */
+ uint16_t reserved5; /* 0x25E2 - 0x25E3 */
+} __packed;
+
+/*
+ * Structure of register set
+ */
+struct register_set_hdr_v1 {
+ uint8_t headertype; /* 0x0 */
+ uint8_t headersz_msb; /* 0x1 */
+ uint16_t headersz_lsb; /* 0x2 - 0x3 */
+ union {
+ struct {
+ uint32_t address; /* 0x4+8*N - 0x7+8*N */
+ uint32_t value; /* 0x8+8*N - 0xB+8*N */
+ } __packed entry;
+ struct {
+ uint8_t next; /* 0xC+8*N */
+ uint8_t delay; /* 0xD+8*N */
+ uint16_t reserved; /* 0xE+8*N - 0xF+8*N */
+ } __packed last_entry;
+ } data[];
+} __packed;
+
+/*
+ * Value 0 in register_set_hdr_v1 delay field is special.
+ * Instead of delay it setup SDRAM Controller.
+ */
+#define REGISTER_SET_HDR_OPT_DELAY_SDRAM_SETUP 0
+#define REGISTER_SET_HDR_OPT_DELAY_MS(val) ((val) ?: 1)
+
+/*
+ * Various values for the opt_hdr_v1->headertype field, describing the
+ * different types of optional headers. The "secure" header contains
+ * informations related to secure boot (encryption keys, etc.). The
+ * "binary" header contains ARM binary code to be executed prior to
+ * executing the main payload (usually the bootloader). This is
+ * typically used to execute DDR3 training code. The "register" header
+ * allows to describe a set of (address, value) tuples that are
+ * generally used to configure the DRAM controller.
+ */
+#define OPT_HDR_V1_SECURE_TYPE 0x1
+#define OPT_HDR_V1_BINARY_TYPE 0x2
+#define OPT_HDR_V1_REGISTER_TYPE 0x3