TXP_H2A_2
WRITE_REG(sc, TXP_H2A_2, BUS_ADDR_HI32(sc->sc_boot_dma.dma_paddr));
WRITE_REG(sc, TXP_H2A_2, TXP_BOOTCMD_NULL);
WRITE_REG(sc, TXP_H2A_2, sc->sc_cmdring.lastwrite);
WRITE_REG(sc, TXP_H2A_2, le32toh(fileheader->hmac[0]));
WRITE_REG(sc, TXP_H2A_2, le32toh(sect->cksum));