txp_boot_record
struct txp_boot_record *br = sc->sc_boot;
struct txp_boot_record *boot;
if (txp_dma_malloc(sc, sizeof(struct txp_boot_record), &sc->sc_boot_dma,
boot = (struct txp_boot_record *)sc->sc_boot_dma.dma_vaddr;
struct txp_boot_record *sc_boot;