32 static void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt,  in acpi_write_rsdp()  argument
35 	memset(rsdp, 0, sizeof(struct acpi_rsdp));  in acpi_write_rsdp()
37 	memcpy(rsdp->signature, RSDP_SIG, 8);  in acpi_write_rsdp()
38 	memcpy(rsdp->oem_id, OEM_ID, 6);  in acpi_write_rsdp()
40 	rsdp->length = sizeof(struct acpi_rsdp);  in acpi_write_rsdp()
41 	rsdp->rsdt_address = (u32)rsdt;  in acpi_write_rsdp()
51 		rsdp->revision = ACPI_RSDP_REV_ACPI_1_0;  in acpi_write_rsdp()
53 		rsdp->xsdt_address = (u64)(u32)xsdt;  in acpi_write_rsdp()
54 		rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;  in acpi_write_rsdp()
58 	rsdp->checksum = table_compute_checksum((void *)rsdp, 20);  in acpi_write_rsdp()
59 	rsdp->ext_checksum = table_compute_checksum((void *)rsdp,  in acpi_write_rsdp()
108 static void acpi_add_table(struct acpi_rsdp *rsdp, void *table)  in acpi_add_table()  argument
115 	rsdt = (struct acpi_rsdt *)rsdp->rsdt_address;  in acpi_add_table()
117 	if (rsdp->xsdt_address)  in acpi_add_table()
118 		xsdt = (struct acpi_xsdt *)((u32)rsdp->xsdt_address);  in acpi_add_table()
367 	struct acpi_rsdp *rsdp;  in write_acpi_tables()  local
385 	rsdp = (struct acpi_rsdp *)current;  in write_acpi_tables()
402 	acpi_write_rsdp(rsdp, rsdt, xsdt);  in write_acpi_tables()
447 	acpi_add_table(rsdp, fadt);  in write_acpi_tables()
453 	acpi_add_table(rsdp, madt);  in write_acpi_tables()
460 	acpi_add_table(rsdp, mcfg);  in write_acpi_tables()
465 	acpi_rsdp_addr = (unsigned long)rsdp;  in write_acpi_tables()
486 static struct acpi_rsdp *acpi_valid_rsdp(struct acpi_rsdp *rsdp)  in acpi_valid_rsdp()  argument
488 	if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0)  in acpi_valid_rsdp()
491 	debug("Looking on %p for valid checksum\n", rsdp);  in acpi_valid_rsdp()
493 	if (table_compute_checksum((void *)rsdp, 20) != 0)  in acpi_valid_rsdp()
497 	if ((rsdp->revision > 1) &&  in acpi_valid_rsdp()
498 	    (table_compute_checksum((void *)rsdp, rsdp->length) != 0))  in acpi_valid_rsdp()
502 	return rsdp;  in acpi_valid_rsdp()
508 	struct acpi_rsdp *rsdp = NULL;  in acpi_find_fadt()  local
515 		rsdp = acpi_valid_rsdp((struct acpi_rsdp *)p);  in acpi_find_fadt()
516 		if (rsdp)  in acpi_find_fadt()
520 	if (rsdp == NULL)  in acpi_find_fadt()
523 	debug("RSDP found at %p\n", rsdp);  in acpi_find_fadt()
524 	rsdt = (struct acpi_rsdt *)rsdp->rsdt_address;  in acpi_find_fadt()