-static void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt,
- struct acpi_xsdt *xsdt)
-{
- memset(rsdp, 0, sizeof(struct acpi_rsdp));
-
- memcpy(rsdp->signature, RSDP_SIG, 8);
- memcpy(rsdp->oem_id, OEM_ID, 6);
-
- rsdp->length = sizeof(struct acpi_rsdp);
- rsdp->rsdt_address = (u32)rsdt;
-
- /*
- * Revision: ACPI 1.0: 0, ACPI 2.0/3.0/4.0: 2
- *
- * Some OSes expect an XSDT to be present for RSD PTR revisions >= 2.
- * If we don't have an ACPI XSDT, force ACPI 1.0 (and thus RSD PTR
- * revision 0)
- */
- if (xsdt == NULL) {
- rsdp->revision = ACPI_RSDP_REV_ACPI_1_0;
- } else {
- rsdp->xsdt_address = (u64)(u32)xsdt;
- rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;
- }
-
- /* Calculate checksums */
- rsdp->checksum = table_compute_checksum((void *)rsdp, 20);
- rsdp->ext_checksum = table_compute_checksum((void *)rsdp,
- sizeof(struct acpi_rsdp));
-}
-
-void acpi_fill_header(struct acpi_table_header *header, char *signature)
-{
- memcpy(header->signature, signature, 4);
- memcpy(header->oem_id, OEM_ID, 6);
- memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
- header->oem_revision = U_BOOT_BUILD_DATE;
- memcpy(header->aslc_id, ASLC_ID, 4);
-}
-
-static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
-{
- struct acpi_table_header *header = &(rsdt->header);
-
- /* Fill out header fields */
- acpi_fill_header(header, "RSDT");
- header->length = sizeof(struct acpi_rsdt);
- header->revision = 1;
-
- /* Entries are filled in later, we come with an empty set */
-
- /* Fix checksum */
- header->checksum = table_compute_checksum((void *)rsdt,
- sizeof(struct acpi_rsdt));
-}
-
-static void acpi_write_xsdt(struct acpi_xsdt *xsdt)
-{
- struct acpi_table_header *header = &(xsdt->header);
-
- /* Fill out header fields */
- acpi_fill_header(header, "XSDT");
- header->length = sizeof(struct acpi_xsdt);
- header->revision = 1;
-
- /* Entries are filled in later, we come with an empty set */
-
- /* Fix checksum */
- header->checksum = table_compute_checksum((void *)xsdt,
- sizeof(struct acpi_xsdt));
-}
-
-/**
- * Add an ACPI table to the RSDT (and XSDT) structure, recalculate length
- * and checksum.
- */
-static void acpi_add_table(struct acpi_rsdp *rsdp, void *table)
-{
- int i, entries_num;
- struct acpi_rsdt *rsdt;
- struct acpi_xsdt *xsdt;
-
- /* The RSDT is mandatory while the XSDT is not */
- rsdt = (struct acpi_rsdt *)rsdp->rsdt_address;
-
- /* This should always be MAX_ACPI_TABLES */
- entries_num = ARRAY_SIZE(rsdt->entry);
-
- for (i = 0; i < entries_num; i++) {
- if (rsdt->entry[i] == 0)
- break;
- }
-
- if (i >= entries_num) {
- debug("ACPI: Error: too many tables\n");
- return;
- }
-
- /* Add table to the RSDT */
- rsdt->entry[i] = (u32)table;
-
- /* Fix RSDT length or the kernel will assume invalid entries */
- rsdt->header.length = sizeof(struct acpi_table_header) +
- sizeof(u32) * (i + 1);
-
- /* Re-calculate checksum */
- rsdt->header.checksum = 0;
- rsdt->header.checksum = table_compute_checksum((u8 *)rsdt,
- rsdt->header.length);
-
- /* The RSDT is mandatory while the XSDT is not */
- if (!rsdp->xsdt_address)
- return;
-
- /*
- * And now the same thing for the XSDT. We use the same index as for
- * now we want the XSDT and RSDT to always be in sync in U-Boot
- */
- xsdt = (struct acpi_xsdt *)((u32)rsdp->xsdt_address);
-
- /* Add table to the XSDT */
- xsdt->entry[i] = (u64)(u32)table;
-
- /* Fix XSDT length */
- xsdt->header.length = sizeof(struct acpi_table_header) +
- sizeof(u64) * (i + 1);
-
- /* Re-calculate checksum */
- xsdt->header.checksum = 0;
- xsdt->header.checksum = table_compute_checksum((u8 *)xsdt,
- xsdt->header.length);
-}
-