diff options
Diffstat (limited to 'src/arch/x86/acpi.c')
| -rw-r--r-- | src/arch/x86/acpi.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c index c540b5ce4c..ccaab9ef74 100644 --- a/src/arch/x86/acpi.c +++ b/src/arch/x86/acpi.c @@ -6,6 +6,7 @@ * * Copyright (C) 2004 SUSE LINUX AG * Copyright (C) 2005-2009 coresystems GmbH + * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering * * ACPI FADT, FACS, and DSDT table support added by * Nick Barker <nick.barker9@btinternet.com>, and those portions @@ -531,6 +532,30 @@ void acpi_create_hpet(acpi_hpet_t *hpet) header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t)); } +void acpi_create_ivrs(acpi_ivrs_t *ivrs, + unsigned long (*acpi_fill_ivrs)(acpi_ivrs_t* ivrs_struct, unsigned long current)) +{ + acpi_header_t *header = &(ivrs->header); + unsigned long current = (unsigned long)ivrs + sizeof(acpi_ivrs_t); + + memset((void *)ivrs, 0, sizeof(acpi_ivrs_t)); + + /* Fill out header fields. */ + memcpy(header->signature, "IVRS", 4); + memcpy(header->oem_id, OEM_ID, 6); + memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); + memcpy(header->asl_compiler_id, ASLC, 4); + + header->length = sizeof(acpi_ivrs_t); + header->revision = 1; /* ACPI 1.0: N/A, ACPI 2.0/3.0/4.0: 1 */ + + current = acpi_fill_ivrs(ivrs, current); + + /* (Re)calculate length and checksum. */ + header->length = current - (unsigned long)ivrs; + header->checksum = acpi_checksum((void *)ivrs, header->length); +} + unsigned long acpi_write_hpet(device_t device, unsigned long current, acpi_rsdp_t *rsdp) { acpi_hpet_t *hpet; |