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Allow the FACS and XFACS to be zero in acpidump.

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These are allowed to be zero when the hardware reduced APCI flag is set

Sponsored by:	Innovate UK
Differential Revision:	https://reviews.freebsd.org/D23207
This commit is contained in:
Andrew Turner 2020-05-18 15:05:59 +00:00
parent e90337e48f
commit bc71118183
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=361216
1 changed files with 11 additions and 5 deletions
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16
usr.sbin/acpi/acpidump/acpi.c
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@ -245,6 +245,7 @@ acpi_handle_fadt(ACPI_TABLE_HEADER *sdp)
ACPI_TABLE_HEADER *dsdp;
ACPI_TABLE_FACS *facs;
ACPI_TABLE_FADT *fadt;
vm_offset_t addr;
int fadt_revision;
fadt = (ACPI_TABLE_FADT *)sdp;
@ -252,12 +253,17 @@ acpi_handle_fadt(ACPI_TABLE_HEADER *sdp)
fadt_revision = acpi_get_fadt_revision(fadt);
if (fadt_revision == 1)
facs = (ACPI_TABLE_FACS *)acpi_map_sdt(fadt->Facs);
addr = fadt->Facs;
else
facs = (ACPI_TABLE_FACS *)acpi_map_sdt(fadt->XFacs);
if (memcmp(facs->Signature, ACPI_SIG_FACS, 4) != 0 || facs->Length < 64)
errx(1, "FACS is corrupt");
acpi_print_facs(facs);
addr = fadt->XFacs;
if (addr != 0) {
facs = (ACPI_TABLE_FACS *)acpi_map_sdt(addr);
if (memcmp(facs->Signature, ACPI_SIG_FACS, 4) != 0 ||
facs->Length < 64)
errx(1, "FACS is corrupt");
acpi_print_facs(facs);
}
if (fadt_revision == 1)
dsdp = (ACPI_TABLE_HEADER *)acpi_map_sdt(fadt->Dsdt);