diff options
Diffstat (limited to 'usr/src/cmd/acpi')
| -rw-r--r-- | usr/src/cmd/acpi/acpidump/Makefile | 2 | ||||
| -rw-r--r-- | usr/src/cmd/acpi/acpidump/osillumostbl.c | 41 |
2 files changed, 39 insertions, 4 deletions
diff --git a/usr/src/cmd/acpi/acpidump/Makefile b/usr/src/cmd/acpi/acpidump/Makefile index 35a352d851..5c9b24ccbe 100644 --- a/usr/src/cmd/acpi/acpidump/Makefile +++ b/usr/src/cmd/acpi/acpidump/Makefile @@ -25,6 +25,8 @@ CERRWARN += -_gcc=-Wno-unused-function CPPFLAGS += -I$(SRC)/uts/intel/sys/acpi -DACPI_DUMP_APP +LDLIBS += -ldevinfo + .KEEP_STATE: all: $(PROG) diff --git a/usr/src/cmd/acpi/acpidump/osillumostbl.c b/usr/src/cmd/acpi/acpidump/osillumostbl.c index bd4d500ba3..12bf145f7e 100644 --- a/usr/src/cmd/acpi/acpidump/osillumostbl.c +++ b/usr/src/cmd/acpi/acpidump/osillumostbl.c @@ -50,6 +50,7 @@ #include <string.h> #include <stdlib.h> #include <unistd.h> +#include <libdevinfo.h> #include "acpidump.h" #define _COMPONENT ACPI_OS_SERVICES @@ -359,16 +360,48 @@ AcpiOsGetTableByIndex(UINT32 Index, ACPI_TABLE_HEADER **Table, * DESCRIPTION: Scan and load RSDP. * See the find_rsdp() function in usr/src/uts/i86pc/os/fakebop.c, which is how * the kernel finds the RSDP. That algorithm matches AcpiFindRootPointer(). - * The code here is derived from AcpiFindRootPointer, except that we will try - * the BIOS if the EBDA fails, and we will copy the table if found. + * + * If the system is not using BIOS, and ACPI information was passed to the + * system from the boot loader, then the RSDP is recorded in the "acpi-root-tab" + * property. + * + * The code here is derived from AcpiFindRootPointer, except that we will + * try the "acpi-root-tab" property first. If the property does not exist or + * we do not find the root, then we scan the EBDA. Finally, we will search + * the BIOS and copy the table if found. */ static ACPI_STATUS OslLoadRsdp(void) { - UINT8 *mapp; + UINT8 *mapp = NULL; ACPI_TABLE_HEADER *tblp; - ACPI_SIZE mapsize; + ACPI_SIZE mapsize = sizeof (ACPI_TABLE_RSDP); ACPI_PHYSICAL_ADDRESS physaddr; + di_node_t root; + int64_t *val64; + + if ((root = di_init("/", DINFOPROP)) != DI_NODE_NIL) { + if (di_prop_lookup_int64(DDI_DEV_T_ANY, root, + "acpi-root-tab", &val64) == 1) { + physaddr = (ACPI_PHYSICAL_ADDRESS)*val64; + mapp = AcpiOsMapMemory(physaddr, mapsize); + } + di_fini(root); + } + + if (mapp != NULL) { + tblp = ACPI_CAST_PTR(ACPI_TABLE_HEADER, + AcpiTbScanMemoryForRsdp(mapp, mapsize)); + if (tblp != NULL) { + physaddr += (ACPI_PHYSICAL_ADDRESS) + ACPI_PTR_DIFF(tblp, mapp); + Gbl_RsdpAddress = physaddr; + memcpy(&Gbl_Rsdp, tblp, sizeof (ACPI_TABLE_RSDP)); + AcpiOsUnmapMemory(mapp, mapsize); + return (AE_OK); + } + AcpiOsUnmapMemory(mapp, mapsize); + } /* 1a) Get the location of the Extended BIOS Data Area (EBDA) */ mapp = AcpiOsMapMemory((ACPI_PHYSICAL_ADDRESS)ACPI_EBDA_PTR_LOCATION, |