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southbridge/amd: Add LPC bridge acpi path for Family14 and SB800 

Adds the necessary plumbing for acpi_device_path() to find the LPC
bridge on the AMD Family14 northbridge with an SB800 southbridge.
This is necessary for TPM support since the acpi path to the LPC bridge
(_SB.PCI0.ISAB) doesn't match the built-in default in tpm.c
(_SB.PCI0.LPCB).

Change-Id: I1ba5865d3531d8a4f41399802d58aacdf95fc604
Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de>
Reviewed-on: https://review.coreboot.org/18402
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins)
This commit is contained in:
Tobias Diedrich 2017-02-20 02:46:19 +01:00 committed by Duncan Laurie
parent c248044b20
commit d8a2c1fb17
2 changed files with 25 additions and 0 deletions
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9
src/northbridge/amd/agesa/family14/northbridge.c
View File

@ -638,6 +638,14 @@ static void domain_enable_resources(device_t dev)
printk(BIOS_DEBUG, " ader - leaving domain_enable_resources.\n");
}
static const char *domain_acpi_name(struct device *dev)
{
if (dev->path.type == DEVICE_PATH_DOMAIN)
return "PCI0";
return NULL;
}
/* Bus related code */
static void cpu_bus_scan(struct device *dev)
@ -813,6 +821,7 @@ static struct device_operations pci_domain_ops = {
.enable_resources = domain_enable_resources,
.init = DEVICE_NOOP,
.scan_bus = pci_domain_scan_bus,
.acpi_name = domain_acpi_name,
};
static struct device_operations cpu_bus_ops = {

16
src/southbridge/amd/cimx/sb800/late.c
View File

@ -34,6 +34,7 @@
#include "sb_cimx.h" /* AMD CIMX wrapper entries */
#include "smbus.h"
#include "fan.h"
#include "pci_devs.h"
#include <southbridge/amd/common/amd_pci_util.h>
/*implement in mainboard.c*/
@ -150,6 +151,20 @@ unsigned long acpi_fill_mcfg(unsigned long current)
return current;
}
static const char *lpc_acpi_name(struct device *dev)
{
if (dev->path.type != DEVICE_PATH_PCI)
return NULL;
switch (dev->path.pci.devfn) {
/* DSDT: acpi/lpc.asl */
case LPC_DEVFN:
return "LIBR";
}
return NULL;
}
static struct device_operations lpc_ops = {
.read_resources = lpc_read_resources,
.set_resources = lpc_set_resources,
@ -160,6 +175,7 @@ static struct device_operations lpc_ops = {
.init = lpc_init,
.scan_bus = scan_lpc_bus,
.ops_pci = &lops_pci,
.acpi_name = lpc_acpi_name,
};
static const struct pci_driver lpc_driver __pci_driver = {