From c09840020b55709f6f4e4857f6bad2fb0ff300d2 Mon Sep 17 00:00:00 2001 From: Kevin Cody-Little Date: Wed, 9 May 2018 14:25:44 -0400 Subject: agesa/hudson/southbridge: add acpi name reporting for lpc Add an lpc_acpi_name function to report its namespace as "LIBR" rather than some fallback value which seems to vary. This repair is required for the LPC TPM device to register its presence without blowing up the table and preventing the payload from seeing the SATA device. Before change (but after other similar change to PCI0), the TPM device reported itself as: \_SB.PCI0.LPC0.TPM After change, the TPM device reports as: \_SB.PCI0.LIBR.TPM which is consistent with the tables AGESA generates. Change-Id: Ifa3a0e386cc00062855331e5f9d1c00d6541c238 Signed-off-by: Kevin Cody-Little Reviewed-on: https://review.coreboot.org/26205 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Nico Huber --- src/southbridge/amd/agesa/hudson/lpc.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'src') diff --git a/src/southbridge/amd/agesa/hudson/lpc.c b/src/southbridge/amd/agesa/hudson/lpc.c index 11660548e3..7ada832339 100644 --- a/src/southbridge/amd/agesa/hudson/lpc.c +++ b/src/southbridge/amd/agesa/hudson/lpc.c @@ -29,6 +29,7 @@ #include #include #include "hudson.h" +#include "pci_devs.h" static void lpc_init(device_t dev) { @@ -318,6 +319,17 @@ static void hudson_lpc_enable_resources(device_t dev) hudson_lpc_enable_childrens_resources(dev); } +static const char *lpc_acpi_name(const struct device *dev) +{ + if (dev->path.type != DEVICE_PATH_PCI) + return NULL; + + if (dev->path.pci.devfn == LPC_DEVFN) + return "LIBR"; + + return NULL; +} + unsigned long acpi_fill_mcfg(unsigned long current) { /* Just a dummy */ @@ -338,6 +350,7 @@ 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 = { .ops = &lpc_ops, -- cgit v1.2.3