diff options
| author | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2020-05-13 17:00:33 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-05-20 09:49:00 +0000 |
| commit | 6d20d0c1400a07b8ca3d709693263dbc45ca564f (patch) | |
| tree | e3940009f00f31d947ca0c12681effa5d911b8dd /src/soc/intel/tigerlake/chip.c | |
| parent | dbcf7b16219df0c04401b8fcd6a780174a7df305 (diff) | |
soc/intel/tigerlake: Move PMC PCI resources under PMC device
Historically in coreboot, the PMC's fixed PCI resources were described
by the System Agent (the MMIO resource), and eSPI/LPC (the I/O
resource). This patch moves both of those to a new Intel SoC-specific
function, soc_pmc_read_resources(). On TGL, this new function takes care
of providing the MMIO and I/O resources for the PMC.
BUG=b:156388055
TEST=verified on volteer that the resource allocator is aware of and
does not touch these two resources:
("PCI: 00:1f.2 resource base fe000000 size 10000 align 0 gran 0 limit 0
flags f0000200 index 0
PCI: 00:1f.2 resource base 1800 size 100 align 0 gran 0 limit 18ff
flags c0000100 index 1")
Also verify that the MEM resource is described in the coreboot table:
("BIOS-e820: [mem 0x00000000fe000000-0x00000000fe00ffff] reserved")
Verified the memory range is also untouchable from Linux:
("system 00:00: [mem 0xfe000000-0xffffffff] could not be reserved")
Change-Id: Ia7c6ae849aefaf549fb682416a87320907fb3fe3
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41385
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/tigerlake/chip.c')
| -rw-r--r-- | src/soc/intel/tigerlake/chip.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/soc/intel/tigerlake/chip.c b/src/soc/intel/tigerlake/chip.c index c1764cde93..a923074acc 100644 --- a/src/soc/intel/tigerlake/chip.c +++ b/src/soc/intel/tigerlake/chip.c @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +#include <console/console.h> #include <device/device.h> #include <device/pci.h> #include <fsp/api.h> @@ -151,11 +152,17 @@ static struct device_operations cpu_bus_ops = { static void soc_enable(struct device *dev) { - /* Set the operations if it is a special bus type */ + /* + * Set the operations if it is a special bus type or a hidden PCI + * device. + */ if (dev->path.type == DEVICE_PATH_DOMAIN) dev->ops = &pci_domain_ops; else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) dev->ops = &cpu_bus_ops; + else if (dev->path.type == DEVICE_PATH_PCI && + dev->path.pci.devfn == PCH_DEVFN_PMC) + dev->ops = &pmc_ops; } struct chip_operations soc_intel_tigerlake_ops = { |