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authorNico Huber <nico.h@gmx.de>2019-10-12 15:16:33 +0200
committerPatrick Georgi <pgeorgi@google.com>2020-05-26 15:01:00 +0000
commit9ea70c02cd0e5e28f38136ebbb6dbad72ad177c7 (patch)
tree68af4367507ca483522d2013b64c3e2e83511b67 /src/soc/intel
parent95dcf29b2fcc9f7c02812d760ec0be492d5b7580 (diff)
downloadcoreboot-9ea70c02cd0e5e28f38136ebbb6dbad72ad177c7.tar.xz
intel/cannonlake: Implement PCIe RP devicetree update
Some existing devicetrees were manually adapted to anticipate root-port switching. Now, their PCI-device on/off settings should just reflect the `PcieRpEnable` state and configuration happens on the PCI function that was assigned at reset. Change-Id: I4d76f38c222b74053c6a2f80b492d4660ab4db6d Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36651 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Edward O'Callaghan <quasisec@chromium.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/soc/intel')
-rw-r--r--src/soc/intel/cannonlake/chip.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/chip.c b/src/soc/intel/cannonlake/chip.c
index 51678add67..ef85215623 100644
--- a/src/soc/intel/cannonlake/chip.c
+++ b/src/soc/intel/cannonlake/chip.c
@@ -7,6 +7,7 @@
#include <intelblocks/acpi.h>
#include <intelblocks/cfg.h>
#include <intelblocks/itss.h>
+#include <intelblocks/pcie_rp.h>
#include <intelblocks/xdci.h>
#include <romstage_handoff.h>
#include <soc/intel/common/vbt.h>
@@ -16,6 +17,19 @@
#include "chip.h"
+static const struct pcie_rp_group pch_lp_rp_groups[] = {
+ { .slot = PCH_DEV_SLOT_PCIE, .count = 8 },
+ { .slot = PCH_DEV_SLOT_PCIE_1, .count = 8 },
+ { 0 }
+};
+
+static const struct pcie_rp_group pch_h_rp_groups[] = {
+ { .slot = PCH_DEV_SLOT_PCIE, .count = 8 },
+ { .slot = PCH_DEV_SLOT_PCIE_1, .count = 8 },
+ { .slot = PCH_DEV_SLOT_PCIE_2, .count = 8 },
+ { 0 }
+};
+
#if CONFIG(HAVE_ACPI_TABLES)
const char *soc_acpi_name(const struct device *dev)
{
@@ -166,6 +180,12 @@ void soc_init_pre_device(void *chip_info)
cnl_configure_pads(NULL, 0);
soc_gpio_pm_configuration();
+
+ /* swap enabled PCI ports in device tree if needed */
+ if (CONFIG(SOC_INTEL_CANNONLAKE_PCH_H))
+ pcie_rp_update_devicetree(pch_h_rp_groups);
+ else
+ pcie_rp_update_devicetree(pch_lp_rp_groups);
}
static struct device_operations pci_domain_ops = {