From 4fef5a294b9024c54851756a813bffd65e7e1e32 Mon Sep 17 00:00:00 2001 From: Kane Chen Date: Wed, 27 Aug 2014 15:21:32 -0700 Subject: broadwell: Apply pcie updates from 2.1.0 ref code some clock gating and pcie settings are missed in original code BUG=chrome-os-partner:28234 BRANCH=None TEST=build and boot on samus verify registers between samus and crb Original-Change-Id: I931276adb2f2667c4f9e7611acfd709b7232d492 Original-Signed-off-by: Kane Chen Original-Reviewed-on: https://chromium-review.googlesource.com/214568 Original-Reviewed-by: Duncan Laurie (cherry picked from commit 57e42c781d435092a08238461f0605dbf092e576) Signed-off-by: Marc Jones Change-Id: Ia62a50f28a411bbd2ba51b94de17ca70051ea093 Reviewed-on: http://review.coreboot.org/8967 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/soc/intel/broadwell/pcie.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/src/soc/intel/broadwell/pcie.c b/src/soc/intel/broadwell/pcie.c index a251a17a89..bd5dc3c7a3 100644 --- a/src/soc/intel/broadwell/pcie.c +++ b/src/soc/intel/broadwell/pcie.c @@ -31,6 +31,7 @@ #include #include #include +#include static void pcie_update_cfg8(device_t dev, int reg, u8 mask, u8 or); static void pcie_update_cfg(device_t dev, int reg, u32 mask, u32 or); @@ -107,6 +108,7 @@ static void root_port_init_config(device_t dev) rpc.new_rpfn = rpc.orig_rpfn; rpc.num_ports = NUM_ROOT_PORTS; rpc.gbe_port = -1; + pcie_update_cfg8(dev, 0xf5, 0xa, 0x5); rpc.pin_ownership = pci_read_config32(dev, 0x410); root_port_config_update_gbe_port(); @@ -176,6 +178,7 @@ static void pcie_enable_clock_gating(void) { int i; int enabled_ports = 0; + int is_broadwell = !!(cpu_family_model() == BROADWELL_FAMILY_ULT); for (i = 0; i < rpc.num_ports; i++) { device_t dev; @@ -216,9 +219,13 @@ static void pcie_enable_clock_gating(void) pcie_update_cfg8(dev, 0xe8, ~(3 << 2), (2 << 2)); /* Update PECR1 register. */ - pcie_update_cfg8(dev, 0xe8, ~0, 1); - pcie_update_cfg8(dev, 0x324, ~(1 << 5), (1 < 5)); - + pcie_update_cfg8(dev, 0xe8, ~0, 3); + if (is_broadwell) { + pcie_update_cfg(dev, 0x324, ~((1 << 5) | (1 << 14)), + ((1 << 5) | (1 << 14))); + } else { + pcie_update_cfg(dev, 0x324, ~(1 << 5), (1 << 5)); + } /* Per-Port CLKREQ# handling. */ if (gpio_is_native(18 + rp - 1)) pcie_update_cfg(dev, 0x420, ~0, (3 << 29)); @@ -455,9 +462,6 @@ static void pch_pcie_early(struct device *dev) /* Set unique clock exit latency in MPC register. */ pcie_update_cfg(dev, 0xd8, ~(0x7 << 18), (0x7 << 18)); - /* Set L1 exit latency in LCAP register. */ - pcie_update_cfg(dev, 0x4c, ~(0x7 << 15), (0x4 << 15)); - switch (rp) { case 1: pcie_add_0x0202000_iobp(0xe9002440); @@ -515,7 +519,7 @@ static void pch_pcie_early(struct device *dev) /* Set Invalid Receive Range Check Enable in MPC register. */ pcie_update_cfg(dev, 0xd8, ~0, (1 << 25)); - pcie_update_cfg8(dev, 0xf5, 0x3f, 0); + pcie_update_cfg8(dev, 0xf5, 0x0f, 0); if (rp == 1 || rp == 5 || rp == 6) pcie_update_cfg8(dev, 0xf7, ~0xc, 0); -- cgit v1.2.3