summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
authorKane Chen <kane.chen@intel.com>2014-08-27 15:21:32 -0700
committerMarc Jones <marc.jones@se-eng.com>2015-03-27 06:30:04 +0100
commit4fef5a294b9024c54851756a813bffd65e7e1e32 (patch)
treed7b9799188c36b355fdb0fc56f3b0a1ab0fefa63 /src
parenta7d8ea84c63e9c8103a6a8bc45b3aa92658a028f (diff)
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 <kane.chen@intel.com> Original-Reviewed-on: https://chromium-review.googlesource.com/214568 Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org> (cherry picked from commit 57e42c781d435092a08238461f0605dbf092e576) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: Ia62a50f28a411bbd2ba51b94de17ca70051ea093 Reviewed-on: http://review.coreboot.org/8967 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src')
-rw-r--r--src/soc/intel/broadwell/pcie.c18
1 files 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 <broadwell/pci_devs.h>
#include <broadwell/rcba.h>
#include <chip.h>
+#include <broadwell/cpu.h>
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);