diff options
| author | Kane Chen <kane.chen@intel.com> | 2014-08-27 15:21:32 -0700 |
|---|---|---|
| committer | Marc Jones <marc.jones@se-eng.com> | 2015-03-27 06:30:04 +0100 |
| commit | 4fef5a294b9024c54851756a813bffd65e7e1e32 (patch) | |
| tree | d7b9799188c36b355fdb0fc56f3b0a1ab0fefa63 /src/soc/intel/broadwell/pcie.c | |
| parent | a7d8ea84c63e9c8103a6a8bc45b3aa92658a028f (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/soc/intel/broadwell/pcie.c')
| -rw-r--r-- | src/soc/intel/broadwell/pcie.c | 18 |
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); |