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authorFurquan Shaikh <furquan@google.com>2018-03-14 21:43:04 -0700
committerFurquan Shaikh <furquan@google.com>2018-03-16 04:43:11 +0000
commit2cfc862a3e4769ea94c23a109f1ca82dfbc47f1b (patch)
treecc1242708b364e86b52cfd1a2b88dd548159d019
parent6d5e10c05d99c475e63bbe95012066f9c585cfb3 (diff)
downloadcoreboot-2cfc862a3e4769ea94c23a109f1ca82dfbc47f1b.tar.xz
soc/intel/apollolake: Add config option for enabling hotplug
PcieRpHotPlug in apollolake UPD is default enabled. This change adds a config option to enable hotplug only if explicitly requested by mainboard. This changes the default behavior on all apollolake boards to have hotplug disabled. BUG=b:74633273 BRANCH=reef,coral Change-Id: I572c054d31aaf5d43a79c4b1773ec9356da48d9d Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/25187 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
-rw-r--r--src/soc/intel/apollolake/chip.c3
-rw-r--r--src/soc/intel/apollolake/chip.h3
2 files changed, 6 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c
index 60067735ce..af145c0259 100644
--- a/src/soc/intel/apollolake/chip.c
+++ b/src/soc/intel/apollolake/chip.c
@@ -534,6 +534,9 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *silupd)
memcpy(silconfig->PcieRpClkReqNumber, cfg->pcie_rp_clkreq_pin,
sizeof(silconfig->PcieRpClkReqNumber));
+ memcpy(silconfig->PcieRpHotPlug, cfg->pcie_rp_hotplug_enable,
+ sizeof(silconfig->PcieRpHotPlug));
+
if (cfg->emmc_tx_cmd_cntl != 0)
silconfig->EmmcTxCmdCntl = cfg->emmc_tx_cmd_cntl;
if (cfg->emmc_tx_data_cntl1 != 0)
diff --git a/src/soc/intel/apollolake/chip.h b/src/soc/intel/apollolake/chip.h
index 7a1d16a1ad..fe845ab06c 100644
--- a/src/soc/intel/apollolake/chip.h
+++ b/src/soc/intel/apollolake/chip.h
@@ -46,6 +46,9 @@ struct soc_intel_apollolake_config {
*/
uint8_t pcie_rp_clkreq_pin[MAX_PCIE_PORTS];
+ /* Enable/disable hot-plug for root ports (0 = disable, 1 = enable). */
+ uint8_t pcie_rp_hotplug_enable[MAX_PCIE_PORTS];
+
/* [14:8] DDR mode Number of dealy elements.Each = 125pSec.
* [6:0] SDR mode Number of dealy elements.Each = 125pSec.
*/