siemens/mc_apl5: Set bus master bit for on-board PCI device
There is an on-board PCI device where bus master has to be enabled in
PCI configuration space. As there is no need for a complete PCI driver
for this device just set the bus master bit in mainboard_final().
Change-Id: I4ab40e34253c20adaacfdf42050314e06547eefb
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/c/29881
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c
index 6d22fd9..06b2a2f 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c
@@ -15,6 +15,7 @@
#include <bootstate.h>
#include <console/console.h>
+#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <gpio.h>
@@ -33,6 +34,7 @@
{
int status;
struct device *dev = NULL;
+ uint16_t cmd;
/*
* Set up the DP2LVDS converter.
@@ -73,6 +75,14 @@
* The value 0x4a sets the swing level to 0.58 V.
*/
pcr_rmw32(PID_MODPHY, TX_DWORD3, (0x00 << 16), (0x4a << 16));
+
+ /* Set Master Enable for on-board PCI device. */
+ dev = dev_find_device(PCI_VENDOR_ID_SIEMENS, 0x403e, 0);
+ if (dev) {
+ cmd = pci_read_config16(dev, PCI_COMMAND);
+ cmd |= PCI_COMMAND_MASTER;
+ pci_write_config16(dev, PCI_COMMAND, cmd);
+ }
}
static void wait_for_legacy_dev(void *unused)