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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>
This commit is contained in:
Mario Scheithauer 2018-11-28 09:13:28 +01:00 committed by Patrick Georgi
parent 36a4a9d414
commit a94a153477
1 changed files with 10 additions and 0 deletions
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10
src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c
View File

@ -15,6 +15,7 @@
#include <bootstate.h> #include <bootstate.h>
#include <console/console.h> #include <console/console.h>
#include <device/pci_def.h>
#include <device/pci_ids.h> #include <device/pci_ids.h>
#include <device/pci_ops.h> #include <device/pci_ops.h>
#include <gpio.h> #include <gpio.h>
@ -33,6 +34,7 @@ void variant_mainboard_final(void)
{ {
int status; int status;
struct device *dev = NULL; struct device *dev = NULL;
uint16_t cmd;
/* /*
* Set up the DP2LVDS converter. * Set up the DP2LVDS converter.
@ -73,6 +75,14 @@ void variant_mainboard_final(void)
* The value 0x4a sets the swing level to 0.58 V. * The value 0x4a sets the swing level to 0.58 V.
*/ */
pcr_rmw32(PID_MODPHY, TX_DWORD3, (0x00 << 16), (0x4a << 16)); 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) static void wait_for_legacy_dev(void *unused)