GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

siemens/mc_apl3: 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: I1ef4a7774d4ca75c230063debbc63d03486fed6f
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/29528
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
This commit is contained in:
Mario Scheithauer 2018-11-07 08:50:45 +01:00 committed by Werner Zeh
parent bcbcecd38f
commit d985cdc763
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/mainboard/siemens/mc_apl1/variants/mc_apl3/mainboard.c
View File

@ -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>
@ -31,6 +32,7 @@
void variant_mainboard_final(void)
{
struct device *dev = NULL;
uint16_t cmd = 0;
/* PIR6 register mapping for PCIe root ports
* INTA#->PIRQD#, INTB#->PIRQA#, INTC#->PIRQB#, INTD#-> PIRQC#
@ -52,6 +54,14 @@ void variant_mainboard_final(void)
* offset 0x341C bit [3:0].
*/
pcr_or32(PID_LPC, PCR_LPC_PRC, (PCR_LPC_CCE_EN | PCR_LPC_PCE_EN));
/* 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)