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mb/siemens/mc_bdx1: Set bus master bit for on-board PCI devices 

There are up to two on-board PCI devices where bus master has to be
enabled in PCI config space. As there is no need for a complete PCI
driver for these devices just set the bus master bit in
mainboard_final().

In a perfect world that would be the task of the runtime driver which
unfortunately don't do that.

Change-Id: Ic2896d5e7568a455737af26b14b2c398caae5f72
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/20403
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Werner Zeh 2017-06-28 12:56:31 +02:00 committed by Martin Roth
parent 7c78970214
commit 96b89ae5eb
1 changed files with 15 additions and 0 deletions
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15
src/mainboard/siemens/mc_bdx1/mainboard.c
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@ -20,6 +20,7 @@
#include <device/device.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include <console/console.h>
#if CONFIG_VGA_ROM_RUN
#include <x86emu/x86emu.h>
@ -125,6 +126,20 @@ static void mainboard_final(void *chip_info)
write16((spi_base + SPI_REG_OPTYPE), SPI_OPTYPE);
write32((spi_base + SPI_REG_OPMENU_L), SPI_OPMENU_LOWER);
write32((spi_base + SPI_REG_OPMENU_H), SPI_OPMENU_UPPER);
/* Set Master Enable for on-board PCI devices. */
dev = dev_find_device(PCI_VENDOR_ID_SIEMENS, 0x403e, 0);
if (dev) {
uint16_t cmd = pci_read_config16(dev, PCI_COMMAND);
cmd |= PCI_COMMAND_MASTER;
pci_write_config16(dev, PCI_COMMAND, cmd);
}
dev = dev_find_device(PCI_VENDOR_ID_SIEMENS, 0x403f, 0);
if (dev) {
uint16_t cmd = pci_read_config16(dev, PCI_COMMAND);
cmd |= PCI_COMMAND_MASTER;
pci_write_config16(dev, PCI_COMMAND, cmd);
}
}
/** \brief This function can decide if a given MAC address is valid or not.