diff options
| author | Werner Zeh <werner.zeh@siemens.com> | 2017-06-28 12:56:31 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-06-29 14:42:05 +0000 |
| commit | 96b89ae5eba88227f31eaec72351e46d3de9ee9a (patch) | |
| tree | 3b0dce0518f23b5ec17801a889fb28839138dc29 /src/mainboard/siemens/mc_bdx1 | |
| parent | 7c789702149a893d0c82c57edbb8705e9f6f95e9 (diff) | |
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>
Diffstat (limited to 'src/mainboard/siemens/mc_bdx1')
| -rw-r--r-- | src/mainboard/siemens/mc_bdx1/mainboard.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_bdx1/mainboard.c b/src/mainboard/siemens/mc_bdx1/mainboard.c index fe35fe1c14..c20778d1f1 100644 --- a/src/mainboard/siemens/mc_bdx1/mainboard.c +++ b/src/mainboard/siemens/mc_bdx1/mainboard.c @@ -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. |