From d985cdc7638967889e586447fb58a9c14bf72c63 Mon Sep 17 00:00:00 2001 From: Mario Scheithauer Date: Wed, 7 Nov 2018 08:50:45 +0100 Subject: 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 Reviewed-on: https://review.coreboot.org/29528 Tested-by: build bot (Jenkins) Reviewed-by: Werner Zeh --- src/mainboard/siemens/mc_apl1/variants/mc_apl3/mainboard.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'src') diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl3/mainboard.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl3/mainboard.c index bfcf38ef5f..f41fe732f3 100644 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl3/mainboard.c +++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl3/mainboard.c @@ -15,6 +15,7 @@ #include #include +#include #include #include #include @@ -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) -- cgit v1.2.3