diff options
Diffstat (limited to 'src/mainboard/ocp/wedge100s/romstage.c')
| -rw-r--r-- | src/mainboard/ocp/wedge100s/romstage.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/mainboard/ocp/wedge100s/romstage.c b/src/mainboard/ocp/wedge100s/romstage.c index 9e294d978b..e14a09f5ef 100644 --- a/src/mainboard/ocp/wedge100s/romstage.c +++ b/src/mainboard/ocp/wedge100s/romstage.c @@ -20,6 +20,12 @@ #include <cpu/x86/msr.h> #include <cf9_reset.h> #include <console/console.h> +#include <soc/pci_devs.h> +#include <soc/lpc.h> +#include <superio/ite/common/ite.h> + +#define SUPERIO_DEV 0x6e +#define SERIAL_DEV PNP_DEV(SUPERIO_DEV, 1) /** * /brief mainboard call for setup that needs to be done before fsp init @@ -27,6 +33,14 @@ */ void early_mainboard_romstage_entry(void) { + /* Decode 0x6e/0x6f on LPC bus (actually 0x6c-0x6f) */ + pci_write_config32(PCI_DEV(0x0, LPC_DEV, LPC_FUNC), LPC_GEN1_DEC, + (0 << 16) | ALIGN_DOWN(SUPERIO_DEV, 4) | 1); + + if (IS_ENABLED(CONFIG_CONSOLE_SERIAL)) + ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE); + + /* * Sometimes the system boots in an invalid state, where random values * have been written to MSRs and then the MSRs are locked. @@ -60,5 +74,25 @@ void late_mainboard_romstage_entry(void) */ void romstage_fsp_rt_buffer_callback(FSP_INIT_RT_BUFFER *FspRtBuffer) { + UPD_DATA_REGION *fsp_upd_data = FspRtBuffer->Common.UpdDataRgnPtr; + if (IS_ENABLED(CONFIG_FSP_USES_UPD)) { + /* The internal UART operates on 0x3f8/0x2f8. + * As it's not wired up and conflicts with SuperIO decoding + * the same range, make sure to disable it. + */ + fsp_upd_data->SerialPortControllerInit0 = 0; + fsp_upd_data->SerialPortControllerInit1 = 0; + + /* coreboot will initialize UART. + * No need for FSP to do it again. + */ + fsp_upd_data->SerialPortConfigure = 0; + fsp_upd_data->SerialPortBaudRate = 0; + /* Make FSP use serial IO */ + if (IS_ENABLED(CONFIG_CONSOLE_SERIAL)) + fsp_upd_data->SerialPortType = 1; + else + fsp_upd_data->SerialPortType = 0; + } } |