diff options
Diffstat (limited to 'payloads/libpayload/include')
-rw-r--r-- | payloads/libpayload/include/coreboot_tables.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h index 276f25fe89..d77242a3a8 100644 --- a/payloads/libpayload/include/coreboot_tables.h +++ b/payloads/libpayload/include/coreboot_tables.h @@ -121,6 +121,21 @@ struct cb_serial { u32 baseaddr; u32 baud; u32 regwidth; + + /* Crystal or input frequency to the chip containing the UART. + * Provide the board specific details to allow the payload to + * initialize the chip containing the UART and make independent + * decisions as to which dividers to select and their values + * to eventually arrive at the desired console baud-rate. */ + u32 input_hertz; + + /* UART PCI address: bus, device, function + * 1 << 31 - Valid bit, PCI UART in use + * Bus << 20 + * Device << 15 + * Function << 12 + */ + u32 uart_pci_addr; }; #define CB_TAG_CONSOLE 0x00010 |