diff options
| author | Hal Martin <hal.martin@gmail.com> | 2017-12-05 20:52:09 +0000 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-01-12 21:13:10 +0000 |
| commit | aba468b329f68976c6ac5c4a04b3b78b224f07df (patch) | |
| tree | 4d17a2dd89ad10cb3ebd9d126f3aef19a56fc573 /src/mainboard | |
| parent | ee8da1c3ae873a21767d82c88539b34fd9eff10b (diff) | |
mb/compulab/intense_pc: enable SuperIO UART
Enable the UART via SMSC SIO1007 SuperIO, this allows you to see boot
boot messages from coreboot over the integrated RS-232 port (requires
use of included dongle).
Change-Id: I11a4c532ed73a0cf27d6e7bef6e04035c3942567
Signed-off-by: Hal Martin <hal.martin@gmail.com>
Reviewed-on: https://review.coreboot.org/22737
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/compulab/intense_pc/Kconfig | 1 | ||||
| -rw-r--r-- | src/mainboard/compulab/intense_pc/romstage.c | 63 |
2 files changed, 56 insertions, 8 deletions
diff --git a/src/mainboard/compulab/intense_pc/Kconfig b/src/mainboard/compulab/intense_pc/Kconfig index 81085bc240..557b8ff721 100644 --- a/src/mainboard/compulab/intense_pc/Kconfig +++ b/src/mainboard/compulab/intense_pc/Kconfig @@ -14,6 +14,7 @@ config BOARD_SPECIFIC_OPTIONS select SOUTHBRIDGE_INTEL_C216 select SYSTEM_TYPE_LAPTOP select USE_NATIVE_RAMINIT + select SUPERIO_SMSC_SIO1007 config HAVE_IFD_BIN bool diff --git a/src/mainboard/compulab/intense_pc/romstage.c b/src/mainboard/compulab/intense_pc/romstage.c index 8ef3f3e829..4516ac22ba 100644 --- a/src/mainboard/compulab/intense_pc/romstage.c +++ b/src/mainboard/compulab/intense_pc/romstage.c @@ -17,21 +17,39 @@ #include <lib.h> #include <arch/io.h> #include "northbridge/intel/sandybridge/raminit_native.h" +#include <superio/smsc/sio1007/chip.h> + +#define SIO_PORT 0x164e void pch_enable_lpc(void) { - pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x3f0f); - pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x0000164d); - pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000c0681); - pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000406f1); - pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x000c06a1); - pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010); - pci_write_config32(PCI_DEV(0, 0x1f, 0), 0xac, 0x00010000); + device_t dev = PCH_LPC_DEV; + + /* Set COM1/COM2 decode range */ + pci_write_config16(dev, LPC_IO_DEC, 0x0010); + + /* Enable SuperIO */ + u16 lpc_config = CNF1_LPC_EN | CNF2_LPC_EN; + pci_write_config16(dev, LPC_EN, lpc_config); + + /* Map 1 byte to the LPC bus. */ + pci_write_config32(dev, LPC_GEN1_DEC, 0x00164d); + + /* Map a range for the runtime_port registers to the LPC bus. */ + pci_write_config32(dev, LPC_GEN2_DEC, 0xc0181); + +#if IS_ENABLED(CONFIG_DRIVERS_UART_8250IO) + /* Enable COM1 */ + if (sio1007_enable_uart_at(SIO_PORT)) { + pci_write_config16(dev, LPC_EN, + lpc_config | COMA_LPC_EN); + } +#endif } void rcba_config(void) { - /* Disable devices. */ + /* Disable devices. */ RCBA32(0x3414) = 0x00000000; RCBA32(0x3418) = 0x16e81fe3; @@ -59,6 +77,35 @@ void mainboard_early_init(int s3resume) void mainboard_config_superio(void) { + const u16 port = SIO_PORT; + const u16 runtime_port = 0x180; + + /* Turn on configuration mode. */ + outb(0x55, port); + + /* Set the GPIO direction, polarity, and type. */ + sio1007_setreg(port, 0x31, 1 << 0, 1 << 0); + sio1007_setreg(port, 0x32, 0 << 0, 1 << 0); + sio1007_setreg(port, 0x33, 0 << 0, 1 << 0); + + /* Set the base address for the runtime register block. */ + sio1007_setreg(port, 0x30, runtime_port >> 4, 0xff); + sio1007_setreg(port, 0x21, runtime_port >> 12, 0xff); + + /* Turn on address decoding for it. */ + sio1007_setreg(port, 0x3a, 1 << 1, 1 << 1); + + /* Set the value of GPIO 10 by changing GP1, bit 0. */ + u8 byte; + byte = inb(runtime_port + 0xc); + byte |= (1 << 0); + outb(byte, runtime_port + 0xc); + + /* Turn off address decoding for it. */ + sio1007_setreg(port, 0x3a, 0 << 1, 1 << 1); + + /* Turn off configuration mode. */ + outb(0xaa, port); } void mainboard_get_spd(spd_raw_data *spd, bool id_only) |