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authorHal Martin <hal.martin@gmail.com>2017-12-05 20:52:09 +0000
committerMartin Roth <martinroth@google.com>2018-01-12 21:13:10 +0000
commitaba468b329f68976c6ac5c4a04b3b78b224f07df (patch)
tree4d17a2dd89ad10cb3ebd9d126f3aef19a56fc573 /src/mainboard/compulab
parentee8da1c3ae873a21767d82c88539b34fd9eff10b (diff)
downloadcoreboot-aba468b329f68976c6ac5c4a04b3b78b224f07df.tar.xz
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/compulab')
-rw-r--r--src/mainboard/compulab/intense_pc/Kconfig1
-rw-r--r--src/mainboard/compulab/intense_pc/romstage.c63
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)