diff options
Diffstat (limited to 'src/mainboard/gigabyte/ga-h77m-d3h/early_init.c')
-rw-r--r-- | src/mainboard/gigabyte/ga-h77m-d3h/early_init.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/mainboard/gigabyte/ga-h77m-d3h/early_init.c b/src/mainboard/gigabyte/ga-h77m-d3h/early_init.c new file mode 100644 index 0000000000..b9f7891c48 --- /dev/null +++ b/src/mainboard/gigabyte/ga-h77m-d3h/early_init.c @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <bootblock_common.h> +#include <superio/ite/common/ite.h> +#include <superio/ite/it8728f/it8728f.h> + +#define SUPERIO_BASE 0x2e +#define SIO_GPIO PNP_DEV(SUPERIO_BASE, IT8728F_GPIO) +#define SERIAL_DEV PNP_DEV(SUPERIO_BASE, 0x01) + +void bootblock_mainboard_early_init(void) +{ + /* Initialize SuperIO */ + ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE); + + ite_reg_write(SIO_GPIO, 0xEF, 0x7E); // magic SIO disable reboot + + /* FIXME: These values could be configured in ramstage */ + ite_reg_write(SIO_GPIO, 0x25, 0x40); // gpio pin function -> gp16 + ite_reg_write(SIO_GPIO, 0x27, 0x10); // gpio pin function -> gp34 + ite_reg_write(SIO_GPIO, 0x2c, 0x80); // smbus isolation on parallel port + ite_reg_write(SIO_GPIO, 0x62, 0x0a); // simple iobase 0xa00 + ite_reg_write(SIO_GPIO, 0x72, 0x20); // watchdog timeout clear! + ite_reg_write(SIO_GPIO, 0x73, 0x00); // watchdog timeout clear! + ite_reg_write(SIO_GPIO, 0xcb, 0x00); // simple io set4 direction -> in + ite_reg_write(SIO_GPIO, 0xe9, 0x27); // bus select disable + ite_reg_write(SIO_GPIO, 0xf0, 0x10); // ? + ite_reg_write(SIO_GPIO, 0xf1, 0x42); // ? + ite_reg_write(SIO_GPIO, 0xf6, 0x1c); // hwmon alert beep -> gp36(pin12) + + /* EC SIO settings */ + ite_reg_write(IT8728F_EC, 0xf1, 0xc0); + ite_reg_write(IT8728F_EC, 0xf6, 0xf0); + ite_reg_write(IT8728F_EC, 0xf9, 0x48); + ite_reg_write(IT8728F_EC, 0x60, 0x0a); + ite_reg_write(IT8728F_EC, 0x61, 0x30); + ite_reg_write(IT8728F_EC, 0x62, 0x0a); + ite_reg_write(IT8728F_EC, 0x63, 0x20); + ite_reg_write(IT8728F_EC, 0x30, 0x01); +} |