diff options
Diffstat (limited to 'src/mainboard/asus/a88xm-e/bootblock.c')
-rw-r--r-- | src/mainboard/asus/a88xm-e/bootblock.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/mainboard/asus/a88xm-e/bootblock.c b/src/mainboard/asus/a88xm-e/bootblock.c new file mode 100644 index 0000000000..0bc8d2e15e --- /dev/null +++ b/src/mainboard/asus/a88xm-e/bootblock.c @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <amdblocks/acpimmio.h> +#include <bootblock_common.h> +#include <device/pnp_type.h> +#include <superio/ite/common/ite.h> +#include <superio/ite/it8728f/it8728f.h> + +static void sbxxx_enable_48mhzout(void) +{ + /* Set auxiliary output clock frequency on OSCOUT2 pin to be 48MHz */ + u32 reg32; + reg32 = misc_read32(0x28); + reg32 &= ~(7 << 19); + reg32 |= (2 << 19); + misc_write32(0x28, reg32); + + /* Enable Auxiliary OSCOUT2 */ + misc_write32(0x40, misc_read32(0x40) & ~(1 << 7)); +} + +static void superio_init_m(void) +{ + const pnp_devfn_t uart = PNP_DEV(0x2e, IT8728F_SP1); + const pnp_devfn_t gpio = PNP_DEV(0x2e, IT8728F_GPIO); + + ite_kill_watchdog(gpio); + ite_enable_serial(uart, CONFIG_TTYS0_BASE); + ite_enable_3vsbsw(gpio); +} + +void bootblock_mainboard_early_init(void) +{ + /* enable SIO clock */ + sbxxx_enable_48mhzout(); + + superio_init_m(); +} |