| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <stdint.h> |
| #include <amdblocks/acpimmio.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ops.h> |
| #include <gpio.h> |
| #include <northbridge/amd/agesa/state_machine.h> |
| |
| #include "gpio_ftns.h" |
| |
| static void early_lpc_init(void); |
| |
| void board_BeforeAgesa(struct sysinfo *cb) |
| { |
| u32 val; |
| |
| early_lpc_init(); |
| |
| /* Disable SVI2 controller to wait for command completion */ |
| val = pci_read_config32(PCI_DEV(0, 0x18, 5), 0x12C); |
| if (!(val & (1 << 30))) { |
| val |= (1 << 30); |
| pci_write_config32(PCI_DEV(0, 0x18, 5), 0x12C, val); |
| } |
| |
| /* Release GPIO32/33 for other uses. */ |
| pm_write8(0xea, 1); |
| } |
| |
| static void pin_input(gpio_t gpio, u8 iomux_ftn) |
| { |
| iomux_write8(gpio, iomux_ftn); |
| gpio_input(gpio); |
| } |
| |
| static void pin_low(gpio_t gpio, u8 iomux_ftn) |
| { |
| iomux_write8(gpio, iomux_ftn); |
| gpio_output(gpio, 0); |
| } |
| |
| static void pin_high(gpio_t gpio, u8 iomux_ftn) |
| { |
| iomux_write8(gpio, iomux_ftn); |
| gpio_output(gpio, 1); |
| } |
| |
| static void early_lpc_init(void) |
| { |
| // |
| // Configure output disabled, pull up/down disabled |
| // |
| if (CONFIG(BOARD_PCENGINES_APU5)) |
| pin_input(GPIO_22, Function0); |
| |
| if (CONFIG(BOARD_PCENGINES_APU2) || |
| CONFIG(BOARD_PCENGINES_APU3) || |
| CONFIG(BOARD_PCENGINES_APU4)) { |
| pin_input(GPIO_32, Function0); |
| } |
| |
| pin_input(GPIO_49, Function2); |
| pin_input(GPIO_50, Function2); |
| pin_input(GPIO_71, Function0); |
| |
| // |
| // Configure output enabled, value low, pull up/down disabled |
| // |
| if (CONFIG(BOARD_PCENGINES_APU3) || |
| CONFIG(BOARD_PCENGINES_APU4)) { |
| pin_low(GPIO_33, Function0); |
| } |
| pin_low(GPIO_57, Function1); |
| pin_low(GPIO_58, Function1); |
| pin_low(GPIO_59, Function3); |
| |
| // |
| // Configure output enabled, value high, pull up/down disabled |
| // |
| if (CONFIG(BOARD_PCENGINES_APU5)) { |
| pin_high(GPIO_32, Function0); |
| pin_high(GPIO_33, Function0); |
| } |
| |
| pin_high(GPIO_51, Function2); |
| pin_high(GPIO_55, Function3); |
| pin_high(GPIO_64, Function2); |
| pin_high(GPIO_68, Function0); |
| } |