/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #include #include /* SMBUS0_BASE_ADDRESS */ #include #include "mainboard/lippert/frontrunner-af/sema.h" static void init(struct device *dev) { volatile u8 *spi_base; /* base addr of Hudson's SPI host controller */ printk(BIOS_DEBUG, CONFIG_MAINBOARD_PART_NUMBER " ENTER %s\n", __func__); /* Init Hudson GPIOs. */ printk(BIOS_DEBUG, "Init FCH GPIOs @ 0x%08x\n", ACPI_MMIO_BASE+GPIO_BASE); /* GPIO50: FCH_ARST#_GATE resets stuck PCIe devices */ iomux_write8(50, 2); /* output set to 1 as it's never needed */ iomux_write8(50, 0xc0); /* GPIO197: BIOS_DEFAULTS# = input (int. PU) */ iomux_write8(197, 2); /* input, disable int. pull-up */ gpio_100_write8(197, 0x28); /* GPIO58-56: REV_ID2-0 */ iomux_write8(56, 1); /* inputs, disable int. pull-ups */ gpio_100_write8(56, 0x28); iomux_write8(57, 1); gpio_100_write8(57, 0x28); iomux_write8(58, 1); gpio_100_write8(58, 0x28); /* GPIO187,188,166,GPO160: GPO0-3 on COM Express connector */ iomux_write8(187, 2); /* outputs, disable PUs, default to 0 */ gpio_100_write8(187, 0x08); iomux_write8(188, 2); gpio_100_write8(188, 0x08); iomux_write8(166, 2); gpio_100_write8(166, 0x08); /* * needed to make GPO160 work (Hudson Register Reference * section 2.3.6.1) */ pm_write8(0xdc, pm_read8(0xdc) & (~0x80)); pm_write8(0xe6, (pm_read8(0xe6) & (~0x02)) | 1); iomux_write8(160, 1); gpio_100_write8(160, 0x08); /* GPIO189-192: GPI0-3 on COM Express connector */ iomux_write8(189, 1); /* default to inputs with int. PU */ iomux_write8(190, 1); iomux_write8(191, 1); iomux_write8(192, 1); /* just in case anyone cares */ if (!fch_gpio_state(197)) printk(BIOS_INFO, "BIOS_DEFAULTS jumper is present.\n"); printk(BIOS_INFO, "Board revision ID: %u\n", fch_gpio_state(58)<<2 | fch_gpio_state(57)<<1 | fch_gpio_state(56)); /* Lower SPI speed from default 66 to 22 MHz for SST 25VF032B */ spi_base = (u8 *)((uintptr_t)pci_read_config32(pcidev_on_root(0x14, 3), 0xA0) & 0xFFFFFFE0); /* NormSpeed in SPI_Cntrl1 register */ spi_base[0x0D] = (spi_base[0x0D] & ~0x30) | 0x20; /* * Notify the SMC we're alive and kicking, or after a while it will * effect a power cycle and switch to the alternate BIOS chip. * Should be done as late as possible. * Failure here does not matter if watchdog was already disabled, * by configuration or previous boot, so ignore return value. */ sema_send_alive(); printk(BIOS_DEBUG, CONFIG_MAINBOARD_PART_NUMBER " EXIT %s\n", __func__); } /********************************************** * Enable the dedicated functions of the board. **********************************************/ static void mainboard_enable(struct device *dev) { printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n"); dev->ops->init = init; /* enable GPP CLK0 thru CLK1 */ /* disable GPP CLK2 thru SLT_GFX_CLK */ misc_write8(0, 0xff); misc_write8(1, 0); misc_write8(2, 0); misc_write8(3, 0); misc_write8(4, 0); /* * Initialize ASF registers to an arbitrary address because someone * long ago set things up this way inside the SPD read code. The * SPD read code has been made generic and moved out of the board * directory, so the ASF init is being done here. */ pm_write8(0x29, 0x80); pm_write8(0x28, 0x61); } struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, };