/* * This file is part of the coreboot project. * * Copyright (C) 2011 Advanced Micro Devices, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "SBPLATFORM.h" #include "OEM.h" /* SMBUS0_BASE_ADDRESS */ #include /* Write data block to slave on SMBUS0. */ #define SMB0_STATUS ((SMBUS0_BASE_ADDRESS) + 0) #define SMB0_CONTROL ((SMBUS0_BASE_ADDRESS) + 2) #define SMB0_HOSTCMD ((SMBUS0_BASE_ADDRESS) + 3) #define SMB0_ADDRESS ((SMBUS0_BASE_ADDRESS) + 4) #define SMB0_DATA0 ((SMBUS0_BASE_ADDRESS) + 5) #define SMB0_BLOCKDATA ((SMBUS0_BASE_ADDRESS) + 7) static int smb_write_blk(u8 slave, u8 command, u8 length, const u8 *data) { __outbyte(SMB0_STATUS, 0x1E); // clear error status __outbyte(SMB0_ADDRESS, slave & ~1); // slave addr + direction=out __outbyte(SMB0_HOSTCMD, command); // or destination offset __outbyte(SMB0_DATA0, length); // sent before data __inbyte(SMB0_CONTROL); // reset block data array while (length--) __outbyte(SMB0_BLOCKDATA, *(data++)); __outbyte(SMB0_CONTROL, 0x54); // execute block write, no IRQ while (__inbyte(SMB0_STATUS) == 0x01) ; // busy, no errors return __inbyte(SMB0_STATUS) ^ 0x02; // 0x02 = completed, no errors } static void init(struct device *dev) { volatile u8 *spi_base; // base addr of Hudson's SPI host controller int i; 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); FCH_IOMUX( 50) = 2; // GPIO50: FCH_ARST#_GATE resets stuck PCIe devices FCH_GPIO ( 50) = 0xC0; // = output set to 1 as it's never needed FCH_IOMUX(197) = 2; // GPIO197: BIOS_DEFAULTS# FCH_GPIO (197) = 0x28; // = input, disable int. pull-up FCH_IOMUX( 56) = 1; // GPIO58-56: REV_ID2-0 FCH_GPIO ( 56) = 0x28; // = inputs, disable int. pull-ups FCH_IOMUX( 57) = 1; FCH_GPIO ( 57) = 0x28; FCH_IOMUX( 58) = 1; FCH_GPIO ( 58) = 0x28; FCH_IOMUX(187) = 2; // GPIO187,188,166,GPO160: GPO0-3 on COM Express connector FCH_GPIO (187) = 0x08; // = outputs, disable PUs, default to 0 FCH_IOMUX(188) = 2; FCH_GPIO (188) = 0x08; FCH_IOMUX(166) = 2; FCH_GPIO (166) = 0x08; // needed to make GPO160 work (Hudson Register Reference section 2.3.6.1) FCH_PMIO(0xDC) &= ~0x80; FCH_PMIO(0xE6) = (FCH_PMIO(0xE6) & ~0x02) | 0x01; FCH_IOMUX(160) = 1; FCH_GPIO (160) = 0x08; FCH_IOMUX(189) = 1; // GPIO189-192: GPI0-3 on COM Express connector FCH_IOMUX(190) = 1; // default to inputs with int. PU FCH_IOMUX(191) = 1; FCH_IOMUX(192) = 1; if (!fch_gpio_state(197)) // just in case anyone cares 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*)(pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x14, 3)), 0xA0) & 0xFFFFFFE0); spi_base[0x0D] = (spi_base[0x0D] & ~0x30) | 0x20; // NormSpeed in SPI_Cntrl1 register /* 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. */ printk(BIOS_INFO, "Sending BIOS alive message\n"); const u8 i_am_alive[] = { 0x03 }; //bit2=SEL_DP0: 0=DDI2, 1=LVDS if ((i = smb_write_blk(0x50, 0x25, sizeof(i_am_alive), i_am_alive))) printk(BIOS_ERR, "smb_write_blk failed: %d\n", i); printk(BIOS_DEBUG, CONFIG_MAINBOARD_PART_NUMBER " EXIT %s\n", __func__); } void set_pcie_reset(void); void set_pcie_dereset(void); /** * TODO * SB CIMx callback */ void set_pcie_reset(void) { } /** * TODO * mainboard specific SB CIMx callback */ void set_pcie_dereset(void) { } /********************************************** * Enable the dedicated functions of the board. **********************************************/ static void mainboard_enable(device_t 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 */ u8 *misc_mem_clk_cntrl = (u8 *)(ACPI_MMIO_BASE + MISC_BASE); *(misc_mem_clk_cntrl + 0) = 0xFF; *(misc_mem_clk_cntrl + 1) = 0x00; *(misc_mem_clk_cntrl + 2) = 0x00; *(misc_mem_clk_cntrl + 3) = 0x00; *(misc_mem_clk_cntrl + 4) = 0x00; /* * 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_iowrite(0x29, 0x80); pm_iowrite(0x28, 0x61); } struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, };