From 133647aa8689810c3e15d31ae163e7c865aeaf92 Mon Sep 17 00:00:00 2001 From: Rudolf Marek Date: Mon, 5 Apr 2010 19:47:34 +0000 Subject: Signed-off-by: Rudolf Marek Acked-by: Stefan Reinauer Add Asrock 939a785gmh motherboard. The ACPI needs more cleanup, could be done when cleaning the Mahagony board. The SidePort mode does not work because AMD hardcoded memory type in rs780_gfx.c The UMA is enabled instead. The board boots, network and int VGA works, IDE too. git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5357 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/mainboard/asrock/939a785gmh/mainboard.c | 174 ++++++++++++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100644 src/mainboard/asrock/939a785gmh/mainboard.c (limited to 'src/mainboard/asrock/939a785gmh/mainboard.c') diff --git a/src/mainboard/asrock/939a785gmh/mainboard.c b/src/mainboard/asrock/939a785gmh/mainboard.c new file mode 100644 index 0000000000..44752f1e91 --- /dev/null +++ b/src/mainboard/asrock/939a785gmh/mainboard.c @@ -0,0 +1,174 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include <../southbridge/amd/sb700/sb700.h> +#include "chip.h" + +#define SMBUS_IO_BASE 0x6000 + +extern void lb_add_memory_range(struct lb_memory *mem, uint32_t type, + uint64_t start, uint64_t size); + +uint64_t uma_memory_base, uma_memory_size; + +void set_pcie_dereset(void); +void set_pcie_reset(void); + +/* + * Mahogany uses GPIO 6 as PCIe slot reset, GPIO4 as GFX slot reset. We need to + * pull it up before training the slot. + ***/ +void set_pcie_dereset() +{ + u16 word; + device_t sm_dev; + /* GPIO 6 reset PCIe slot, GPIO 4 reset GFX PCIe */ + sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); + + word = pci_read_config16(sm_dev, 0xA8); + word |= (1 << 0) | (1 << 2); /* Set Gpio6,4 as output */ + word &= ~((1 << 8) | (1 << 10)); + pci_write_config16(sm_dev, 0xA8, word); +} + +void set_pcie_reset() +{ + u16 word; + device_t sm_dev; + /* GPIO 6 reset PCIe slot, GPIO 4 reset GFX PCIe */ + sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); + + word = pci_read_config16(sm_dev, 0xA8); + word &= ~((1 << 0) | (1 << 2)); /* Set Gpio6,4 as output */ + word &= ~((1 << 8) | (1 << 10)); + pci_write_config16(sm_dev, 0xA8, word); +} + +#if 0 /* not tested yet */ +/******************************************************** +* mahogany uses SB700 GPIO9 to detect IDE_DMA66. +* IDE_DMA66 is routed to GPIO 9. So we read Gpio 9 to +* get the cable type, 40 pin or 80 pin? +********************************************************/ +static void get_ide_dma66(void) +{ + u8 byte; + /*u32 sm_dev, ide_dev; */ + device_t sm_dev, ide_dev; + + sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); + + byte = pci_read_config8(sm_dev, 0xA9); + byte |= (1 << 5); /* Set Gpio9 as input */ + pci_write_config8(sm_dev, 0xA9, byte); + + ide_dev = dev_find_slot(0, PCI_DEVFN(0x14, 1)); + byte = pci_read_config8(ide_dev, 0x56); + byte &= ~(7 << 0); + if ((1 << 5) & pci_read_config8(sm_dev, 0xAA)) + byte |= 2 << 0; /* mode 2 */ + else + byte |= 5 << 0; /* mode 5 */ + pci_write_config8(ide_dev, 0x56, byte); +} +#endif /* get_ide_dma66 */ + +/************************************************* +* enable the dedicated function in mahogany board. +* This function called early than rs780_enable. +*************************************************/ +static void mahogany_enable(device_t dev) +{ + /* Leave it for future. */ + /* struct mainboard_config *mainboard = + (struct mainboard_config *)dev->chip_info;*/ + + printk(BIOS_INFO, "Mainboard MAHOGANY Enable. dev=0x%p\n", dev); + +#if (CONFIG_GFXUMA == 1) + msr_t msr, msr2; + + /* TOP_MEM: the top of DRAM below 4G */ + msr = rdmsr(TOP_MEM); + printk + (BIOS_INFO, "%s, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n", + __func__, msr.lo, msr.hi); + + /* TOP_MEM2: the top of DRAM above 4G */ + msr2 = rdmsr(TOP_MEM2); + printk + (BIOS_INFO, "%s, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n", + __func__, msr2.lo, msr2.hi); + + /* refer to UMA Size Consideration in 780 BDG. */ + switch (msr.lo) { + case 0x10000000: /* 256M system memory */ + uma_memory_size = 0x4000000; /* 64M recommended UMA */ + break; + + case 0x20000000: /* 512M system memory */ + uma_memory_size = 0x8000000; /* 128M recommended UMA */ + break; + + default: /* 1GB and above system memory */ + uma_memory_size = 0x10000000; /* 256M recommended UMA */ + break; + } + + uma_memory_base = msr.lo - uma_memory_size; /* TOP_MEM1 */ + printk(BIOS_INFO, "%s: uma size 0x%08llx, memory start 0x%08llx\n", + __func__, uma_memory_size, uma_memory_base); + + /* TODO: TOP_MEM2 */ +#else + uma_memory_size = 0x8000000; /* 128M recommended UMA */ + uma_memory_base = 0x38000000; /* 1GB system memory supposed */ +#endif + + set_pcie_dereset(); + /* get_ide_dma66(); */ +} + +int add_mainboard_resources(struct lb_memory *mem) +{ + /* UMA is removed from system memory in the northbridge code, but + * in some circumstances we want the memory mentioned as reserved. + */ +#if (CONFIG_GFXUMA == 1) + printk(BIOS_INFO, "uma_memory_start=0x%llx, uma_memory_size=0x%llx \n", + uma_memory_base, uma_memory_size); + lb_add_memory_range(mem, LB_MEM_RESERVED, uma_memory_base, + uma_memory_size); +#endif + return 0; +} + +struct chip_operations mainboard_ops = { + CHIP_NAME("AMD MAHOGANY Mainboard") + .enable_dev = mahogany_enable, +}; -- cgit v1.2.3