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Diffstat (limited to 'src/mainboard/amd/torpedo/mainboard.c')
-rwxr-xr-x | src/mainboard/amd/torpedo/mainboard.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/mainboard/amd/torpedo/mainboard.c b/src/mainboard/amd/torpedo/mainboard.c new file mode 100755 index 0000000000..288798fdb2 --- /dev/null +++ b/src/mainboard/amd/torpedo/mainboard.c @@ -0,0 +1,119 @@ +/* + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <arch/io.h> +#include <boot/tables.h> +#include <cpu/x86/msr.h> +#include <cpu/amd/mtrr.h> +#include <device/pci_def.h> +//#include <southbridge/amd/sb900/sb900.h> +#include "chip.h" + +#define ONE_MB 0x100000 +//#define SMBUS_IO_BASE 0x6000 + +/** + * TODO + * SB CIMx callback + */ +void set_pcie_reset(void) +{ +} + +/** + * TODO + * mainboard specific SB CIMx callback + */ +void set_pcie_dereset(void) +{ +} + +uint64_t uma_memory_base, uma_memory_size; + +/************************************************* +* enable the dedicated function in torpedo board. +*************************************************/ +static void torpedo_enable(device_t dev) +{ + printk(BIOS_INFO, "Mainboard Torpedo Enable. dev=0x%p\n", dev); +#if (CONFIG_GFXUMA == 1) + msr_t msr, msr2; + uint32_t sys_mem; + + /* 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 Family12h BKDG. */ + /* Please reference MemNGetUmaSizeLN () */ + /* + * Total system memory UMASize + * >= 2G 512M + * >=1G 256M + * <1G 64M + */ + sys_mem = msr.lo; + sys_mem = msr.lo + 16 * ONE_MB; // Ignore 16MB allocated for C6 when finding UMA size + if (sys_mem >= 2048 * ONE_MB) { + uma_memory_size = 512 * ONE_MB; + } else if (sys_mem >= 1024 * ONE_MB) { + uma_memory_size = 256 * ONE_MB; + } else { + uma_memory_size = 64 * ONE_MB; + } + 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 = 0x10000000; /* 256M recommended UMA */ + uma_memory_base = 0x30000000; /* 1GB system memory supported */ +#endif + +} + +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 TORPEDO Mainboard") + .enable_dev = torpedo_enable, +}; |