| /* |
| * This file is part of the LinuxBIOS project. |
| * |
| * Copyright (C) 2007 Corey Osgood <corey@slightlyhackish.com> |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 |
| */ |
| |
| #ifndef NORTHBRIDGE_INTEL_I82810_RAMINIT_H |
| #define NORTHBRIDGE_INTEL_I82810_RAMINIT_H |
| |
| /* The 82810 supports max. 2 dual-sided DIMMs. */ |
| #define DIMM_SOCKETS 2 |
| |
| struct mem_controller { |
| device_t d0; |
| uint16_t channel0[DIMM_SOCKETS]; |
| }; |
| |
| /* The following table has been bumped over to this header to avoid clutter in |
| * raminit.c. It's used to translate the value read from SPD Byte 31 to a value |
| * the northbridge can understand in DRP, aka Rx52[7:4], [3:0]. Where most |
| * northbridges have some sort of simple calculation that can be done for this, |
| * I haven't yet figured out one for this northbridge. Until someone does, |
| * this table is necessary. |
| */ |
| |
| /* TODO: Find a better way of doing this. */ |
| |
| static const uint8_t translate_spd_to_i82810[] = { |
| /* Note: 4MB sizes are not supported, so dual-sided DIMMs with a 4MB |
| * side can't be either, at least for now. |
| */ |
| /* TODO: For above case, only use the other side if > 4MB, and get some |
| * of these DIMMs to test it with. Same for unsupported 128/x sizes. |
| */ |
| |
| /* SPD Byte 31 Memory Size [Side 1/2] */ |
| 0xff, /* 0x01 No memory */ |
| 0xff, /* 0x01 4/0 */ |
| 0x01, /* 0x02 8/0 */ |
| 0xff, /* 0x03 8/4 */ |
| 0x04, /* 0x04 16/0 or 16 */ |
| 0xff, /* 0x05 16/4 */ |
| 0x05, /* 0x06 16/8 */ |
| 0xff, /* 0x07 Invalid */ |
| 0x07, /* 0x08 32/0 or 32 */ |
| 0xff, /* 0x09 32/4 */ |
| 0xff, /* 0x0A 32/8 */ |
| 0xff, /* 0x0B Invalid */ |
| 0x08, /* 0x0C 32/16 */ |
| 0xff, 0xff, 0xff, /* 0x0D-0F Invalid */ |
| 0x0a, /* 0x10 64/0 or 64 */ |
| 0xff, /* 0x11 64/4 */ |
| 0xff, /* 0x12 64/8 */ |
| 0xff, /* 0x13 Invalid */ |
| 0xff, /* 0x14 64/16 */ |
| 0xff, 0xff, 0xff, /* 0x15-17 Invalid */ |
| 0x0b, /* 0x18 64/32 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x19-1f Invalid */ |
| 0x0d, /* 0x20 128/0 or 128 */ |
| /* These configurations are not supported by the i810 */ |
| 0xff, /* 0x21 128/4 */ |
| 0xff, /* 0x22 128/8 */ |
| 0xff, /* 0x23 Invalid */ |
| 0xff, /* 0x24 128/16 */ |
| 0xff, 0xff, 0xff, /* 0x25-27 Invalid */ |
| 0xff, /* 0x28 128/32 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x29-2f Invalid */ |
| 0x0e, /* 0x30 128/64 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, /* 0x31-3f Invalid */ |
| 0x0f, /* 0x40 256/0 or 256 */ |
| /* Anything larger is not supported by the 82810. */ |
| }; |
| |
| #endif /* NORTHBRIDGE_INTEL_I82810_RAMINIT_H */ |