Alexandru Gagniuc (mr.nuke.me@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3266
-gerrit
commit c8e2156f1fa5b1aa8d55729a9fcedd6e8212fb1e Author: Alexandru Gagniuc mr.nuke.me@gmail.com Date: Tue May 21 14:07:41 2013 -0500
include/device: Add convenience definitions for DRAM SPDs
Add definitions for identifying the type of module from SPD data. Also add a macro for convenient enabling and disabling of verbose RAM init debug messages.
These are used in the VX900 branch.
Change-Id: Ic7871e82c2523a94eac8e07979a8e34e0b459b46 Signed-off-by: Alexandru Gagniuc mr.nuke.me@gmail.com --- src/include/device/dram.h | 89 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+)
diff --git a/src/include/device/dram.h b/src/include/device/dram.h new file mode 100644 index 0000000..9f489e1 --- /dev/null +++ b/src/include/device/dram.h @@ -0,0 +1,89 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011-2013 Alexandru Gagniuc mr.nuke.me@gmail.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, see http://www.gnu.org/licenses/. + */ + +#ifndef DEVICE_DRAM_H +#define DEVICE_DRAM_H + +/** + * @file dram.h + * + * \brief Common definitions for DRAM SPDs + * + * Include this file as: + * @code{.c} + * #include <device/dram.h> + * @endcode + * + * @{ + */ + +#include <stdint.h> + + +/* DRAM type, byte 2 of spd */ +enum dram_type { + DRAM_TYPE_UNDEFINED = 0x00, + DRAM_TYPE_FPM_DRAM = 0x01, + DRAM_TYPE_EDO = 0x02, + DRAM_TYPE_PIPELINED_NIBBLE = 0x03, + DRAM_TYPE_SDRAM = 0x04, + DRAM_TYPE_ROM = 0x05, + DRAM_TYPE_DDR_SGRAM = 0x06, + DRAM_TYPE_DDR = 0x07, + DRAM_TYPE_DDR2 = 0x08, + DRAM_TYPE_DDR2_FBDIMM = 0x09, + DRAM_TYPE_DDR2_FB_PROBE = 0x0a, + DRAM_TYPE_DDR3 = 0x0b, +}; + +/* Module type (byte 3, bits 3:0) of SPD */ +enum dimm_type { + DIMM_TYPE_UNDEFINED = 0, + DIMM_TYPE_RDIMM = 1, + DIMM_TYPE_UDIMM = 2, + DIMM_TYPE_SO_DIMM = 3, + DIMM_TYPE_MICRO_DIMM = 4, + DIMM_TYPE_MINI_RDIMM = 5, + DIMM_TYPE_MINI_UDIMM = 6, + DIMM_TYPE_MINI_CDIMM = 7, + DIMM_TYPE_72B_SO_UDIMM = 8, + DIMM_TYPE_72B_SO_RDIMM = 9, + DIMM_TYPE_72B_SO_CDIMM = 10, + /* Masks to bits 3:0 to give the dimm type */ + DIMM_TYPE_MASK = 0x0f, +}; + +/** + * \brief Convenience macro for enabling printk with CONFIG_DEBUG_RAM_SETUP + * + * Use this macro instead of printk(); for verbose RAM initialization messages. + * When CONFIG_DEBUG_RAM_SETUP is not selected, these messages are automatically + * disabled. + * @{ + */ +#if defined(CONFIG_DEBUG_RAM_SETUP) && (CONFIG_DEBUG_RAM_SETUP) +#define printram(x, ...) printk(BIOS_DEBUG, x, ##__VA_ARGS__) +#else +#define printram(x, ...) +#endif +/** @} */ + + +/** @} */ +#endif /* DEVICE_DRAM_H */