include/grub/mips/loongson.h

/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 2010  Free Software Foundation, Inc.
 *
 *  GRUB 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef GRUB_LOONGSON_CPU_HEADER
#define GRUB_LOONGSON_CPU_HEADER	1

#include <grub/cpu/mips.h>

#define GRUB_CPU_LOONGSON_FLASH_START            0xbfc00000
#define GRUB_CPU_LOONGSON_FLASH_TLB_REFILL       0xbfc00200
#define GRUB_CPU_LOONGSON_FLASH_CACHE_ERROR      0xbfc00300
#define GRUB_CPU_LOONGSON_FLASH_OTHER_EXCEPTION  0xbfc00380

#define GRUB_CPU_LOONGSON_DDR2_BASE              0xaffffe00
#define GRUB_CPU_LOONGSON_DDR2_REG1_HI_8BANKS    0x00000001
#define GRUB_CPU_LOONGSON_DDR2_REG_SIZE          0x8
#define GRUB_CPU_LOONGSON_DDR2_REG_STEP          0x10

#define GRUB_CPU_LOONGSON_COP0_CACHE_CONFIG GRUB_CPU_REGISTER_WRAP($16)
#define GRUB_CPU_LOONGSON_COP0_CACHE_CONFIG_ILINESIZE 0x10
#define GRUB_CPU_LOONGSON_COP0_CACHE_CONFIG_DLINESIZE 0x8
#define GRUB_CPU_LOONGSON_COP0_CACHE_DSIZE_SHIFT 6
#define GRUB_CPU_LOONGSON_COP0_CACHE_ISIZE_SHIFT 9
#define GRUB_CPU_LOONGSON_COP0_CACHE_SIZE_MASK  0x7
#define GRUB_CPU_LOONGSON_COP0_CACHE_SIZE_OFFSET 12

#define GRUB_CPU_LOONGSON_COP0_I_INDEX_INVALIDATE 0
#define GRUB_CPU_LOONGSON_COP0_D_INDEX_TAG_STORE  9
#define GRUB_CPU_LOONGSON_COP0_S_INDEX_TAG_STORE  11

#define GRUB_CPU_LOONGSON_COP0_I_INDEX_BIT_OFFSET 5
#define GRUB_CPU_LOONGSON_COP0_D_INDEX_BIT_OFFSET 5
#define GRUB_CPU_LOONGSON_COP0_S_INDEX_BIT_OFFSET 5

#define GRUB_CPU_LOONGSON_CACHE_ACCELERATED 7
#define GRUB_CPU_LOONGSON_CACHE_UNCACHED 2
#define GRUB_CPU_LOONGSON_CACHE_CACHED 3
#define GRUB_CPU_LOONGSON_CACHE_TYPE_MASK 7
#define GRUB_CPU_LOONGSON_CACHE_LINE_SIZE_LOG_SMALL 4
#define GRUB_CPU_LOONGSON_CACHE_LINE_SIZE_LOG_BIG 5
#define GRUB_CPU_LOONGSON_CACHE_LINE_SIZE_SMALL 16
#define GRUB_CPU_LOONGSON_CACHE_LINE_SIZE_BIG 32

#define GRUB_CPU_LOONGSON_I_CACHE_LOG_WAYS 2
#define GRUB_CPU_LOONGSON_D_CACHE_LOG_WAYS 2
#define GRUB_CPU_LOONGSON_S_CACHE_LOG_WAYS 2

/* FIXME: determine dynamically.  */
#define GRUB_CPU_LOONGSON_SECONDARY_CACHE_LOG_SIZE 19

#define GRUB_CPU_LOONGSON_COP0_BADVADDR GRUB_CPU_REGISTER_WRAP($8)
#define GRUB_CPU_LOONGSON_COP0_CAUSE GRUB_CPU_REGISTER_WRAP($13)
#define GRUB_CPU_LOONGSON_COP0_EPC GRUB_CPU_REGISTER_WRAP($14)
#define GRUB_CPU_LOONGSON_COP0_PRID GRUB_CPU_REGISTER_WRAP($15)
#define GRUB_CPU_LOONGSON_COP0_CACHE_TAGLO GRUB_CPU_REGISTER_WRAP($28)
#define GRUB_CPU_LOONGSON_COP0_CACHE_TAGHI GRUB_CPU_REGISTER_WRAP($29)

#define GRUB_CPU_LOONGSON_LIOCFG   0xbfe00108
#define GRUB_CPU_LOONGSON_ROM_DELAY_OFFSET 2
#define GRUB_CPU_LOONGSON_ROM_DELAY_MASK 0x1f
#define GRUB_CPU_LOONGSON_CORECFG   0xbfe00180
#define GRUB_CPU_LOONGSON_CORECFG_DISABLE_DDR2_SPACE 0x100
#define GRUB_CPU_LOONGSON_CORECFG_BUFFER_CPU 0x200

#define GRUB_CPU_LOONGSON_PCI_HIT1_SEL_LO   0xbfe00150
#define GRUB_CPU_LOONGSON_PCI_HIT1_SEL_HI   0xbfe00154

#define GRUB_CPU_LOONGSON_GPIOCFG  0xbfe00120
#define GRUB_CPU_YEELOONG_SHUTDOWN_GPIO 1

#endif