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Diffstat (limited to 'include/mpc74xx.h')
| -rw-r--r-- | include/mpc74xx.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/include/mpc74xx.h b/include/mpc74xx.h new file mode 100644 index 0000000..f36392e --- /dev/null +++ b/include/mpc74xx.h @@ -0,0 +1,98 @@ +/* + * (C) Copyright 2001 + * Josh Huber, Mission Critical Linux, Inc. <huber@mclx.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * mpc74xx.h + * + * MPC74xx specific definitions + */ + +#ifndef __MPC74XX_H__ +#define __MPC74XX_H__ + +/*---------------------------------------------------------------- + * Exception offsets (PowerPC standard) + */ +#define EXC_OFF_SYS_RESET 0x0100 /* default system reset offset */ + +/*---------------------------------------------------------------- + * l2cr values + */ +#define l2cr 1017 + +#define L2CR_L2E 0x80000000 /* bit 0 - enable */ +#define L2CR_L2PE 0x40000000 /* bit 1 - data parity */ +#define L2CR_L2SIZ_2M 0x00000000 /* bits 2-3 - 2MB, MPC7400 only! */ +#define L2CR_L2SIZ_1M 0x30000000 /* ... 1MB */ +#define L2CR_L2SIZ_HM 0x20000000 /* ... 512K */ +#define L2CR_L2SIZ_QM 0x10000000 /* ... 256k */ +#define L2CR_L2CLK_1 0x02000000 /* bits 4-6 clock ratio div 1 */ +#define L2CR_L2CLK_1_5 0x04000000 /* bits 4-6 clock ratio div 1.5 */ +#define L2CR_L2CLK_2 0x08000000 /* bits 4-6 clock ratio div 2 */ +#define L2CR_L2CLK_2_5 0x0a000000 /* bits 4-6 clock ratio div 2.5 */ +#define L2CR_L2CLK_3 0x0c000000 /* bits 4-6 clock ratio div 3 */ +#define L2CR_L2CLK_3_5 0x06000000 /* bits 4-6 clock ratio div 3.5 */ +#define L2CR_L2CLK_4 0x0e000000 /* bits 4-6 clock ratio div 4 */ +#define L2CR_L2RAM_BURST 0x01000000 /* bits 7-8 - burst SRAM */ +#define L2CR_DO 0x00400000 /* bit 9 - enable caching of instr. in L2 */ +#define L2CR_L2I 0x00200000 /* bit 10 - global invalidate bit */ +#define L2CR_L2CTL 0x00100000 /* bit 11 - l2 ram control */ +#define L2CR_L2WT 0x00080000 /* bit 12 - l2 write-through */ +#define L2CR_TS 0x00040000 /* bit 13 - test support on */ +#define L2CR_TS_OFF -L2CR_TS /* bit 13 - test support off */ +#define L2CR_L2OH_5 0x00000000 /* bits 14-15 - output hold time = short */ +#define L2CR_L2OH_1 0x00010000 /* bits 14-15 - output hold time = medium */ +#define L2CR_L2OH_INV 0x00020000 /* bits 14-15 - output hold time = long */ +#define L2CR_L2IP 0x00000001 /* global invalidate in progress */ + +/*---------------------------------------------------------------- + * BAT settings. Look in config_<BOARD>.h for the actual setup + */ + +#define BATU_BL_128K 0x00000000 +#define BATU_BL_256K 0x00000004 +#define BATU_BL_512K 0x0000000c +#define BATU_BL_1M 0x0000001c +#define BATU_BL_2M 0x0000003c +#define BATU_BL_4M 0x0000007c +#define BATU_BL_8M 0x000000fc +#define BATU_BL_16M 0x000001fc +#define BATU_BL_32M 0x000003fc +#define BATU_BL_64M 0x000007fc +#define BATU_BL_128M 0x00000ffc +#define BATU_BL_256M 0x00001ffc + +#define BATU_VS 0x00000002 +#define BATU_VP 0x00000001 +#define BATU_INVALID 0x00000000 + +#define BATL_WRITETHROUGH 0x00000040 /* W */ +#define BATL_CACHEINHIBIT 0x00000020 /* I */ +#define BATL_COHERENT 0x00000010 /* M */ +#define BATL_GUARDED 0x00000008 /* G */ + +#define BATL_NO_ACCESS 0x00000000 +#define BATL_RO 0x00000001 +#define BATL_RW 0x00000002 + +#endif /* __MPC74XX_H__ */ |