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/*
* (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
*/
/*
* 74xx_7xx.h
*
* 74xx/7xx 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
#define BATL_CACHEINHIBIT 0x00000020
#define BATL_MEMCOHERENCE 0x00000010
#define BATL_GUARDEDSTORAGE 0x00000008
#define BATL_NO_ACCESS 0x00000000
#define BATL_PP_MSK 0x00000003
#define BATL_PP_00 0x00000000 /* No access */
#define BATL_PP_01 0x00000001 /* Read-only */
#define BATL_PP_10 0x00000002 /* Read-write */
#define BATL_PP_11 0x00000003
#define BATL_PP_NO_ACCESS BATL_PP_00
#define BATL_PP_RO BATL_PP_01
#define BATL_PP_RW BATL_PP_10
#ifndef __ASSEMBLY__
/* cpu ids we detect */
typedef enum __cpu_t {
CPU_740, CPU_750,
CPU_740P, CPU_750P,
CPU_745, CPU_755,
CPU_750CX, CPU_750FX, CPU_750GX,
CPU_7400,
CPU_7410,
CPU_7450, CPU_7455, CPU_7457,
CPU_UNKNOWN} cpu_t;
extern cpu_t get_cpu_type(void);
#define l1icache_enable icache_enable
void l2cache_enable(void);
void l1dcache_enable(void);
static __inline__ unsigned long get_msr (void)
{
unsigned long msr;
asm volatile("mfmsr %0" : "=r" (msr) :);
return msr;
}
static __inline__ void set_msr (unsigned long msr)
{
asm volatile("mtmsr %0" : : "r" (msr));
}
static __inline__ unsigned long get_hid0 (void)
{
unsigned long hid0;
asm volatile("mfspr %0, 1008" : "=r" (hid0) :);
return hid0;
}
static __inline__ unsigned long get_hid1 (void)
{
unsigned long hid1;
asm volatile("mfspr %0, 1009" : "=r" (hid1) :);
return hid1;
}
static __inline__ void set_hid0 (unsigned long hid0)
{
asm volatile("mtspr 1008, %0" : : "r" (hid0));
}
static __inline__ void set_hid1 (unsigned long hid1)
{
asm volatile("mtspr 1009, %0" : : "r" (hid1));
}
#endif /* __ASSEMBLY__ */
#endif /* __MPC74XX_H__ */
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