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Diffstat (limited to 'board/eltec/bab7xx/l2cache.c')
| -rw-r--r-- | board/eltec/bab7xx/l2cache.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/board/eltec/bab7xx/l2cache.c b/board/eltec/bab7xx/l2cache.c deleted file mode 100644 index 787704f..0000000 --- a/board/eltec/bab7xx/l2cache.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * (C) Copyright 2002 ELTEC Elektronik AG - * Frank Gottschling <fgottschling@eltec.de> - * - * 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 - */ - -#include <common.h> - -#if defined(CONFIG_SYS_L2_BAB7xx) - -#include <pci.h> -#include <mpc106.h> -#include <asm/processor.h> - -/* defines L2CR register for MPC750 */ - -#define L2CR_E 0x80000000 -#define L2CR_256K 0x10000000 -#define L2CR_512K 0x20000000 -#define L2CR_1024K 0x30000000 -#define L2CR_I 0x00200000 -#define L2CR_SL 0x00008000 -#define L2CR_IP 0x00000001 - -/*----------------------------------------------------------------------------*/ - -static int dummy (int dummy) -{ - return (dummy+1); -} - -/*----------------------------------------------------------------------------*/ - -int l2_cache_enable (int l2control) -{ - if (l2control) /* BAB750 */ - { - mtspr(SPRN_L2CR, l2control); - mtspr(SPRN_L2CR, (l2control | L2CR_I)); - while (mfspr(SPRN_L2CR) & L2CR_IP) - ; - mtspr(SPRN_L2CR, (l2control | L2CR_E)); - return (0); - } - else /* BAB740 */ - { - int picr1, picr2, mask; - int picr2CacheSize, cacheSize; - int *d; - int devbusfn; - u32 reg32; - - devbusfn = pci_find_device(PCI_VENDOR_ID_MOTOROLA, - PCI_DEVICE_ID_MOTOROLA_MPC106, 0); - if (devbusfn == -1) - return (-1); - - pci_read_config_dword (devbusfn, PCI_PICR2, ®32); - reg32 &= ~PICR2_L2_EN; - pci_write_config_dword (devbusfn, PCI_PICR2, reg32); - - /* cache size */ - if (*(volatile unsigned char *) (CONFIG_SYS_ISA_IO + 0x220) & 0x04) - { - /* cache size is 512 KB */ - picr2CacheSize = PICR2_L2_SIZE_512K; - cacheSize = 0x80000; - } - else - { - /* cache size is 256 KB */ - picr2CacheSize = PICR2_L2_SIZE_256K; - cacheSize = 0x40000; - } - - /* setup PICR1 */ - mask = - ~(PICR1_CF_BREAD_WS(1) | - PICR1_CF_BREAD_WS(2) | - PICR1_CF_CBA(0xff) | - PICR1_CF_CACHE_1G | - PICR1_CF_DPARK | - PICR1_CF_APARK | - PICR1_CF_L2_CACHE_MASK); - - picr1 = - (PICR1_CF_CBA(0x3f) | - PICR1_CF_CACHE_1G | - PICR1_CF_APARK | - PICR1_CF_DPARK | - PICR1_CF_L2_COPY_BACK); /* PICR1_CF_L2_WRITE_THROUGH */ - - pci_read_config_dword (devbusfn, PCI_PICR1, ®32); - reg32 &= mask; - reg32 |= picr1; - pci_write_config_dword (devbusfn, PCI_PICR1, reg32); - - /* - * invalidate all L2 cache - */ - picr2 = - (PICR2_CF_INV_MODE | - PICR2_CF_HIT_HIGH | - PICR2_CF_MOD_HIGH | - PICR2_CF_L2_HIT_DELAY(1) | - PICR2_CF_APHASE_WS(1) | - picr2CacheSize); - - pci_write_config_dword (devbusfn, PCI_PICR2, picr2); - - /* - * dummy transactions - */ - for (d=0; d<(int *)(2*cacheSize); d++) - dummy(*d); - - pci_write_config_dword (devbusfn, PCI_PICR2, - (picr2 | PICR2_CF_FLUSH_L2)); - - /* setup PICR2 */ - picr2 = - (PICR2_CF_FAST_CASTOUT | - PICR2_CF_WDATA | - PICR2_CF_ADDR_ONLY_DISABLE | - PICR2_CF_HIT_HIGH | - PICR2_CF_MOD_HIGH | - PICR2_L2_UPDATE_EN | - PICR2_L2_EN | - PICR2_CF_APHASE_WS(1) | - PICR2_CF_DATA_RAM_PBURST | - PICR2_CF_L2_HIT_DELAY(1) | - PICR2_CF_SNOOP_WS(2) | - picr2CacheSize); - - pci_write_config_dword (devbusfn, PCI_PICR2, picr2); - } - return (0); -} - -/*----------------------------------------------------------------------------*/ - -#endif /* (CONFIG_SYS_L2_BAB7xx) */ |