diff options
Diffstat (limited to 'cpu/bf537/cpu.c')
| -rw-r--r-- | cpu/bf537/cpu.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/cpu/bf537/cpu.c b/cpu/bf537/cpu.c deleted file mode 100644 index 7233908..0000000 --- a/cpu/bf537/cpu.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * U-boot - cpu.c CPU specific functions - * - * Copyright (c) 2005-2007 Analog Devices Inc. - * - * (C) Copyright 2000-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.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., 51 Franklin St, Fifth Floor, Boston, - * MA 02110-1301 USA - */ - -#include <common.h> -#include <asm/blackfin.h> -#include <command.h> -#include <asm/entry.h> -#include <asm/cplb.h> -#include <asm/io.h> - -#define CACHE_ON 1 -#define CACHE_OFF 0 - -extern unsigned int icplb_table[page_descriptor_table_size][2]; -extern unsigned int dcplb_table[page_descriptor_table_size][2]; - -int do_reset(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) -{ - __asm__ __volatile__("cli r3;" "P0 = %0;" "JUMP (P0);"::"r"(L1_INST_SRAM) - ); - - return 0; -} - -/* These functions are just used to satisfy the linker */ -int cpu_init(void) -{ - return 0; -} - -int cleanup_before_linux(void) -{ - return 0; -} - -void icache_enable(void) -{ - unsigned int *I0, *I1; - int i, j = 0; - - if ((*pCHIPID >> 28) < 2) - return; - - /* Before enable icache, disable it first */ - icache_disable(); - I0 = (unsigned int *)ICPLB_ADDR0; - I1 = (unsigned int *)ICPLB_DATA0; - - /* make sure the locked ones go in first */ - for (i = 0; i < page_descriptor_table_size; i++) { - if (CPLB_LOCK & icplb_table[i][1]) { - debug("adding %02i %02i 0x%08x 0x%08x\n", i, j, - icplb_table[i][0], icplb_table[i][1]); - *I0++ = icplb_table[i][0]; - *I1++ = icplb_table[i][1]; - j++; - } - } - - for (i = 0; i < page_descriptor_table_size; i++) { - if (!(CPLB_LOCK & icplb_table[i][1])) { - debug("adding %02i %02i 0x%08x 0x%08x\n", i, j, - icplb_table[i][0], icplb_table[i][1]); - *I0++ = icplb_table[i][0]; - *I1++ = icplb_table[i][1]; - j++; - if (j == 16) { - break; - } - } - } - - /* Fill the rest with invalid entry */ - if (j <= 15) { - for (; j < 16; j++) { - debug("filling %i with 0", j); - *I1++ = 0x0; - } - - } - - SSYNC(); - asm(" .align 8; "); - *(unsigned int *)IMEM_CONTROL = IMC | ENICPLB; - SSYNC(); -} - -void icache_disable(void) -{ - if ((*pCHIPID >> 28) < 2) - return; - SSYNC(); - asm(" .align 8; "); - *(unsigned int *)IMEM_CONTROL &= ~(IMC | ENICPLB); - SSYNC(); -} - -int icache_status(void) -{ - unsigned int value; - value = *(unsigned int *)IMEM_CONTROL; - - if (value & (IMC | ENICPLB)) - return CACHE_ON; - else - return CACHE_OFF; -} - -void dcache_enable(void) -{ - unsigned int *I0, *I1; - unsigned int temp; - int i, j = 0; - - /* Before enable dcache, disable it first */ - dcache_disable(); - I0 = (unsigned int *)DCPLB_ADDR0; - I1 = (unsigned int *)DCPLB_DATA0; - - /* make sure the locked ones go in first */ - for (i = 0; i < page_descriptor_table_size; i++) { - if (CPLB_LOCK & dcplb_table[i][1]) { - debug("adding %02i %02i 0x%08x 0x%08x\n", i, j, - dcplb_table[i][0], dcplb_table[i][1]); - *I0++ = dcplb_table[i][0]; - *I1++ = dcplb_table[i][1]; - j++; - } else { - debug("skip %02i %02i 0x%08x 0x%08x\n", i, j, - dcplb_table[i][0], dcplb_table[i][1]); - } - } - - for (i = 0; i < page_descriptor_table_size; i++) { - if (!(CPLB_LOCK & dcplb_table[i][1])) { - debug("adding %02i %02i 0x%08x 0x%08x\n", i, j, - dcplb_table[i][0], dcplb_table[i][1]); - *I0++ = dcplb_table[i][0]; - *I1++ = dcplb_table[i][1]; - j++; - if (j == 16) { - break; - } - } - } - - /* Fill the rest with invalid entry */ - if (j <= 15) { - for (; j < 16; j++) { - debug("filling %i with 0", j); - *I1++ = 0x0; - } - } - - temp = *(unsigned int *)DMEM_CONTROL; - SSYNC(); - asm(" .align 8; "); - *(unsigned int *)DMEM_CONTROL = - ACACHE_BCACHE | ENDCPLB | PORT_PREF0 | temp; - SSYNC(); -} - -void dcache_disable(void) -{ - unsigned int *I0, *I1; - int i; - - SSYNC(); - asm(" .align 8; "); - *(unsigned int *)DMEM_CONTROL &= - ~(ACACHE_BCACHE | ENDCPLB | PORT_PREF0); - SSYNC(); - - /* after disable dcache, - * clear it so we don't confuse the next application - */ - I0 = (unsigned int *)DCPLB_ADDR0; - I1 = (unsigned int *)DCPLB_DATA0; - - for (i = 0; i < 16; i++) { - *I0++ = 0x0; - *I1++ = 0x0; - } -} - -int dcache_status(void) -{ - unsigned int value; - value = *(unsigned int *)DMEM_CONTROL; - - if (value & (ENDCPLB)) - return CACHE_ON; - else - return CACHE_OFF; -} |