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/*
* Blackfin CPLB initialization
*
* Copyright 2004-2007 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* 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, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/module.h>
#include <asm/blackfin.h>
#include <asm/cacheflush.h>
#include <asm/cplb.h>
#include <asm/cplbinit.h>
#include <asm/mem_map.h>
struct cplb_entry icplb_tbl[NR_CPUS][MAX_CPLBS] PDT_ATTR;
struct cplb_entry dcplb_tbl[NR_CPUS][MAX_CPLBS] PDT_ATTR;
int first_switched_icplb PDT_ATTR;
int first_switched_dcplb PDT_ATTR;
struct cplb_boundary dcplb_bounds[9] PDT_ATTR;
struct cplb_boundary icplb_bounds[7] PDT_ATTR;
int icplb_nr_bounds PDT_ATTR;
int dcplb_nr_bounds PDT_ATTR;
void __init generate_cplb_tables_cpu(unsigned int cpu)
{
int i_d, i_i;
unsigned long addr;
struct cplb_entry *d_tbl = dcplb_tbl[cpu];
struct cplb_entry *i_tbl = icplb_tbl[cpu];
printk(KERN_INFO "NOMPU: setting up cplb tables\n");
i_d = i_i = 0;
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
/* Set up the zero page. */
d_tbl[i_d].addr = 0;
d_tbl[i_d++].data = SDRAM_OOPS | PAGE_SIZE_1KB;
i_tbl[i_i].addr = 0;
i_tbl[i_i++].data = SDRAM_OOPS | PAGE_SIZE_1KB;
#endif
/* Cover kernel memory with 4M pages. */
addr = 0;
for (; addr < memory_start; addr += 4 * 1024 * 1024) {
d_tbl[i_d].addr = addr;
d_tbl[i_d++].data = SDRAM_DGENERIC | PAGE_SIZE_4MB;
i_tbl[i_i].addr = addr;
i_tbl[i_i++].data = SDRAM_IGENERIC | PAGE_SIZE_4MB;
}
/* Cover L1 memory. One 4M area for code and data each is enough. */
if (L1_DATA_A_LENGTH || L1_DATA_B_LENGTH) {
d_tbl[i_d].addr = L1_DATA_A_START;
d_tbl[i_d++].data = L1_DMEMORY | PAGE_SIZE_4MB;
}
i_tbl[i_i].addr = L1_CODE_START;
i_tbl[i_i++].data = L1_IMEMORY | PAGE_SIZE_4MB;
first_switched_dcplb = i_d;
first_switched_icplb = i_i;
BUG_ON(first_switched_dcplb > MAX_CPLBS);
BUG_ON(first_switched_icplb > MAX_CPLBS);
while (i_d < MAX_CPLBS)
d_tbl[i_d++].data = 0;
while (i_i < MAX_CPLBS)
i_tbl[i_i++].data = 0;
}
void __init generate_cplb_tables_all(void)
{
int i_d, i_i;
i_d = 0;
/* Normal RAM, including MTD FS. */
#ifdef CONFIG_MTD_UCLINUX
dcplb_bounds[i_d].eaddr = memory_mtd_start + mtd_size;
#else
dcplb_bounds[i_d].eaddr = memory_end;
#endif
dcplb_bounds[i_d++].data = SDRAM_DGENERIC;
/* DMA uncached region. */
if (DMA_UNCACHED_REGION) {
dcplb_bounds[i_d].eaddr = _ramend;
dcplb_bounds[i_d++].data = SDRAM_DNON_CHBL;
}
if (_ramend != physical_mem_end) {
/* Reserved memory. */
dcplb_bounds[i_d].eaddr = physical_mem_end;
dcplb_bounds[i_d++].data = (reserved_mem_dcache_on ?
SDRAM_DGENERIC : SDRAM_DNON_CHBL);
}
/* Addressing hole up to the async bank. */
dcplb_bounds[i_d].eaddr = ASYNC_BANK0_BASE;
dcplb_bounds[i_d++].data = 0;
/* ASYNC banks. */
dcplb_bounds[i_d].eaddr = ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE;
dcplb_bounds[i_d++].data = SDRAM_EBIU;
/* Addressing hole up to BootROM. */
dcplb_bounds[i_d].eaddr = BOOT_ROM_START;
dcplb_bounds[i_d++].data = 0;
/* BootROM -- largest one should be less than 1 meg. */
dcplb_bounds[i_d].eaddr = BOOT_ROM_START + (1 * 1024 * 1024);
dcplb_bounds[i_d++].data = SDRAM_DGENERIC;
if (L2_LENGTH) {
/* Addressing hole up to L2 SRAM. */
dcplb_bounds[i_d].eaddr = L2_START;
dcplb_bounds[i_d++].data = 0;
/* L2 SRAM. */
dcplb_bounds[i_d].eaddr = L2_START + L2_LENGTH;
dcplb_bounds[i_d++].data = L2_DMEMORY;
}
dcplb_nr_bounds = i_d;
BUG_ON(dcplb_nr_bounds > ARRAY_SIZE(dcplb_bounds));
i_i = 0;
/* Normal RAM, including MTD FS. */
#ifdef CONFIG_MTD_UCLINUX
icplb_bounds[i_i].eaddr = memory_mtd_start + mtd_size;
#else
icplb_bounds[i_i].eaddr = memory_end;
#endif
icplb_bounds[i_i++].data = SDRAM_IGENERIC;
/* DMA uncached region. */
if (DMA_UNCACHED_REGION) {
icplb_bounds[i_i].eaddr = _ramend;
icplb_bounds[i_i++].data = 0;
}
if (_ramend != physical_mem_end) {
/* Reserved memory. */
icplb_bounds[i_i].eaddr = physical_mem_end;
icplb_bounds[i_i++].data = (reserved_mem_icache_on ?
SDRAM_IGENERIC : SDRAM_INON_CHBL);
}
/* Addressing hole up to BootROM. */
icplb_bounds[i_i].eaddr = BOOT_ROM_START;
icplb_bounds[i_i++].data = 0;
/* BootROM -- largest one should be less than 1 meg. */
icplb_bounds[i_i].eaddr = BOOT_ROM_START + (1 * 1024 * 1024);
icplb_bounds[i_i++].data = SDRAM_IGENERIC;
if (L2_LENGTH) {
/* Addressing hole up to L2 SRAM, including the async bank. */
icplb_bounds[i_i].eaddr = L2_START;
icplb_bounds[i_i++].data = 0;
/* L2 SRAM. */
icplb_bounds[i_i].eaddr = L2_START + L2_LENGTH;
icplb_bounds[i_i++].data = L2_IMEMORY;
}
icplb_nr_bounds = i_i;
BUG_ON(icplb_nr_bounds > ARRAY_SIZE(icplb_bounds));
}
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