[deliverable/linux.git] / arch / blackfin / kernel / cplb-nompu / cplbinit.c

/*
 * 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>

u_long icplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1];
u_long dcplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1];

#ifdef CONFIG_CPLB_SWITCH_TAB_L1
#define PDT_ATTR __attribute__((l1_data))
#else
#define PDT_ATTR
#endif

u_long ipdt_tables[NR_CPUS][MAX_SWITCH_I_CPLBS+1] PDT_ATTR;
u_long dpdt_tables[NR_CPUS][MAX_SWITCH_D_CPLBS+1] PDT_ATTR;
#ifdef CONFIG_CPLB_INFO
u_long ipdt_swapcount_tables[NR_CPUS][MAX_SWITCH_I_CPLBS] PDT_ATTR;
u_long dpdt_swapcount_tables[NR_CPUS][MAX_SWITCH_D_CPLBS] PDT_ATTR;
#endif

struct s_cplb {
	struct cplb_tab init_i;
	struct cplb_tab init_d;
	struct cplb_tab switch_i;
	struct cplb_tab switch_d;
};

#if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE)
static struct cplb_desc cplb_data[] = {
	{
		.start = 0,
		.end = SIZE_1K,
		.psize = SIZE_1K,
		.attr = INITIAL_T | SWITCH_T | I_CPLB | D_CPLB,
		.i_conf = SDRAM_OOPS,
		.d_conf = SDRAM_OOPS,
#if defined(CONFIG_DEBUG_HUNT_FOR_ZERO)
		.valid = 1,
#else
		.valid = 0,
#endif
		.name = "Zero Pointer Guard Page",
	},
	{
		.start = 0,	/* dyanmic */
		.end = 0,	/* dynamic */
		.psize = SIZE_4M,
		.attr = INITIAL_T | SWITCH_T | I_CPLB,
		.i_conf = L1_IMEMORY,
		.d_conf = 0,
		.valid = 1,
		.name = "L1 I-Memory",
	},
	{
		.start = 0,	/* dynamic */
		.end = 0,	/* dynamic */
		.psize = SIZE_4M,
		.attr = INITIAL_T | SWITCH_T | D_CPLB,
		.i_conf = 0,
		.d_conf = L1_DMEMORY,
#if ((L1_DATA_A_LENGTH > 0) || (L1_DATA_B_LENGTH > 0))
		.valid = 1,
#else
		.valid = 0,
#endif
		.name = "L1 D-Memory",
	},
	{
		.start = L2_START,
		.end = L2_START + L2_LENGTH,
		.psize = SIZE_1M,
		.attr = L2_ATTR,
		.i_conf = L2_IMEMORY,
		.d_conf = L2_DMEMORY,
		.valid = (L2_LENGTH > 0),
		.name = "L2 Memory",
	},
	{
		.start = 0,
		.end = 0,  /* dynamic */
		.psize = 0,
		.attr = INITIAL_T | SWITCH_T | I_CPLB | D_CPLB,
		.i_conf = SDRAM_IGENERIC,
		.d_conf = SDRAM_DGENERIC,
		.valid = 1,
		.name = "Kernel Memory",
	},
	{
		.start = 0, /* dynamic */
		.end = 0, /* dynamic */
		.psize = 0,
		.attr = INITIAL_T | SWITCH_T | D_CPLB,
		.i_conf = SDRAM_IGENERIC,
		.d_conf = SDRAM_DNON_CHBL,
		.valid = 1,
		.name = "uClinux MTD Memory",
	},
	{
		.start = 0, /* dynamic */
		.end = 0,   /* dynamic */
		.psize = SIZE_1M,
		.attr = INITIAL_T | SWITCH_T | D_CPLB,
		.d_conf = SDRAM_DNON_CHBL,
		.valid = 1,
		.name = "Uncached DMA Zone",
	},
	{
		.start = 0, /* dynamic */
		.end = 0, /* dynamic */
		.psize = 0,
		.attr = SWITCH_T | D_CPLB,
		.i_conf = 0, /* dynamic */
		.d_conf = 0, /* dynamic */
		.valid = 1,
		.name = "Reserved Memory",
	},
	{
		.start = ASYNC_BANK0_BASE,
		.end = ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE,
		.psize = 0,
		.attr = SWITCH_T | D_CPLB,
		.d_conf = SDRAM_EBIU,
		.valid = 1,
		.name = "Asynchronous Memory Banks",
	},
	{
		.start = BOOT_ROM_START,
		.end = BOOT_ROM_START + BOOT_ROM_LENGTH,
		.psize = SIZE_1M,
		.attr = SWITCH_T | I_CPLB | D_CPLB,
		.i_conf = SDRAM_IGENERIC,
		.d_conf = SDRAM_DGENERIC,
		.valid = 1,
		.name = "On-Chip BootROM",
	},
};

static bool __init lock_kernel_check(u32 start, u32 end)
{
	if (start >= (u32)__init_begin || end <= (u32)_stext)
		return false;

	/* This cplb block overlapped with kernel area. */
	return true;
}

static void __init
fill_cplbtab(struct cplb_tab *table,
	     unsigned long start, unsigned long end,
	     unsigned long block_size, unsigned long cplb_data)
{
	int i;

	switch (block_size) {
	case SIZE_4M:
		i = 3;
		break;
	case SIZE_1M:
		i = 2;
		break;
	case SIZE_4K:
		i = 1;
		break;
	case SIZE_1K:
	default:
		i = 0;
		break;
	}

	cplb_data = (cplb_data & ~(3 << 16)) | (i << 16);

	while ((start < end) && (table->pos < table->size)) {

		table->tab[table->pos++] = start;

		if (lock_kernel_check(start, start + block_size))
			table->tab[table->pos++] =
			    cplb_data | CPLB_LOCK | CPLB_DIRTY;
		else
			table->tab[table->pos++] = cplb_data;

		start += block_size;
	}
}

static void __init close_cplbtab(struct cplb_tab *table)
{
	while (table->pos < table->size)
		table->tab[table->pos++] = 0;
}

/* helper function */
static void __init
__fill_code_cplbtab(struct cplb_tab *t, int i, u32 a_start, u32 a_end)
{
	if (cplb_data[i].psize) {
		fill_cplbtab(t,
				cplb_data[i].start,
				cplb_data[i].end,
				cplb_data[i].psize,
				cplb_data[i].i_conf);
	} else {
#if defined(CONFIG_BFIN_ICACHE)
		if (ANOMALY_05000263 && i == SDRAM_KERN) {
			fill_cplbtab(t,
					cplb_data[i].start,
					cplb_data[i].end,
					SIZE_4M,
					cplb_data[i].i_conf);
		} else
#endif
		{
			fill_cplbtab(t,
					cplb_data[i].start,
					a_start,
					SIZE_1M,
					cplb_data[i].i_conf);
			fill_cplbtab(t,
					a_start,
					a_end,
					SIZE_4M,
					cplb_data[i].i_conf);
			fill_cplbtab(t, a_end,
					cplb_data[i].end,
					SIZE_1M,
					cplb_data[i].i_conf);
		}
	}
}

static void __init
__fill_data_cplbtab(struct cplb_tab *t, int i, u32 a_start, u32 a_end)
{
	if (cplb_data[i].psize) {
		fill_cplbtab(t,
				cplb_data[i].start,
				cplb_data[i].end,
				cplb_data[i].psize,
				cplb_data[i].d_conf);
	} else {
		fill_cplbtab(t,
				cplb_data[i].start,
				a_start, SIZE_1M,
				cplb_data[i].d_conf);
		fill_cplbtab(t, a_start,
				a_end, SIZE_4M,
				cplb_data[i].d_conf);
		fill_cplbtab(t, a_end,
				cplb_data[i].end,
				SIZE_1M,
				cplb_data[i].d_conf);
	}
}

void __init generate_cplb_tables_cpu(unsigned int cpu)
{

	u16 i, j, process;
	u32 a_start, a_end, as, ae, as_1m;

	struct cplb_tab *t_i = NULL;
	struct cplb_tab *t_d = NULL;
	struct s_cplb cplb;

	printk(KERN_INFO "NOMPU: setting up cplb tables for global access\n");

	cplb.init_i.size = CPLB_TBL_ENTRIES;
	cplb.init_d.size = CPLB_TBL_ENTRIES;
	cplb.switch_i.size = MAX_SWITCH_I_CPLBS;
	cplb.switch_d.size = MAX_SWITCH_D_CPLBS;

	cplb.init_i.pos = 0;
	cplb.init_d.pos = 0;
	cplb.switch_i.pos = 0;
	cplb.switch_d.pos = 0;

	cplb.init_i.tab = icplb_tables[cpu];
	cplb.init_d.tab = dcplb_tables[cpu];
	cplb.switch_i.tab = ipdt_tables[cpu];
	cplb.switch_d.tab = dpdt_tables[cpu];

	cplb_data[L1I_MEM].start = get_l1_code_start_cpu(cpu);
	cplb_data[L1I_MEM].end = cplb_data[L1I_MEM].start + L1_CODE_LENGTH;
	cplb_data[L1D_MEM].start = get_l1_data_a_start_cpu(cpu);
	cplb_data[L1D_MEM].end = get_l1_data_b_start_cpu(cpu) + L1_DATA_B_LENGTH;
	cplb_data[SDRAM_KERN].end = memory_end;

#ifdef CONFIG_MTD_UCLINUX
	cplb_data[SDRAM_RAM_MTD].start = memory_mtd_start;
	cplb_data[SDRAM_RAM_MTD].end = memory_mtd_start + mtd_size;
	cplb_data[SDRAM_RAM_MTD].valid = mtd_size > 0;
# if defined(CONFIG_ROMFS_FS)
	cplb_data[SDRAM_RAM_MTD].attr |= I_CPLB;

	/*
	 * The ROMFS_FS size is often not multiple of 1MB.
	 * This can cause multiple CPLB sets covering the same memory area.
	 * This will then cause multiple CPLB hit exceptions.
	 * Workaround: We ensure a contiguous memory area by extending the kernel
	 * memory section over the mtd section.
	 * For ROMFS_FS memory must be covered with ICPLBs anyways.
	 * So there is no difference between kernel and mtd memory setup.
	 */

	cplb_data[SDRAM_KERN].end = memory_mtd_start + mtd_size;;
	cplb_data[SDRAM_RAM_MTD].valid = 0;

# endif
#else
	cplb_data[SDRAM_RAM_MTD].valid = 0;
#endif

	cplb_data[SDRAM_DMAZ].start = _ramend - DMA_UNCACHED_REGION;
	cplb_data[SDRAM_DMAZ].end = _ramend;

	cplb_data[RES_MEM].start = _ramend;
	cplb_data[RES_MEM].end = physical_mem_end;

	if (reserved_mem_dcache_on)
		cplb_data[RES_MEM].d_conf = SDRAM_DGENERIC;
	else
		cplb_data[RES_MEM].d_conf = SDRAM_DNON_CHBL;

	if (reserved_mem_icache_on)
		cplb_data[RES_MEM].i_conf = SDRAM_IGENERIC;
	else
		cplb_data[RES_MEM].i_conf = SDRAM_INON_CHBL;

	for (i = ZERO_P; i < ARRAY_SIZE(cplb_data); ++i) {
		if (!cplb_data[i].valid)
			continue;

		as_1m = cplb_data[i].start % SIZE_1M;

		/* We need to make sure all sections are properly 1M aligned
		 * However between Kernel Memory and the Kernel mtd section, depending on the
		 * rootfs size, there can be overlapping memory areas.
		 */

		if (as_1m && i != L1I_MEM && i != L1D_MEM) {
#ifdef CONFIG_MTD_UCLINUX
			if (i == SDRAM_RAM_MTD) {
				if ((cplb_data[SDRAM_KERN].end + 1) > cplb_data[SDRAM_RAM_MTD].start)
					cplb_data[SDRAM_RAM_MTD].start = (cplb_data[i].start & (-2*SIZE_1M)) + SIZE_1M;
				else
					cplb_data[SDRAM_RAM_MTD].start = (cplb_data[i].start & (-2*SIZE_1M));
			} else
#endif
				printk(KERN_WARNING "Unaligned Start of %s at 0x%X\n",
				       cplb_data[i].name, cplb_data[i].start);
		}

		as = cplb_data[i].start % SIZE_4M;
		ae = cplb_data[i].end % SIZE_4M;

		if (as)
			a_start = cplb_data[i].start + (SIZE_4M - (as));
		else
			a_start = cplb_data[i].start;

		a_end = cplb_data[i].end - ae;

		for (j = INITIAL_T; j <= SWITCH_T; j++) {

			switch (j) {
			case INITIAL_T:
				if (cplb_data[i].attr & INITIAL_T) {
					t_i = &cplb.init_i;
					t_d = &cplb.init_d;
					process = 1;
				} else
					process = 0;
				break;
			case SWITCH_T:
				if (cplb_data[i].attr & SWITCH_T) {
					t_i = &cplb.switch_i;
					t_d = &cplb.switch_d;
					process = 1;
				} else
					process = 0;
				break;
			default:
					process = 0;
				break;
			}

			if (!process)
				continue;
			if (cplb_data[i].attr & I_CPLB)
				__fill_code_cplbtab(t_i, i, a_start, a_end);

			if (cplb_data[i].attr & D_CPLB)
				__fill_data_cplbtab(t_d, i, a_start, a_end);
		}
	}

	/* make sure we locked the kernel start */
	BUG_ON(cplb.init_i.pos < 2 + cplb_data[ZERO_P].valid);
	BUG_ON(cplb.init_d.pos < 1 + cplb_data[ZERO_P].valid + cplb_data[L1D_MEM].valid);

	/* make sure we didnt overflow the table */
	BUG_ON(cplb.init_i.size < cplb.init_i.pos);
	BUG_ON(cplb.init_d.size < cplb.init_d.pos);
	BUG_ON(cplb.switch_i.size < cplb.switch_i.pos);
	BUG_ON(cplb.switch_d.size < cplb.switch_d.pos);

	/* close tables */
	close_cplbtab(&cplb.init_i);
	close_cplbtab(&cplb.init_d);

	cplb.init_i.tab[cplb.init_i.pos] = -1;
	cplb.init_d.tab[cplb.init_d.pos] = -1;
	cplb.switch_i.tab[cplb.switch_i.pos] = -1;
	cplb.switch_d.tab[cplb.switch_d.pos] = -1;

}

#endif
Commit	Line	Data
29440a2b BS	1	/*
	2	* Blackfin CPLB initialization
	3	*
	4	* Copyright 2004-2007 Analog Devices Inc.
	5	*
	6	* Bugs: Enter bugs at http://blackfin.uclinux.org/
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, see the file COPYING, or write
	20	* to the Free Software Foundation, Inc.,
	21	* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	22	*/
38316382	23
29440a2b BS	24	#include <linux/module.h>
	25
	26	#include <asm/blackfin.h>
04be80ef	27	#include <asm/cacheflush.h>
3bebca2d	28	#include <asm/cplb.h>
29440a2b BS	29	#include <asm/cplbinit.h>
29440a2b BS	30
b8a98989 GY	31	u_long icplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1];
b8a98989 GY	32	u_long dcplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1];
29440a2b BS	33
29440a2b BS	34	#ifdef CONFIG_CPLB_SWITCH_TAB_L1
b8a98989	35	#define PDT_ATTR __attribute__((l1_data))
29440a2b	36	#else
b8a98989	37	#define PDT_ATTR
81a487a5	38	#endif
29440a2b	39
b8a98989 GY	40	u_long ipdt_tables[NR_CPUS][MAX_SWITCH_I_CPLBS+1] PDT_ATTR;
b8a98989 GY	41	u_long dpdt_tables[NR_CPUS][MAX_SWITCH_D_CPLBS+1] PDT_ATTR;
29440a2b	42	#ifdef CONFIG_CPLB_INFO
b8a98989 GY	43	u_long ipdt_swapcount_tables[NR_CPUS][MAX_SWITCH_I_CPLBS] PDT_ATTR;
b8a98989 GY	44	u_long dpdt_swapcount_tables[NR_CPUS][MAX_SWITCH_D_CPLBS] PDT_ATTR;
81a487a5	45	#endif
29440a2b BS	46
	47	struct s_cplb {
	48	struct cplb_tab init_i;
	49	struct cplb_tab init_d;
	50	struct cplb_tab switch_i;
	51	struct cplb_tab switch_d;
	52	};
	53
3bebca2d	54	#if defined(CONFIG_BFIN_DCACHE) \|\| defined(CONFIG_BFIN_ICACHE)
29440a2b BS	55	static struct cplb_desc cplb_data[] = {
	56	{
	57	.start = 0,
	58	.end = SIZE_1K,
	59	.psize = SIZE_1K,
	60	.attr = INITIAL_T \| SWITCH_T \| I_CPLB \| D_CPLB,
	61	.i_conf = SDRAM_OOPS,
	62	.d_conf = SDRAM_OOPS,
	63	#if defined(CONFIG_DEBUG_HUNT_FOR_ZERO)
	64	.valid = 1,
	65	#else
	66	.valid = 0,
	67	#endif
c3a9f435	68	.name = "Zero Pointer Guard Page",
29440a2b BS	69	},
29440a2b BS	70	{
b8a98989 GY	71	.start = 0, /* dyanmic */
b8a98989 GY	72	.end = 0, /* dynamic */
29440a2b BS	73	.psize = SIZE_4M,
	74	.attr = INITIAL_T \| SWITCH_T \| I_CPLB,
	75	.i_conf = L1_IMEMORY,
	76	.d_conf = 0,
	77	.valid = 1,
	78	.name = "L1 I-Memory",
	79	},
	80	{
b8a98989 GY	81	.start = 0, /* dynamic */
b8a98989 GY	82	.end = 0, /* dynamic */
29440a2b BS	83	.psize = SIZE_4M,
	84	.attr = INITIAL_T \| SWITCH_T \| D_CPLB,
	85	.i_conf = 0,
	86	.d_conf = L1_DMEMORY,
	87	#if ((L1_DATA_A_LENGTH > 0) \|\| (L1_DATA_B_LENGTH > 0))
	88	.valid = 1,
	89	#else
	90	.valid = 0,
	91	#endif
	92	.name = "L1 D-Memory",
	93	},
b8a98989 GY	94	{
	95	.start = L2_START,
	96	.end = L2_START + L2_LENGTH,
	97	.psize = SIZE_1M,
	98	.attr = L2_ATTR,
	99	.i_conf = L2_IMEMORY,
	100	.d_conf = L2_DMEMORY,
	101	.valid = (L2_LENGTH > 0),
	102	.name = "L2 Memory",
	103	},
29440a2b BS	104	{
	105	.start = 0,
	106	.end = 0, /* dynamic */
	107	.psize = 0,
	108	.attr = INITIAL_T \| SWITCH_T \| I_CPLB \| D_CPLB,
c3a9f435 MF	109	.i_conf = SDRAM_IGENERIC,
c3a9f435 MF	110	.d_conf = SDRAM_DGENERIC,
29440a2b	111	.valid = 1,
c3a9f435	112	.name = "Kernel Memory",
29440a2b BS	113	},
	114	{
	115	.start = 0, /* dynamic */
	116	.end = 0, /* dynamic */
	117	.psize = 0,
	118	.attr = INITIAL_T \| SWITCH_T \| D_CPLB,
c3a9f435 MF	119	.i_conf = SDRAM_IGENERIC,
c3a9f435 MF	120	.d_conf = SDRAM_DNON_CHBL,
29440a2b	121	.valid = 1,
c3a9f435	122	.name = "uClinux MTD Memory",
29440a2b BS	123	},
	124	{
	125	.start = 0, /* dynamic */
	126	.end = 0, /* dynamic */
	127	.psize = SIZE_1M,
	128	.attr = INITIAL_T \| SWITCH_T \| D_CPLB,
	129	.d_conf = SDRAM_DNON_CHBL,
	130	.valid = 1,
c3a9f435	131	.name = "Uncached DMA Zone",
29440a2b BS	132	},
	133	{
	134	.start = 0, /* dynamic */
	135	.end = 0, /* dynamic */
	136	.psize = 0,
	137	.attr = SWITCH_T \| D_CPLB,
	138	.i_conf = 0, /* dynamic */
	139	.d_conf = 0, /* dynamic */
	140	.valid = 1,
c3a9f435	141	.name = "Reserved Memory",
29440a2b BS	142	},
	143	{
	144	.start = ASYNC_BANK0_BASE,
	145	.end = ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE,
	146	.psize = 0,
	147	.attr = SWITCH_T \| D_CPLB,
	148	.d_conf = SDRAM_EBIU,
	149	.valid = 1,
c3a9f435	150	.name = "Asynchronous Memory Banks",
29440a2b	151	},
c3a9f435 MF	152	{
	153	.start = BOOT_ROM_START,
	154	.end = BOOT_ROM_START + BOOT_ROM_LENGTH,
	155	.psize = SIZE_1M,
	156	.attr = SWITCH_T \| I_CPLB \| D_CPLB,
	157	.i_conf = SDRAM_IGENERIC,
	158	.d_conf = SDRAM_DGENERIC,
	159	.valid = 1,
	160	.name = "On-Chip BootROM",
	161	},
29440a2b BS	162	};
29440a2b BS	163
4c5b8a64	164	static bool __init lock_kernel_check(u32 start, u32 end)
29440a2b	165	{
05a717fb	166	if (start >= (u32)__init_begin \|\| end <= (u32)_stext)
4c5b8a64	167	return false;
6776cf44 GY	168
6776cf44 GY	169	/* This cplb block overlapped with kernel area. */
4c5b8a64	170	return true;
29440a2b BS	171	}
29440a2b BS	172
38316382	173	static void __init
29440a2b BS	174	fill_cplbtab(struct cplb_tab *table,
	175	unsigned long start, unsigned long end,
	176	unsigned long block_size, unsigned long cplb_data)
	177	{
	178	int i;
	179
	180	switch (block_size) {
	181	case SIZE_4M:
	182	i = 3;
	183	break;
	184	case SIZE_1M:
	185	i = 2;
	186	break;
	187	case SIZE_4K:
	188	i = 1;
	189	break;
	190	case SIZE_1K:
	191	default:
	192	i = 0;
	193	break;
	194	}
	195
	196	cplb_data = (cplb_data & ~(3 << 16)) \| (i << 16);
	197
	198	while ((start < end) && (table->pos < table->size)) {
	199
	200	table->tab[table->pos++] = start;
	201
4c5b8a64	202	if (lock_kernel_check(start, start + block_size))
29440a2b BS	203	table->tab[table->pos++] =
	204	cplb_data \| CPLB_LOCK \| CPLB_DIRTY;
	205	else
	206	table->tab[table->pos++] = cplb_data;
	207
	208	start += block_size;
	209	}
29440a2b BS	210	}
29440a2b BS	211
38316382	212	static void __init close_cplbtab(struct cplb_tab *table)
29440a2b	213	{
38316382	214	while (table->pos < table->size)
29440a2b	215	table->tab[table->pos++] = 0;
29440a2b BS	216	}
	217
	218	/* helper function */
8d0a6003 BW	219	static void __init
8d0a6003 BW	220	__fill_code_cplbtab(struct cplb_tab *t, int i, u32 a_start, u32 a_end)
29440a2b BS	221	{
	222	if (cplb_data[i].psize) {
	223	fill_cplbtab(t,
	224	cplb_data[i].start,
	225	cplb_data[i].end,
	226	cplb_data[i].psize,
	227	cplb_data[i].i_conf);
	228	} else {
3bebca2d	229	#if defined(CONFIG_BFIN_ICACHE)
1aafd909	230	if (ANOMALY_05000263 && i == SDRAM_KERN) {
29440a2b BS	231	fill_cplbtab(t,
	232	cplb_data[i].start,
	233	cplb_data[i].end,
	234	SIZE_4M,
	235	cplb_data[i].i_conf);
	236	} else
	237	#endif
	238	{
	239	fill_cplbtab(t,
	240	cplb_data[i].start,
	241	a_start,
	242	SIZE_1M,
	243	cplb_data[i].i_conf);
	244	fill_cplbtab(t,
	245	a_start,
	246	a_end,
	247	SIZE_4M,
	248	cplb_data[i].i_conf);
	249	fill_cplbtab(t, a_end,
	250	cplb_data[i].end,
	251	SIZE_1M,
	252	cplb_data[i].i_conf);
	253	}
	254	}
	255	}
	256
8d0a6003 BW	257	static void __init
8d0a6003 BW	258	__fill_data_cplbtab(struct cplb_tab *t, int i, u32 a_start, u32 a_end)
29440a2b BS	259	{
	260	if (cplb_data[i].psize) {
	261	fill_cplbtab(t,
	262	cplb_data[i].start,
	263	cplb_data[i].end,
	264	cplb_data[i].psize,
	265	cplb_data[i].d_conf);
	266	} else {
	267	fill_cplbtab(t,
	268	cplb_data[i].start,
	269	a_start, SIZE_1M,
	270	cplb_data[i].d_conf);
	271	fill_cplbtab(t, a_start,
	272	a_end, SIZE_4M,
	273	cplb_data[i].d_conf);
	274	fill_cplbtab(t, a_end,
	275	cplb_data[i].end,
	276	SIZE_1M,
	277	cplb_data[i].d_conf);
	278	}
	279	}
	280
b8a98989	281	void __init generate_cplb_tables_cpu(unsigned int cpu)
29440a2b BS	282	{
	283
	284	u16 i, j, process;
	285	u32 a_start, a_end, as, ae, as_1m;
	286
	287	struct cplb_tab *t_i = NULL;
	288	struct cplb_tab *t_d = NULL;
	289	struct s_cplb cplb;
	290
8cab0288 MF	291	printk(KERN_INFO "NOMPU: setting up cplb tables for global access\n");
8cab0288 MF	292
b8a98989 GY	293	cplb.init_i.size = CPLB_TBL_ENTRIES;
b8a98989 GY	294	cplb.init_d.size = CPLB_TBL_ENTRIES;
29440a2b BS	295	cplb.switch_i.size = MAX_SWITCH_I_CPLBS;
	296	cplb.switch_d.size = MAX_SWITCH_D_CPLBS;
	297
	298	cplb.init_i.pos = 0;
	299	cplb.init_d.pos = 0;
	300	cplb.switch_i.pos = 0;
	301	cplb.switch_d.pos = 0;
	302
b8a98989 GY	303	cplb.init_i.tab = icplb_tables[cpu];
	304	cplb.init_d.tab = dcplb_tables[cpu];
	305	cplb.switch_i.tab = ipdt_tables[cpu];
	306	cplb.switch_d.tab = dpdt_tables[cpu];
29440a2b	307
b8a98989 GY	308	cplb_data[L1I_MEM].start = get_l1_code_start_cpu(cpu);
	309	cplb_data[L1I_MEM].end = cplb_data[L1I_MEM].start + L1_CODE_LENGTH;
	310	cplb_data[L1D_MEM].start = get_l1_data_a_start_cpu(cpu);
	311	cplb_data[L1D_MEM].end = get_l1_data_b_start_cpu(cpu) + L1_DATA_B_LENGTH;
29440a2b BS	312	cplb_data[SDRAM_KERN].end = memory_end;
	313
	314	#ifdef CONFIG_MTD_UCLINUX
	315	cplb_data[SDRAM_RAM_MTD].start = memory_mtd_start;
	316	cplb_data[SDRAM_RAM_MTD].end = memory_mtd_start + mtd_size;
	317	cplb_data[SDRAM_RAM_MTD].valid = mtd_size > 0;
	318	# if defined(CONFIG_ROMFS_FS)
	319	cplb_data[SDRAM_RAM_MTD].attr \|= I_CPLB;
	320
	321	/*
	322	* The ROMFS_FS size is often not multiple of 1MB.
	323	* This can cause multiple CPLB sets covering the same memory area.
	324	* This will then cause multiple CPLB hit exceptions.
	325	* Workaround: We ensure a contiguous memory area by extending the kernel
	326	* memory section over the mtd section.
	327	* For ROMFS_FS memory must be covered with ICPLBs anyways.
	328	* So there is no difference between kernel and mtd memory setup.
	329	*/
	330
	331	cplb_data[SDRAM_KERN].end = memory_mtd_start + mtd_size;;
	332	cplb_data[SDRAM_RAM_MTD].valid = 0;
	333
	334	# endif
	335	#else
	336	cplb_data[SDRAM_RAM_MTD].valid = 0;
	337	#endif
	338
	339	cplb_data[SDRAM_DMAZ].start = _ramend - DMA_UNCACHED_REGION;
	340	cplb_data[SDRAM_DMAZ].end = _ramend;
	341
	342	cplb_data[RES_MEM].start = _ramend;
	343	cplb_data[RES_MEM].end = physical_mem_end;
	344
	345	if (reserved_mem_dcache_on)
	346	cplb_data[RES_MEM].d_conf = SDRAM_DGENERIC;
	347	else
	348	cplb_data[RES_MEM].d_conf = SDRAM_DNON_CHBL;
	349
	350	if (reserved_mem_icache_on)
	351	cplb_data[RES_MEM].i_conf = SDRAM_IGENERIC;
	352	else
	353	cplb_data[RES_MEM].i_conf = SDRAM_INON_CHBL;
	354
c3a9f435	355	for (i = ZERO_P; i < ARRAY_SIZE(cplb_data); ++i) {
29440a2b BS	356	if (!cplb_data[i].valid)
	357	continue;
	358
	359	as_1m = cplb_data[i].start % SIZE_1M;
	360
	361	/* We need to make sure all sections are properly 1M aligned
	362	* However between Kernel Memory and the Kernel mtd section, depending on the
	363	* rootfs size, there can be overlapping memory areas.
	364	*/
	365
	366	if (as_1m && i != L1I_MEM && i != L1D_MEM) {
	367	#ifdef CONFIG_MTD_UCLINUX
	368	if (i == SDRAM_RAM_MTD) {
	369	if ((cplb_data[SDRAM_KERN].end + 1) > cplb_data[SDRAM_RAM_MTD].start)
	370	cplb_data[SDRAM_RAM_MTD].start = (cplb_data[i].start & (-2*SIZE_1M)) + SIZE_1M;
	371	else
	372	cplb_data[SDRAM_RAM_MTD].start = (cplb_data[i].start & (-2*SIZE_1M));
	373	} else
	374	#endif
	375	printk(KERN_WARNING "Unaligned Start of %s at 0x%X\n",
	376	cplb_data[i].name, cplb_data[i].start);
	377	}
	378
	379	as = cplb_data[i].start % SIZE_4M;
	380	ae = cplb_data[i].end % SIZE_4M;
	381
	382	if (as)
	383	a_start = cplb_data[i].start + (SIZE_4M - (as));
	384	else
	385	a_start = cplb_data[i].start;
	386
	387	a_end = cplb_data[i].end - ae;
	388
	389	for (j = INITIAL_T; j <= SWITCH_T; j++) {
	390
	391	switch (j) {
	392	case INITIAL_T:
	393	if (cplb_data[i].attr & INITIAL_T) {
	394	t_i = &cplb.init_i;
	395	t_d = &cplb.init_d;
	396	process = 1;
	397	} else
	398	process = 0;
	399	break;
	400	case SWITCH_T:
	401	if (cplb_data[i].attr & SWITCH_T) {
	402	t_i = &cplb.switch_i;
	403	t_d = &cplb.switch_d;
	404	process = 1;
	405	} else
	406	process = 0;
	407	break;
	408	default:
	409	process = 0;
	410	break;
	411	}
	412
	413	if (!process)
	414	continue;
	415	if (cplb_data[i].attr & I_CPLB)
	416	__fill_code_cplbtab(t_i, i, a_start, a_end);
	417
	418	if (cplb_data[i].attr & D_CPLB)
	419	__fill_data_cplbtab(t_d, i, a_start, a_end);
420	}
421	}
422
dce783c5 MF	423	/* make sure we locked the kernel start */
	424	BUG_ON(cplb.init_i.pos < 2 + cplb_data[ZERO_P].valid);
	425	BUG_ON(cplb.init_d.pos < 1 + cplb_data[ZERO_P].valid + cplb_data[L1D_MEM].valid);
	426
	427	/* make sure we didnt overflow the table */
2eddbada MF	428	BUG_ON(cplb.init_i.size < cplb.init_i.pos);
	429	BUG_ON(cplb.init_d.size < cplb.init_d.pos);
	430	BUG_ON(cplb.switch_i.size < cplb.switch_i.pos);
	431	BUG_ON(cplb.switch_d.size < cplb.switch_d.pos);
29440a2b	432
dce783c5	433	/* close tables */
29440a2b BS	434	close_cplbtab(&cplb.init_i);
	435	close_cplbtab(&cplb.init_d);
	436
	437	cplb.init_i.tab[cplb.init_i.pos] = -1;
	438	cplb.init_d.tab[cplb.init_d.pos] = -1;
	439	cplb.switch_i.tab[cplb.switch_i.pos] = -1;
	440	cplb.switch_d.tab[cplb.switch_d.pos] = -1;
	441
	442	}
29440a2b	443
38316382	444	#endif