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Diffstat (limited to 'src/arch/armv7/lib/cache_v7.c')
| -rw-r--r-- | src/arch/armv7/lib/cache_v7.c | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/src/arch/armv7/lib/cache_v7.c b/src/arch/armv7/lib/cache_v7.c deleted file mode 100644 index 1764351115..0000000000 --- a/src/arch/armv7/lib/cache_v7.c +++ /dev/null @@ -1,339 +0,0 @@ -/* - * (C) Copyright 2010 - * Texas Instruments, <www.ti.com> - * Aneesh V <aneesh@ti.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 - */ -#include <armv7.h> -#include <common.h> -#include <system.h> -#include <utils.h> -#include <console/console.h> - -#define ARMV7_DCACHE_INVAL_ALL 1 -#define ARMV7_DCACHE_CLEAN_INVAL_ALL 2 -#define ARMV7_DCACHE_INVAL_RANGE 3 -#define ARMV7_DCACHE_CLEAN_INVAL_RANGE 4 - -/* - * Write the level and type you want to Cache Size Selection Register(CSSELR) - * to get size details from Current Cache Size ID Register(CCSIDR) - */ -static void set_csselr(u32 level, u32 type) -{ u32 csselr = level << 1 | type; - - /* Write to Cache Size Selection Register(CSSELR) */ - asm volatile ("mcr p15, 2, %0, c0, c0, 0" : : "r" (csselr)); -} - -static u32 get_ccsidr(void) -{ - u32 ccsidr; - - /* Read current CP15 Cache Size ID Register */ - asm volatile ("mrc p15, 1, %0, c0, c0, 0" : "=r" (ccsidr)); - return ccsidr; -} - -static u32 get_clidr(void) -{ - u32 clidr; - - /* Read current CP15 Cache Level ID Register */ - asm volatile ("mrc p15,1,%0,c0,c0,1" : "=r" (clidr)); - return clidr; -} - -static void v7_inval_dcache_level_setway(u32 level, u32 num_sets, - u32 num_ways, u32 way_shift, - u32 log2_line_len) -{ - int way, set, setway; - - /* - * For optimal assembly code: - * a. count down - * b. have bigger loop inside - */ - for (way = num_ways - 1; way >= 0 ; way--) { - for (set = num_sets - 1; set >= 0; set--) { - setway = (level << 1) | (set << log2_line_len) | - (way << way_shift); - /* Invalidate data/unified cache line by set/way */ - asm volatile (" mcr p15, 0, %0, c7, c6, 2" - : : "r" (setway)); - } - } - /* DSB to make sure the operation is complete */ - CP15DSB; -} - -static void v7_clean_inval_dcache_level_setway(u32 level, u32 num_sets, - u32 num_ways, u32 way_shift, - u32 log2_line_len) -{ - int way, set, setway; - - /* - * For optimal assembly code: - * a. count down - * b. have bigger loop inside - */ - for (way = num_ways - 1; way >= 0 ; way--) { - for (set = num_sets - 1; set >= 0; set--) { - setway = (level << 1) | (set << log2_line_len) | - (way << way_shift); - /* - * Clean & Invalidate data/unified - * cache line by set/way - */ - asm volatile (" mcr p15, 0, %0, c7, c14, 2" - : : "r" (setway)); - } - } - /* DSB to make sure the operation is complete */ - CP15DSB; -} - -static void v7_maint_dcache_level_setway(u32 level, u32 operation) -{ - u32 ccsidr; - u32 num_sets, num_ways, log2_line_len, log2_num_ways; - u32 way_shift; - - set_csselr(level, ARMV7_CSSELR_IND_DATA_UNIFIED); - - ccsidr = get_ccsidr(); - - log2_line_len = ((ccsidr & CCSIDR_LINE_SIZE_MASK) >> - CCSIDR_LINE_SIZE_OFFSET) + 2; - /* Converting from words to bytes */ - log2_line_len += 2; - - num_ways = ((ccsidr & CCSIDR_ASSOCIATIVITY_MASK) >> - CCSIDR_ASSOCIATIVITY_OFFSET) + 1; - num_sets = ((ccsidr & CCSIDR_NUM_SETS_MASK) >> - CCSIDR_NUM_SETS_OFFSET) + 1; - /* - * According to ARMv7 ARM number of sets and number of ways need - * not be a power of 2 - */ - log2_num_ways = log_2_n_round_up(num_ways); - - way_shift = (32 - log2_num_ways); - if (operation == ARMV7_DCACHE_INVAL_ALL) { - v7_inval_dcache_level_setway(level, num_sets, num_ways, - way_shift, log2_line_len); - } else if (operation == ARMV7_DCACHE_CLEAN_INVAL_ALL) { - v7_clean_inval_dcache_level_setway(level, num_sets, num_ways, - way_shift, log2_line_len); - } -} - -static void v7_maint_dcache_all(u32 operation) -{ - u32 level, cache_type, level_start_bit = 0; - - u32 clidr = get_clidr(); - - for (level = 0; level < 7; level++) { - cache_type = (clidr >> level_start_bit) & 0x7; - if ((cache_type == ARMV7_CLIDR_CTYPE_DATA_ONLY) || - (cache_type == ARMV7_CLIDR_CTYPE_INSTRUCTION_DATA) || - (cache_type == ARMV7_CLIDR_CTYPE_UNIFIED)) - v7_maint_dcache_level_setway(level, operation); - level_start_bit += 3; - } -} - -static void v7_dcache_clean_inval_range(u32 start, - u32 stop, u32 line_len) -{ - u32 mva; - - /* Align start to cache line boundary */ - start &= ~(line_len - 1); - for (mva = start; mva < stop; mva = mva + line_len) { - /* DCCIMVAC - Clean & Invalidate data cache by MVA to PoC */ - asm volatile ("mcr p15, 0, %0, c7, c14, 1" : : "r" (mva)); - } -} - -static void v7_dcache_inval_range(u32 start, u32 stop, u32 line_len) -{ - u32 mva; - - /* - * If start address is not aligned to cache-line do not - * invalidate the first cache-line - */ - if (start & (line_len - 1)) { - printk(BIOS_ERR, "%s - start address is not aligned - 0x%08x\n", - __func__, start); - /* move to next cache line */ - start = (start + line_len - 1) & ~(line_len - 1); - } - - /* - * If stop address is not aligned to cache-line do not - * invalidate the last cache-line - */ - if (stop & (line_len - 1)) { - printk(BIOS_ERR, "%s - stop address is not aligned - 0x%08x\n", - __func__, stop); - /* align to the beginning of this cache line */ - stop &= ~(line_len - 1); - } - - for (mva = start; mva < stop; mva = mva + line_len) { - /* DCIMVAC - Invalidate data cache by MVA to PoC */ - asm volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" (mva)); - } -} - -static void v7_dcache_maint_range(u32 start, u32 stop, u32 range_op) -{ - u32 line_len = dcache_get_line_size(); - - switch (range_op) { - case ARMV7_DCACHE_CLEAN_INVAL_RANGE: - v7_dcache_clean_inval_range(start, stop, line_len); - break; - case ARMV7_DCACHE_INVAL_RANGE: - v7_dcache_inval_range(start, stop, line_len); - break; - } - - /* DSB to make sure the operation is complete */ - CP15DSB; -} - -/* Invalidate TLB */ -void v7_inval_tlb(void) -{ - /* Invalidate entire unified TLB */ - asm volatile ("mcr p15, 0, %0, c8, c7, 0" : : "r" (0)); - /* Invalidate entire data TLB */ - asm volatile ("mcr p15, 0, %0, c8, c6, 0" : : "r" (0)); - /* Invalidate entire instruction TLB */ - asm volatile ("mcr p15, 0, %0, c8, c5, 0" : : "r" (0)); - /* Full system DSB - make sure that the invalidation is complete */ - CP15DSB; - /* Full system ISB - make sure the instruction stream sees it */ - CP15ISB; -} - -unsigned long dcache_get_line_size(void) -{ - u32 line_len, ccsidr; - - ccsidr = get_ccsidr(); - line_len = ((ccsidr & CCSIDR_LINE_SIZE_MASK) >> - CCSIDR_LINE_SIZE_OFFSET) + 2; - /* Converting from words to bytes */ - line_len += 2; - /* converting from log2(linelen) to linelen */ - line_len = 1 << line_len; - - return line_len; -} - -void invalidate_dcache_all(void) -{ - v7_maint_dcache_all(ARMV7_DCACHE_INVAL_ALL); - - v7_outer_cache_inval_all(); -} - -/* - * Performs a clean & invalidation of the entire data cache - * at all levels - */ -void flush_dcache_all(void) -{ - v7_maint_dcache_all(ARMV7_DCACHE_CLEAN_INVAL_ALL); - - v7_outer_cache_flush_all(); -} - -/* - * Invalidates range in all levels of D-cache/unified cache used: - * Affects the range [start, stop - 1] - */ -void invalidate_dcache_range(unsigned long start, unsigned long stop) -{ - - v7_dcache_maint_range(start, stop, ARMV7_DCACHE_INVAL_RANGE); - - v7_outer_cache_inval_range(start, stop); -} - -/* - * Flush range(clean & invalidate) from all levels of D-cache/unified - * cache used: - * Affects the range [start, stop - 1] - */ -void flush_dcache_range(unsigned long start, unsigned long stop) -{ - v7_dcache_maint_range(start, stop, ARMV7_DCACHE_CLEAN_INVAL_RANGE); - - v7_outer_cache_flush_range(start, stop); -} - -void arm_init_before_mmu(void) -{ - v7_outer_cache_enable(); - invalidate_dcache_all(); - v7_inval_tlb(); -} - -void mmu_page_table_flush(unsigned long start, unsigned long stop) -{ - flush_dcache_range(start, stop); - v7_inval_tlb(); -} - -/* - * Flush range from all levels of d-cache/unified-cache used: - * Affects the range [start, start + size - 1] - */ -void flush_cache(unsigned long start, unsigned long size) -{ - flush_dcache_range(start, start + size); -} - -/* Invalidate entire I-cache and branch predictor array */ -void invalidate_icache_all(void) -{ - /* - * Invalidate all instruction caches to PoU. - * Also flushes branch target cache. - */ - asm volatile ("mcr p15, 0, %0, c7, c5, 0" : : "r" (0)); - - /* Invalidate entire branch predictor array */ - asm volatile ("mcr p15, 0, %0, c7, c5, 6" : : "r" (0)); - - /* Full system DSB - make sure that the invalidation is complete */ - CP15DSB; - - /* ISB - make sure the instruction stream sees it */ - CP15ISB; -} |