+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
* Aneesh V <aneesh@ti.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
+#include <cpu_func.h>
+#include <asm/cache.h>
#include <linux/types.h>
#include <common.h>
#include <asm/armv7.h>
#include <asm/utils.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
+#define ARMV7_DCACHE_INVAL_RANGE 1
+#define ARMV7_DCACHE_CLEAN_INVAL_RANGE 2
-#ifndef CONFIG_SYS_DCACHE_OFF
-/*
- * 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;
+#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
- /* Write to Cache Size Selection Register(CSSELR) */
- asm volatile ("mcr p15, 2, %0, c0, c0, 0" : : "r" (csselr));
-}
+/* Asm functions from cache_v7_asm.S */
+void v7_flush_dcache_all(void);
+void v7_invalidate_dcache_all(void);
static u32 get_ccsidr(void)
{
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;
- u32 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 */
- DSB;
-}
-
-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;
- u32 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 */
- DSB;
-}
-
-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;
{
u32 mva;
- /*
- * If start address is not aligned to cache-line do not
- * invalidate the first cache-line
- */
- if (start & (line_len - 1)) {
- printf("ERROR: %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)) {
- printf("ERROR: %s - stop address is not aligned - 0x%08x\n",
- __func__, stop);
- /* align to the beginning of this cache line */
- stop &= ~(line_len - 1);
- }
+ if (!check_cache_range(start, stop))
+ return;
for (mva = start; mva < stop; mva = mva + line_len) {
/* DCIMVAC - Invalidate data cache by MVA to PoC */
}
/* DSB to make sure the operation is complete */
- DSB;
+ dsb();
}
/* Invalidate TLB */
/* 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 */
- DSB;
+ dsb();
/* Full system ISB - make sure the instruction stream sees it */
- ISB;
+ isb();
}
void invalidate_dcache_all(void)
{
- v7_maint_dcache_all(ARMV7_DCACHE_INVAL_ALL);
+ v7_invalidate_dcache_all();
v7_outer_cache_inval_all();
}
*/
void flush_dcache_all(void)
{
- v7_maint_dcache_all(ARMV7_DCACHE_CLEAN_INVAL_ALL);
+ v7_flush_dcache_all();
v7_outer_cache_flush_all();
}
*/
void invalidate_dcache_range(unsigned long start, unsigned long stop)
{
+ check_cache_range(start, stop);
+
v7_dcache_maint_range(start, stop, ARMV7_DCACHE_INVAL_RANGE);
v7_outer_cache_inval_range(start, stop);
*/
void flush_dcache_range(unsigned long start, unsigned long stop)
{
+ check_cache_range(start, stop);
+
v7_dcache_maint_range(start, stop, ARMV7_DCACHE_CLEAN_INVAL_RANGE);
v7_outer_cache_flush_range(start, stop);
flush_dcache_range(start, stop);
v7_inval_tlb();
}
-#else /* #ifndef CONFIG_SYS_DCACHE_OFF */
+#else /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
void invalidate_dcache_all(void)
{
}
{
}
+void invalidate_dcache_range(unsigned long start, unsigned long stop)
+{
+}
+
+void flush_dcache_range(unsigned long start, unsigned long stop)
+{
+}
+
void arm_init_before_mmu(void)
{
}
void arm_init_domains(void)
{
}
-#endif /* #ifndef CONFIG_SYS_DCACHE_OFF */
+#endif /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
-#ifndef CONFIG_SYS_ICACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
/* Invalidate entire I-cache and branch predictor array */
void invalidate_icache_all(void)
{
asm volatile ("mcr p15, 0, %0, c7, c5, 6" : : "r" (0));
/* Full system DSB - make sure that the invalidation is complete */
- DSB;
+ dsb();
/* ISB - make sure the instruction stream sees it */
- ISB;
+ isb();
}
#else
void invalidate_icache_all(void)
projects / oweals / u-boot.git / blobdiff