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MIPS: Move cache sizes to Kconfig

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Move details of the L1 cache line sizes & total sizes into Kconfig,
defaulting to 0. A new CONFIG_SYS_CACHE_SIZE_AUTO Kconfig entry is
introduced to allow platforms to select auto-detection of cache sizes,
and it defaults to being enabled if none of the cache sizes are set by
the configuration (ie. sizes are all the default 0), and code is
adjusted to #ifdef on that rather than on the definition of the sizes
(which will always be defined even if 0).

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
This commit is contained in:
Paul Burton
2016-05-27 14:28:04 +01:00
committed by Daniel Schwierzeck
parent 83b0face8c
commit ace3be4f15
18 changed files with 95 additions and 53 deletions
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2
arch/mips/lib/cache.c
View File

@@ -9,7 +9,7 @@
#include <asm/cacheops.h>
#include <asm/mipsregs.h>
#ifdef CONFIG_SYS_CACHELINE_SIZE
#ifndef CONFIG_SYS_CACHE_SIZE_AUTO
static inline unsigned long icache_line_size(void)
{

6
arch/mips/lib/cache_init.S
View File

@@ -99,14 +99,14 @@
*
*/
LEAF(mips_cache_reset)
#ifdef CONFIG_SYS_ICACHE_SIZE
#ifndef CONFIG_SYS_CACHE_SIZE_AUTO
li t2, CONFIG_SYS_ICACHE_SIZE
li t8, CONFIG_SYS_CACHELINE_SIZE
#else
l1_info t2, t8, MIPS_CONF1_IA_SHF
#endif
#ifdef CONFIG_SYS_DCACHE_SIZE
#ifndef CONFIG_SYS_CACHE_SIZE_AUTO
li t3, CONFIG_SYS_DCACHE_SIZE
li t9, CONFIG_SYS_CACHELINE_SIZE
#else
@@ -116,7 +116,7 @@ LEAF(mips_cache_reset)
#ifdef CONFIG_SYS_MIPS_CACHE_INIT_RAM_LOAD
/* Determine the largest L1 cache size */
#if defined(CONFIG_SYS_ICACHE_SIZE) && defined(CONFIG_SYS_DCACHE_SIZE)
#ifndef CONFIG_SYS_CACHE_SIZE_AUTO
#if CONFIG_SYS_ICACHE_SIZE > CONFIG_SYS_DCACHE_SIZE
li v0, CONFIG_SYS_ICACHE_SIZE
#else