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MIPS: Move cache sizes to Kconfig

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>
Paul Burton пре 8 година
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ace3be4f15

+ 28 - 0
arch/mips/Kconfig

@@ -246,6 +246,34 @@ config SWAP_IO_SPACE
 config SYS_MIPS_CACHE_INIT_RAM_LOAD
 	bool
 
+config SYS_DCACHE_SIZE
+	int
+	default 0
+	help
+	  The total size of the L1 Dcache, if known at compile time.
+
+config SYS_ICACHE_SIZE
+	int
+	default 0
+	help
+	  The total size of the L1 ICache, if known at compile time.
+
+config SYS_CACHELINE_SIZE
+	int
+	default 0
+	help
+	  The size of L1 cache lines, if known at compile time.
+
+config SYS_CACHE_SIZE_AUTO
+	def_bool y if SYS_DCACHE_SIZE = 0 && SYS_ICACHE_SIZE = 0 && \
+		SYS_CACHELINE_SIZE = 0
+	help
+	  Select this (or let it be auto-selected by not defining any cache
+	  sizes) in order to allow U-Boot to automatically detect the sizes
+	  of caches at runtime. This has a small cost in code size & runtime
+	  so if you know the cache configuration for your system at compile
+	  time it would be beneficial to configure it.
+
 config MIPS_L1_CACHE_SHIFT_4
 	bool
 

+ 1 - 1
arch/mips/lib/cache.c

@@ -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)
 {

+ 3 - 3
arch/mips/lib/cache_init.S

@@ -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

+ 9 - 0
board/dbau1x00/Kconfig

@@ -12,6 +12,15 @@ config SYS_CONFIG_NAME
 config SYS_TEXT_BASE
 	default 0xbfc00000
 
+config SYS_DCACHE_SIZE
+	default 16384
+
+config SYS_ICACHE_SIZE
+	default 16384
+
+config SYS_CACHELINE_SIZE
+	default 32
+
 menu "dbau1x00 board options"
 
 choice

+ 9 - 0
board/micronas/vct/Kconfig

@@ -12,6 +12,15 @@ config SYS_CONFIG_NAME
 config SYS_TEXT_BASE
 	default 0x87000000
 
+config SYS_DCACHE_SIZE
+	default 16384
+
+config SYS_ICACHE_SIZE
+	default 16384
+
+config SYS_CACHELINE_SIZE
+	default 32
+
 menu "vct board options"
 
 choice

+ 9 - 0
board/pb1x00/Kconfig

@@ -12,4 +12,13 @@ config SYS_CONFIG_NAME
 config SYS_TEXT_BASE
 	default 0x83800000
 
+config SYS_DCACHE_SIZE
+	default 16384
+
+config SYS_ICACHE_SIZE
+	default 16384
+
+config SYS_CACHELINE_SIZE
+	default 32
+
 endif

+ 9 - 0
board/qca/ap121/Kconfig

@@ -12,4 +12,13 @@ config SYS_CONFIG_NAME
 config SYS_TEXT_BASE
 	default 0x9f000000
 
+config SYS_DCACHE_SIZE
+	default 32768
+
+config SYS_ICACHE_SIZE
+	default 65536
+
+config SYS_CACHELINE_SIZE
+	default 32
+
 endif

+ 9 - 0
board/qca/ap143/Kconfig

@@ -12,4 +12,13 @@ config SYS_CONFIG_NAME
 config SYS_TEXT_BASE
 	default 0x9f000000
 
+config SYS_DCACHE_SIZE
+	default 32768
+
+config SYS_ICACHE_SIZE
+	default 65536
+
+config SYS_CACHELINE_SIZE
+	default 32
+
 endif

+ 9 - 0
board/qemu-mips/Kconfig

@@ -11,4 +11,13 @@ config SYS_TEXT_BASE
 	default 0xbfc00000 if 32BIT
 	default 0xffffffffbfc00000 if 64BIT
 
+config SYS_DCACHE_SIZE
+	default 16384
+
+config SYS_ICACHE_SIZE
+	default 16384
+
+config SYS_CACHELINE_SIZE
+	default 32
+
 endif

+ 9 - 0
board/tplink/wdr4300/Kconfig

@@ -15,4 +15,13 @@ config SYS_CONFIG_NAME
 config SYS_TEXT_BASE
 	default 0xa1000000
 
+config SYS_DCACHE_SIZE
+	default 32768
+
+config SYS_ICACHE_SIZE
+	default 65536
+
+config SYS_CACHELINE_SIZE
+	default 32
+
 endif

+ 0 - 5
include/configs/ap121.h

@@ -15,11 +15,6 @@
 #define CONFIG_SYS_MHZ                  200
 #define CONFIG_SYS_MIPS_TIMER_FREQ      (CONFIG_SYS_MHZ * 1000000)
 
-/* Cache Configuration */
-#define CONFIG_SYS_DCACHE_SIZE          0x8000
-#define CONFIG_SYS_ICACHE_SIZE          0x10000
-#define CONFIG_SYS_CACHELINE_SIZE       32
-
 #define CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_TEXT_BASE
 
 #define CONFIG_SYS_MALLOC_LEN           0x40000

+ 0 - 5
include/configs/ap143.h

@@ -15,11 +15,6 @@
 #define CONFIG_SYS_MHZ                  325
 #define CONFIG_SYS_MIPS_TIMER_FREQ      (CONFIG_SYS_MHZ * 1000000)
 
-/* Cache Configuration */
-#define CONFIG_SYS_DCACHE_SIZE          0x8000
-#define CONFIG_SYS_ICACHE_SIZE          0x10000
-#define CONFIG_SYS_CACHELINE_SIZE       32
-
 #define CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_TEXT_BASE
 
 #define CONFIG_SYS_MALLOC_LEN           0x40000

+ 0 - 7
include/configs/dbau1x00.h

@@ -202,11 +202,4 @@
 #define CONFIG_SYS_ATA_ALT_OFFSET      0x0100
 #endif /* CONFIG_DBAU1550 */
 
-/*-----------------------------------------------------------------------
- * Cache Configuration
- */
-#define CONFIG_SYS_DCACHE_SIZE		16384
-#define CONFIG_SYS_ICACHE_SIZE		16384
-#define CONFIG_SYS_CACHELINE_SIZE	32
-
 #endif	/* __CONFIG_H */

+ 0 - 6
include/configs/pb1x00.h

@@ -144,12 +144,6 @@
 #define CONFIG_SYS_ATA_ALT_OFFSET      0x0100
 
 #endif
-/*-----------------------------------------------------------------------
- * Cache Configuration
- */
-#define CONFIG_SYS_DCACHE_SIZE		16384
-#define CONFIG_SYS_ICACHE_SIZE		16384
-#define CONFIG_SYS_CACHELINE_SIZE	32
 
 /*
  * BOOTP options

+ 0 - 7
include/configs/qemu-mips.h

@@ -132,11 +132,4 @@
 
 #define CONFIG_LZMA
 
-/*-----------------------------------------------------------------------
- * Cache Configuration
- */
-#define CONFIG_SYS_DCACHE_SIZE		16384
-#define CONFIG_SYS_ICACHE_SIZE		16384
-#define CONFIG_SYS_CACHELINE_SIZE	32
-
 #endif /* __CONFIG_H */

+ 0 - 7
include/configs/qemu-mips64.h

@@ -132,11 +132,4 @@
 
 #define CONFIG_LZMA
 
-/*-----------------------------------------------------------------------
- * Cache Configuration
- */
-#define CONFIG_SYS_DCACHE_SIZE		16384
-#define CONFIG_SYS_ICACHE_SIZE		16384
-#define CONFIG_SYS_CACHELINE_SIZE	32
-
 #endif /* __CONFIG_H */

+ 0 - 5
include/configs/tplink_wdr4300.h

@@ -15,11 +15,6 @@
 #define CONFIG_SYS_MHZ			280
 #define CONFIG_SYS_MIPS_TIMER_FREQ	(CONFIG_SYS_MHZ * 1000000)
 
-/* Cache Configuration */
-#define CONFIG_SYS_DCACHE_SIZE		0x8000
-#define CONFIG_SYS_ICACHE_SIZE		0x10000
-#define CONFIG_SYS_CACHELINE_SIZE	32
-
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
 
 #define CONFIG_SYS_MALLOC_LEN		0x40000

+ 0 - 7
include/configs/vct.h

@@ -203,13 +203,6 @@
 #define	CONFIG_ENV_SIZE			(128 << 10)	/* erase size */
 #endif /* CONFIG_VCT_ONENAND */
 
-/*
- * Cache Configuration
- */
-#define CONFIG_SYS_DCACHE_SIZE		16384
-#define CONFIG_SYS_ICACHE_SIZE		16384
-#define CONFIG_SYS_CACHELINE_SIZE	32
-
 /*
  * I2C/EEPROM
  */