powerpc, 8xx: move cache helper into C

[people/ms/u-boot.git] / arch / powerpc / include / asm / cache.h

diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index 20c52fcddcff5a6bd239b9f1058c9760cb107380..0801d2c367765e3162fd86226eec4661d17c5890 100644 (file)
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -7,7 +7,9 @@
 #include <asm/processor.h>
 
 /* bytes per L1 cache line */
-#if defined(CONFIG_PPC64BRIDGE)
+#if defined(CONFIG_8xx)
+#define        L1_CACHE_SHIFT  4
+#elif defined(CONFIG_PPC64BRIDGE)
 #define L1_CACHE_SHIFT 7
 #elif defined(CONFIG_E500MC)
 #define L1_CACHE_SHIFT 6
@@ -70,4 +72,73 @@ void disable_cpc_sram(void);
 #define L2CACHE_NONE   0x03    /* NONE */
 #define L2CACHE_PARITY  0x08    /* Mask for L2 Cache Parity Protected bit */
 
+#ifdef CONFIG_8xx
+/* Cache control on the MPC8xx is provided through some additional
+ * special purpose registers.
+ */
+#define IC_CST         560     /* Instruction cache control/status */
+#define IC_ADR         561     /* Address needed for some commands */
+#define IC_DAT         562     /* Read-only data register */
+#define DC_CST         568     /* Data cache control/status */
+#define DC_ADR         569     /* Address needed for some commands */
+#define DC_DAT         570     /* Read-only data register */
+
+/* Commands.  Only the first few are available to the instruction cache.
+*/
+#define        IDC_ENABLE      0x02000000      /* Cache enable */
+#define IDC_DISABLE    0x04000000      /* Cache disable */
+#define IDC_LDLCK      0x06000000      /* Load and lock */
+#define IDC_UNLINE     0x08000000      /* Unlock line */
+#define IDC_UNALL      0x0a000000      /* Unlock all */
+#define IDC_INVALL     0x0c000000      /* Invalidate all */
+
+#define DC_FLINE       0x0e000000      /* Flush data cache line */
+#define DC_SFWT                0x01000000      /* Set forced writethrough mode */
+#define DC_CFWT                0x03000000      /* Clear forced writethrough mode */
+#define DC_SLES                0x05000000      /* Set little endian swap mode */
+#define DC_CLES                0x07000000      /* Clear little endian swap mode */
+
+/* Status.
+*/
+#define IDC_ENABLED    0x80000000      /* Cache is enabled */
+#define IDC_CERR1      0x00200000      /* Cache error 1 */
+#define IDC_CERR2      0x00100000      /* Cache error 2 */
+#define IDC_CERR3      0x00080000      /* Cache error 3 */
+
+#define DC_DFWT                0x40000000      /* Data cache is forced write through */
+#define DC_LES         0x20000000      /* Caches are little endian mode */
+
+#if !defined(__ASSEMBLY__)
+static inline uint rd_ic_cst(void)
+{
+       return mfspr(IC_CST);
+}
+
+static inline void wr_ic_cst(uint val)
+{
+       mtspr(IC_CST, val);
+}
+
+static inline void wr_ic_adr(uint val)
+{
+       mtspr(IC_ADR, val);
+}
+
+static inline uint rd_dc_cst(void)
+{
+       return mfspr(DC_CST);
+}
+
+static inline void wr_dc_cst(uint val)
+{
+       mtspr(DC_CST, val);
+}
+
+static inline void wr_dc_adr(uint val)
+{
+       mtspr(DC_ADR, val);
+}
+#endif
+#endif /* CONFIG_8xx */
+
 #endif