Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / nds32 / include / asm / cache.h

diff --git a/qemu/roms/u-boot/arch/nds32/include/asm/cache.h b/qemu/roms/u-boot/arch/nds32/include/asm/cache.h
new file mode 100644 (file)
index 0000000..9038821
--- /dev/null
+++ b/qemu/roms/u-boot/arch/nds32/include/asm/cache.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef _ASM_CACHE_H
+#define _ASM_CACHE_H
+
+/* cache */
+int    icache_status(void);
+void   icache_enable(void);
+void   icache_disable(void);
+int    dcache_status(void);
+void   dcache_enable(void);
+void   dcache_disable(void);
+
+#define DEFINE_GET_SYS_REG(reg) \
+       static inline unsigned long GET_##reg(void)             \
+       {                                                       \
+               unsigned long val;                              \
+               __asm__ volatile (                              \
+               "mfsr %0, $"#reg : "=&r" (val) : : "memory"     \
+               );                                              \
+               return val;                                     \
+       }
+
+enum cache_t {ICACHE, DCACHE};
+DEFINE_GET_SYS_REG(ICM_CFG);
+DEFINE_GET_SYS_REG(DCM_CFG);
+#define ICM_CFG_OFF_ISZ        6       /* I-cache line size */
+#define ICM_CFG_MSK_ISZ        (0x7UL << ICM_CFG_OFF_ISZ)
+#define DCM_CFG_OFF_DSZ        6       /* D-cache line size */
+#define DCM_CFG_MSK_DSZ        (0x7UL << DCM_CFG_OFF_DSZ)
+
+/*
+ * The current upper bound for NDS32 L1 data cache line sizes is 32 bytes.
+ * We use that value for aligning DMA buffers unless the board config has
+ * specified an alternate cache line size.
+ */
+#ifdef CONFIG_SYS_CACHELINE_SIZE
+#define ARCH_DMA_MINALIGN      CONFIG_SYS_CACHELINE_SIZE
+#else
+#define ARCH_DMA_MINALIGN      32
+#endif
+
+#endif /* _ASM_CACHE_H */