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authorPaul Mundt <lethal@linux-sh.org>2007-11-08 19:00:27 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-01-28 13:18:39 +0900
commitd752542ade337f059d12c59c4bc9c312befa1f1e (patch)
treefa88e05b46a722a7d53b4d47a38b967079e84ce5 /include/asm-sh/cpu-sh5
parenta096a7e4762f685364df5ca03394eb63bbdb93df (diff)
downloadop-kernel-dev-d752542ade337f059d12c59c4bc9c312befa1f1e.zip
op-kernel-dev-d752542ade337f059d12c59c4bc9c312befa1f1e.tar.gz
sh: Add cache definitions for SH-5.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh/cpu-sh5')
-rw-r--r--include/asm-sh/cpu-sh5/cache.h94
1 files changed, 94 insertions, 0 deletions
diff --git a/include/asm-sh/cpu-sh5/cache.h b/include/asm-sh/cpu-sh5/cache.h
new file mode 100644
index 0000000..2d1f9c2
--- /dev/null
+++ b/include/asm-sh/cpu-sh5/cache.h
@@ -0,0 +1,94 @@
+#ifndef __ASM_SH64_CACHE_H
+#define __ASM_SH64_CACHE_H
+
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * include/asm-sh64/cache.h
+ *
+ * Copyright (C) 2000, 2001 Paolo Alberelli
+ * Copyright (C) 2003, 2004 Paul Mundt
+ *
+ */
+
+#define L1_CACHE_SHIFT 5
+
+/* Valid and Dirty bits */
+#define SH_CACHE_VALID (1LL<<0)
+#define SH_CACHE_UPDATED (1LL<<57)
+
+/* Cache flags */
+#define SH_CACHE_MODE_WT (1LL<<0)
+#define SH_CACHE_MODE_WB (1LL<<1)
+
+/*
+ * Control Registers.
+ */
+#define ICCR_BASE 0x01600000 /* Instruction Cache Control Register */
+#define ICCR_REG0 0 /* Register 0 offset */
+#define ICCR_REG1 1 /* Register 1 offset */
+#define ICCR0 ICCR_BASE+ICCR_REG0
+#define ICCR1 ICCR_BASE+ICCR_REG1
+
+#define ICCR0_OFF 0x0 /* Set ICACHE off */
+#define ICCR0_ON 0x1 /* Set ICACHE on */
+#define ICCR0_ICI 0x2 /* Invalidate all in IC */
+
+#define ICCR1_NOLOCK 0x0 /* Set No Locking */
+
+#define OCCR_BASE 0x01E00000 /* Operand Cache Control Register */
+#define OCCR_REG0 0 /* Register 0 offset */
+#define OCCR_REG1 1 /* Register 1 offset */
+#define OCCR0 OCCR_BASE+OCCR_REG0
+#define OCCR1 OCCR_BASE+OCCR_REG1
+
+#define OCCR0_OFF 0x0 /* Set OCACHE off */
+#define OCCR0_ON 0x1 /* Set OCACHE on */
+#define OCCR0_OCI 0x2 /* Invalidate all in OC */
+#define OCCR0_WT 0x4 /* Set OCACHE in WT Mode */
+#define OCCR0_WB 0x0 /* Set OCACHE in WB Mode */
+
+#define OCCR1_NOLOCK 0x0 /* Set No Locking */
+
+/*
+ * SH-5
+ * A bit of description here, for neff=32.
+ *
+ * |<--- tag (19 bits) --->|
+ * +-----------------------------+-----------------+------+----------+------+
+ * | | | ways |set index |offset|
+ * +-----------------------------+-----------------+------+----------+------+
+ * ^ 2 bits 8 bits 5 bits
+ * +- Bit 31
+ *
+ * Cacheline size is based on offset: 5 bits = 32 bytes per line
+ * A cache line is identified by a tag + set but OCACHETAG/ICACHETAG
+ * have a broader space for registers. These are outlined by
+ * CACHE_?C_*_STEP below.
+ *
+ */
+
+/* Instruction cache */
+#define CACHE_IC_ADDRESS_ARRAY 0x01000000
+
+/* Operand Cache */
+#define CACHE_OC_ADDRESS_ARRAY 0x01800000
+
+/* These declarations relate to cache 'synonyms' in the operand cache. A
+ 'synonym' occurs where effective address bits overlap between those used for
+ indexing the cache sets and those passed to the MMU for translation. In the
+ case of SH5-101 & SH5-103, only bit 12 is affected for 4k pages. */
+
+#define CACHE_OC_N_SYNBITS 1 /* Number of synonym bits */
+#define CACHE_OC_SYN_SHIFT 12
+/* Mask to select synonym bit(s) */
+#define CACHE_OC_SYN_MASK (((1UL<<CACHE_OC_N_SYNBITS)-1)<<CACHE_OC_SYN_SHIFT)
+
+/*
+ * Instruction cache can't be invalidated based on physical addresses.
+ * No Instruction Cache defines required, then.
+ */
+
+#endif /* __ASM_SH64_CACHE_H */
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