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authorwbx <wbx@3c298f89-4303-0410-b956-a3cf2f4a3e73>2005-03-16 13:50:00 +0000
committerwbx <wbx@3c298f89-4303-0410-b956-a3cf2f4a3e73>2005-03-16 13:50:00 +0000
commit4f531230a3c9c8984c5a8e8b38874be7f608f2d1 (patch)
tree1f132d8a78f19c1172bf4dbd9fba583bbb45423d /package/linux/kernel-source/include/sbsdram.h
parentc7df5a6a2cd4103e0c52018ba81c0fd0ee60f74d (diff)
add all source code from linksys/broadcom which is free, to cvs for better maintainence inside
openwrt. this gives us the ability to better support different hardware models, without changing any external tar-balls. only et.o and wl.o is missing and is fetched from my webserver. git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@379 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/linux/kernel-source/include/sbsdram.h')
-rw-r--r--package/linux/kernel-source/include/sbsdram.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/package/linux/kernel-source/include/sbsdram.h b/package/linux/kernel-source/include/sbsdram.h
new file mode 100644
index 000000000..1b4c539a8
--- /dev/null
+++ b/package/linux/kernel-source/include/sbsdram.h
@@ -0,0 +1,75 @@
+/*
+ * BCM47XX Sonics SiliconBackplane SDRAM controller core hardware definitions.
+ *
+ * Copyright 2004, Broadcom Corporation
+ * All Rights Reserved.
+ *
+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
+ * $Id$
+ */
+
+#ifndef _SBSDRAM_H
+#define _SBSDRAM_H
+
+#ifndef _LANGUAGE_ASSEMBLY
+
+/* Sonics side: SDRAM core registers */
+typedef volatile struct sbsdramregs {
+ uint32 initcontrol; /* Generates external SDRAM initialization sequence */
+ uint32 config; /* Initializes external SDRAM mode register */
+ uint32 refresh; /* Controls external SDRAM refresh rate */
+ uint32 pad1;
+ uint32 pad2;
+} sbsdramregs_t;
+
+#endif
+
+/* SDRAM initialization control (initcontrol) register bits */
+#define SDRAM_CBR 0x0001 /* Writing 1 generates refresh cycle and toggles bit */
+#define SDRAM_PRE 0x0002 /* Writing 1 generates precharge cycle and toggles bit */
+#define SDRAM_MRS 0x0004 /* Writing 1 generates mode register select cycle and toggles bit */
+#define SDRAM_EN 0x0008 /* When set, enables access to SDRAM */
+#define SDRAM_16Mb 0x0000 /* Use 16 Megabit SDRAM */
+#define SDRAM_64Mb 0x0010 /* Use 64 Megabit SDRAM */
+#define SDRAM_128Mb 0x0020 /* Use 128 Megabit SDRAM */
+#define SDRAM_RSVMb 0x0030 /* Use special SDRAM */
+#define SDRAM_RST 0x0080 /* Writing 1 causes soft reset of controller */
+#define SDRAM_SELFREF 0x0100 /* Writing 1 enables self refresh mode */
+#define SDRAM_PWRDOWN 0x0200 /* Writing 1 causes controller to power down */
+#define SDRAM_32BIT 0x0400 /* When set, indicates 32 bit SDRAM interface */
+#define SDRAM_9BITCOL 0x0800 /* When set, indicates 9 bit column */
+
+/* SDRAM configuration (config) register bits */
+#define SDRAM_BURSTFULL 0x0000 /* Use full page bursts */
+#define SDRAM_BURST8 0x0001 /* Use burst of 8 */
+#define SDRAM_BURST4 0x0002 /* Use burst of 4 */
+#define SDRAM_BURST2 0x0003 /* Use burst of 2 */
+#define SDRAM_CAS3 0x0000 /* Use CAS latency of 3 */
+#define SDRAM_CAS2 0x0004 /* Use CAS latency of 2 */
+
+/* SDRAM refresh control (refresh) register bits */
+#define SDRAM_REF(p) (((p)&0xff) | SDRAM_REF_EN) /* Refresh period */
+#define SDRAM_REF_EN 0x8000 /* Writing 1 enables periodic refresh */
+
+/* SDRAM Core default Init values (OCP ID 0x803) */
+#define SDRAM_INIT MEM4MX16X2
+#define SDRAM_CONFIG SDRAM_BURSTFULL
+#define SDRAM_REFRESH SDRAM_REF(0x40)
+
+#define MEM1MX16 0x009 /* 2 MB */
+#define MEM1MX16X2 0x409 /* 4 MB */
+#define MEM2MX8X2 0x809 /* 4 MB */
+#define MEM2MX8X4 0xc09 /* 8 MB */
+#define MEM2MX32 0x439 /* 8 MB */
+#define MEM4MX16 0x019 /* 8 MB */
+#define MEM4MX16X2 0x419 /* 16 MB */
+#define MEM8MX8X2 0x819 /* 16 MB */
+#define MEM8MX16 0x829 /* 16 MB */
+#define MEM4MX32 0x429 /* 16 MB */
+#define MEM8MX8X4 0xc19 /* 32 MB */
+#define MEM8MX16X2 0xc29 /* 32 MB */
+
+#endif /* _SBSDRAM_H */