1 files changed, 48 insertions, 0 deletions

diff --git a/include/asm-ppc/ohare.h b/include/asm-ppc/ohare.h
new file mode 100644
index 000000000000..023b59772231
--- /dev/null
+++ b/include/asm-ppc/ohare.h
@@ -0,0 +1,48 @@
+/*
+ * ohare.h: definitions for using the "O'Hare" I/O controller chip.
+ *
+ * Copyright (C) 1997 Paul Mackerras.
+ *
+ * BenH: Changed to match those of heathrow (but not all of them). Please
+ *       check if I didn't break anything (especially the media bay).
+ */
+
+/* offset from ohare base for feature control register */
+#define OHARE_MBCR      0x34
+#define OHARE_FCR       0x38
+
+/*
+ * Bits in feature control register.
+ * These were mostly derived by experiment on a powerbook 3400
+ * and may differ for other machines.
+ */
+#define OH_SCC_RESET            1
+#define OH_BAY_POWER_N          2       /* a guess */
+#define OH_BAY_PCI_ENABLE       4       /* a guess */
+#define OH_BAY_IDE_ENABLE       8
+#define OH_BAY_FLOPPY_ENABLE    0x10
+#define OH_IDE0_ENABLE          0x20
+#define OH_IDE0_RESET_N         0x40    /* a guess */
+#define OH_BAY_DEV_MASK         0x1c
+#define OH_BAY_RESET_N          0x80
+#define OH_IOBUS_ENABLE         0x100   /* IOBUS seems to be IDE */
+#define OH_SCC_ENABLE           0x200
+#define OH_MESH_ENABLE          0x400
+#define OH_FLOPPY_ENABLE        0x800
+#define OH_SCCA_IO              0x4000
+#define OH_SCCB_IO              0x8000
+#define OH_VIA_ENABLE           0x10000 /* Is apparently wrong, to be verified */
+#define OH_IDE1_RESET_N         0x800000
+
+/*
+ * Bits to set in the feature control register on PowerBooks.
+ */
+#define PBOOK_FEATURES          (OH_IDE_ENABLE | OH_SCC_ENABLE | \
+                                 OH_MESH_ENABLE | OH_SCCA_IO | OH_SCCB_IO)
+
+/*
+ * A magic value to put into the feature control register of the
+ * "ohare" I/O controller on Starmaxes to enable the IDE CD interface.
+ * Contributed by Harry Eaton.
+ */
+#define STARMAX_FEATURES        0xbeff7a