sh: L-BOX RE2 support.

This adds support for the L-BOX RE2 router.

	http://www.nttcom.co.jp/l-box/

L-BOX RE2 is a SH7751R-based router. It has CF, Cardbus, serial,
and LAN x2. This is one of the very few SH boards that a general
person can obtain now.

The L-BOX shipped with a 2.4.28 kernel, this is a rewritten patch
adding it to current git.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/arch/sh/drivers/pci/fixups-lboxre2.c b/arch/sh/drivers/pci/fixups-lboxre2.c
new file mode 100644
index 000000000000..40b19bdfb891
--- /dev/null
+++ b/arch/sh/drivers/pci/fixups-lboxre2.c
@@ -0,0 +1,41 @@
+/*
+ * arch/sh/drivers/pci/fixups-lboxre2.c
+ *
+ * L-BOX RE2 PCI fixups
+ *
+ * Copyright (C) 2007 Nobuhiro Iwamatsu
+ *
+ * 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 "pci-sh4.h"
+
+#define PCIMCR_MRSET_OFF        0xBFFFFFFF
+#define PCIMCR_RFSH_OFF         0xFFFFFFFB
+
+int pci_fixup_pcic(void)
+{
+        unsigned long bcr1, mcr;
+
+        bcr1 = inl(SH7751_BCR1);
+        bcr1 |= 0x40080000;     /* Enable Bit 19 BREQEN, set PCIC to slave */
+        pci_write_reg(bcr1, SH4_PCIBCR1);
+
+        /* Enable all interrupts, so we known what to fix */
+        pci_write_reg(0x0000c3ff, SH4_PCIINTM);
+        pci_write_reg(0x0000380f, SH4_PCIAINTM);
+        pci_write_reg(0xfb900047, SH7751_PCICONF1);
+        pci_write_reg(0xab000001, SH7751_PCICONF4);
+
+        mcr = inl(SH7751_MCR);
+        mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF;
+        pci_write_reg(mcr, SH4_PCIMCR);
+
+        pci_write_reg(0x0c000000, SH7751_PCICONF5);
+        pci_write_reg(0xd0000000, SH7751_PCICONF6);
+        pci_write_reg(0x0c000000, SH4_PCILAR0);
+        pci_write_reg(0x00000000, SH4_PCILAR1);
+
+        return 0;
+}