From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/arm/mach-footbridge/cats-hw.c | 98 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 arch/arm/mach-footbridge/cats-hw.c

(limited to 'arch/arm/mach-footbridge/cats-hw.c')

diff --git a/arch/arm/mach-footbridge/cats-hw.c b/arch/arm/mach-footbridge/cats-hw.c
new file mode 100644
index 000000000..e575dc069
--- /dev/null
+++ b/arch/arm/mach-footbridge/cats-hw.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/arch/arm/mach-footbridge/cats-hw.c
+ *
+ * CATS machine fixup
+ *
+ * Copyright (C) 1998, 1999 Russell King, Phil Blundell
+ */
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/screen_info.h>
+#include <linux/io.h>
+#include <linux/spinlock.h>
+
+#include <asm/hardware/dec21285.h>
+#include <asm/mach-types.h>
+#include <asm/setup.h>
+
+#include <asm/mach/arch.h>
+
+#include "common.h"
+
+#define CFG_PORT	0x370
+#define INDEX_PORT	(CFG_PORT)
+#define DATA_PORT	(CFG_PORT + 1)
+
+static int __init cats_hw_init(void)
+{
+	if (machine_is_cats()) {
+		/* Set Aladdin to CONFIGURE mode */
+		outb(0x51, CFG_PORT);
+		outb(0x23, CFG_PORT);
+
+		/* Select logical device 3 */
+		outb(0x07, INDEX_PORT);
+		outb(0x03, DATA_PORT);
+
+		/* Set parallel port to DMA channel 3, ECP+EPP1.9, 
+		   enable EPP timeout */
+		outb(0x74, INDEX_PORT);
+		outb(0x03, DATA_PORT);
+	
+		outb(0xf0, INDEX_PORT);
+		outb(0x0f, DATA_PORT);
+
+		outb(0xf1, INDEX_PORT);
+		outb(0x07, DATA_PORT);
+
+		/* Select logical device 4 */
+		outb(0x07, INDEX_PORT);
+		outb(0x04, DATA_PORT);
+
+		/* UART1 high speed mode */
+		outb(0xf0, INDEX_PORT);
+		outb(0x02, DATA_PORT);
+
+		/* Select logical device 5 */
+		outb(0x07, INDEX_PORT);
+		outb(0x05, DATA_PORT);
+
+		/* UART2 high speed mode */
+		outb(0xf0, INDEX_PORT);
+		outb(0x02, DATA_PORT);
+
+		/* Set Aladdin to RUN mode */
+		outb(0xbb, CFG_PORT);
+	}
+
+	return 0;
+}
+
+__initcall(cats_hw_init);
+
+/*
+ * CATS uses soft-reboot by default, since
+ * hard reboots fail on early boards.
+ */
+static void __init
+fixup_cats(struct tag *tags, char **cmdline)
+{
+#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
+	screen_info.orig_video_lines  = 25;
+	screen_info.orig_video_points = 16;
+	screen_info.orig_y = 24;
+#endif
+}
+
+MACHINE_START(CATS, "Chalice-CATS")
+	/* Maintainer: Philip Blundell */
+	.atag_offset	= 0x100,
+	.reboot_mode	= REBOOT_SOFT,
+	.fixup		= fixup_cats,
+	.map_io		= footbridge_map_io,
+	.init_irq	= footbridge_init_irq,
+	.init_time	= isa_timer_init,
+	.restart	= footbridge_restart,
+MACHINE_END
-- 
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