From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Sat, 16 Apr 2005 15:20:36 -0700
Subject: Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
---
 arch/arm/mach-rpc/riscpc.c | 179 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 179 insertions(+)
 create mode 100644 arch/arm/mach-rpc/riscpc.c

(limited to 'arch/arm/mach-rpc/riscpc.c')

diff --git a/arch/arm/mach-rpc/riscpc.c b/arch/arm/mach-rpc/riscpc.c
new file mode 100644
index 00000000000..815c53225cd
--- /dev/null
+++ b/arch/arm/mach-rpc/riscpc.c
@@ -0,0 +1,179 @@
+/*
+ *  linux/arch/arm/mach-rpc/riscpc.c
+ *
+ *  Copyright (C) 1998-2001 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Architecture specific fixups.
+ */
+#include <linux/kernel.h>
+#include <linux/tty.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/device.h>
+#include <linux/serial_8250.h>
+
+#include <asm/elf.h>
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/page.h>
+#include <asm/domain.h>
+#include <asm/setup.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+
+extern void rpc_init_irq(void);
+
+extern unsigned int vram_size;
+
+#if 0
+
+unsigned int memc_ctrl_reg;
+unsigned int number_mfm_drives;
+
+static int __init parse_tag_acorn(const struct tag *tag)
+{
+	memc_ctrl_reg = tag->u.acorn.memc_control_reg;
+	number_mfm_drives = tag->u.acorn.adfsdrives;
+
+	switch (tag->u.acorn.vram_pages) {
+	case 512:
+		vram_size += PAGE_SIZE * 256;
+	case 256:
+		vram_size += PAGE_SIZE * 256;
+	default:
+		break;
+	}
+#if 0
+	if (vram_size) {
+		desc->video_start = 0x02000000;
+		desc->video_end   = 0x02000000 + vram_size;
+	}
+#endif
+	return 0;
+}
+
+__tagtable(ATAG_ACORN, parse_tag_acorn);
+
+#endif
+
+static struct map_desc rpc_io_desc[] __initdata = {
+ { SCREEN_BASE,	SCREEN_START,	2*1048576, MT_DEVICE }, /* VRAM		*/
+ { (u32)IO_BASE, IO_START,	IO_SIZE	 , MT_DEVICE }, /* IO space	*/
+ { EASI_BASE,	EASI_START,	EASI_SIZE, MT_DEVICE }  /* EASI space	*/
+};
+
+static void __init rpc_map_io(void)
+{
+	iotable_init(rpc_io_desc, ARRAY_SIZE(rpc_io_desc));
+
+	/*
+	 * Turn off floppy.
+	 */
+	outb(0xc, 0x3f2);
+
+	/*
+	 * RiscPC can't handle half-word loads and stores
+	 */
+	elf_hwcap &= ~HWCAP_HALF;
+}
+
+static struct resource acornfb_resources[] = {
+	{	/* VIDC */
+		.start		= 0x03400000,
+		.end		= 0x035fffff,
+		.flags		= IORESOURCE_MEM,
+	}, {
+		.start		= IRQ_VSYNCPULSE,
+		.end		= IRQ_VSYNCPULSE,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device acornfb_device = {
+	.name			= "acornfb",
+	.id			= -1,
+	.dev			= {
+		.coherent_dma_mask = 0xffffffff,
+	},
+	.num_resources		= ARRAY_SIZE(acornfb_resources),
+	.resource		= acornfb_resources,
+};
+
+static struct resource iomd_resources[] = {
+	{
+		.start		= 0x03200000,
+		.end		= 0x0320ffff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device iomd_device = {
+	.name			= "iomd",
+	.id			= -1,
+	.num_resources		= ARRAY_SIZE(iomd_resources),
+	.resource		= iomd_resources,
+};
+
+static struct platform_device kbd_device = {
+	.name			= "kart",
+	.id			= -1,
+	.dev			= {
+		.parent 	= &iomd_device.dev,
+	},
+};
+
+static struct plat_serial8250_port serial_platform_data[] = {
+	{
+		.mapbase	= 0x03010fe0,
+		.irq		= 10,
+		.uartclk	= 1843200,
+		.regshift	= 2,
+		.iotype		= UPIO_MEM,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
+	},
+	{ },
+};
+
+static struct platform_device serial_device = {
+	.name			= "serial8250",
+	.id			= 0,
+	.dev			= {
+		.platform_data	= serial_platform_data,
+	},
+};
+
+static struct platform_device *devs[] __initdata = {
+	&iomd_device,
+	&kbd_device,
+	&serial_device,
+	&acornfb_device,
+};
+
+static int __init rpc_init(void)
+{
+	return platform_add_devices(devs, ARRAY_SIZE(devs));
+}
+
+arch_initcall(rpc_init);
+
+extern struct sys_timer ioc_timer;
+
+MACHINE_START(RISCPC, "Acorn-RiscPC")
+	MAINTAINER("Russell King")
+	BOOT_MEM(0x10000000, 0x03000000, 0xe0000000)
+	BOOT_PARAMS(0x10000100)
+	DISABLE_PARPORT(0)
+	DISABLE_PARPORT(1)
+	MAPIO(rpc_map_io)
+	INITIRQ(rpc_init_irq)
+	.timer		= &ioc_timer,
+MACHINE_END
-- 
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