From e75eac33b5c7f797e4b2ddcb39183cf268e26822 Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy@xensource.com>
Date: Sun, 25 Jun 2006 05:46:50 -0700
Subject: [PATCH] Clean up and refactor i386 sub-architecture setup

Clean up and refactor i386 sub-architecture setup.

This change moves all the code from the
asm-i386/mach-*/setup_arch_pre/post.h headers, into
arch/i386/mach-*/setup.c.  mach-*/setup_arch_pre.h is renamed to
setup_arch.h, and contains only things which should be in header files.  It
is purely code-motion; there should be no functional changes at all.

Several functions in arch/i386/kernel/setup.c needed to be made non-static
so that they're visible to the code in mach-*/setup.c.  asm-i386/setup.h is
used to hold the prototypes for these functions.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Cc: Martin Bligh <mbligh@google.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Andrey Panin <pazke@donpac.ru>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/mach-voyager/setup.c | 74 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

(limited to 'arch/i386/mach-voyager/setup.c')

diff --git a/arch/i386/mach-voyager/setup.c b/arch/i386/mach-voyager/setup.c
index 7d8a3acb9441..0e225054e222 100644
--- a/arch/i386/mach-voyager/setup.c
+++ b/arch/i386/mach-voyager/setup.c
@@ -7,6 +7,9 @@
 #include <linux/interrupt.h>
 #include <asm/acpi.h>
 #include <asm/arch_hooks.h>
+#include <asm/voyager.h>
+#include <asm/e820.h>
+#include <asm/setup.h>
 
 void __init pre_intr_init_hook(void)
 {
@@ -45,3 +48,74 @@ void __init time_init_hook(void)
 {
 	setup_irq(0, &irq0);
 }
+
+/* Hook for machine specific memory setup. */
+
+char * __init machine_specific_memory_setup(void)
+{
+	char *who;
+
+	who = "NOT VOYAGER";
+
+	if(voyager_level == 5) {
+		__u32 addr, length;
+		int i;
+
+		who = "Voyager-SUS";
+
+		e820.nr_map = 0;
+		for(i=0; voyager_memory_detect(i, &addr, &length); i++) {
+			add_memory_region(addr, length, E820_RAM);
+		}
+		return who;
+	} else if(voyager_level == 4) {
+		__u32 tom;
+		__u16 catbase = inb(VOYAGER_SSPB_RELOCATION_PORT)<<8;
+		/* select the DINO config space */
+		outb(VOYAGER_DINO, VOYAGER_CAT_CONFIG_PORT);
+		/* Read DINO top of memory register */
+		tom = ((inb(catbase + 0x4) & 0xf0) << 16)
+			+ ((inb(catbase + 0x5) & 0x7f) << 24);
+
+		if(inb(catbase) != VOYAGER_DINO) {
+			printk(KERN_ERR "Voyager: Failed to get DINO for L4, setting tom to EXT_MEM_K\n");
+			tom = (EXT_MEM_K)<<10;
+		}
+		who = "Voyager-TOM";
+		add_memory_region(0, 0x9f000, E820_RAM);
+		/* map from 1M to top of memory */
+		add_memory_region(1*1024*1024, tom - 1*1024*1024, E820_RAM);
+		/* FIXME: Should check the ASICs to see if I need to
+		 * take out the 8M window.  Just do it at the moment
+		 * */
+		add_memory_region(8*1024*1024, 8*1024*1024, E820_RESERVED);
+		return who;
+	}
+
+	who = "BIOS-e820";
+
+	/*
+	 * Try to copy the BIOS-supplied E820-map.
+	 *
+	 * Otherwise fake a memory map; one section from 0k->640k,
+	 * the next section from 1mb->appropriate_mem_k
+	 */
+	sanitize_e820_map(E820_MAP, &E820_MAP_NR);
+	if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0) {
+		unsigned long mem_size;
+
+		/* compare results from other methods and take the greater */
+		if (ALT_MEM_K < EXT_MEM_K) {
+			mem_size = EXT_MEM_K;
+			who = "BIOS-88";
+		} else {
+			mem_size = ALT_MEM_K;
+			who = "BIOS-e801";
+		}
+
+		e820.nr_map = 0;
+		add_memory_region(0, LOWMEMSIZE(), E820_RAM);
+		add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
+  	}
+	return who;
+}
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