kernel-fxtec-pro1x/arch/i386/mach-voyager/setup.c
Jeremy Fitzhardinge e75eac33b5 [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>
2006-06-25 10:00:55 -07:00

121 lines
2.7 KiB
C

/*
* Machine specific setup for generic
*/
#include <linux/config.h>
#include <linux/init.h>
#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)
{
init_ISA_irqs();
}
/*
* IRQ2 is cascade interrupt to second interrupt controller
*/
static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL};
void __init intr_init_hook(void)
{
#ifdef CONFIG_SMP
smp_intr_init();
#endif
if (!acpi_ioapic)
setup_irq(2, &irq2);
}
void __init pre_setup_arch_hook(void)
{
/* Voyagers run their CPUs from independent clocks, so disable
* the TSC code because we can't sync them */
tsc_disable = 1;
}
void __init trap_init_hook(void)
{
}
static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL};
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;
}