795 lines
22 KiB
C
795 lines
22 KiB
C
/* $NetBSD: ixdp425_machdep.c,v 1.8 2003/10/08 14:55:04 scw Exp $ */
|
|
/*
|
|
* Copyright (c) 2003
|
|
* Ichiro FUKUHARA <ichiro@ichiro.org>.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Ichiro FUKUHARA.
|
|
* 4. The name of the company nor the name of the author may be used to
|
|
* endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
/*
|
|
* Copyright (c) 1997,1998 Mark Brinicombe.
|
|
* Copyright (c) 1997,1998 Causality Limited.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Mark Brinicombe
|
|
* for the NetBSD Project.
|
|
* 4. The name of the company nor the name of the author may be used to
|
|
* endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/* Machine dependant functions for kernel setup for Intel IXP425 evaluation
|
|
* boards using RedBoot firmware.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: ixdp425_machdep.c,v 1.8 2003/10/08 14:55:04 scw Exp $");
|
|
|
|
#include "opt_ddb.h"
|
|
#include "opt_kgdb.h"
|
|
#include "opt_pmap_debug.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/device.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/msgbuf.h>
|
|
#include <sys/reboot.h>
|
|
#include <sys/termios.h>
|
|
#include <sys/ksyms.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <dev/cons.h>
|
|
|
|
#include <machine/db_machdep.h>
|
|
#include <ddb/db_sym.h>
|
|
#include <ddb/db_extern.h>
|
|
|
|
#include <machine/bootconfig.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/frame.h>
|
|
#include <arm/undefined.h>
|
|
|
|
#include <arm/arm32/machdep.h>
|
|
|
|
#include <arm/xscale/ixp425reg.h>
|
|
#include <arm/xscale/ixp425var.h>
|
|
#include <arm/xscale/ixp425_sipvar.h>
|
|
|
|
#include "com.h"
|
|
#if NCOM > 0
|
|
#include <dev/ic/comreg.h>
|
|
#include <dev/ic/comvar.h>
|
|
#endif
|
|
|
|
#include "opt_ipkdb.h"
|
|
#include "ksyms.h"
|
|
|
|
/* Kernel text starts 2MB in from the bottom of the kernel address space. */
|
|
#define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000)
|
|
#define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000)
|
|
|
|
/*
|
|
* The range 0xc1000000 - 0xccffffff is available for kernel VM space
|
|
* Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff
|
|
*/
|
|
#define KERNEL_VM_SIZE 0x0C000000
|
|
|
|
|
|
/*
|
|
* Address to call from cpu_reset() to reset the machine.
|
|
* This is machine architecture dependant as it varies depending
|
|
* on where the ROM appears when you turn the MMU off.
|
|
*/
|
|
|
|
u_int cpu_reset_address = 0x00000000;
|
|
|
|
/* Define various stack sizes in pages */
|
|
#define IRQ_STACK_SIZE 1
|
|
#define ABT_STACK_SIZE 1
|
|
#ifdef IPKDB
|
|
#define UND_STACK_SIZE 2
|
|
#else
|
|
#define UND_STACK_SIZE 1
|
|
#endif
|
|
|
|
BootConfig bootconfig; /* Boot config storage */
|
|
char *boot_args = NULL;
|
|
char *boot_file = NULL;
|
|
|
|
vm_offset_t physical_start;
|
|
vm_offset_t physical_freestart;
|
|
vm_offset_t physical_freeend;
|
|
vm_offset_t physical_end;
|
|
u_int free_pages;
|
|
vm_offset_t pagetables_start;
|
|
int physmem = 0;
|
|
|
|
/* Physical and virtual addresses for some global pages */
|
|
pv_addr_t systempage;
|
|
pv_addr_t irqstack;
|
|
pv_addr_t undstack;
|
|
pv_addr_t abtstack;
|
|
pv_addr_t kernelstack;
|
|
pv_addr_t minidataclean;
|
|
|
|
vm_offset_t msgbufphys;
|
|
|
|
extern u_int data_abort_handler_address;
|
|
extern u_int prefetch_abort_handler_address;
|
|
extern u_int undefined_handler_address;
|
|
extern int end;
|
|
|
|
#ifdef PMAP_DEBUG
|
|
extern int pmap_debug_level;
|
|
#endif
|
|
|
|
#define KERNEL_PT_SYS 0 /* L2 table for mapping zero page */
|
|
|
|
#define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */
|
|
#define KERNEL_PT_KERNEL_NUM 4
|
|
#define KERNEL_PT_IO (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
|
|
/* L2 tables for mapping kernel VM */
|
|
#define KERNEL_PT_VMDATA (KERNEL_PT_IO + 1)
|
|
#define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */
|
|
#define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
|
|
|
|
pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
|
|
|
|
struct user *proc0paddr;
|
|
|
|
/* Prototypes */
|
|
|
|
void consinit(void);
|
|
u_int cpu_get_control __P((void));
|
|
|
|
/*
|
|
* Define the default console speed for the board. This is generally
|
|
* what the firmware provided with the board defaults to.
|
|
*/
|
|
#ifndef CONSPEED
|
|
#define CONSPEED B115200
|
|
#endif /* ! CONSPEED */
|
|
|
|
#ifndef CONUNIT
|
|
#define CONUNIT 0
|
|
#endif
|
|
|
|
#ifndef CONMODE
|
|
#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB)) | CS8) /* 8N1 */
|
|
#endif
|
|
|
|
int comcnspeed = CONSPEED;
|
|
int comcnmode = CONMODE;
|
|
int comcnunit = CONUNIT;
|
|
|
|
#if KGDB
|
|
#ifndef KGDB_DEVNAME
|
|
#error Must define KGDB_DEVNAME
|
|
#endif
|
|
const char kgdb_devname[] = KGDB_DEVNAME;
|
|
|
|
#ifndef KGDB_DEVADDR
|
|
#error Must define KGDB_DEVADDR
|
|
#endif
|
|
unsigned long kgdb_devaddr = KGDB_DEVADDR;
|
|
|
|
#ifndef KGDB_DEVRATE
|
|
#define KGDB_DEVRATE CONSPEED
|
|
#endif
|
|
int kgdb_devrate = KGDB_DEVRATE;
|
|
|
|
#ifndef KGDB_DEVMODE
|
|
#define KGDB_DEVMODE CONMODE
|
|
#endif
|
|
int kgdb_devmode = KGDB_DEVMODE;
|
|
#endif /* KGDB */
|
|
|
|
/*
|
|
* void cpu_reboot(int howto, char *bootstr)
|
|
*
|
|
* Reboots the system
|
|
*
|
|
* Deal with any syncing, unmounting, dumping and shutdown hooks,
|
|
* then reset the CPU.
|
|
*/
|
|
void
|
|
cpu_reboot(int howto, char *bootstr)
|
|
{
|
|
#ifdef DIAGNOSTIC
|
|
/* info */
|
|
printf("boot: howto=%08x curproc=%p\n", howto, curproc);
|
|
#endif
|
|
|
|
/*
|
|
* If we are still cold then hit the air brakes
|
|
* and crash to earth fast
|
|
*/
|
|
if (cold) {
|
|
doshutdownhooks();
|
|
printf("The operating system has halted.\n");
|
|
printf("Please press any key to reboot.\n\n");
|
|
cngetc();
|
|
printf("rebooting...\n");
|
|
goto reset;
|
|
}
|
|
|
|
/* Disable console buffering */
|
|
|
|
/*
|
|
* If RB_NOSYNC was not specified sync the discs.
|
|
* Note: Unless cold is set to 1 here, syslogd will die during the
|
|
* unmount. It looks like syslogd is getting woken up only to find
|
|
* that it cannot page part of the binary in as the filesystem has
|
|
* been unmounted.
|
|
*/
|
|
if (!(howto & RB_NOSYNC))
|
|
bootsync();
|
|
|
|
/* Say NO to interrupts */
|
|
splhigh();
|
|
|
|
/* Do a dump if requested. */
|
|
if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
|
|
dumpsys();
|
|
|
|
/* Run any shutdown hooks */
|
|
doshutdownhooks();
|
|
|
|
/* Make sure IRQ's are disabled */
|
|
IRQdisable;
|
|
|
|
if (howto & RB_HALT) {
|
|
printf("The operating system has halted.\n");
|
|
printf("Please press any key to reboot.\n\n");
|
|
cngetc();
|
|
}
|
|
|
|
printf("rebooting...\n\r");
|
|
reset:
|
|
/*
|
|
* Make really really sure that all interrupts are disabled,
|
|
*/
|
|
(void) disable_interrupts(I32_bit|F32_bit);
|
|
/*
|
|
* XXX system reset routine
|
|
*/
|
|
(void) disable_interrupts(I32_bit|F32_bit);
|
|
/* ...and if that didn't work, just croak. */
|
|
printf("RESET FAILED!\n");
|
|
for (;;);
|
|
}
|
|
|
|
/* Static device mappings. */
|
|
static const struct pmap_devmap ixp425_devmap[] = {
|
|
/* Physical/Virtual address for I/O space */
|
|
{
|
|
IXP425_IO_VBASE,
|
|
IXP425_IO_HWBASE,
|
|
IXP425_IO_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_NOCACHE,
|
|
},
|
|
|
|
/* Expansion Bus */
|
|
{
|
|
IXP425_EXP_VBASE,
|
|
IXP425_EXP_HWBASE,
|
|
IXP425_EXP_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_NOCACHE,
|
|
},
|
|
|
|
/* IXP425 PCI Configuration */
|
|
{
|
|
IXP425_PCI_VBASE,
|
|
IXP425_PCI_HWBASE,
|
|
IXP425_PCI_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_NOCACHE,
|
|
},
|
|
|
|
/* PCI Memory Space */
|
|
{
|
|
IXP425_PCI_MEM_VBASE,
|
|
IXP425_PCI_MEM_HWBASE,
|
|
IXP425_PCI_MEM_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_NOCACHE,
|
|
},
|
|
|
|
{
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
}
|
|
};
|
|
|
|
/*
|
|
* u_int initarm(...)
|
|
*
|
|
* Initial entry point on startup. This gets called before main() is
|
|
* entered.
|
|
* It should be responsible for setting up everything that must be
|
|
* in place when main is called.
|
|
* This includes
|
|
* Taking a copy of the boot configuration structure.
|
|
* Initialising the physical console so characters can be printed.
|
|
* Setting up page tables for the kernel
|
|
* Relocating the kernel to the bottom of physical memory
|
|
*/
|
|
u_int
|
|
initarm(void *arg)
|
|
{
|
|
extern vaddr_t xscale_cache_clean_addr;
|
|
#ifdef DIAGNOSTIC
|
|
extern vsize_t xscale_minidata_clean_size;
|
|
#endif
|
|
int loop;
|
|
int loop1;
|
|
u_int kerneldatasize, symbolsize;
|
|
u_int l1pagetable;
|
|
u_int freemempos;
|
|
pv_addr_t kernel_l1pt;
|
|
#if 0
|
|
paddr_t memstart;
|
|
psize_t memsize;
|
|
#endif
|
|
|
|
/*
|
|
* Since we map v0xf0000000 == p0xc8000000, it's possible for
|
|
* us to initialize the console now.
|
|
*/
|
|
consinit();
|
|
|
|
#ifdef VERBOSE_INIT_ARM
|
|
/* Talk to the user */
|
|
printf("\nNetBSD/evbarm (Intel IXDP425) booting ...\n");
|
|
#endif
|
|
|
|
/*
|
|
* Heads up ... Setup the CPU / MMU / TLB functions
|
|
*/
|
|
if (set_cpufuncs())
|
|
panic("cpu not recognized!");
|
|
|
|
/* XXX overwrite bootconfig to hardcoded values */
|
|
bootconfig.dramblocks = 1;
|
|
bootconfig.dram[0].address = 0x10000000;
|
|
/* XXX */
|
|
#if BOARDTYPE == zao425
|
|
bootconfig.dram[0].pages = 0x04000000 / PAGE_SIZE; /* SDRAM 64MB */
|
|
#elif BOARDTYPE == ixdp425
|
|
bootconfig.dram[0].pages = 0x10000000 / PAGE_SIZE; /* SDRAM 256MB */
|
|
#endif
|
|
|
|
kerneldatasize = (u_int32_t)&end - (u_int32_t)KERNEL_TEXT_BASE;
|
|
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("kernsize=0x%x\n", kerneldatasize);
|
|
#endif
|
|
kerneldatasize += symbolsize;
|
|
kerneldatasize = ((kerneldatasize - 1) & ~(PAGE_SIZE * 4 - 1)) + PAGE_SIZE * 8;
|
|
|
|
/*
|
|
* Set up the variables that define the availablilty of
|
|
* physical memory. For now, we're going to set
|
|
* physical_freestart to 0x10200000 (where the kernel
|
|
* was loaded), and allocate the memory we need downwards.
|
|
* If we get too close to the L1 table that we set up, we
|
|
* will panic. We will update physical_freestart and
|
|
* physical_freeend later to reflect what pmap_bootstrap()
|
|
* wants to see.
|
|
*
|
|
* XXX pmap_bootstrap() needs an enema.
|
|
*/
|
|
physical_start = bootconfig.dram[0].address;
|
|
physical_end = physical_start + (bootconfig.dram[0].pages * PAGE_SIZE);
|
|
|
|
physical_freestart = physical_start
|
|
+ (KERNEL_TEXT_BASE - KERNEL_BASE) + kerneldatasize;
|
|
physical_freeend = physical_end;
|
|
|
|
physmem = (physical_end - physical_start) / PAGE_SIZE;
|
|
|
|
/* Tell the user about the memory */
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
|
|
physical_start, physical_end - 1);
|
|
|
|
printf("Allocating page tables\n");
|
|
#endif
|
|
free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE;
|
|
|
|
freemempos = 0x10000000;
|
|
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("physical_start = 0x%08lx, physical_end = 0x%08lx\n",
|
|
physical_start, physical_end);
|
|
#endif
|
|
|
|
/* Define a macro to simplify memory allocation */
|
|
#define valloc_pages(var, np) \
|
|
alloc_pages((var).pv_pa, (np)); \
|
|
(var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start;
|
|
|
|
#if 0
|
|
#define alloc_pages(var, np) \
|
|
physical_freeend -= ((np) * PAGE_SIZE); \
|
|
if (physical_freeend < physical_freestart) \
|
|
panic("initarm: out of memory"); \
|
|
(var) = physical_freeend; \
|
|
free_pages -= (np); \
|
|
memset((char *)(var), 0, ((np) * PAGE_SIZE));
|
|
#else
|
|
#define alloc_pages(var, np) \
|
|
(var) = freemempos; \
|
|
memset((char *)(var), 0, ((np) * PAGE_SIZE)); \
|
|
freemempos += (np) * PAGE_SIZE;
|
|
#endif
|
|
|
|
loop1 = 0;
|
|
kernel_l1pt.pv_pa = 0;
|
|
for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
|
|
/* Are we 16KB aligned for an L1 ? */
|
|
if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0
|
|
&& kernel_l1pt.pv_pa == 0) {
|
|
valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
|
|
} else {
|
|
valloc_pages(kernel_pt_table[loop1],
|
|
L2_TABLE_SIZE / PAGE_SIZE);
|
|
++loop1;
|
|
}
|
|
}
|
|
|
|
/* This should never be able to happen but better confirm that. */
|
|
if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
|
|
panic("initarm: Failed to align the kernel page directory");
|
|
|
|
/*
|
|
* Allocate a page for the system page.
|
|
* This page will just contain the system vectors and can be
|
|
* shared by all processes.
|
|
*/
|
|
alloc_pages(systempage.pv_pa, 1);
|
|
|
|
/* Allocate stacks for all modes */
|
|
valloc_pages(irqstack, IRQ_STACK_SIZE);
|
|
valloc_pages(abtstack, ABT_STACK_SIZE);
|
|
valloc_pages(undstack, UND_STACK_SIZE);
|
|
valloc_pages(kernelstack, UPAGES);
|
|
|
|
/* Allocate enough pages for cleaning the Mini-Data cache. */
|
|
KASSERT(xscale_minidata_clean_size <= PAGE_SIZE);
|
|
valloc_pages(minidataclean, 1);
|
|
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
|
|
irqstack.pv_va);
|
|
printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa,
|
|
abtstack.pv_va);
|
|
printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa,
|
|
undstack.pv_va);
|
|
printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa,
|
|
kernelstack.pv_va);
|
|
#endif
|
|
|
|
/*
|
|
* XXX Defer this to later so that we can reclaim the memory
|
|
* XXX used by the RedBoot page tables.
|
|
*/
|
|
alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
|
|
|
|
/*
|
|
* Ok we have allocated physical pages for the primary kernel
|
|
* page tables
|
|
*/
|
|
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
|
|
#endif
|
|
|
|
/*
|
|
* Now we start construction of the L1 page table
|
|
* We start by mapping the L2 page tables into the L1.
|
|
* This means that we can replace L1 mappings later on if necessary
|
|
*/
|
|
l1pagetable = kernel_l1pt.pv_pa;
|
|
|
|
/* Map the L2 pages tables in the L1 page table */
|
|
pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1),
|
|
&kernel_pt_table[KERNEL_PT_SYS]);
|
|
for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
|
|
pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
|
|
&kernel_pt_table[KERNEL_PT_KERNEL + loop]);
|
|
for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
|
|
pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
|
|
&kernel_pt_table[KERNEL_PT_VMDATA + loop]);
|
|
|
|
/* update the top of the kernel VM */
|
|
pmap_curmaxkvaddr =
|
|
KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
|
|
|
|
pmap_link_l2pt(l1pagetable, IXP425_IO_VBASE,
|
|
&kernel_pt_table[KERNEL_PT_IO]);
|
|
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("Mapping kernel\n");
|
|
#endif
|
|
|
|
/* Now we fill in the L2 pagetable for the kernel static code/data */
|
|
{
|
|
extern char etext[], _end[];
|
|
size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE;
|
|
size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE;
|
|
u_int logical;
|
|
|
|
textsize = (textsize + PGOFSET) & ~PGOFSET;
|
|
totalsize = (totalsize + PGOFSET) & ~PGOFSET;
|
|
|
|
logical = 0x00200000; /* offset of kernel in RAM */
|
|
|
|
logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
|
|
physical_start + logical, textsize,
|
|
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
|
|
physical_start + logical, totalsize - textsize,
|
|
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
}
|
|
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("Constructing L2 page tables\n");
|
|
#endif
|
|
|
|
/* Map the stack pages */
|
|
pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
|
|
IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
|
|
ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
|
|
UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
|
|
UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
|
|
pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
|
|
L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
|
|
|
|
for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
|
|
pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
|
|
kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
|
|
}
|
|
|
|
/* Map the Mini-Data cache clean area. */
|
|
xscale_setup_minidata(l1pagetable, minidataclean.pv_va,
|
|
minidataclean.pv_pa);
|
|
|
|
/* Map the vector page. */
|
|
pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
|
|
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
|
|
/*
|
|
* Map the IXP425 registers
|
|
*/
|
|
pmap_devmap_bootstrap(l1pagetable, ixp425_devmap);
|
|
|
|
/*
|
|
* Give the XScale global cache clean code an appropriately
|
|
* sized chunk of unmapped VA space starting at 0xff000000
|
|
* (our device mappings end before this address).
|
|
*/
|
|
xscale_cache_clean_addr = 0xff000000U;
|
|
|
|
/*
|
|
* Now we have the real page tables in place so we can switch to them.
|
|
* Once this is done we will be running with the REAL kernel page
|
|
* tables.
|
|
*/
|
|
|
|
/*
|
|
* Update the physical_freestart/physical_freeend/free_pages
|
|
* variables.
|
|
*/
|
|
{
|
|
extern char _end[];
|
|
|
|
physical_freestart = physical_start +
|
|
(((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) -
|
|
KERNEL_BASE);
|
|
physical_freeend = physical_end;
|
|
free_pages =
|
|
(physical_freeend - physical_freestart) / PAGE_SIZE;
|
|
}
|
|
|
|
/* Switch tables */
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n",
|
|
physical_freestart, free_pages, free_pages);
|
|
printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa);
|
|
#endif
|
|
cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
|
|
setttb(kernel_l1pt.pv_pa);
|
|
cpu_tlb_flushID();
|
|
cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
|
|
|
|
/*
|
|
* Moved from cpu_startup() as data_abort_handler() references
|
|
* this during uvm init
|
|
*/
|
|
proc0paddr = (struct user *)kernelstack.pv_va;
|
|
lwp0.l_addr = proc0paddr;
|
|
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("bootstrap done.\n");
|
|
#endif
|
|
|
|
arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
|
|
|
|
/*
|
|
* Pages were allocated during the secondary bootstrap for the
|
|
* stacks for different CPU modes.
|
|
* We must now set the r13 registers in the different CPU modes to
|
|
* point to these stacks.
|
|
* Since the ARM stacks use STMFD etc. we must set r13 to the top end
|
|
* of the stack memory.
|
|
*/
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("init subsystems: stacks ");
|
|
#endif
|
|
|
|
set_stackptr(PSR_IRQ32_MODE,
|
|
irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
|
|
set_stackptr(PSR_ABT32_MODE,
|
|
abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
|
|
set_stackptr(PSR_UND32_MODE,
|
|
undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
|
|
|
|
/*
|
|
* Well we should set a data abort handler.
|
|
* Once things get going this will change as we will need a proper
|
|
* handler.
|
|
* Until then we will use a handler that just panics but tells us
|
|
* why.
|
|
* Initialisation of the vectors will just panic on a data abort.
|
|
* This just fills in a slighly better one.
|
|
*/
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("vectors ");
|
|
#endif
|
|
data_abort_handler_address = (u_int)data_abort_handler;
|
|
prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
|
|
undefined_handler_address = (u_int)undefinedinstruction_bounce;
|
|
|
|
/* Initialise the undefined instruction handlers */
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("undefined ");
|
|
#endif
|
|
undefined_init();
|
|
|
|
/* Load memory into UVM. */
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("page ");
|
|
#endif
|
|
uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
|
|
uvm_page_physload(atop(physical_freestart), atop(physical_freeend),
|
|
atop(physical_freestart), atop(physical_freeend),
|
|
VM_FREELIST_DEFAULT);
|
|
|
|
/* Boot strap pmap telling it where the kernel page table is */
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("pmap ");
|
|
#endif
|
|
pmap_bootstrap((pd_entry_t *)kernel_l1pt.pv_va, KERNEL_VM_BASE,
|
|
KERNEL_VM_BASE + KERNEL_VM_SIZE);
|
|
|
|
/* Setup the IRQ system */
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("irq ");
|
|
#endif
|
|
ixp425_intr_init();
|
|
#ifdef VERBOSE_INIT_ARM
|
|
printf("\nAll initialize done!\nNow Starting NetBSD, Hear we go!\n");
|
|
#endif
|
|
|
|
#ifdef BOOTHOWTO
|
|
boothowto = BOOTHOWTO;
|
|
#endif
|
|
|
|
#ifdef IPKDB
|
|
/* Initialise ipkdb */
|
|
ipkdb_init();
|
|
if (boothowto & RB_KDB)
|
|
ipkdb_connect(0);
|
|
#endif
|
|
|
|
#if NKSYMS || defined(DDB) || defined(LKM)
|
|
/* Firmware doesn't load symbols. */
|
|
ksyms_init(0, NULL, NULL);
|
|
#endif
|
|
|
|
#ifdef DDB
|
|
db_machine_init();
|
|
if (boothowto & RB_KDB)
|
|
Debugger();
|
|
#endif
|
|
|
|
/* We return the new stack pointer address */
|
|
return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
|
|
}
|
|
|
|
/*
|
|
* consinit
|
|
*/
|
|
void
|
|
consinit(void)
|
|
{
|
|
static int consinit_called;
|
|
static const bus_addr_t addrs[2] = {
|
|
IXP425_UART0_HWBASE, IXP425_UART1_HWBASE
|
|
};
|
|
|
|
if (consinit_called != 0)
|
|
return;
|
|
|
|
consinit_called = 1;
|
|
|
|
pmap_devmap_register(ixp425_devmap);
|
|
|
|
if (comcnattach(&ixp425_a4x_bs_tag, addrs[comcnunit],
|
|
comcnspeed, IXP425_UART_FREQ, COM_TYPE_PXA2x0, comcnmode))
|
|
panic("can't init serial console (UART%d)", comcnunit);
|
|
}
|