NetBSD-5.0.2/sys/arch/hpcarm/hpcarm/hpc_machdep.c
/* $NetBSD: hpc_machdep.c,v 1.86 2008/06/13 13:24:10 rafal Exp $ */
/*
* Copyright (c) 1994-1998 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* 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 Brini.
* 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 BRINI ``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 BRINI 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 dependent functions for kernel setup.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hpc_machdep.c,v 1.86 2008/06/13 13:24:10 rafal Exp $");
#include "opt_ddb.h"
#include "opt_pmap_debug.h"
#include "fs_nfs.h"
#include "ksyms.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/reboot.h>
#include <sys/proc.h>
#include <sys/msgbuf.h>
#include <sys/exec.h>
#include <sys/ksyms.h>
#include <sys/boot_flag.h>
#include <sys/conf.h> /* XXX for consinit related hacks */
#if NKSYMS || defined(DDB) || defined(LKM)
#include <machine/db_machdep.h>
#include <ddb/db_sym.h>
#include <ddb/db_extern.h>
#ifndef DB_ELFSIZE
#error Must define DB_ELFSIZE!
#endif
#define ELFSIZE DB_ELFSIZE
#include <sys/exec_elf.h>
#endif
#include <uvm/uvm.h>
#include <arm/sa11x0/sa11x0_reg.h>
#include <arm/cpuconf.h>
#include <arm/undefined.h>
#include <machine/bootconfig.h>
#include <machine/bootinfo.h>
#include <machine/cpu.h>
#include <machine/frame.h>
#include <machine/intr.h>
#include <machine/io.h>
#include <machine/platid.h>
#include <machine/rtc.h>
#include <machine/signal.h>
#include <dev/cons.h>
#include <dev/hpc/apm/apmvar.h>
#include <dev/hpc/bicons.h>
#ifdef NFS
#include <sys/mount.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsmount.h>
#endif /* NFS */
/* Kernel text starts 256K in from the bottom of the kernel address space. */
#define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00040000)
#define KERNEL_VM_BASE (KERNEL_BASE + 0x00C00000)
#define KERNEL_VM_SIZE 0x05000000
/*
* Address to call from cpu_reset() to reset the machine.
* This is machine architecture dependent as it varies depending
* on where the ROM appears when you turn the MMU off.
*/
u_int cpu_reset_address = 0;
/* Define various stack sizes in pages */
#define IRQ_STACK_SIZE 1
#define ABT_STACK_SIZE 1
#define UND_STACK_SIZE 1
BootConfig bootconfig; /* Boot config storage */
struct bootinfo *bootinfo, bootinfo_storage;
static char booted_kernel_storage[80];
char *booted_kernel = booted_kernel_storage;
paddr_t physical_start;
paddr_t physical_freestart;
paddr_t physical_freeend;
paddr_t physical_end;
int physmem = 0;
#ifndef PMAP_STATIC_L1S
int max_processes = 64; /* Default number */
#endif /* !PMAP_STATIC_L1S */
/* Physical and virtual addresses for some global pages */
pv_addr_t irqstack;
pv_addr_t undstack;
pv_addr_t abtstack;
pv_addr_t kernelstack;
char *boot_args = NULL;
char boot_file[16];
vaddr_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 /* PMAP_DEBUG */
#define KERNEL_PT_VMEM 0 /* Page table for mapping video memory */
#define KERNEL_PT_SYS 1 /* Page table for mapping proc0 zero page */
#define KERNEL_PT_IO 2 /* Page table for mapping IO */
#define KERNEL_PT_KERNEL 3 /* Page table for mapping kernel */
#define KERNEL_PT_KERNEL_NUM 4
#define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL+KERNEL_PT_KERNEL_NUM)
/* Page tables for mapping kernel VM */
#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;
#define CPU_SA110_CACHE_CLEAN_SIZE (0x4000 * 2)
extern unsigned int sa1_cache_clean_addr;
extern unsigned int sa1_cache_clean_size;
static vaddr_t sa1_cc_base;
/* Mode dependent sleep function holder */
void (*__sleep_func)(void *);
void *__sleep_ctx;
/* Non-buffered non-cacheable memory needed to enter idle mode */
extern vaddr_t sa11x0_idle_mem;
/* Prototypes */
void data_abort_handler(trapframe_t *);
void prefetch_abort_handler(trapframe_t *);
void undefinedinstruction_bounce(trapframe_t *);
void dumpsys(void);
u_int cpu_get_control(void);
u_int initarm(int, char **, struct bootinfo *);
#ifdef DEBUG_BEFOREMMU
static void fakecninit(void);
#endif
#ifdef BOOT_DUMP
static void dumppages(char *, int);
#endif
/*
* Reboots the system.
*
* Deal with any syncing, unmounting, dumping and shutdown hooks,
* then reset the CPU.
*/
void
cpu_reboot(int howto, char *bootstr)
{
/*
* If we are still cold then hit the air brakes
* and crash to earth fast.
*/
if (cold) {
doshutdownhooks();
printf("Halted while still in the ICE age.\n");
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cngetc();
printf("rebooting...\n");
cpu_reset();
/* NOTREACHED */
}
/* Reset the sleep function. */
__sleep_func = NULL;
__sleep_ctx = NULL;
/* Disable console buffering. */
cnpollc(1);
/*
* 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
* file system has been unmounted.
*/
if (!(howto & RB_NOSYNC))
bootsync();
/* Say NO to interrupts. */
(void)splhigh();
/* Do a dump if requested. */
if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
dumpsys();
/* Run any shutdown hooks. */
doshutdownhooks();
/* Make sure IRQs 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");
cpu_reset();
/* NOTREACHED */
}
/* Number of DRAM pages which are installed */
/* Units are 4K pages, so 8192 is 32 MB of memory */
#ifndef DRAM_PAGES
#define DRAM_PAGES 8192
#endif
/*
* Static device mappings. These peripheral registers are mapped at
* fixed virtual addresses very early in initarm() so that we can use
* them while booting the kernel and stay at the same address
* throughout whole kernel's life time.
*/
static const struct pmap_devmap sa11x0_devmap[] = {
/* Physical/virtual address for UART #3. */
{
SACOM3_VBASE,
SACOM3_BASE,
0x24,
VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE
},
{ 0, 0, 0, 0, 0 }
};
/*
* 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.
* Initializing the physical console so characters can be printed.
* Setting up page tables for the kernel.
*/
u_int
initarm(int argc, char **argv, struct bootinfo *bi)
{
u_int kerneldatasize, symbolsize;
u_int l1pagetable;
vaddr_t freemempos;
vsize_t pt_size;
int loop, i;
#if NKSYMS || defined(DDB) || defined(LKM)
Elf_Shdr *sh;
#endif
__sleep_func = NULL;
__sleep_ctx = NULL;
/*
* Heads up ... Setup the CPU / MMU / TLB functions.
*/
set_cpufuncs();
IRQdisable;
#ifdef DEBUG_BEFOREMMU
/*
* At this point, we cannot call real consinit().
* Just call a faked up version of consinit(), which does the thing
* with MMU disabled.
*/
fakecninit();
#endif
/*
* XXX for now, overwrite bootconfig to hardcoded values.
* XXX kill bootconfig and directly call uvm_physload
*/
bootconfig.dram[0].address = 0xc0000000;
bootconfig.dram[0].pages = DRAM_PAGES;
bootconfig.dramblocks = 1;
kerneldatasize = (uint32_t)&end - (uint32_t)KERNEL_TEXT_BASE;
symbolsize = 0;
#if NKSYMS || defined(DDB) || defined(LKM)
if (!memcmp(&end, "\177ELF", 4)) {
sh = (Elf_Shdr *)((char *)&end + ((Elf_Ehdr *)&end)->e_shoff);
loop = ((Elf_Ehdr *)&end)->e_shnum;
for (; loop; loop--, sh++)
if (sh->sh_offset > 0 &&
(sh->sh_offset + sh->sh_size) > symbolsize)
symbolsize = sh->sh_offset + sh->sh_size;
}
#endif
printf("kernsize=0x%x\n", kerneldatasize);
kerneldatasize += symbolsize;
kerneldatasize = ((kerneldatasize - 1) & ~(PAGE_SIZE * 4 - 1)) +
PAGE_SIZE * 8;
/* parse kernel args */
boothowto = 0;
boot_file[0] = '\0';
strncpy(booted_kernel_storage, argv[0], sizeof(booted_kernel_storage));
for (i = 1; i < argc; i++) {
char *cp = argv[i];
switch (*cp) {
case 'b':
/* boot device: -b=sd0 etc. */
cp = cp + 2;
#ifdef NFS
if (strcmp(cp, "nfs") == 0)
mountroot = nfs_mountroot;
else
strncpy(boot_file, cp, sizeof(boot_file));
#else /* !NFS */
strncpy(boot_file, cp, sizeof(boot_file));
#endif /* !NFS */
break;
default:
BOOT_FLAG(*cp, boothowto);
break;
}
}
/* copy bootinfo into known kernel space */
bootinfo_storage = *bi;
bootinfo = &bootinfo_storage;
#ifdef BOOTINFO_FB_WIDTH
bootinfo->fb_line_bytes = BOOTINFO_FB_LINE_BYTES;
bootinfo->fb_width = BOOTINFO_FB_WIDTH;
bootinfo->fb_height = BOOTINFO_FB_HEIGHT;
bootinfo->fb_type = BOOTINFO_FB_TYPE;
#endif
/*
* hpcboot has loaded me with MMU disabled.
* So create kernel page tables and enable MMU.
*/
/*
* Set up the variables that define the availability of physcial
* memory.
*/
physical_start = bootconfig.dram[0].address;
physical_freestart = physical_start
+ (KERNEL_TEXT_BASE - KERNEL_BASE) + kerneldatasize;
physical_end = bootconfig.dram[bootconfig.dramblocks - 1].address
+ bootconfig.dram[bootconfig.dramblocks - 1].pages * PAGE_SIZE;
physical_freeend = physical_end;
for (loop = 0; loop < bootconfig.dramblocks; ++loop)
physmem += bootconfig.dram[loop].pages;
/* XXX handle UMA framebuffer memory */
/* Use the first 256kB to allocate things */
freemempos = KERNEL_BASE;
memset((void *)KERNEL_BASE, 0, KERNEL_TEXT_BASE - KERNEL_BASE);
/*
* Right. We have the bottom meg of memory mapped to 0x00000000
* so was can get at it. The kernel will occupy the start of it.
* After the kernel/args we allocate some of the fixed page tables
* we need to get the system going.
* We allocate one page directory and NUM_KERNEL_PTS page tables
* and store the physical addresses in the kernel_pt_table array.
* Must remember that neither the page L1 or L2 page tables are the
* same size as a page !
*
* Ok, the next bit of physical allocate may look complex but it is
* simple really. I have done it like this so that no memory gets
* wasted during the allocate of various pages and tables that are
* all different sizes.
* The start address will be page aligned.
* We allocate the kernel page directory on the first free 16KB
* boundary we find.
* We allocate the kernel page tables on the first 1KB boundary we
* find. We allocate at least 9 PT's (12 currently). This means
* that in the process we KNOW that we will encounter at least one
* 16KB boundary.
*
* Eventually if the top end of the memory gets used for process L1
* page tables the kernel L1 page table may be moved up there.
*/
#ifdef VERBOSE_INIT_ARM
printf("Allocating page tables\n");
#endif
/* Define a macro to simplify memory allocation */
#define valloc_pages(var, np) \
(var).pv_pa = (var).pv_va = freemempos; \
freemempos += (np) * PAGE_SIZE;
#define alloc_pages(var, np) \
(var) = freemempos; \
freemempos += (np) * PAGE_SIZE;
valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
alloc_pages(kernel_pt_table[loop].pv_pa,
L2_TABLE_SIZE / PAGE_SIZE);
kernel_pt_table[loop].pv_va = kernel_pt_table[loop].pv_pa;
}
/*
* Allocate a page for the system page mapped to V0x00000000
* This page will just contain the system vectors and can be
* shared by all processes.
*/
valloc_pages(systempage, 1);
pt_size = round_page(freemempos) - KERNEL_BASE;
/* 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);
#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
alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
/*
* XXX Actually, we only need virtual space and don't need
* XXX physical memory for sa110_cc_base and sa11x0_idle_mem.
*/
/*
* XXX totally stuffed hack to work round problems introduced
* in recent versions of the pmap code. Due to the calls used there
* we cannot allocate virtual memory during bootstrap.
*/
for (;;) {
alloc_pages(sa1_cc_base, 1);
if (!(sa1_cc_base & (CPU_SA110_CACHE_CLEAN_SIZE - 1)))
break;
}
{
vaddr_t dummy;
alloc_pages(dummy, CPU_SA110_CACHE_CLEAN_SIZE / PAGE_SIZE - 1);
}
sa1_cache_clean_addr = sa1_cc_base;
sa1_cache_clean_size = CPU_SA110_CACHE_CLEAN_SIZE / 2;
alloc_pages(sa11x0_idle_mem, 1);
/*
* Ok, we have allocated physical pages for the primary kernel
* page tables.
*/
#ifdef VERBOSE_INIT_ARM
printf("Creating L1 page table\n");
#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, 0x00000000,
&kernel_pt_table[KERNEL_PT_SYS]);
#define SAIPIO_BASE 0xd0000000 /* XXX XXX */
pmap_link_l2pt(l1pagetable, SAIPIO_BASE,
&kernel_pt_table[KERNEL_PT_IO]);
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);
#ifdef VERBOSE_INIT_ARM
printf("Mapping kernel\n");
#endif
/* Now we fill in the L2 pagetable for the kernel code/data */
/*
* XXX there is no ELF header to find RO region.
* XXX What should we do?
*/
#if 0
if (N_GETMAGIC(kernexec[0]) == ZMAGIC) {
logical = pmap_map_chunk(l1pagetable, KERNEL_TEXT_BASE,
physical_start, kernexec->a_text,
VM_PROT_READ, PTE_CACHE);
logical += pmap_map_chunk(l1pagetable,
KERNEL_TEXT_BASE + logical, physical_start + logical,
kerneldatasize - kernexec->a_text,
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
} else
#endif
pmap_map_chunk(l1pagetable, KERNEL_TEXT_BASE,
KERNEL_TEXT_BASE, kerneldatasize,
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);
/* Map page tables */
pmap_map_chunk(l1pagetable, KERNEL_BASE, KERNEL_BASE, pt_size,
VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE);
/* Map a page for entering idle mode */
pmap_map_entry(l1pagetable, sa11x0_idle_mem, sa11x0_idle_mem,
VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE);
/* Map the vector page. */
pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa,
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
/* Map the statically mapped devices. */
pmap_devmap_bootstrap(l1pagetable, sa11x0_devmap);
pmap_map_chunk(l1pagetable, sa1_cache_clean_addr, 0xe0000000,
CPU_SA110_CACHE_CLEAN_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
/*
* 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.
*/
printf("done.\n");
/*
* 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.
*/
printf("init subsystems: stacks ");
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);
#ifdef PMAP_DEBUG
if (pmap_debug_level >= 0)
printf("kstack V%08lx P%08lx\n", kernelstack.pv_va,
kernelstack.pv_pa);
#endif /* PMAP_DEBUG */
/*
* 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.
* Initialization of the vectors will just panic on a data abort.
* This just fills in a slightly better one.
*/
printf("vectors ");
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;
printf("%08x %08x %08x\n", data_abort_handler_address,
prefetch_abort_handler_address, undefined_handler_address);
/* Initialize the undefined instruction handlers */
printf("undefined ");
undefined_init();
/* Set the page table address. */
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 BOOT_DUMP
dumppages((char *)0xc0000000, 16 * PAGE_SIZE);
dumppages((char *)0xb0100000, 64); /* XXX */
#endif
/* Enable MMU, I-cache, D-cache, write buffer. */
cpufunc_control(0x337f, 0x107d);
arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
consinit();
#ifdef VERBOSE_INIT_ARM
printf("freemempos=%08lx\n", freemempos);
printf("MMU enabled. control=%08x\n", cpu_get_control());
#endif
/* Load memory into UVM. */
uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
for (loop = 0; loop < bootconfig.dramblocks; loop++) {
paddr_t dblk_start = (paddr_t)bootconfig.dram[loop].address;
paddr_t dblk_end = dblk_start
+ (bootconfig.dram[loop].pages * PAGE_SIZE);
if (dblk_start < physical_freestart)
dblk_start = physical_freestart;
if (dblk_end > physical_freeend)
dblk_end = physical_freeend;
uvm_page_physload(atop(dblk_start), atop(dblk_end),
atop(dblk_start), atop(dblk_end), VM_FREELIST_DEFAULT);
}
/* Boot strap pmap telling it where the kernel page table is */
pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE);
#ifdef BOOT_DUMP
dumppages((char *)kernel_l1pt.pv_va, 16);
#endif
#ifdef DDB
db_machine_init();
#endif
#if NKSYMS || defined(DDB) || defined(LKM)
ksyms_init(symbolsize, ((int *)&end), ((char *)&end) + symbolsize);
#endif
printf("kernsize=0x%x", kerneldatasize);
printf(" (including 0x%x symbols)\n", symbolsize);
#ifdef DDB
if (boothowto & RB_KDB)
Debugger();
#endif /* DDB */
if (bootinfo->magic == BOOTINFO_MAGIC) {
platid.dw.dw0 = bootinfo->platid_cpu;
platid.dw.dw1 = bootinfo->platid_machine;
}
/* We return the new stack pointer address */
return (kernelstack.pv_va + USPACE_SVC_STACK_TOP);
}
void
machine_sleep(void)
{
if (__sleep_func != NULL)
__sleep_func(__sleep_ctx);
}
void
machine_standby(void)
{
}
void
consinit(void)
{
static int consinit_called = 0;
if (consinit_called != 0)
return;
consinit_called = 1;
if (bootinfo->bi_cnuse == BI_CNUSE_SERIAL)
cninit();
else {
/*
* Nothing to do here. Console initialization is done at
* autoconf device attach time.
*/
}
}
#ifdef DEBUG_BEFOREMMU
cons_decl(sacom);
static void
fakecninit(void)
{
static struct consdev fakecntab = cons_init(sacom);
cn_tab = &fakecntab;
(*cn_tab->cn_init)(0);
cn_tab->cn_pri = CN_REMOTE;
}
#endif
#ifdef BOOT_DUMP
static void
dumppages(char *start, int nbytes)
{
char *p = start;
char *p1;
int i;
for (i = nbytes; i > 0; i -= 16, p += 16) {
for (p1 = p + 15; p != p1; p1--) {
if (*p1)
break;
}
if (!*p1)
continue;
printf("%08x %02x %02x %02x %02x %02x %02x %02x %02x"
" %02x %02x %02x %02x %02x %02x %02x %02x\n",
(unsigned int)p,
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
}
}
#endif