File: [local] / sys / arch / jornada / jornada / jornada_machdep.c (download)
Revision 1.2, Sun May 11 09:26:12 2008 UTC (16 years ago) by nbrk
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +1 -1 lines
Sync up my latest modifications related to OpenBSD/jornada.
At this point PCMCIA is not done (this is primary goal since it's only
expansion bus for SA-1110) but some other chip subsystems rather work.
One of most recent problems sit in ported NetBSD pcic driver. It cause memory
abort passing odd addr to bus_space_write_2 (APB transactions are word-wide,
but I try to emulate 2-bytes accesses in bus_space_map for sa1111).
Other problematic/untested areas: sacic, saic. UART driver is a stub and not
really useful.
But even with this problems I have overdone my plans with this porting effort.
|
/* $OpenBSD: armish_machdep.c,v 1.10 2007/05/19 15:49:05 miod Exp $ */
/* $NetBSD: lubbock_machdep.c,v 1.2 2003/07/15 00:25:06 lukem Exp $ */
/*
* Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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 for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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 IQ80321 evaluation
* boards using RedBoot firmware.
*/
/*
* DIP switches:
*
* S19: no-dot: set RB_KDB. enter kgdb session.
* S20: no-dot: set RB_SINGLE. don't go multi user mode.
*/
#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/kcore.h>
#include <uvm/uvm_extern.h>
#include <sys/conf.h>
#include <sys/queue.h>
#include <sys/device.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/kcore.h>
#include <arm/undefined.h>
#include <arm/machdep.h>
#include <arm/sa11x0/sa11x0_reg.h>
#include <arm/sa11x0/sa11x0_var.h>
#include <machine/jornada_reg.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 + 0x10000000)
/*
* The range 0xc1000000 - 0xcfffffff is available for kernel VM space
* Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff
*/
#define KERNEL_VM_SIZE 0x20000000
/*
* 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 = 0;
/* 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;
paddr_t physical_start;
paddr_t physical_freestart;
paddr_t physical_freeend;
paddr_t physical_end;
u_int free_pages;
paddr_t pagetables_start;
int physmem = 0;
/*int debug_flags;*/
#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 systempage;
pv_addr_t irqstack;
pv_addr_t undstack;
pv_addr_t abtstack;
extern pv_addr_t kernelstack;
pv_addr_t minidataclean;
#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;
paddr_t msgbufphys;
extern u_int data_abort_handler_address;
extern u_int prefetch_abort_handler_address;
extern u_int undefined_handler_address;
#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 8
/* L2 table for mapping peripherals */
#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];
extern struct user *proc0paddr;
/* Prototypes */
#define BOOT_STRING_MAGIC 0x4f425344
char bootargs[MAX_BOOT_STRING];
void process_kernel_args(char *);
void consinit(void);
void fakecninit(bus_addr_t paddr);
#ifdef BOOTCONSOLE_COM
int sacomcnattach(bus_space_tag_t bust, bus_addr_t busa, int speed);
void sacomfakecnattach(bus_addr_t addr);
#else /* !BOOTCONSOLE_COM */
#include <arch/jornada/dev/jfbreg.h>
void jfbfakecnattach(bus_addr_t addr);
int jfbcnattach(bus_space_tag_t bust, bus_addr_t busa);
#endif /* BOOTCONSOLE_COM */
#ifndef CONSPEED
#define CONSPEED 115200
#endif
int comcnspeed = CONSPEED;
/*
* void boot(int howto, char *bootstr)
*
* Reboots the system
*
* Deal with any syncing, unmounting, dumping and shutdown hooks,
* then reset the CPU.
*/
void board_reset(void);
void board_powerdown(void);
void
boot(int howto)
{
/*
* If we are still cold then hit the air brakes
* and crash to earth fast
*/
if (cold) {
doshutdownhooks();
if ((howto & (RB_HALT | RB_USERREQ)) != RB_USERREQ) {
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cngetc();
}
#ifndef DO_NOT_RESET_SA1
printf("rebooting...\n");
delay(60000);
cpu_reset();
printf("reboot failed; spinning\n");
#else /* DO_NOT_RESET_SA1 */
printf("will not reset CPU; spinning\n");
#endif /* !DO_NOT_RESET_SA1 */
while(1);
/*NOTREACHED*/
}
/* 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 filesystem has
* been unmounted.
*/
if (!(howto & RB_NOSYNC))
bootsync(howto);
/* 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) {
if (howto & RB_POWERDOWN) {
/* TODO */
//board_powerdown();
printf("WARNING: powerdown failed!\n");
}
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cngetc();
}
#ifndef DO_NOT_RESET_SA1
printf("rebooting...\n");
/* TODO board_reset */
cpu_reset();
printf("reboot failed; spinning\n");
#else /* DO_NOT_RESET_SA1 */
printf("will not reset CPU; spinning\n");
#endif /* !DO_NOT_RESET_SA1 */
while(1)
;
/*NOTREACHED*/
}
/*
* Mapping table for core kernel memory. These areas are mapped in
* init time at fixed virtual address with section mappings.
*/
const struct pmap_devmap jornada_devmap[] = {
/*
* Map the on-board devices VA == PA so that we can access them
* with the MMU on or off.
*/
{
SACOM3_BASE,
SACOM3_HW_BASE,
0x24 /* SACOM3_SIZE, */,
VM_PROT_READ|VM_PROT_WRITE,
PTE_NOCACHE,
},
{
SAIPIC_VBASE,
SAIPIC_BASE,
0x24 /* SAIPIC_SIZE, */,
VM_PROT_READ|VM_PROT_WRITE,
PTE_NOCACHE,
},
#ifndef BOOTCONSOLE_COM
{
JFB_VBASE,
JFB_BASE,
JFB_SIZE,
VM_PROT_READ|VM_PROT_WRITE,
PTE_NOCACHE,
},
#endif /* !BOOTCONSOLE_COM */
{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 cpu_kcore_hdr_t cpu_kcore_hdr;
int loop;
int loop1;
u_int l1pagetable;
pv_addr_t kernel_l1pt;
paddr_t memstart;
psize_t memsize;
extern u_int32_t esym; /* &_end if no symbols are loaded */
/* get ready for splfoo() */
sa11x0_intr_bootstrap(SAIPIC_BASE);
pmap_devmap_register(jornada_devmap);
/* setup a serial console for very early boot */
#ifdef BOOTCONSOLE_COM
fakecninit(SACOM3_HW_BASE);
#else
fakecninit(JFB_BASE);
#endif
/*
* Heads up ... Setup the CPU / MMU / TLB functions
*/
if (set_cpufuncs())
panic("cpu not recognized!");
/*
* Examine the boot args string for options we need to know about
* now.
*/
/* XXX should really be done after setting up the console, but we
* XXX need to parse the console selection flags right now. */
process_kernel_args((char *)0xc0200000 - MAX_BOOT_STRING - 1);
#ifdef RAMDISK_HOOKS
boothowto |= RB_DFLTROOT;
#endif /* RAMDISK_HOOKS */
/* Talk to the user */
printf("\nOpenBSD/jornada booting ...\n");
#define VERBOSE_INIT_ARM
/* Ugly hardcode DRAM bounds */
/* TODO */
memstart = (paddr_t)0xc0000000;
memsize = (psize_t)(32 * 1024 * 1024);
//#define DEBUG
#ifdef DEBUG
printf("initarm: Configuring system ...\n");
#endif
/* Fake bootconfig structure for the benefit of pmap.c */
/* XXX must make the memory description h/w independant */
bootconfig.dramblocks = 1;
bootconfig.dram[0].address = memstart;
bootconfig.dram[0].pages = memsize / PAGE_SIZE;
/*
* Set up the variables that define the availablilty of
* physical memory. For now, we're going to set
* physical_freestart to 0xc0200000 (where the kernel
* was loaded), and allocate the memory we need downwards.
* 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 = 0xc0200000UL;
physical_freeend = physical_end;
physmem = (physical_end - physical_start) / PAGE_SIZE;
#if defined(DEBUG) || defined(VERBOSE_INIT_ARM)
/* Tell the user about the memory */
printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
physical_start, physical_end - 1);
#endif
/*
* Okay, the kernel starts 2MB in from the bottom of physical
* memory. We are going to allocate our bootstrap pages downwards
* from there.
*
* We need to allocate some fixed page tables to get the kernel
* going. We allocate one page directory and a number of page
* tables and store the physical addresses in the kernel_pt_table
* array.
*
* The kernel page directory must be on a 16K boundary. The page
* tables must be on 4K boundaries. What we do is allocate the
* page directory on the first 16K boundary that we encounter, and
* the page tables on 4K boundaries otherwise. Since we allocate
* at least 3 L2 page tables, we are guaranteed to encounter at
* least one 16K aligned region.
*/
#ifdef VERBOSE_INIT_ARM
printf("Allocating page tables\n");
#endif
free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE;
#ifdef VERBOSE_INIT_ARM
printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n",
physical_freestart, free_pages, free_pages);
#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;
#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));
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 mapped to V0x00000000
* 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);
#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);
/*
* 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;
/*
* 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;
#ifdef HIGH_VECT
/* 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]);
#else
/* Map the L2 pages tables in the L1 page table */
pmap_link_l2pt(l1pagetable, 0x00000000,
&kernel_pt_table[KERNEL_PT_SYS]);
#endif
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]);
/* link devices */
pmap_link_l2pt(l1pagetable, 0xfd000000/* XXX XXX */,
&kernel_pt_table[KERNEL_PT_IO]);
/* 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 static code/data
* and the symbol table. */
{
extern char etext[];
#ifdef VERBOSE_INIT_ARM
extern char _end[];
#endif
size_t textsize = (u_int32_t) etext - KERNEL_TEXT_BASE;
size_t totalsize = esym - KERNEL_TEXT_BASE;
u_int logical;
#ifdef VERBOSE_INIT_ARM
printf("kernelsize text %x total %x end %x esym %x\n",
textsize, totalsize, _end, esym);
#endif
textsize = round_page(textsize);
totalsize = round_page(totalsize);
logical = 0x00200000; /* offset of kernel in RAM */
/* Update dump information */
cpu_kcore_hdr.kernelbase = KERNEL_BASE;
cpu_kcore_hdr.kerneloffs = logical;
cpu_kcore_hdr.staticsize = totalsize;
logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
physical_start + logical, textsize,
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
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);
}
pmap_map_chunk(l1pagetable, sa1_cache_clean_addr, 0xe0000000,
CPU_SA110_CACHE_CLEAN_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
/* Map the vector page. */
#ifdef HIGH_VECT
pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
#else
pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa,
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
#endif
/* XXX XXX */
pmap_devmap_bootstrap(l1pagetable, jornada_devmap);
/*
* 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.
*/
{
physical_freestart = physical_start - KERNEL_BASE +
round_page(esym);
physical_freeend = physical_end;
free_pages =
(physical_freeend - physical_freestart) / PAGE_SIZE;
}
#ifdef VERBOSE_INIT_ARM
printf("physical_freestart %x end %x\n", physical_freestart,
physical_freeend);
#endif
/* be a client to all domains */
cpu_domains(0x55555555);
/* 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
/* set new intc register address so that splfoo() doesn't
touch illegal address. */
sa11x0_intr_bootstrap(SAIPIC_VBASE);
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));
/* update with our virtual address */
#ifdef BOOTCONSOLE_COM
fakecninit(SACOM3_BASE);
#else
fakecninit(JFB_VBASE);
#endif /* BOOTCONSOLE_COM */
/*
* Moved from cpu_startup() as data_abort_handler() references
* this during uvm init
*/
proc0paddr = (struct user *)kernelstack.pv_va;
proc0.p_addr = proc0paddr;
#ifdef VERBOSE_INIT_ARM
printf("bootstrap done.\n");
#endif
#ifdef HIGH_VECT
arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
#else
arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
#endif
/*
* 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 slightly 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);
/* Update dump information */
cpu_kcore_hdr.pmap_kernel_l1 = (u_int32_t)pmap_kernel()->pm_l1;
cpu_kcore_hdr.pmap_kernel_l2 = (u_int32_t)&(pmap_kernel()->pm_l2);
/* Setup the IRQ system */
#ifdef VERBOSE_INIT_ARM
printf("irq ");
#endif
sa11x0_init_interrupt_masks();
#ifdef VERBOSE_INIT_ARM
printf("done.\n");
#endif
#ifdef DDB
db_machine_init();
/* Firmware doesn't load symbols. */
ddb_init();
if (boothowto & RB_KDB)
Debugger();
#endif
/* We return the new stack pointer address */
return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
}
void
process_kernel_args(char *args)
{
char *cp = args;
if (cp == NULL || *(int *)cp != BOOT_STRING_MAGIC) {
boothowto = RB_AUTOBOOT;
return;
}
/* Eat the cookie */
*(int *)cp = 0;
cp += sizeof(int);
boothowto = 0;
/* Make a local copy of the bootargs */
strncpy(bootargs, cp, MAX_BOOT_STRING - sizeof(int));
cp = bootargs;
boot_file = bootargs;
/* Skip the kernel image filename */
while (*cp != ' ' && *cp != 0)
++cp;
if (*cp != 0)
*cp++ = 0;
while (*cp == ' ')
++cp;
boot_args = cp;
#if 0
printf("bootfile: %s\n", boot_file);
printf("bootargs: %s\n", boot_args);
#endif
/* Setup pointer to boot flags */
while (*cp != '-')
if (*cp++ == '\0')
return;
for (;*++cp;) {
int fl;
fl = 0;
switch(*cp) {
case 'a':
fl |= RB_ASKNAME;
break;
case 'c':
fl |= RB_CONFIG;
break;
case 'd':
fl |= RB_KDB;
break;
case 's':
fl |= RB_SINGLE;
break;
default:
printf("unknown option `%c'\n", *cp);
break;
}
boothowto |= fl;
}
}
void
consinit(void)
{
/* XXX defer console attachment to autoconf */
return;
}
void
fakecninit(bus_addr_t addr)
{
/*
* Early console initialization.
* XXX cn_getc stuff
*/
switch(addr) {
#ifdef BOOTCONSOLE_COM
case SACOM3_HW_BASE:
case SACOM3_BASE:
sacomfakecnattach(addr);
break;
#else
case JFB_BASE:
case JFB_VBASE:
jfbfakecnattach(addr);
break;
#endif /* BOOTCONSOLE_COM */
default:
panic("serial console not configured");
}
}
void
board_startup(void)
{
if (boothowto & RB_CONFIG) {
#ifdef BOOT_CONFIG
user_config();
#else
printf("kernel does not support -c; continuing..\n");
#endif
}
}
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