/* $OpenBSD: zaurus_machdep.c,v 1.27 2007/05/19 15:49:06 miod Exp $ */
/* $NetBSD: lubbock_machdep.c,v 1.2 2003/07/15 00:25:06 lukem Exp $ */
/*
* Copyright (c) 2002, 2003 Genetec Corporation. All rights reserved.
* Written by Hiroyuki Bessho for Genetec Corporation.
*
* 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. The name of Genetec Corporation may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``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 GENETEC CORPORATION
* 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 DBPXA250 evaluation board (a.k.a. Lubbock).
* Based on iq80310_machhdep.c
*/
/*
* Copyright (c) 2001 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 IQ80310 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 <dev/ic/smc91cxxreg.h>
#include <machine/db_machdep.h>
#include <ddb/db_sym.h>
#include <ddb/db_extern.h>
#ifdef KGDB
#include <sys/kgdb.h>
#endif
#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/xscale/pxa2x0reg.h>
#include <arm/xscale/pxa2x0var.h>
#include <arm/xscale/pxa2x0_gpio.h>
#include <arm/sa11x0/sa1111_reg.h>
#include <machine/zaurus_reg.h>
#include <machine/zaurus_var.h>
#include <zaurus/dev/zaurus_scoopreg.h>
#include "apm.h"
#if NAPM > 0
#include <zaurus/dev/zaurus_apm.h>
#endif
#include "wsdisplay.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 + 0x04000000)
/*
* 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
*/
#define KERNEL_VM_SIZE 0x10000000
/*
* 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
int zaurusmod;
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;
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;
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 /* Page table for mapping proc0 zero page */
#define KERNEL_PT_KERNEL 1 /* Page table for mapping kernel */
#define KERNEL_PT_KERNEL_NUM 32
#define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL+KERNEL_PT_KERNEL_NUM)
/* Page tables for mapping kernel VM */
#define KERNEL_PT_VMDATA_NUM 8 /* start with 32MB 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 early_clkman(u_int, int);
void kgdb_port_init(void);
void change_clock(uint32_t v);
bs_protos(bs_notimpl);
#include "com.h"
#if NCOM > 0
#include <dev/ic/comvar.h>
#include <dev/ic/comreg.h>
#endif
#ifndef CONSPEED
#define CONSPEED B9600 /* What RedBoot uses */
#endif
#ifndef CONMODE
#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
#endif
int comcnspeed = CONSPEED;
int comcnmode = CONMODE;
/*
* void boot(int howto, char *bootstr)
*
* Reboots the system
*
* Deal with any syncing, unmounting, dumping and shutdown hooks,
* then reset the CPU.
*/
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();
}
printf("rebooting...\n");
delay(6000000);
#if NAPM > 0
zapm_restart();
#endif
printf("reboot failed; spinning\n");
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 NAPM > 0
if (howto & RB_POWERDOWN) {
printf("\nAttempting to power down...\n");
delay(6000000);
zapm_poweroff();
}
#endif
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cngetc();
}
printf("rebooting...\n");
delay(6000000);
#if NAPM > 0
zapm_restart();
#endif
printf("reboot failed; spinning\n");
while(1);
/*NOTREACHED*/
}
static __inline
pd_entry_t *
read_ttb(void)
{
long ttb;
__asm __volatile("mrc p15, 0, %0, c2, c0, 0" : "=r" (ttb));
return (pd_entry_t *)(ttb & ~((1<<14)-1));
}
/*
* Mapping table for core kernel memory. These areas are mapped in
* init time at fixed virtual address with section mappings.
*/
struct l1_sec_map {
vaddr_t va;
vaddr_t pa;
vsize_t size;
int flags;
} l1_sec_table[] = {
{
ZAURUS_GPIO_VBASE,
PXA2X0_GPIO_BASE,
PXA2X0_GPIO_SIZE,
PTE_NOCACHE,
},
{
ZAURUS_CLKMAN_VBASE,
PXA2X0_CLKMAN_BASE,
PXA2X0_CLKMAN_SIZE,
PTE_NOCACHE,
},
{
ZAURUS_INTCTL_VBASE,
PXA2X0_INTCTL_BASE,
PXA2X0_INTCTL_SIZE,
PTE_NOCACHE,
},
{
ZAURUS_SCOOP0_VBASE,
C3000_SCOOP0_BASE,
SCOOP_SIZE,
PTE_NOCACHE,
},
{
ZAURUS_SCOOP1_VBASE,
trunc_page(C3000_SCOOP1_BASE),
round_page(SCOOP_SIZE),
PTE_NOCACHE,
},
{0, 0, 0, 0,}
};
static void
map_io_area(paddr_t pagedir)
{
int loop;
/*
* Map devices we can map w/ section mappings.
*/
loop = 0;
while (l1_sec_table[loop].size) {
vsize_t sz;
#define VERBOSE_INIT_ARM
#ifdef VERBOSE_INIT_ARM
printf("%08lx -> %08lx @ %08lx\n", l1_sec_table[loop].pa,
l1_sec_table[loop].pa + l1_sec_table[loop].size - 1,
l1_sec_table[loop].va);
#endif
for (sz = 0; sz < l1_sec_table[loop].size; sz += L1_S_SIZE)
pmap_map_section(pagedir, l1_sec_table[loop].va + sz,
l1_sec_table[loop].pa + sz,
VM_PROT_READ|VM_PROT_WRITE,
l1_sec_table[loop].flags);
++loop;
}
}
/*
* simple memory mapping function used in early bootstrap stage
* before pmap is initialized.
* size and cacheability are ignored and map one section with nocache.
*/
static vaddr_t section_free = ZAURUS_VBASE_FREE;
static int
bootstrap_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
int cacheable, bus_space_handle_t *bshp)
{
u_long startpa;
vaddr_t va;
pd_entry_t *pagedir = read_ttb();
/* This assumes PA==VA for page directory */
va = section_free;
section_free += L1_S_SIZE;
startpa = trunc_page(bpa);
pmap_map_section((vaddr_t)pagedir, va, startpa,
VM_PROT_READ | VM_PROT_WRITE, PTE_NOCACHE);
cpu_tlb_flushD();
*bshp = (bus_space_handle_t)(va + (bpa - startpa));
return(0);
}
static void
copy_io_area_map(pd_entry_t *new_pd)
{
pd_entry_t *cur_pd = read_ttb();
vaddr_t va;
for (va = ZAURUS_IO_AREA_VBASE;
(cur_pd[va>>L1_S_SHIFT] & L1_TYPE_MASK) == L1_TYPE_S;
va += L1_S_SIZE) {
new_pd[va>>L1_S_SHIFT] = cur_pd[va>>L1_S_SHIFT];
if (va == (0 - L1_S_SIZE))
break; /* STUPID */
}
}
/* XXX tidy up! */
void green_on(int virt);
void
green_on(int virt)
{
/* clobber green led p */
volatile u_int16_t *p;
if (virt)
p = (u_int16_t *)(ZAURUS_SCOOP0_VBASE+SCOOP_GPWR);
else
p = (u_int16_t *)(C3000_SCOOP0_BASE+SCOOP_GPWR);
*p = *p | (1<<SCOOP0_LED_GREEN);
}
void irda_on(int virt);
void
irda_on(int virt)
{
/* clobber IrDA led p */
volatile u_int16_t *p;
/* XXX scoop1 registers are not page-aligned! */
int ofs = C3000_SCOOP1_BASE - trunc_page(C3000_SCOOP1_BASE);
if (virt)
p = (u_int16_t *)(ZAURUS_SCOOP1_VBASE+ofs+SCOOP_GPWR);
else
p = (u_int16_t *)(C3000_SCOOP1_BASE+SCOOP_GPWR);
*p = *p & ~(1<<SCOOP1_IR_ON);
}
#if 0
void sysprobe(void);
void
sysprobe(void)
{
u_int32_t *p;
p = (void *)0x48000014; /* MECR */
printf("MECR %x\n", *p);
p = (void *)0x48000028; /* MCMEM0 */
printf("MCMEM0 %x\n", *p);
p = (void *)0x4800002C; /* MCMEM1 */
printf("MCMEM1 %x\n", *p);
p = (void *)0x48000030; /* MCATTx */
printf("MCATT0 %x\n", *p);
p = (void *)0x48000034; /* MCATTx */
printf("MCATT1 %x\n", *p);
p = (void *)0x48000038; /* MCIOx */
printf("MCIO0 %x\n", *p);
p = (void *)0x4800003C; /* MCIOx */
printf("MCIO1 %x\n", *p);
}
#endif
/*
* 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;
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 */
#if 0
int led_data = 0;
#endif
#ifdef DIAGNOSTIC
extern vsize_t xscale_minidata_clean_size; /* used in KASSERT */
#endif
/* early bus_space_map support */
struct bus_space tmp_bs_tag;
int (*map_func_save)(void *, bus_addr_t, bus_size_t, int,
bus_space_handle_t *);
#if 0
/* XXX */
/* start 32.768KHz OSC */
ioreg_write(PXA2X0_CLKMAN_BASE + 0x08, 2);
#endif
/*
* Heads up ... Setup the CPU / MMU / TLB functions
*/
if (set_cpufuncs())
panic("cpu not recognized!");
/* Get ready for splfoo() */
pxa2x0_intr_bootstrap(PXA2X0_INTCTL_BASE);
#if 0
/* Calibrate the delay loop. */
#endif
/*
* Okay, RedBoot has provided us with the following memory map:
*
* Physical Address Range Description
* ----------------------- ----------------------------------
* 0x00000000 - 0x01ffffff flash Memory (32MB)
* 0x04000000 - 0x05ffffff Application flash Memory (32MB)
* 0x08000000 - 0x080000ff I/O baseboard registers
* 0x0a000000 - 0x0a0fffff SRAM (1MB)
* 0x0c000000 - 0x0c0fffff Ethernet Controller
* 0x0e000000 - 0x0e0fffff Ethernet Controller (Attribute)
* 0x10000000 - 0x103fffff SA-1111 Companion Chip
* 0x14000000 - 0x17ffffff Expansion Card (64MB)
* 0x40000000 - 0x480fffff Processor Registers
* 0xa0000000 - 0xa3ffffff SDRAM Bank 0 (64MB)
*
*
* Virtual Address Range X C B Description
* ----------------------- - - - ----------------------------------
* 0x00000000 - 0x00003fff N Y Y SDRAM
* 0x00004000 - 0x000fffff N Y N Boot ROM
* 0x00100000 - 0x01ffffff N N N Application Flash
* 0x04000000 - 0x05ffffff N N N Exp Application Flash
* 0x08000000 - 0x080fffff N N N I/O baseboard registers
* 0x0a000000 - 0x0a0fffff N N N SRAM
* 0x40000000 - 0x480fffff N N N Processor Registers
* 0xa0000000 - 0xa000ffff N Y N RedBoot SDRAM
* 0xa0017000 - 0xa3ffffff Y Y Y SDRAM
* 0xc0000000 - 0xcfffffff Y Y Y Cache Flush Region
* (done by this routine)
* 0xfd000000 - 0xfd0000ff N N N I/O baseboard registers
* 0xfd100000 - 0xfd2fffff N N N Processor Registers.
* 0xfd200000 - 0xfd2fffff N N N 0x10800000 registers
*
* The first level page table is at 0xa0004000. There are also
* 2 second-level tables at 0xa0008000 and 0xa0008400.
*
*/
{
/*
* Tweak RedBoot's pagetable so that we can access to
* some registers at same VA before and after installing
* our page table.
*/
paddr_t ttb = (paddr_t)read_ttb();
map_io_area(ttb);
cpu_tlb_flushD();
}
/*
* 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 *)0xa0200000 - MAX_BOOT_STRING - 1);
#ifdef RAMDISK_HOOKS
boothowto |= RB_DFLTROOT;
#endif /* RAMDISK_HOOKS */
/*
* This test will work for now but has to be revised when support
* for other models is added.
*/
if ((cputype & ~CPU_ID_XSCALE_COREREV_MASK) == CPU_ID_PXA27X)
zaurusmod = ZAURUS_C3000;
else
zaurusmod = ZAURUS_C860;
/* setup GPIO for BTUART, in case bootloader doesn't take care of it */
pxa2x0_gpio_bootstrap(ZAURUS_GPIO_VBASE);
#if 0
pxa2x0_gpio_set_function(42, GPIO_ALT_FN_1_IN);
pxa2x0_gpio_set_function(43, GPIO_ALT_FN_2_OUT);
pxa2x0_gpio_set_function(44, GPIO_ALT_FN_1_IN);
pxa2x0_gpio_set_function(45, GPIO_ALT_FN_2_OUT);
/* FFUART */
pxa2x0_gpio_set_function(34, GPIO_ALT_FN_1_IN);
pxa2x0_gpio_set_function(39, GPIO_ALT_FN_2_OUT);
pxa2x0_gpio_set_function(35, GPIO_ALT_FN_1_IN);
pxa2x0_gpio_set_function(40, GPIO_ALT_FN_2_OUT);
pxa2x0_gpio_set_function(41, GPIO_ALT_FN_2_OUT);
/* STUART */
pxa2x0_gpio_set_function(46, GPIO_ALT_FN_2_IN);
pxa2x0_gpio_set_function(47, GPIO_ALT_FN_1_OUT);
#endif
/* tell com to drive STUART in slow infrared mode */
comsiraddr = (bus_addr_t)PXA2X0_STUART_BASE;
#if 1
/* turn on clock to UART block.
XXX this should not be necessary, consinit() will do it */
early_clkman(CKEN_FFUART | CKEN_BTUART | CKEN_STUART, 1);
#endif
green_on(0);
/*
* Temporarily replace bus_space_map() functions so that
* console devices can get mapped.
*
* Note that this relies upon the fact that both regular
* and a4x bus_space tags use the same map function.
*/
tmp_bs_tag = pxa2x0_bs_tag;
tmp_bs_tag.bs_map = bootstrap_bs_map;
map_func_save = pxa2x0_bs_tag.bs_map;
pxa2x0_a4x_bs_tag.bs_map = pxa2x0_bs_tag.bs_map = bootstrap_bs_map;
/* setup a serial console for very early boot */
consinit();
#ifdef KGDB
kgdb_port_init();
#endif
/* Talk to the user */
printf("\nOpenBSD/zaurus booting ...\n");
{
/* XXX - all Zaurus have this for now, fix memory sizing */
memstart = 0xa0000000;
memsize = 0x04000000; /* 64MB */
}
#if 0
{
volatile int *p;
char *membase;
char *memmax;
int chunksize = 0x02000000;
printf("probing memory");
membase = (char *)0xa0000000;
memmax = (char *)0xc0000000;
for (p = (int *)membase;
p < (int *)memmax;
p = (int *) (((char *)p) + chunksize)) {
printf ("cbase %p\n", p);
p[0] = 0x12345678;
p[1] = 0x12345678;
if ((p[0] != 0x12345678) || (p[1] != 0x12345678))
break;
}
memsize = ((char *)p) - membase;
printf("probing memory done found memsize %d\n", memsize);
}
#else
#endif
#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 0xa0200000 (where the kernel
* was loaded), and allocate the memory we need downwards.
* If we get too close to the page tables that RedBoot
* 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 = 0xa0009000UL;
physical_freeend = 0xa0200000UL;
physmem = (physical_end - physical_start) / PAGE_SIZE;
#ifdef DEBUG
/* 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 bounaries. 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);
/* 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, 0x00000000,
&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);
#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[];
size_t textsize = (u_int32_t) etext - KERNEL_TEXT_BASE;
size_t totalsize = esym - KERNEL_TEXT_BASE;
u_int logical;
textsize = (textsize + PGOFSET) & ~PGOFSET;
totalsize = (totalsize + PGOFSET) & ~PGOFSET;
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);
}
/* Map the Mini-Data cache clean area. */
xscale_setup_minidata(l1pagetable, minidataclean.pv_va,
minidataclean.pv_pa);
/* Map the vector page. */
#if 1
/* MULTI-ICE requires that page 0 is NC/NB so that it can download the
* cache-clean code there. */
pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa,
VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE);
#else
pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa,
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
#endif
/*
* map integrated peripherals at same address in l1pagetable
* so that we can continue to use console.
*/
copy_io_area_map((pd_entry_t *)l1pagetable);
/*
* 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.
*/
{
physical_freestart = physical_start +
(((esym + PGOFSET) & ~PGOFSET) - KERNEL_BASE);
physical_freeend = physical_end;
free_pages =
(physical_freeend - physical_freestart) / PAGE_SIZE;
}
/* 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. */
pxa2x0_intr_bootstrap(ZAURUS_INTCTL_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));
/*
* 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
arm32_vector_init(ARM_VECTORS_LOW, 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 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);
#ifdef __HAVE_MEMORY_DISK__
md_root_setconf(memory_disk, sizeof memory_disk);
#endif
#ifdef IPKDB
/* Initialise ipkdb */
ipkdb_init();
if (boothowto & RB_KDB)
ipkdb_connect(0);
#endif
#ifdef KGDB
if (boothowto & RB_KDB) {
kgdb_debug_init = 1;
kgdb_connect(1);
}
#endif
/*
* Restore proper bus_space operation, now that pmap is initialized.
*/
pxa2x0_a4x_bs_tag.bs_map = pxa2x0_bs_tag.bs_map = map_func_save;
#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);
}
const char *console = "glass";
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;
printf("bootfile: %s\n", boot_file);
printf("bootargs: %s\n", boot_args);
/* 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;
/* XXX undocumented console switching flags */
case '0':
console = "ffuart";
break;
case '1':
console = "btuart";
break;
case '2':
console = "stuart";
break;
default:
printf("unknown option `%c'\n", *cp);
break;
}
boothowto |= fl;
}
}
#ifdef KGDB
#ifndef KGDB_DEVNAME
#define KGDB_DEVNAME "ffuart"
#endif
const char kgdb_devname[] = KGDB_DEVNAME;
#if (NCOM > 0)
#ifndef KGDB_DEVMODE
#define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
#endif
int comkgdbmode = KGDB_DEVMODE;
#endif /* NCOM */
#endif /* KGDB */
void
consinit(void)
{
#if NCOM > 0
static int consinit_called = 0;
paddr_t paddr;
u_int cken = 0;
if (consinit_called != 0)
return;
consinit_called = 1;
#ifdef KGDB
if (strcmp(kgdb_devname, console) == 0) {
/* port is reserved for kgdb */
} else
#endif
if (strcmp(console, "ffuart") == 0) {
paddr = PXA2X0_FFUART_BASE;
cken = CKEN_FFUART;
} else if (strcmp(console, "btuart") == 0) {
paddr = PXA2X0_BTUART_BASE;
cken = CKEN_BTUART;
} else if (strcmp(console, "stuart") == 0) {
paddr = PXA2X0_STUART_BASE;
cken = CKEN_STUART;
irda_on(0);
}
if (cken != 0 && comcnattach(&pxa2x0_a4x_bs_tag, paddr, comcnspeed,
PXA2X0_COM_FREQ, comcnmode) == 0) {
early_clkman(cken, 1);
}
#endif /* NCOM */
}
#ifdef KGDB
void
kgdb_port_init(void)
{
#if (NCOM > 0) && defined(COM_PXA2X0)
paddr_t paddr;
u_int cken;
if (strcmp(kgdb_devname, "ffuart") == 0) {
paddr = PXA2X0_FFUART_BASE;
cken = CKEN_FFUART;
} else if (strcmp(kgdb_devname, "btuart") == 0) {
paddr = PXA2X0_BTUART_BASE;
cken = CKEN_BTUART;
} else if (strcmp(kgdb_devname, "stuart") == 0) {
paddr = PXA2X0_STUART_BASE;
cken = CKEN_STUART;
irda_on(0);
} else
return;
if (com_kgdb_attach_pxa2x0(&pxa2x0_a4x_bs_tag, paddr,
kgdb_rate, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comkgdbmode) == 0) {
early_clkman(cken, 1);
}
#endif
}
#endif
/* same as pxa2x0_clkman, but before autoconf */
void
early_clkman(u_int clk, int enable)
{
u_int32_t rv;
rv = ioreg_read(ZAURUS_CLKMAN_VBASE + CLKMAN_CKEN);
if (enable)
rv |= clk;
else
rv &= ~clk;
ioreg_write(ZAURUS_CLKMAN_VBASE + CLKMAN_CKEN, rv);
}
int glass_console = 0;
void
board_startup(void)
{
extern int lcd_cnattach(void (*)(u_int, int));
extern bus_addr_t comconsaddr;
#if NWSDISPLAY > 0
/*
* Try to attach the display console now that VM services
* are available.
*/
if ((cputype & ~CPU_ID_XSCALE_COREREV_MASK) == CPU_ID_PXA27X) {
if (strcmp(console, "glass") == 0) {
printf("attempting to switch console to lcd screen\n");
glass_console = 1;
}
if (glass_console == 1 && lcd_cnattach(early_clkman) == 0) {
/*
* Kill the existing serial console.
* XXX need to bus_space_unmap resources and disable
* clocks...
*/
comconsaddr = 0;
/*
* Display the copyright notice again on the new console
*/
extern const char copyright[];
printf("%s\n", copyright);
}
}
#endif
if (boothowto & RB_CONFIG) {
#ifdef BOOT_CONFIG
user_config();
#else
printf("kernel does not support -c; continuing..\n");
#endif
}
}
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