417 lines
13 KiB
C
417 lines
13 KiB
C
/* $NetBSD: hpc_machdep.c,v 1.70 2003/09/16 08:18:22 agc 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.
|
|
*
|
|
* RiscBSD kernel project
|
|
*
|
|
* machdep.c
|
|
*
|
|
* Machine dependant functions for kernel setup
|
|
*
|
|
* This file needs a lot of work.
|
|
*
|
|
* Created : 17/09/94
|
|
*/
|
|
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_md.h"
|
|
|
|
#define _ARM32_BUS_DMA_PRIVATE
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sysproto.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/imgact.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/ktr.h>
|
|
#include <sys/linker.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/pcpu.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/cons.h>
|
|
#include <sys/bio.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/kdb.h>
|
|
#include <machine/reg.h>
|
|
#include <machine/cpu.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_object.h>
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_pager.h>
|
|
#include <vm/vm_map.h>
|
|
#include <vm/vnode_pager.h>
|
|
#include <machine/pmap.h>
|
|
#include <machine/vmparam.h>
|
|
#include <machine/pcb.h>
|
|
#include <machine/undefined.h>
|
|
#include <machine/machdep.h>
|
|
#include <machine/metadata.h>
|
|
#include <machine/armreg.h>
|
|
#include <machine/bus.h>
|
|
#include <sys/reboot.h>
|
|
|
|
#include <arm/sa11x0/sa11x0_reg.h>
|
|
|
|
#define MDROOT_ADDR 0xd0400000
|
|
|
|
#define KERNEL_PT_VMEM 0 /* Page table for mapping video memory */
|
|
#define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */
|
|
#define KERNEL_PT_IO 3 /* Page table for mapping IO */
|
|
#define KERNEL_PT_IRQ 2 /* Page table for mapping irq handler */
|
|
#define KERNEL_PT_KERNEL 1 /* Page table for mapping kernel */
|
|
#define KERNEL_PT_L1 4 /* Page table for mapping l1pt */
|
|
#define KERNEL_PT_VMDATA 5 /* Page tables for mapping kernel VM */
|
|
#define KERNEL_PT_VMDATA_NUM 7 /* start with 16MB of KVM */
|
|
#define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
|
|
|
|
/* Define various stack sizes in pages */
|
|
#define IRQ_STACK_SIZE 1
|
|
#define ABT_STACK_SIZE 1
|
|
#define UND_STACK_SIZE 1
|
|
|
|
#define KERNEL_VM_BASE (KERNBASE + 0x00100000)
|
|
#define KERNEL_VM_SIZE 0x05000000
|
|
|
|
extern u_int data_abort_handler_address;
|
|
extern u_int prefetch_abort_handler_address;
|
|
extern u_int undefined_handler_address;
|
|
|
|
struct pv_addr kernel_pt_table[NUM_KERNEL_PTS];
|
|
|
|
extern void *_end;
|
|
|
|
extern vm_offset_t sa1110_uart_vaddr;
|
|
|
|
extern vm_offset_t sa1_cache_clean_addr;
|
|
|
|
extern int *end;
|
|
|
|
struct pcpu __pcpu;
|
|
struct pcpu *pcpup = &__pcpu;
|
|
|
|
#ifndef MD_ROOT_SIZE
|
|
#define MD_ROOT_SIZE 65535
|
|
#endif
|
|
/* Physical and virtual addresses for some global pages */
|
|
|
|
vm_paddr_t phys_avail[10];
|
|
vm_paddr_t dump_avail[4];
|
|
vm_paddr_t physical_start;
|
|
vm_paddr_t physical_end;
|
|
vm_paddr_t physical_freestart;
|
|
vm_offset_t physical_pages;
|
|
|
|
struct pv_addr systempage;
|
|
struct pv_addr irqstack;
|
|
struct pv_addr undstack;
|
|
struct pv_addr abtstack;
|
|
struct pv_addr kernelstack;
|
|
static struct trapframe proc0_tf;
|
|
|
|
/* Static device mappings. */
|
|
static const struct pmap_devmap assabet_devmap[] = {
|
|
/*
|
|
* Map the on-board devices VA == PA so that we can access them
|
|
* with the MMU on or off.
|
|
*/
|
|
{
|
|
SACOM1_VBASE,
|
|
SACOM1_BASE,
|
|
SACOM1_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_NOCACHE,
|
|
},
|
|
{
|
|
SAIPIC_BASE,
|
|
SAIPIC_BASE,
|
|
SAIPIC_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_NOCACHE,
|
|
},
|
|
{
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
}
|
|
};
|
|
|
|
struct arm32_dma_range *
|
|
bus_dma_get_range(void)
|
|
{
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
bus_dma_get_range_nb(void)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
cpu_reset()
|
|
{
|
|
cpu_halt();
|
|
while (1);
|
|
}
|
|
|
|
#define CPU_SA110_CACHE_CLEAN_SIZE (0x4000 * 2)
|
|
|
|
void *
|
|
initarm(void *arg, void *arg2)
|
|
{
|
|
struct pcpu *pc;
|
|
struct pv_addr kernel_l1pt;
|
|
struct pv_addr md_addr;
|
|
struct pv_addr md_bla;
|
|
int loop;
|
|
u_int kerneldatasize, symbolsize;
|
|
u_int l1pagetable;
|
|
vm_offset_t freemempos;
|
|
vm_offset_t lastalloced;
|
|
vm_offset_t lastaddr;
|
|
vm_size_t pt_size;
|
|
uint32_t memsize = 32 * 1024 * 1024;
|
|
sa1110_uart_vaddr = SACOM1_VBASE;
|
|
|
|
boothowto = RB_VERBOSE | RB_SINGLE;
|
|
cninit();
|
|
set_cpufuncs();
|
|
lastaddr = fake_preload_metadata();
|
|
physmem = memsize / PAGE_SIZE;
|
|
pc = &__pcpu;
|
|
pcpu_init(pc, 0, sizeof(struct pcpu));
|
|
PCPU_SET(curthread, &thread0);
|
|
|
|
physical_start = (vm_offset_t) KERNBASE;
|
|
physical_end = lastaddr;
|
|
physical_freestart = (((vm_offset_t)physical_end) + PAGE_MASK) & ~PAGE_MASK;
|
|
md_addr.pv_va = md_addr.pv_pa = MDROOT_ADDR;
|
|
kerneldatasize = (u_int32_t)&end - (u_int32_t)KERNVIRTADDR;
|
|
symbolsize = 0;
|
|
freemempos = (vm_offset_t)round_page(physical_freestart);
|
|
memset((void *)freemempos, 0, 256*1024);
|
|
/* Define a macro to simplify memory allocation */
|
|
#define valloc_pages(var, np) \
|
|
alloc_pages((var).pv_pa, (np)); \
|
|
(var).pv_va = (var).pv_pa;
|
|
|
|
#define alloc_pages(var, np) \
|
|
(var) = freemempos; \
|
|
freemempos += ((np) * PAGE_SIZE);\
|
|
memset((char *)(var), 0, ((np) * PAGE_SIZE));
|
|
|
|
while ((freemempos & (L1_TABLE_SIZE - 1)) != 0)
|
|
freemempos += PAGE_SIZE;
|
|
valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
|
|
valloc_pages(md_bla, L2_TABLE_SIZE / PAGE_SIZE);
|
|
alloc_pages(sa1_cache_clean_addr, CPU_SA110_CACHE_CLEAN_SIZE / PAGE_SIZE);
|
|
|
|
for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
|
|
if (!(loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) {
|
|
valloc_pages(kernel_pt_table[loop],
|
|
L2_TABLE_SIZE / PAGE_SIZE);
|
|
} else {
|
|
kernel_pt_table[loop].pv_pa = freemempos +
|
|
(loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL)) *
|
|
L2_TABLE_SIZE_REAL;
|
|
kernel_pt_table[loop].pv_va =
|
|
kernel_pt_table[loop].pv_pa;
|
|
}
|
|
}
|
|
|
|
valloc_pages(systempage, 1);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
pt_size = round_page(freemempos) - physical_freestart;
|
|
|
|
/* 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, KSTACK_PAGES);
|
|
lastalloced = kernelstack.pv_va;
|
|
|
|
/*
|
|
* Allocate memory for the l1 and l2 page tables. The scheme to avoid
|
|
* wasting memory by allocating the l1pt on the first 16k memory was
|
|
* taken from NetBSD rpc_machdep.c. NKPT should be greater than 12 for
|
|
* this to work (which is supposed to be the case).
|
|
*/
|
|
|
|
/*
|
|
* 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]);
|
|
pmap_link_l2pt(l1pagetable, KERNBASE,
|
|
&kernel_pt_table[KERNEL_PT_KERNEL]);
|
|
pmap_link_l2pt(l1pagetable, 0xd0000000,
|
|
&kernel_pt_table[KERNEL_PT_IO]);
|
|
pmap_link_l2pt(l1pagetable, lastalloced & ~((L1_S_SIZE * 4) - 1),
|
|
&kernel_pt_table[KERNEL_PT_L1]);
|
|
pmap_link_l2pt(l1pagetable, 0x90000000, &kernel_pt_table[KERNEL_PT_IRQ]);
|
|
pmap_link_l2pt(l1pagetable, MDROOT_ADDR,
|
|
&md_bla);
|
|
for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; ++loop)
|
|
pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00100000,
|
|
&kernel_pt_table[KERNEL_PT_VMDATA + loop]);
|
|
pmap_map_chunk(l1pagetable, KERNBASE, KERNBASE,
|
|
((uint32_t)lastaddr - KERNBASE), VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_CACHE);
|
|
/* 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, md_addr.pv_va, md_addr.pv_pa,
|
|
MD_ROOT_SIZE * 1024, 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,
|
|
KSTACK_PAGES * 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, md_bla.pv_va, md_bla.pv_pa, L2_TABLE_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
|
|
/* 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, assabet_devmap);
|
|
pmap_map_chunk(l1pagetable, sa1_cache_clean_addr, 0xf0000000,
|
|
CPU_SA110_CACHE_CLEAN_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
|
|
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;
|
|
undefined_init();
|
|
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));
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
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);
|
|
|
|
/*
|
|
* We must now clean the cache again....
|
|
* Cleaning may be done by reading new data to displace any
|
|
* dirty data in the cache. This will have happened in setttb()
|
|
* but since we are boot strapping the addresses used for the read
|
|
* may have just been remapped and thus the cache could be out
|
|
* of sync. A re-clean after the switch will cure this.
|
|
* After booting there are no gross reloations of the kernel thus
|
|
* this problem will not occur after initarm().
|
|
*/
|
|
cpu_idcache_wbinv_all();
|
|
|
|
bootverbose = 1;
|
|
|
|
/* Set stack for exception handlers */
|
|
|
|
proc_linkup0(&proc0, &thread0);
|
|
thread0.td_kstack = kernelstack.pv_va;
|
|
thread0.td_pcb = (struct pcb *)
|
|
(thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
|
|
thread0.td_pcb->pcb_flags = 0;
|
|
thread0.td_frame = &proc0_tf;
|
|
|
|
|
|
/* Enable MMU, I-cache, D-cache, write buffer. */
|
|
|
|
cpufunc_control(0x337f, 0x107d);
|
|
arm_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
|
|
|
|
pmap_curmaxkvaddr = freemempos + KERNEL_PT_VMDATA_NUM * 0x400000;
|
|
|
|
dump_avail[0] = phys_avail[0] = round_page(virtual_avail);
|
|
dump_avail[1] = phys_avail[1] = 0xc0000000 + 0x02000000 - 1;
|
|
dump_avail[2] = phys_avail[2] = 0;
|
|
dump_avail[3] = phys_avail[3] = 0;
|
|
|
|
mutex_init();
|
|
pmap_bootstrap(freemempos, 0xd0000000, &kernel_l1pt);
|
|
|
|
/* Do basic tuning, hz etc */
|
|
init_param1();
|
|
init_param2(physmem);
|
|
kdb_init();
|
|
return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP -
|
|
sizeof(struct pcb)));
|
|
}
|