339 lines
10 KiB
C
339 lines
10 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("$FreeBSD$");
|
|
|
|
#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 <sys/msgbuf.h>
|
|
#include <machine/reg.h>
|
|
#include <machine/cpu.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
#include <vm/vm_object.h>
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_map.h>
|
|
#include <machine/devmap.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 <machine/physmem.h>
|
|
#include <sys/reboot.h>
|
|
|
|
|
|
#include <arm/xscale/i80321/i80321var.h> /* For i80321_calibrate_delay() */
|
|
|
|
#include <arm/xscale/i8134x/i81342reg.h>
|
|
#include <arm/xscale/i8134x/i81342var.h>
|
|
#include <arm/xscale/i8134x/obiovar.h>
|
|
|
|
|
|
#define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */
|
|
#define KERNEL_PT_IOPXS 1
|
|
#define KERNEL_PT_BEFOREKERN 2
|
|
#define KERNEL_PT_AFKERNEL 3 /* L2 table for mapping after kernel */
|
|
#define KERNEL_PT_AFKERNEL_NUM 9
|
|
|
|
/* this should be evenly divisable by PAGE_SIZE / L2_TABLE_SIZE_REAL (or 4) */
|
|
#define NUM_KERNEL_PTS (KERNEL_PT_AFKERNEL + KERNEL_PT_AFKERNEL_NUM)
|
|
|
|
struct pv_addr kernel_pt_table[NUM_KERNEL_PTS];
|
|
|
|
/* Physical and virtual addresses for some global pages */
|
|
|
|
struct pv_addr systempage;
|
|
struct pv_addr msgbufpv;
|
|
struct pv_addr irqstack;
|
|
struct pv_addr undstack;
|
|
struct pv_addr abtstack;
|
|
struct pv_addr kernelstack;
|
|
|
|
/* Static device mappings. */
|
|
static const struct arm_devmap_entry iq81342_devmap[] = {
|
|
{
|
|
IOP34X_VADDR,
|
|
IOP34X_HWADDR,
|
|
IOP34X_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_DEVICE,
|
|
},
|
|
{
|
|
/*
|
|
* Cheat and map a whole section, this will bring
|
|
* both PCI-X and PCI-E outbound I/O
|
|
*/
|
|
IOP34X_PCIX_OIOBAR_VADDR &~ (0x100000 - 1),
|
|
IOP34X_PCIX_OIOBAR &~ (0x100000 - 1),
|
|
0x100000,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_DEVICE,
|
|
},
|
|
{
|
|
IOP34X_PCE1_VADDR,
|
|
IOP34X_PCE1,
|
|
IOP34X_PCE1_SIZE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
PTE_DEVICE,
|
|
},
|
|
{
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
}
|
|
};
|
|
|
|
#define SDRAM_START 0x00000000
|
|
|
|
extern vm_offset_t xscale_cache_clean_addr;
|
|
|
|
void *
|
|
initarm(struct arm_boot_params *abp)
|
|
{
|
|
struct pv_addr kernel_l1pt;
|
|
struct pv_addr dpcpu;
|
|
int loop, i;
|
|
u_int l1pagetable;
|
|
vm_offset_t freemempos;
|
|
vm_offset_t freemem_pt;
|
|
vm_offset_t afterkern;
|
|
vm_offset_t freemem_after;
|
|
vm_offset_t lastaddr;
|
|
uint32_t memsize, memstart;
|
|
|
|
lastaddr = parse_boot_param(abp);
|
|
arm_physmem_kernaddr = abp->abp_physaddr;
|
|
set_cpufuncs();
|
|
pcpu_init(pcpup, 0, sizeof(struct pcpu));
|
|
PCPU_SET(curthread, &thread0);
|
|
|
|
/* Do basic tuning, hz etc */
|
|
init_param1();
|
|
|
|
freemempos = 0x00200000;
|
|
/* Define a macro to simplify memory allocation */
|
|
#define valloc_pages(var, np) \
|
|
alloc_pages((var).pv_pa, (np)); \
|
|
(var).pv_va = (var).pv_pa + 0xc0000000;
|
|
|
|
#define alloc_pages(var, np) \
|
|
freemempos -= (np * PAGE_SIZE); \
|
|
(var) = freemempos; \
|
|
memset((char *)(var), 0, ((np) * PAGE_SIZE));
|
|
|
|
while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0)
|
|
freemempos -= PAGE_SIZE;
|
|
valloc_pages(kernel_l1pt, L1_TABLE_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 + 0xc0000000;
|
|
}
|
|
}
|
|
freemem_pt = freemempos;
|
|
freemempos = 0x00100000;
|
|
/*
|
|
* 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);
|
|
|
|
/* Allocate dynamic per-cpu area. */
|
|
valloc_pages(dpcpu, DPCPU_SIZE / PAGE_SIZE);
|
|
dpcpu_init((void *)dpcpu.pv_va, 0);
|
|
|
|
/* 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);
|
|
valloc_pages(msgbufpv, round_page(msgbufsize) / PAGE_SIZE);
|
|
/*
|
|
* 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_va;
|
|
|
|
/* Map the L2 pages tables in the L1 page table */
|
|
pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00100000 - 1),
|
|
&kernel_pt_table[KERNEL_PT_SYS]);
|
|
pmap_map_chunk(l1pagetable, KERNBASE, SDRAM_START, 0x100000,
|
|
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
|
|
pmap_map_chunk(l1pagetable, KERNBASE + 0x100000, SDRAM_START + 0x100000,
|
|
0x100000, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
|
|
|
|
pmap_map_chunk(l1pagetable, KERNBASE + 0x200000, SDRAM_START + 0x200000,
|
|
(((uint32_t)(lastaddr) - KERNBASE - 0x200000) + L1_S_SIZE) & ~(L1_S_SIZE - 1),
|
|
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
freemem_after = ((int)lastaddr + PAGE_SIZE) & ~(PAGE_SIZE - 1);
|
|
afterkern = round_page(((vm_offset_t)lastaddr + L1_S_SIZE) & ~(L1_S_SIZE
|
|
- 1));
|
|
for (i = 0; i < KERNEL_PT_AFKERNEL_NUM; i++) {
|
|
pmap_link_l2pt(l1pagetable, afterkern + i * 0x00100000,
|
|
&kernel_pt_table[KERNEL_PT_AFKERNEL + i]);
|
|
}
|
|
|
|
|
|
/* Map the vector page. */
|
|
pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
|
|
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
|
arm_devmap_bootstrap(l1pagetable, iq81342_devmap);
|
|
/*
|
|
* Give the XScale global cache clean code an appropriately
|
|
* sized chunk of unmapped VA space starting at 0xff000000
|
|
* (our device mappings end before this address).
|
|
*/
|
|
xscale_cache_clean_addr = 0xff000000U;
|
|
|
|
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_stackptrs(0);
|
|
|
|
/*
|
|
* 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 relocations of the kernel thus
|
|
* this problem will not occur after initarm().
|
|
*/
|
|
cpu_idcache_wbinv_all();
|
|
cpu_setup("");
|
|
|
|
i80321_calibrate_delay();
|
|
i81342_sdram_bounds(&obio_bs_tag, IOP34X_VADDR, &memstart, &memsize);
|
|
physmem = memsize / PAGE_SIZE;
|
|
cninit();
|
|
/* Set stack for exception handlers */
|
|
|
|
undefined_init();
|
|
|
|
init_proc0(kernelstack.pv_va);
|
|
|
|
arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
|
|
|
|
pmap_curmaxkvaddr = afterkern + PAGE_SIZE;
|
|
|
|
vm_max_kernel_address = 0xe0000000;
|
|
pmap_bootstrap(pmap_curmaxkvaddr, &kernel_l1pt);
|
|
msgbufp = (void*)msgbufpv.pv_va;
|
|
msgbufinit(msgbufp, msgbufsize);
|
|
mutex_init();
|
|
|
|
/*
|
|
* Add the physical ram we have available.
|
|
*
|
|
* Exclude the kernel (and all the things we allocated which immediately
|
|
* follow the kernel) from the VM allocation pool but not from crash
|
|
* dumps. virtual_avail is a global variable which tracks the kva we've
|
|
* "allocated" while setting up pmaps.
|
|
*
|
|
* Prepare the list of physical memory available to the vm subsystem.
|
|
*/
|
|
arm_physmem_hardware_region(SDRAM_START, memsize);
|
|
arm_physmem_exclude_region(freemem_pt, KERNPHYSADDR -
|
|
freemem_pt, EXFLAG_NOALLOC);
|
|
arm_physmem_exclude_region(freemempos, KERNPHYSADDR - 0x100000 -
|
|
freemempos, EXFLAG_NOALLOC);
|
|
arm_physmem_exclude_region(abp->abp_physaddr,
|
|
virtual_avail - KERNVIRTADDR, EXFLAG_NOALLOC);
|
|
arm_physmem_init_kernel_globals();
|
|
|
|
init_param2(physmem);
|
|
kdb_init();
|
|
return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP -
|
|
sizeof(struct pcb)));
|
|
}
|