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Basic support for the Integrator/AP board.

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This commit is contained in:
rearnsha 2001-10-27 16:17:51 +00:00
parent e882c399b9
commit 65f54d13cc
6 changed files with 1876 additions and 0 deletions
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614
sys/arch/evbarm/integrator/int_bus_dma.c Normal file
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/* $NetBSD: int_bus_dma.c,v 1.1 2001/10/27 16:17:51 rearnsha Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION 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.
*/
/*
* The integrator board has memory steering hardware that means that
* the normal physical addresses used by the processor cannot be used
* for DMA. Instead we have to use the "core module alias mapping
* addresses". We don't use these for normal processor accesses since
* they are much slower than the direct addresses when accessing
* memory on the local board.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/map.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/reboot.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/vnode.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#define _ARM32_BUS_DMA_PRIVATE
#include <evbarm/integrator/int_bus_dma.h>
#include <machine/cpu.h>
#include <machine/cpufunc.h>
#include <machine/psl.h>
static int integrator_bus_dmamap_load_buffer __P((bus_dma_tag_t,
bus_dmamap_t, void *, bus_size_t, struct proc *, int,
vm_offset_t *, int *, int));
static int integrator_bus_dma_inrange __P((bus_dma_segment_t *, int,
bus_addr_t));
/*
* Common function for loading a DMA map with a linear buffer. May
* be called by bus-specific DMA map load functions.
*/
int
integrator_bus_dmamap_load(t, map, buf, buflen, p, flags)
bus_dma_tag_t t;
bus_dmamap_t map;
void *buf;
bus_size_t buflen;
struct proc *p;
int flags;
{
vm_offset_t lastaddr;
int seg, error;
#ifdef DEBUG_DMA
printf("dmamap_load: t=%p map=%p buf=%p len=%lx p=%p f=%d\n",
t, map, buf, buflen, p, flags);
#endif /* DEBUG_DMA */
/*
* Make sure that on error condition we return "no valid mappings".
*/
map->dm_mapsize = 0;
map->dm_nsegs = 0;
if (buflen > map->_dm_size)
return (EINVAL);
seg = 0;
error = integrator_bus_dmamap_load_buffer(t, map, buf, buflen, p, flags,
&lastaddr, &seg, 1);
if (error == 0) {
map->dm_mapsize = buflen;
map->dm_nsegs = seg + 1;
}
#ifdef DEBUG_DMA
printf("dmamap_load: error=%d\n", error);
#endif /* DEBUG_DMA */
return (error);
}
/*
* Like _bus_dmamap_load(), but for mbufs.
*/
int
integrator_bus_dmamap_load_mbuf(t, map, m0, flags)
bus_dma_tag_t t;
bus_dmamap_t map;
struct mbuf *m0;
int flags;
{
vm_offset_t lastaddr;
int seg, error, first;
struct mbuf *m;
#ifdef DEBUG_DMA
printf("dmamap_load_mbuf: t=%p map=%p m0=%p f=%d\n",
t, map, m0, flags);
#endif /* DEBUG_DMA */
/*
* Make sure that on error condition we return "no valid mappings."
*/
map->dm_mapsize = 0;
map->dm_nsegs = 0;
#ifdef DIAGNOSTIC
if ((m0->m_flags & M_PKTHDR) == 0)
panic("integrator_bus_dmamap_load_mbuf: no packet header");
#endif /* DIAGNOSTIC */
if (m0->m_pkthdr.len > map->_dm_size)
return (EINVAL);
first = 1;
seg = 0;
error = 0;
for (m = m0; m != NULL && error == 0; m = m->m_next) {
error = integrator_bus_dmamap_load_buffer(t, map, m->m_data,
m->m_len, NULL, flags, &lastaddr, &seg, first);
first = 0;
}
if (error == 0) {
map->dm_mapsize = m0->m_pkthdr.len;
map->dm_nsegs = seg + 1;
}
#ifdef DEBUG_DMA
printf("dmamap_load_mbuf: error=%d\n", error);
#endif /* DEBUG_DMA */
return (error);
}
/*
* Like _bus_dmamap_load(), but for uios.
*/
int
integrator_bus_dmamap_load_uio(t, map, uio, flags)
bus_dma_tag_t t;
bus_dmamap_t map;
struct uio *uio;
int flags;
{
vm_offset_t lastaddr;
int seg, i, error, first;
bus_size_t minlen, resid;
struct proc *p = NULL;
struct iovec *iov;
caddr_t addr;
/*
* Make sure that on error condition we return "no valid mappings."
*/
map->dm_mapsize = 0;
map->dm_nsegs = 0;
resid = uio->uio_resid;
iov = uio->uio_iov;
if (uio->uio_segflg == UIO_USERSPACE) {
p = uio->uio_procp;
#ifdef DIAGNOSTIC
if (p == NULL)
panic("integrator_bus_dmamap_load_uio: USERSPACE but no proc");
#endif
}
first = 1;
seg = 0;
error = 0;
for (i = 0; i < uio->uio_iovcnt && resid != 0 && error == 0; i++) {
/*
* Now at the first iovec to load. Load each iovec
* until we have exhausted the residual count.
*/
minlen = resid < iov[i].iov_len ? resid : iov[i].iov_len;
addr = (caddr_t)iov[i].iov_base;
error = integrator_bus_dmamap_load_buffer(t, map, addr, minlen,
p, flags, &lastaddr, &seg, first);
first = 0;
resid -= minlen;
}
if (error == 0) {
map->dm_mapsize = uio->uio_resid;
map->dm_nsegs = seg + 1;
}
return (error);
}
/*
* Common function for DMA-safe memory allocation. May be called
* by bus-specific DMA memory allocation functions.
*/
extern vm_offset_t physical_start;
extern vm_offset_t physical_freestart;
extern vm_offset_t physical_freeend;
extern vm_offset_t physical_end;
int
integrator_bus_dmamem_alloc(t, size, alignment, boundary, segs, nsegs, rsegs, flags)
bus_dma_tag_t t;
bus_size_t size, alignment, boundary;
bus_dma_segment_t *segs;
int nsegs;
int *rsegs;
int flags;
{
int error;
#ifdef DEBUG_DMA
printf("dmamem_alloc t=%p size=%lx align=%lx boundary=%lx segs=%p nsegs=%x rsegs=%p flags=%x\n",
t, size, alignment, boundary, segs, nsegs, rsegs, flags);
#endif /* DEBUG_DMA */
error = (integrator_bus_dmamem_alloc_range(t, size, alignment, boundary,
segs, nsegs, rsegs, flags, trunc_page(physical_start), trunc_page(physical_end)));
#ifdef DEBUG_DMA
printf("dmamem_alloc: =%d\n", error);
#endif /* DEBUG_DMA */
return(error);
}
/*
* Common function for freeing DMA-safe memory. May be called by
* bus-specific DMA memory free functions.
*/
void
integrator_bus_dmamem_free(t, segs, nsegs)
bus_dma_tag_t t;
bus_dma_segment_t *segs;
int nsegs;
{
struct vm_page *m;
bus_addr_t addr;
struct pglist mlist;
int curseg;
#ifdef DEBUG_DMA
printf("dmamem_free: t=%p segs=%p nsegs=%x\n", t, segs, nsegs);
#endif /* DEBUG_DMA */
/*
* Build a list of pages to free back to the VM system.
*/
TAILQ_INIT(&mlist);
for (curseg = 0; curseg < nsegs; curseg++) {
for (addr = segs[curseg].ds_addr;
addr < (segs[curseg].ds_addr + segs[curseg].ds_len);
addr += PAGE_SIZE) {
m = PHYS_TO_VM_PAGE(CM_ALIAS_TO_LOCAL(addr));
TAILQ_INSERT_TAIL(&mlist, m, pageq);
}
}
uvm_pglistfree(&mlist);
}
/*
* Common function for mapping DMA-safe memory. May be called by
* bus-specific DMA memory map functions.
*/
int
integrator_bus_dmamem_map(t, segs, nsegs, size, kvap, flags)
bus_dma_tag_t t;
bus_dma_segment_t *segs;
int nsegs;
size_t size;
caddr_t *kvap;
int flags;
{
vm_offset_t va;
bus_addr_t addr;
int curseg;
pt_entry_t *ptep/*, pte*/;
#ifdef DEBUG_DMA
printf("dmamem_map: t=%p segs=%p nsegs=%x size=%lx flags=%x\n", t,
segs, nsegs, (unsigned long)size, flags);
#endif /* DEBUG_DMA */
size = round_page(size);
va = uvm_km_valloc(kernel_map, size);
if (va == 0)
return (ENOMEM);
*kvap = (caddr_t)va;
for (curseg = 0; curseg < nsegs; curseg++) {
for (addr = segs[curseg].ds_addr;
addr < (segs[curseg].ds_addr + segs[curseg].ds_len);
addr += NBPG, va += NBPG, size -= NBPG) {
#ifdef DEBUG_DMA
printf("wiring p%lx to v%lx", CM_ALIAS_TO_LOCAL(addr),
va);
#endif /* DEBUG_DMA */
if (size == 0)
panic("integrator_bus_dmamem_map: size botch");
pmap_enter(pmap_kernel(), va, CM_ALIAS_TO_LOCAL(addr),
VM_PROT_READ | VM_PROT_WRITE,
VM_PROT_READ | VM_PROT_WRITE | PMAP_WIRED);
/*
* If the memory must remain coherent with the
* cache then we must make the memory uncacheable
* in order to maintain virtual cache coherency.
* We must also guarentee the cache does not already
* contain the virtal addresses we are making
* uncacheable.
*/
if (flags & BUS_DMA_COHERENT) {
cpu_cache_purgeD_rng(va, NBPG);
cpu_drain_writebuf();
ptep = vtopte(va);
*ptep = ((*ptep) & (~PT_C | PT_B));
tlb_flush();
}
#ifdef DEBUG_DMA
ptep = vtopte(va);
printf(" pte=v%p *pte=%x\n", ptep, *ptep);
#endif /* DEBUG_DMA */
}
}
pmap_update(pmap_kernel());
#ifdef DEBUG_DMA
printf("dmamem_map: =%p\n", *kvap);
#endif /* DEBUG_DMA */
return (0);
}
/*
* Common functin for mmap(2)'ing DMA-safe memory. May be called by
* bus-specific DMA mmap(2)'ing functions.
*/
paddr_t
integrator_bus_dmamem_mmap(t, segs, nsegs, off, prot, flags)
bus_dma_tag_t t;
bus_dma_segment_t *segs;
int nsegs;
off_t off;
int prot, flags;
{
int i;
for (i = 0; i < nsegs; i++) {
#ifdef DIAGNOSTIC
if (off & PGOFSET)
panic("integrator_bus_dmamem_mmap: offset unaligned");
if (segs[i].ds_addr & PGOFSET)
panic("integrator_bus_dmamem_mmap: segment unaligned");
if (segs[i].ds_len & PGOFSET)
panic("integrator_bus_dmamem_mmap: segment size not multiple"
" of page size");
#endif /* DIAGNOSTIC */
if (off >= segs[i].ds_len) {
off -= segs[i].ds_len;
continue;
}
return arm_byte_to_page((u_long)CM_ALIAS_TO_LOCAL(segs[i].ds_addr) + off);
}
/* Page not found. */
return -1;
}
/**********************************************************************
* DMA utility functions
**********************************************************************/
/*
* Utility function to load a linear buffer. lastaddrp holds state
* between invocations (for multiple-buffer loads). segp contains
* the starting segment on entrace, and the ending segment on exit.
* first indicates if this is the first invocation of this function.
*/
static int
integrator_bus_dmamap_load_buffer(t, map, buf, buflen, p, flags, lastaddrp,
segp, first)
bus_dma_tag_t t;
bus_dmamap_t map;
void *buf;
bus_size_t buflen;
struct proc *p;
int flags;
vm_offset_t *lastaddrp;
int *segp;
int first;
{
bus_size_t sgsize;
bus_addr_t curaddr, lastaddr, baddr, bmask;
vm_offset_t vaddr = (vm_offset_t)buf;
int seg;
pmap_t pmap;
#ifdef DEBUG_DMA
printf("integrator_bus_dmamem_load_buffer(buf=%p, len=%lx, flags=%d, 1st=%d)\n",
buf, buflen, flags, first);
#endif /* DEBUG_DMA */
if (p != NULL)
pmap = p->p_vmspace->vm_map.pmap;
else
pmap = pmap_kernel();
lastaddr = *lastaddrp;
bmask = ~(map->_dm_boundary - 1);
for (seg = *segp; buflen > 0; ) {
/*
* Get the physical address for this segment.
*/
(void) pmap_extract(pmap, (vaddr_t)vaddr, &curaddr);
/*
* Make sure we're in an allowed DMA range.
*/
if (t->_ranges != NULL &&
integrator_bus_dma_inrange(t->_ranges, t->_nranges, curaddr) == 0)
return (EINVAL);
/*
* Compute the segment size, and adjust counts.
*/
sgsize = NBPG - ((u_long)vaddr & PGOFSET);
if (buflen < sgsize)
sgsize = buflen;
/*
* Make sure we don't cross any boundaries.
*/
if (map->_dm_boundary > 0) {
baddr = (curaddr + map->_dm_boundary) & bmask;
if (sgsize > (baddr - curaddr))
sgsize = (baddr - curaddr);
}
/*
* Insert chunk into a segment, coalescing with
* previous segment if possible.
*/
if (first) {
map->dm_segs[seg].ds_addr = LOCAL_TO_CM_ALIAS(curaddr);
map->dm_segs[seg].ds_len = sgsize;
map->dm_segs[seg]._ds_vaddr = vaddr;
first = 0;
} else {
if (curaddr == lastaddr &&
(map->dm_segs[seg].ds_len + sgsize) <=
map->_dm_maxsegsz &&
(map->_dm_boundary == 0 ||
(map->dm_segs[seg].ds_addr & bmask) ==
(LOCAL_TO_CM_ALIAS(curaddr) & bmask)))
map->dm_segs[seg].ds_len += sgsize;
else {
if (++seg >= map->_dm_segcnt)
break;
map->dm_segs[seg].ds_addr = LOCAL_TO_CM_ALIAS(curaddr);
map->dm_segs[seg].ds_len = sgsize;
map->dm_segs[seg]._ds_vaddr = vaddr;
}
}
lastaddr = curaddr + sgsize;
vaddr += sgsize;
buflen -= sgsize;
}
*segp = seg;
*lastaddrp = lastaddr;
/*
* Did we fit?
*/
if (buflen != 0)
return (EFBIG); /* XXX better return value here? */
return (0);
}
/*
* Check to see if the specified page is in an allowed DMA range.
*/
static int
integrator_bus_dma_inrange(ranges, nranges, curaddr)
bus_dma_segment_t *ranges;
int nranges;
bus_addr_t curaddr;
{
bus_dma_segment_t *ds;
int i;
for (i = 0, ds = ranges; i < nranges; i++, ds++) {
if (curaddr >= CM_ALIAS_TO_LOCAL(ds->ds_addr) &&
round_page(curaddr) <= (CM_ALIAS_TO_LOCAL(ds->ds_addr) + ds->ds_len))
return (1);
}
return (0);
}
/*
* Allocate physical memory from the given physical address range.
* Called by DMA-safe memory allocation methods.
*/
int
integrator_bus_dmamem_alloc_range(t, size, alignment, boundary, segs, nsegs, rsegs,
flags, low, high)
bus_dma_tag_t t;
bus_size_t size, alignment, boundary;
bus_dma_segment_t *segs;
int nsegs;
int *rsegs;
int flags;
vm_offset_t low;
vm_offset_t high;
{
vm_offset_t curaddr, lastaddr;
struct vm_page *m;
struct pglist mlist;
int curseg, error;
#ifdef DEBUG_DMA
printf("alloc_range: t=%p size=%lx align=%lx boundary=%lx segs=%p nsegs=%x rsegs=%p flags=%x lo=%lx hi=%lx\n",
t, size, alignment, boundary, segs, nsegs, rsegs, flags, low, high);
#endif /* DEBUG_DMA */
/* Always round the size. */
size = round_page(size);
/*
* Allocate pages from the VM system.
*/
TAILQ_INIT(&mlist);
error = uvm_pglistalloc(size, low, high, alignment, boundary,
&mlist, nsegs, (flags & BUS_DMA_NOWAIT) == 0);
if (error)
return (error);
/*
* Compute the location, size, and number of segments actually
* returned by the VM code.
*/
m = mlist.tqh_first;
curseg = 0;
lastaddr = VM_PAGE_TO_PHYS(m);
segs[curseg].ds_addr = LOCAL_TO_CM_ALIAS(lastaddr);
segs[curseg].ds_len = PAGE_SIZE;
#ifdef DEBUG_DMA
printf("alloc: page %lx\n", lastaddr);
#endif /* DEBUG_DMA */
m = m->pageq.tqe_next;
for (; m != NULL; m = m->pageq.tqe_next) {
curaddr = VM_PAGE_TO_PHYS(m);
#ifdef DIAGNOSTIC
if (curaddr < low || curaddr >= high) {
printf("uvm_pglistalloc returned non-sensical"
" address 0x%lx\n", curaddr);
panic("integrator_bus_dmamem_alloc_range");
}
#endif /* DIAGNOSTIC */
#ifdef DEBUG_DMA
printf("alloc: page %lx\n", curaddr);
#endif /* DEBUG_DMA */
if (curaddr == (lastaddr + PAGE_SIZE))
segs[curseg].ds_len += PAGE_SIZE;
else {
curseg++;
segs[curseg].ds_addr = LOCAL_TO_CM_ALIAS(curaddr);
segs[curseg].ds_len = PAGE_SIZE;
}
lastaddr = curaddr;
}
*rsegs = curseg + 1;
return (0);
}

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sys/arch/evbarm/integrator/int_bus_dma.h Normal file
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/* $NetBSD: int_bus_dma.h,v 1.1 2001/10/27 16:17:51 rearnsha Exp $ */
/*
* Copyright (c) 2001 ARM Ltd
* 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. The name of the company may not 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.
*/
#ifndef _INT_BUS_DMA_H
#define _INT_BUS_DMA_H
#include <machine/bus.h>
#ifdef _ARM32_BUS_DMA_PRIVATE
#define CM_ALIAS_TO_LOCAL(addr) (addr & 0x0fffffff)
#define LOCAL_TO_CM_ALIAS(addr) (addr | 0x80000000)
int integrator_bus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *,
bus_size_t, struct proc *, int));
int integrator_bus_dmamap_load_mbuf __P((bus_dma_tag_t, bus_dmamap_t,
struct mbuf *, int));
int integrator_bus_dmamap_load_uio __P((bus_dma_tag_t, bus_dmamap_t,
struct uio *, int));
int integrator_bus_dmamem_alloc __P((bus_dma_tag_t tag, bus_size_t size,
bus_size_t alignment, bus_size_t boundary,
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags));
void integrator_bus_dmamem_free __P((bus_dma_tag_t tag,
bus_dma_segment_t *segs, int nsegs));
int integrator_bus_dmamem_map __P((bus_dma_tag_t tag,
bus_dma_segment_t *segs, int nsegs, size_t size, caddr_t *kvap,
int flags));
paddr_t integrator_bus_dmamem_mmap __P((bus_dma_tag_t tag,
bus_dma_segment_t *segs, int nsegs, off_t off, int prot,
int flags));
int integrator_bus_dmamem_alloc_range __P((bus_dma_tag_t tag,
bus_size_t size, bus_size_t alignment, bus_size_t boundary,
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags,
vaddr_t low, vaddr_t high));
#endif /* _ARM32_BUS_DMA_PRIVATE */
#endif /* _INT_BUS_DMA_H */

20
sys/arch/evbarm/integrator/integrator_boot.h Normal file
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struct intbootinfo {
union {
struct {
unsigned long bp_pagesize;
unsigned long bp_nrpages;
} u1_bp;
char filler1[256];
} bi_u1;
#define bi_pagesize bi_u1.u1_bp.bp_pagesize
#define bi_nrpages bi_u1.u1_bp.bp_nrpages
union {
char paths[8][128];
struct magic {
unsigned long magic;
char filler2[1024 - sizeof(unsigned long)];
} u2_d;
} bi_u2;
char bi_cmdline[256];
char bi_settings[2048];
};

976
sys/arch/evbarm/integrator/integrator_machdep.c Normal file
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/* $NetBSD: integrator_machdep.c,v 1.1 2001/10/27 16:17:52 rearnsha Exp $ */
/*
* Copyright (c) 2001 ARM Ltd
* 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. The name of the company may not 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.
*
* 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 integrator board
*
* Created : 24/11/97
*/
#include "opt_ddb.h"
#include "opt_pmap_debug.h"
#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 <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 <machine/intr.h>
#include <machine/pte.h>
#include <machine/undefined.h>
#include <evbarm/integrator/integrator_boot.h>
#include "opt_ipkdb.h"
#include "pci.h"
void ifpga_reset(void) __attribute__((noreturn));
/*
* 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 = (u_int) ifpga_reset;
/* 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
struct intbootinfo intbootinfo;
BootConfig bootconfig; /* Boot config storage */
static char bootargs[MAX_BOOT_STRING + 1];
char *boot_args = NULL;
char *boot_file = NULL;
vm_offset_t physical_start;
vm_offset_t physical_freestart;
vm_offset_t physical_freeend;
vm_offset_t physical_end;
u_int free_pages;
vm_offset_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;
pv_addr_t kernelstack;
vm_offset_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_VMDATA 2 /* Page tables for mapping kernel VM */
#define KERNEL_PT_VMDATA_NUM (KERNEL_VM_SIZE >> (PDSHIFT + 2))
#define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
pt_entry_t kernel_pt_table[NUM_KERNEL_PTS];
struct user *proc0paddr;
/* Prototypes */
void consinit __P((void));
void map_section __P((vm_offset_t pt, vm_offset_t va, vm_offset_t pa,
int cacheable));
void map_pagetable __P((vm_offset_t pt, vm_offset_t va, vm_offset_t pa));
void map_entry __P((vm_offset_t pt, vm_offset_t va, vm_offset_t pa));
void map_entry_nc __P((vm_offset_t pt, vm_offset_t va, vm_offset_t pa));
void map_entry_ro __P((vm_offset_t pt, vm_offset_t va, vm_offset_t pa));
vm_size_t map_chunk __P((vm_offset_t pd, vm_offset_t pt, vm_offset_t va,
vm_offset_t pa, vm_size_t size, u_int acc,
u_int flg));
void process_kernel_args __P((char *));
void data_abort_handler __P((trapframe_t *frame));
void prefetch_abort_handler __P((trapframe_t *frame));
void undefinedinstruction_bounce __P((trapframe_t *frame));
void zero_page_readonly __P((void));
void zero_page_readwrite __P((void));
extern void configure __P((void));
extern void db_machine_init __P((void));
extern void parse_mi_bootargs __P((char *args));
extern void dumpsys __P((void));
/* A load of console goo. */
#include "vga.h"
#if (NVGA > 0)
#include <dev/ic/mc6845reg.h>
#include <dev/ic/pcdisplayvar.h>
#include <dev/ic/vgareg.h>
#include <dev/ic/vgavar.h>
#endif
#include "pckbc.h"
#if (NPCKBC > 0)
#include <dev/ic/i8042reg.h>
#include <dev/ic/pckbcvar.h>
#endif
#include "com.h"
#if (NCOM > 0)
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#ifndef CONCOMADDR
#define CONCOMADDR 0x3f8
#endif
#endif
#define CONSPEED B115200
#ifndef CONSPEED
#define CONSPEED B9600 /* TTYDEF_SPEED */
#endif
#ifndef CONMODE
#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
#endif
int comcnspeed = CONSPEED;
int comcnmode = CONMODE;
#include "plcom.h"
#if (NPLCOM > 0)
#include <evbarm/dev/plcomreg.h>
#include <evbarm/dev/plcomvar.h>
#include <evbarm/ifpga/ifpgamem.h>
#include <evbarm/ifpga/ifpgareg.h>
#include <evbarm/ifpga/ifpgavar.h>
#endif
#ifndef CONSDEVNAME
#define CONSDEVNAME "plcom"
#endif
#ifndef PLCONSPEED
#define PLCONSPEED B38400
#endif
#ifndef PLCONMODE
#define PLCONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
#endif
#ifndef PLCOMCNUNIT
#define PLCOMCNUNIT -1
#endif
int plcomcnspeed = PLCONSPEED;
int plcomcnmode = PLCONMODE;
#if 0
extern struct consdev kcomcons;
static void kcomcnputc(dev_t, int);
#endif
/*
* void cpu_reboot(int howto, char *bootstr)
*
* Reboots the system
*
* Deal with any syncing, unmounting, dumping and shutdown hooks,
* then reset the CPU.
*/
void
cpu_reboot(howto, bootstr)
int howto;
char *bootstr;
{
#ifdef DIAGNOSTIC
/* info */
printf("boot: howto=%08x curproc=%p\n", howto, curproc);
#endif
/*
* If we are still cold then hit the air brakes
* and crash to earth fast
*/
if (cold) {
doshutdownhooks();
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cngetc();
printf("rebooting...\n");
ifpga_reset();
/*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();
/* 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) {
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cngetc();
}
printf("rebooting...\n");
ifpga_reset();
/*NOTREACHED*/
}
/*
* Mapping table for core kernel memory. This memory is mapped at init
* time with section mappings.
*/
struct l1_sec_map {
vm_offset_t va;
vm_offset_t pa;
vm_size_t size;
int flags;
} l1_sec_table[] = {
#if NPLCOM > 0 && defined(PLCONSOLE)
{ UART0_BOOT_BASE, IFPGA_IO_BASE + IFPGA_UART0, 1024 * 1024, 0},
{ UART1_BOOT_BASE, IFPGA_IO_BASE + IFPGA_UART1, 1024 * 1024, 0},
#endif
#if NPCI > 0
{ IFPGA_PCI_IO_VBASE, IFPGA_PCI_IO_BASE, IFPGA_PCI_IO_VSIZE, 0},
{ IFPGA_PCI_CONF_VBASE, IFPGA_PCI_CONF_BASE, IFPGA_PCI_CONF_VSIZE, 0},
#endif
{ 0, 0, 0, 0 }
};
/*
* u_int initarm(struct ebsaboot *bootinfo)
*
* 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(bootinfo)
struct intbootinfo *bootinfo;
{
int loop;
int loop1;
u_int l1pagetable;
u_int l2pagetable;
extern char page0[], page0_end[];
extern int etext asm ("_etext");
extern int end asm ("_end");
pv_addr_t kernel_l1pt;
pv_addr_t kernel_ptpt;
#if NPLCOM > 0 && defined(PLCONSOLE)
static struct bus_space plcom_bus_space;
#endif
#if 0
cn_tab = &kcomcons;
#endif
/*
* Heads up ... Setup the CPU / MMU / TLB functions
*/
if (set_cpufuncs())
panic("cpu not recognized!");
/* - intbootinfo.bt_memstart) / NBPG */;
#if NPLCOM > 0 && defined(PLCONSOLE)
/*
* Initialise the diagnostic serial console
* This allows a means of generating output during initarm().
* Once all the memory map changes are complete we can call consinit()
* and not have to worry about things moving.
*/
if (PLCOMCNUNIT == 0) {
ifpga_create_io_bs_tag(&plcom_bus_space, (void*)0xfd600000);
plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT);
} else if (PLCOMCNUNIT == 1) {
ifpga_create_io_bs_tag(&plcom_bus_space, (void*)0xfd700000);
plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT);
}
#endif
/* Talk to the user */
printf("\nNetBSD/integrator booting ...\n");
#if 0
if (intbootinfo.bt_magic != BT_MAGIC_NUMBER_EBSA
&& intbootinfo.bt_magic != BT_MAGIC_NUMBER_CATS)
panic("Incompatible magic number passed in boot args\n");
#endif
/* {
int loop;
for (loop = 0; loop < 8; ++loop) {
printf("%08x\n", *(((int *)bootinfo)+loop));
}
}*/
/*
* Ok we have the following memory map
*
* virtual address == physical address apart from the areas:
* 0x00000000 -> 0x000fffff which is mapped to
* top 1MB of physical memory
* 0x00100000 -> 0x0fffffff which is mapped to
* physical addresses 0x00100000 -> 0x0fffffff
* 0x10000000 -> 0x1fffffff which is mapped to
* physical addresses 0x00000000 -> 0x0fffffff
* 0x20000000 -> 0xefffffff which is mapped to
* physical addresses 0x20000000 -> 0xefffffff
* 0xf0000000 -> 0xf03fffff which is mapped to
* physical addresses 0x00000000 -> 0x003fffff
*
* This means that the kernel is mapped suitably for continuing
* execution, all I/O is mapped 1:1 virtual to physical and
* physical memory is accessible.
*
* The initarm() has the responsibility for creating the kernel
* page tables.
* It must also set up various memory pointers that are used
* by pmap etc.
*/
/*
* Examine the boot args string for options we need to know about
* now.
*/
#if 0
process_kernel_args((char *)intbootinfo.bt_args);
#endif
printf("initarm: Configuring system ...\n");
/*
* Set up the variables that define the availablilty of
* physical memory
*/
physical_start = 0 /*intbootinfo.bt_memstart*/;
physical_freestart = physical_start;
#if 0
physical_end = /*intbootinfo.bt_memend*/ /*intbootinfo.bi_nrpages * NBPG */ 32*1024*1024;
#else
{
volatile unsigned long *cm_sdram
= (volatile unsigned long *)0x10000020;
switch ((*cm_sdram >> 2) & 0x7)
{
case 0:
physical_end = 16 * 1024 * 1024;
break;
case 1:
physical_end = 32 * 1024 * 1024;
break;
case 2:
physical_end = 64 * 1024 * 1024;
break;
case 3:
physical_end = 128 * 1024 * 1024;
break;
case 4:
physical_end = 256 * 1024 * 1024;
break;
default:
printf("CM_SDRAM retuns unknown value, using 16M\n");
physical_end = 16 * 1024 * 1024;
break;
}
}
#endif
physical_freeend = physical_end;
free_pages = (physical_end - physical_start) / NBPG;
/* Set up the bootconfig structure for the benefit of pmap.c */
bootconfig.dramblocks = 1;
bootconfig.dram[0].address = physical_start;
bootconfig.dram[0].pages = free_pages;
physmem = (physical_end - physical_start) / NBPG;
/* Tell the user about the memory */
printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
physical_start, physical_end - 1);
/*
* Ok the kernel occupies the bottom of physical memory.
* The first free page after the kernel can be found in
* intbootinfo->bt_memavail
* We now need to allocate some fixed page tables to get the kernel
* going.
* We allocate one page directory and a number page tables and store
* the physical addresses in the kernel_pt_table array.
*
* Ok the next bit of physical allocation may look complex but it is
* simple really. I have done it like this so that no memory gets
* wasted during the allocation of various pages and tables that are
* all different sizes.
* The start addresses will be page aligned.
* We allocate the kernel page directory on the first free 16KB boundry
* we find.
* We allocate the kernel page tables on the first 4KB boundry we find.
* Since we allocate at least 3 L2 pagetables we know that we must
* encounter at least one 16KB aligned address.
*/
#ifdef VERBOSE_INIT_ARM
printf("Allocating page tables\n");
#endif
/* Update the address of the first free 16KB chunk of physical memory */
physical_freestart = ((uintptr_t) &end - KERNEL_TEXT_BASE + PGOFSET)
& ~PGOFSET;
#if 0
physical_freestart += (kernexec->a_syms + sizeof(int)
+ *(u_int *)((int)end + kernexec->a_syms + sizeof(int))
+ (NBPG - 1)) & ~(NBPG - 1);
#endif
free_pages -= (physical_freestart - physical_start) / NBPG;
#ifdef VERBOSE_INIT_ARM
printf("freestart = %#lx, free_pages = %d (%#x)\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_TEXT_BASE + (var).pv_pa - physical_start;
#define alloc_pages(var, np) \
(var) = physical_freestart; \
physical_freestart += ((np) * NBPG); \
free_pages -= (np); \
memset((char *)(var), 0, ((np) * NBPG));
loop1 = 0;
kernel_l1pt.pv_pa = 0;
for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
/* Are we 16KB aligned for an L1 ? */
if ((physical_freestart & (PD_SIZE - 1)) == 0
&& kernel_l1pt.pv_pa == 0) {
valloc_pages(kernel_l1pt, PD_SIZE / NBPG);
} else {
alloc_pages(kernel_pt_table[loop1], PT_SIZE / NBPG);
++loop1;
}
}
/* This should never be able to happen but better confirm that. */
if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (PD_SIZE-1)) != 0)
panic("initarm: Failed to align the kernel page directory\n");
/*
* 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 a page for the page table to map kernel page tables*/
valloc_pages(kernel_ptpt, PT_SIZE / NBPG);
/* 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) / NBPG);
/*
* Ok we have allocated physical pages for the primary kernel
* page tables
*/
#ifdef VERBOSE_INIT_ARM
printf("Creating L1 page table at %#lx\n", kernel_l1pt.pv_pa);
#endif
/*
* Now we start consturction 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 */
map_pagetable(l1pagetable, 0x00000000,
kernel_pt_table[KERNEL_PT_SYS]);
map_pagetable(l1pagetable, KERNEL_BASE,
kernel_pt_table[KERNEL_PT_KERNEL]);
for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; ++loop)
map_pagetable(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
kernel_pt_table[KERNEL_PT_VMDATA + loop]);
map_pagetable(l1pagetable, PROCESS_PAGE_TBLS_BASE,
kernel_ptpt.pv_pa);
#ifdef VERBOSE_INIT_ARM
printf("Mapping kernel\n");
#endif
/* Now we fill in the L2 pagetable for the kernel static code/data */
l2pagetable = kernel_pt_table[KERNEL_PT_KERNEL];
{
u_int logical;
size_t textsize = (uintptr_t) &etext - KERNEL_TEXT_BASE;
size_t totalsize = (uintptr_t) &end - KERNEL_TEXT_BASE;
/* Round down text size and round up total size
*/
textsize = textsize & ~PGOFSET;
totalsize = (totalsize + PGOFSET) & ~PGOFSET;
/* logical = map_chunk(l1pagetable, l2pagetable, KERNEL_BASE,
physical_start, KERNEL_TEXT_BASE - KERNEL_BASE,
AP_KRW, PT_CACHEABLE); */
logical = map_chunk(l1pagetable, l2pagetable,
KERNEL_TEXT_BASE, physical_start, textsize,
AP_KRW, PT_CACHEABLE);
logical += map_chunk(l1pagetable, l2pagetable,
KERNEL_TEXT_BASE + logical, physical_start + logical,
totalsize - textsize, AP_KRW, PT_CACHEABLE);
#if 0
logical += map_chunk(0, l2pagetable, KERNEL_BASE + logical,
physical_start + logical, kernexec->a_syms + sizeof(int)
+ *(u_int *)((int)end + kernexec->a_syms + sizeof(int)),
AP_KRW, PT_CACHEABLE);
#endif
}
#ifdef VERBOSE_INIT_ARM
printf("Constructing L2 page tables\n");
#endif
/* Map the boot arguments page */
#if 0
map_entry_ro(l2pagetable, intbootinfo.bt_vargp, intbootinfo.bt_pargp);
#endif
/* Map the stack pages */
map_chunk(0, l2pagetable, irqstack.pv_va, irqstack.pv_pa,
IRQ_STACK_SIZE * NBPG, AP_KRW, PT_CACHEABLE);
map_chunk(0, l2pagetable, abtstack.pv_va, abtstack.pv_pa,
ABT_STACK_SIZE * NBPG, AP_KRW, PT_CACHEABLE);
map_chunk(0, l2pagetable, undstack.pv_va, undstack.pv_pa,
UND_STACK_SIZE * NBPG, AP_KRW, PT_CACHEABLE);
map_chunk(0, l2pagetable, kernelstack.pv_va, kernelstack.pv_pa,
UPAGES * NBPG, AP_KRW, PT_CACHEABLE);
map_chunk(0, l2pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
PD_SIZE, AP_KRW, 0);
/* Map the page table that maps the kernel pages */
map_entry_nc(l2pagetable, kernel_ptpt.pv_pa, kernel_ptpt.pv_pa);
/*
* Map entries in the page table used to map PTE's
* Basically every kernel page table gets mapped here
*/
/* The -2 is slightly bogus, it should be -log2(sizeof(pt_entry_t)) */
l2pagetable = kernel_ptpt.pv_pa;
map_entry_nc(l2pagetable, (KERNEL_BASE >> (PGSHIFT-2)),
kernel_pt_table[KERNEL_PT_KERNEL]);
map_entry_nc(l2pagetable, (PROCESS_PAGE_TBLS_BASE >> (PGSHIFT-2)),
kernel_ptpt.pv_pa);
map_entry_nc(l2pagetable, (0x00000000 >> (PGSHIFT-2)),
kernel_pt_table[KERNEL_PT_SYS]);
for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; ++loop)
map_entry_nc(l2pagetable, ((KERNEL_VM_BASE +
(loop * 0x00400000)) >> (PGSHIFT-2)),
kernel_pt_table[KERNEL_PT_VMDATA + loop]);
/*
* Map the system page in the kernel page table for the bottom 1Meg
* of the virtual memory map.
*/
l2pagetable = kernel_pt_table[KERNEL_PT_SYS];
#if 1
/* MULTI-ICE requires that page 0 is NC/NB so that it can download
the cache-clean code there. */
map_entry_nc(l2pagetable, 0x00000000, systempage.pv_pa);
#else
map_entry_nc(l2pagetable, 0x00000000, systempage.pv_pa);
#endif
/* Map the core memory needed before autoconfig */
loop = 0;
while (l1_sec_table[loop].size) {
vm_size_t sz;
#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_SEC_SIZE)
map_section(l1pagetable, l1_sec_table[loop].va + sz,
l1_sec_table[loop].pa + sz,
l1_sec_table[loop].flags);
++loop;
}
/*
* 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.
*/
/* Switch tables */
#ifdef VERBOSE_INIT_ARM
printf("freestart = %#lx, free_pages = %d (%#x)\n",
physical_freestart, free_pages, free_pages);
printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa);
#endif
setttb(kernel_l1pt.pv_pa);
#ifdef VERBOSE_INIT_ARM
printf("done!\n");
#endif
#ifdef PLCONSOLE
/*
* The IFPGA registers have just moved.
* Detach the diagnostic serial port and reattach at the new address.
*/
plcomcndetach();
#endif
/*
* XXX this should only be done in main() but it useful to
* have output earlier ...
*/
consinit();
#ifdef VERBOSE_INIT_ARM
printf("bootstrap done.\n");
#endif
/* Right set up the vectors at the bottom of page 0 */
memcpy((char *)0x00000000, page0, page0_end - page0);
/* We have modified a text page so sync the icache */
cpu_cache_syncI();
/*
* 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 * NBPG);
set_stackptr(PSR_ABT32_MODE, abtstack.pv_va + ABT_STACK_SIZE * NBPG);
set_stackptr(PSR_UND32_MODE, undstack.pv_va + UND_STACK_SIZE * NBPG);
/*
* 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 slighly 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;
/* At last !
* We now have the kernel in physical memory from the bottom upwards.
* Kernel page tables are physically above this.
* The kernel is mapped to KERNEL_TEXT_BASE
* The kernel data PTs will handle the mapping of 0xf1000000-0xf3ffffff
* The page tables are mapped to 0xefc00000
*/
/* Initialise the undefined instruction handlers */
printf("undefined ");
undefined_init();
/* Boot strap pmap telling it where the kernel page table is */
printf("pmap ");
pmap_bootstrap((pd_entry_t *)kernel_l1pt.pv_va, kernel_ptpt);
/* Setup the IRQ system */
printf("irq ");
irq_init();
printf("done.\n");
#ifdef IPKDB
/* Initialise ipkdb */
ipkdb_init();
if (boothowto & RB_KDB)
ipkdb_connect(0);
#endif
#ifdef DDB
printf("ddb: ");
db_machine_init();
#if 0
ddb_init(end[0], end + 1, esym);
#endif
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(args)
char *args;
{
boothowto = 0;
/* Make a local copy of the bootargs */
strncpy(bootargs, args, MAX_BOOT_STRING);
args = bootargs;
boot_file = bootargs;
/* Skip the kernel image filename */
while (*args != ' ' && *args != 0)
++args;
if (*args != 0)
*args++ = 0;
while (*args == ' ')
++args;
boot_args = args;
printf("bootfile: %s\n", boot_file);
printf("bootargs: %s\n", boot_args);
parse_mi_bootargs(boot_args);
}
void
consinit(void)
{
static int consinit_called = 0;
#if NPLCOM > 0 && defined(PLCONSOLE)
static struct bus_space plcom_bus_space;
#endif
#if 0
char *console = CONSDEVNAME;
#endif
if (consinit_called != 0)
return;
consinit_called = 1;
#if NPLCOM > 0 && defined(PLCONSOLE)
if (PLCOMCNUNIT == 0) {
ifpga_create_io_bs_tag(&plcom_bus_space,
(void*)UART0_BOOT_BASE);
if (plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT))
panic("can't init serial console");
return;
} else if (PLCOMCNUNIT == 1) {
ifpga_create_io_bs_tag(&plcom_bus_space,
(void*)UART0_BOOT_BASE);
if (plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT))
panic("can't init serial console");
return;
}
#endif
#if (NCOM > 0)
if (comcnattach(&isa_io_bs_tag, CONCOMADDR, comcnspeed,
COM_FREQ, comcnmode))
panic("can't init serial console @%x", CONCOMADDR);
return;
#endif
panic("No serial console configured");
}
#if 0
static bus_space_handle_t kcom_base = (bus_space_handle_t) (DC21285_PCI_IO_VBASE + CONCOMADDR);
u_int8_t footbridge_bs_r_1(void *, bus_space_handle_t, bus_size_t);
void footbridge_bs_w_1(void *, bus_space_handle_t, bus_size_t, u_int8_t);
#define KCOM_GETBYTE(r) footbridge_bs_r_1(0, kcom_base, (r))
#define KCOM_PUTBYTE(r,v) footbridge_bs_w_1(0, kcom_base, (r), (v))
static int
kcomcngetc(dev_t dev)
{
int stat, c;
/* block until a character becomes available */
while (!ISSET(stat = KCOM_GETBYTE(com_lsr), LSR_RXRDY))
;
c = KCOM_GETBYTE(com_data);
stat = KCOM_GETBYTE(com_iir);
return c;
}
/*
* Console kernel output character routine.
*/
static void
kcomcnputc(dev_t dev, int c)
{
int timo;
/* wait for any pending transmission to finish */
timo = 150000;
while (!ISSET(KCOM_GETBYTE(com_lsr), LSR_TXRDY) && --timo)
continue;
KCOM_PUTBYTE(com_data, c);
/* wait for this transmission to complete */
timo = 1500000;
while (!ISSET(KCOM_GETBYTE(com_lsr), LSR_TXRDY) && --timo)
continue;
}
static void
kcomcnpollc(dev_t dev, int on)
{
}
struct consdev kcomcons = {
NULL, NULL, kcomcngetc, kcomcnputc, kcomcnpollc, NULL,
NODEV, CN_NORMAL
};
#endif

150
sys/arch/evbarm/integrator/intmmu.S Normal file
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/* $NetBSD: intmmu.S,v 1.1 2001/10/27 16:17:52 rearnsha Exp $ */
/*
* Copyright (c) 2001 ARM Ltd
* 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. The name of the company may not 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.
*/
#include "assym.h"
#include <machine/asm.h>
#include <arm/armreg.h>
#include <arm/pte.h>
.text
ASENTRY_NP(integrator_start)
mov r6, #0x16000000 /* UART0 Physical base*/
mov r3, #'A'
str r3, [r6] /* Let the world know we are alive */
/*
* At this time the MMU is off.
* We build up an initial memory map at 0x8000 that we can use to get
* the kernel running from the top of memory. All mappings in this table
* use L1 section maps.
*/
/*
* Set Virtual == Physical
*/
mov r3, #(AP_KRW << AP_SECTION_SHIFT)
add r3, r3, #(L1_SECTION)
mov r2, #0x100000 /* advance by 1MB */
mov r1, #0x8000 /* page table start */
mov r0, #0x1000 /* page table size */
Lflat:
str r3, [r1], #0x0004
add r3, r3, r2
subs r0, r0, #1
bgt Lflat
/*
* Map VA 0xa0100000->0xa03fffff to PA 0x00000000->0x002fffff
*/
mov r3, #(AP_KRW << AP_SECTION_SHIFT)
add r3, r3, #(L1_SECTION)
mov r1, #0x8000 /* page table start */
add r1, r1, #(0xa00 * 4) /* offset to 0xa00xxxxx */
add r1, r1, #(0x001 * 4) /* offset to 0xa01xxxxx */
mov r0, #47
Lkern:
str r3, [r1], #0x0004 /* 0xa010000-0xa03fffff */
add r3, r3, r2
subs r0, r0, #1
bgt Lkern
/*
* Mapping the peripheral register region (0x10000000->0x1fffffff) linearly
* would require 256MB of virtual memory (as much space as the entire kernel
* virtual space). So we map the first 1M of each 16MB sub-space into the
* region VA 0xfd000000->0xfdffffff; this should map enough of the peripheral
* space to at least get us up and running.
*/
mov r3, #(AP_KRW << AP_SECTION_SHIFT)
add r3, r3, #L1_SECTION
add r3, r3, #0x10000000 /* Peripherals base */
mov r1, #0x8000 /* page table start */
add r1, r1, #(0xfd0 * 4)
mov r2, #0x01000000 /* 16MB increment. */
mov r0, #16
Lperiph:
str r3, [r1], #4 /* 0xfd000000-0xfdffffff */
add r3, r3, r2
subs r0, r0, #1
bgt Lperiph
/*
* We now have our page table ready, so load it up and light the blue
* touch paper.
*/
/* set the location of the L1 page table */
mov r1, #0x8000
mcr p15, 0, r1, c2, c0, 0
/* Flush the old TLBs (just in case) */
mcr p15, 0, r1, c8, c7, 0
mov r2, #'B'
strb r2, [r6]
/* Set the Domain Access register. Very important! */
mov r1, #1
mcr p15, 0, r1, c3, c0, 0
/*
* set mmu bit (don't set anything else for now, we don't know
* what sort of CPU we have yet.
*/
mov r1, #CPU_CONTROL_MMU_ENABLE
/*
* This is where it might all start to go wrong if the cpu fitted to your
* integrator does not have an MMU.
*/
/* fetch current control state */
mrc p15, 0, r2, c1, c0, 0
orr r2, r2, r1
/* set new control state */
mcr p15, 0, r2, c1, c0, 0
mov r0, r0
mov r0, r0
mov r0, r0
/* emit a char. Uart is now at 0xfd600000 */
mov r6, #0xfd000000
add r6, r6, #0x00600000
mov r2, #'C'
strb r2, [r6]
/* jump to kernel space */
mov r0, #0x0200
/* Switch to kernel VM and really set the ball rolling. */
ldr pc, Lstart
Lstart: .long start

50
sys/arch/evbarm/integrator/pci_machdep.c Normal file
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@ -0,0 +1,50 @@
/* $NetBSD: pci_machdep.c,v 1.1 2001/10/27 16:17:52 rearnsha Exp $ */
/*-
* Copyright (c) 2001 ARM Ltd
* 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. The name of the company may not 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.
*/
#include <sys/types.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/extent.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pciconf.h>
#include <evbarm/ifpga/ifpgareg.h>
void
pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int func,
int swiz, int *iline)
{
printf("pci_conf_interrupt(pc(%lx), bus(%d), dev(%d), func(%d), swiz(%d), *iline(%p)\n", (unsigned long)pc, bus, dev, func, swiz, iline);
if (dev >= 9)
*iline = IFPGA_INTRNUM_PCIINT0
+ (((dev - 9) + (func - 1)) & 3);
}