Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Allocate the appropriate space for the XScale global cache clean code.

Browse Source
This commit is contained in:
thorpej 2001-11-11 17:30:14 +00:00
parent 1a9f819d84
commit 944fcd0d83
1 changed files with 20 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
sys/arch/evbarm/iq80310/iq80310_machdep.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: iq80310_machdep.c,v 1.7 2001/11/09 07:21:39 thorpej Exp $ */
/* $NetBSD: iq80310_machdep.c,v 1.8 2001/11/11 17:30:14 thorpej Exp $ */
/*
* Copyright (c) 1997,1998 Mark Brinicombe.
@ -116,6 +116,7 @@ pv_addr_t irqstack;
pv_addr_t undstack;
pv_addr_t abtstack;
pv_addr_t kernelstack;
pv_addr_t minidataclean;
vm_offset_t msgbufphys;
@ -287,6 +288,8 @@ struct l1_sec_map {
u_int
initarm(void)
{
extern vaddr_t xscale_cache_clean_addr, xscale_minidata_clean_addr;
extern vsize_t xscale_minidata_clean_size;
int loop;
int loop1;
u_int l1pagetable;
@ -514,6 +517,11 @@ initarm(void)
valloc_pages(undstack, UND_STACK_SIZE);
valloc_pages(kernelstack, UPAGES);
/* Allocate enough pages for cleaning the Mini-Data cache. */
KASSERT(xscale_minidata_clean_size <= NBPG);
valloc_pages(minidataclean, 1);
xscale_minidata_clean_addr = minidataclean.pv_va;
#ifdef VERBOSE_INIT_ARM
printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
irqstack.pv_va);
@ -613,6 +621,10 @@ initarm(void)
map_chunk(0, l2pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
PD_SIZE, AP_KRW, 0);
/* Map the Mini-Data cache clean area. */
map_chunk(0, l2pagetable, minidataclean.pv_va, minidataclean.pv_pa,
NBPG, AP_KRW, PT_CACHEABLE);
/* Map the page table that maps the kernel pages */
map_entry_nc(l2pagetable, kernel_ptpt.pv_pa, kernel_ptpt.pv_pa);
@ -691,6 +703,13 @@ initarm(void)
map_chunk(0, l2pagetable, IQ80310_80312_VBASE,
I80312_PMMR_BASE, I80312_PMMR_SIZE, AP_KRW, 0);
/*
* 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