Some cleanup in the comments, simplify some code.
This commit is contained in:
peter
parent
f151a2cf07
commit
c0a37e6e11
@ -1,4 +1,4 @@
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/* $NetBSD: hpc_machdep.c,v 1.81 2006/10/07 13:50:16 peter Exp $ */
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/* $NetBSD: hpc_machdep.c,v 1.82 2006/10/07 13:53:24 peter Exp $ */
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/*
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* Copyright (c) 1994-1998 Mark Brinicombe.
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@ -33,24 +33,20 @@
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* RiscBSD kernel project
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*
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* machdep.c
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*
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* Machine dependant functions for kernel setup
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*
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* This file needs a lot of work.
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*
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* Created : 17/09/94
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*/
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/*
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* Machine dependent functions for kernel setup.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: hpc_machdep.c,v 1.81 2006/10/07 13:50:16 peter Exp $");
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__KERNEL_RCSID(0, "$NetBSD: hpc_machdep.c,v 1.82 2006/10/07 13:53:24 peter Exp $");
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#include "opt_ddb.h"
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#include "opt_ipkdb.h"
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#include "opt_pmap_debug.h"
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#include "fs_nfs.h"
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#include "ksyms.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -61,10 +57,7 @@ __KERNEL_RCSID(0, "$NetBSD: hpc_machdep.c,v 1.81 2006/10/07 13:50:16 peter Exp $
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#include <sys/exec.h>
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#include <sys/ksyms.h>
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#include <sys/boot_flag.h>
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#include <dev/cons.h>
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#include "ksyms.h"
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#include <sys/conf.h> /* XXX for consinit related hacks */
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#if NKSYMS || defined(DDB) || defined(LKM)
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#include <machine/db_machdep.h>
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@ -79,48 +72,42 @@ __KERNEL_RCSID(0, "$NetBSD: hpc_machdep.c,v 1.81 2006/10/07 13:50:16 peter Exp $
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#include <uvm/uvm.h>
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#include <machine/signal.h>
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#include <machine/frame.h>
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#include <machine/bootconfig.h>
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#include <machine/cpu.h>
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#include <machine/io.h>
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#include <machine/intr.h>
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#include <arm/arm32/katelib.h>
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#include <machine/bootinfo.h>
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#include <arm/sa11x0/sa11x0_reg.h>
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#include <arm/cpuconf.h>
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#include <arm/undefined.h>
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#include <machine/rtc.h>
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#include <machine/bootconfig.h>
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#include <machine/bootinfo.h>
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#include <machine/cpu.h>
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#include <machine/frame.h>
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#include <machine/intr.h>
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#include <machine/io.h>
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#include <machine/platid.h>
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#include <machine/rtc.h>
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#include <machine/signal.h>
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#include <arm/sa11x0/sa11x0_reg.h>
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#include <dev/cons.h>
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#include <dev/hpc/apm/apmvar.h>
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#include <dev/hpc/bicons.h>
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#include "opt_ipkdb.h"
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/* XXX for consinit related hacks */
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#include <sys/conf.h>
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#ifdef NFS
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#include <sys/mount.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfs/nfs.h>
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#include <nfs/nfsmount.h>
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#endif
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#endif /* NFS */
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/* Kernel text starts 256K in from the bottom of the kernel address space. */
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#define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00040000)
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#define KERNEL_VM_BASE (KERNEL_BASE + 0x00c00000)
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#define KERNEL_VM_BASE (KERNEL_BASE + 0x00C00000)
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#define KERNEL_VM_SIZE 0x05000000
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/*
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* Address to call from cpu_reset() to reset the machine.
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* This is machine architecture dependant as it varies depending
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* This is machine architecture dependent as it varies depending
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* on where the ROM appears when you turn the MMU off.
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*/
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u_int cpu_reset_address = 0;
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/* Define various stack sizes in pages */
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@ -145,7 +132,7 @@ int physmem = 0;
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#ifndef PMAP_STATIC_L1S
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int max_processes = 64; /* Default number */
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#endif /* !PMAP_STATIC_L1S */
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#endif /* !PMAP_STATIC_L1S */
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/* Physical and virtual addresses for some global pages */
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@ -167,7 +154,7 @@ extern int end;
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#ifdef PMAP_DEBUG
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extern int pmap_debug_level;
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#endif /* PMAP_DEBUG */
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#endif /* PMAP_DEBUG */
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#define KERNEL_PT_VMEM 0 /* Page table for mapping video memory */
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#define KERNEL_PT_SYS 1 /* Page table for mapping proc0 zero page */
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@ -186,36 +173,30 @@ extern unsigned int sa1_cache_clean_addr;
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extern unsigned int sa1_cache_clean_size;
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static vaddr_t sa1_cc_base;
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/* Non-buffered non-cachable memory needed to enter idle mode */
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extern vaddr_t sa11x0_idle_mem;
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/* Mode dependent sleep function holder */
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void (*__sleep_func)(void *);
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void *__sleep_ctx;
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/* Non-buffered non-cacheable memory needed to enter idle mode */
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extern vaddr_t sa11x0_idle_mem;
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/* Prototypes */
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void data_abort_handler(trapframe_t *);
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void prefetch_abort_handler(trapframe_t *);
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void undefinedinstruction_bounce(trapframe_t *);
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void dumpsys(void);
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u_int cpu_get_control(void);
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void physcon_display_base(u_int addr);
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void consinit(void);
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void data_abort_handler(trapframe_t *);
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void prefetch_abort_handler(trapframe_t *);
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void undefinedinstruction_bounce(trapframe_t *);
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u_int cpu_get_control(void);
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u_int initarm(int, char **, struct bootinfo *);
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#ifdef DEBUG_BEFOREMMU
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static void fakecninit(void);
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static void fakecninit(void);
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#endif
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#ifdef BOOT_DUMP
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void dumppages(char *, int);
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static void dumppages(char *, int);
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#endif
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u_int initarm(int, char **, struct bootinfo *);
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extern void dump_spl_masks(void);
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extern void dumpsys(void);
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/*
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* Reboots the system.
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*
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@ -237,14 +218,14 @@ cpu_reboot(int howto, char *bootstr)
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cngetc();
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printf("rebooting...\n");
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cpu_reset();
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/*NOTREACHED*/
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/* NOTREACHED */
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}
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/* Reset the sleep function. */
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__sleep_func = NULL;
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__sleep_ctx = NULL;
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/* Disable console buffering */
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/* Disable console buffering. */
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cnpollc(1);
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/*
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@ -257,18 +238,17 @@ cpu_reboot(int howto, char *bootstr)
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if (!(howto & RB_NOSYNC))
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bootsync();
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/* Say NO to interrupts */
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splhigh();
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/* Say NO to interrupts. */
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(void)splhigh();
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/* Do a dump if requested. */
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if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
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dumpsys();
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/* Run any shutdown hooks */
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/* Run any shutdown hooks. */
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doshutdownhooks();
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/* Make sure IRQs are disabled */
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/* Make sure IRQs are disabled. */
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IRQdisable;
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if (howto & RB_HALT) {
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@ -279,7 +259,7 @@ cpu_reboot(int howto, char *bootstr)
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printf("rebooting...\n");
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cpu_reset();
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/*NOTREACHED*/
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/* NOTREACHED */
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}
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/* Number of DRAM pages which are installed */
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@ -312,18 +292,18 @@ static const struct pmap_devmap sa11x0_devmap[] = {
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* in place when main is called.
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* This includes:
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* Taking a copy of the boot configuration structure.
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* Initialising the physical console so characters can be printed.
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* Initializing the physical console so characters can be printed.
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* Setting up page tables for the kernel.
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*/
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u_int
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initarm(int argc, char **argv, struct bootinfo *bi)
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{
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int loop;
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u_int kerneldatasize, symbolsize;
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u_int l1pagetable;
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vaddr_t freemempos;
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pv_addr_t kernel_l1pt;
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vsize_t pt_size;
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int loop, i;
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#if NKSYMS || defined(DDB) || defined(LKM)
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Elf_Shdr *sh;
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#endif
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@ -332,7 +312,7 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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__sleep_ctx = NULL;
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/*
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* Heads up ... Setup the CPU / MMU / TLB functions
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* Heads up ... Setup the CPU / MMU / TLB functions.
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*/
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set_cpufuncs();
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@ -352,7 +332,7 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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bootconfig.dram[0].address = 0xc0000000;
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bootconfig.dram[0].pages = DRAM_PAGES;
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bootconfig.dramblocks = 1;
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kerneldatasize = (u_int32_t)&end - (u_int32_t)KERNEL_TEXT_BASE;
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kerneldatasize = (uint32_t)&end - (uint32_t)KERNEL_TEXT_BASE;
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symbolsize = 0;
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#if NKSYMS || defined(DDB) || defined(LKM)
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@ -374,26 +354,29 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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/* parse kernel args */
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boothowto = 0;
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boot_file[0] = '\0';
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strncpy(booted_kernel_storage, *argv, sizeof(booted_kernel_storage));
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for (argc--, argv++; argc; argc--, argv++)
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switch (**argv) {
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strncpy(booted_kernel_storage, argv[0], sizeof(booted_kernel_storage));
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for (i = 1; i < argc; i++) {
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char *cp = argv[i];
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switch (*cp) {
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case 'b':
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/* boot device: -b=sd0 etc. */
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cp = cp + 2;
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#ifdef NFS
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if (strcmp(*argv + 2, "nfs") == 0)
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if (strcmp(cp, "nfs") == 0)
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mountroot = nfs_mountroot;
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else
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strncpy(boot_file, *argv + 2,
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sizeof(boot_file));
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#else /* NFS */
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strncpy(boot_file, *argv + 2, sizeof(boot_file));
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#endif /* NFS */
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strncpy(boot_file, cp, sizeof(boot_file));
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#else /* !NFS */
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strncpy(boot_file, cp, sizeof(boot_file));
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#endif /* !NFS */
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break;
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default:
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BOOT_FLAG(**argv, boothowto);
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BOOT_FLAG(*cp, boothowto);
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break;
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}
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}
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/* copy bootinfo into known kernel space */
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bootinfo_storage = *bi;
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bootinfo = &bootinfo_storage;
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@ -411,7 +394,7 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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*/
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/*
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* Set up the variables that define the availablilty of physcial
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* Set up the variables that define the availability of physcial
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* memory.
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*/
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physical_start = bootconfig.dram[0].address;
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@ -514,7 +497,7 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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*/
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for (;;) {
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alloc_pages(sa1_cc_base, 1);
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if (! (sa1_cc_base & (CPU_SA110_CACHE_CLEAN_SIZE - 1)))
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if (!(sa1_cc_base & (CPU_SA110_CACHE_CLEAN_SIZE - 1)))
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break;
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}
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{
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@ -558,7 +541,6 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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pmap_link_l2pt(l1pagetable, SAIPIO_BASE,
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&kernel_pt_table[KERNEL_PT_IO]);
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#ifdef VERBOSE_INIT_ARM
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printf("Mapping kernel\n");
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#endif
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@ -646,14 +628,14 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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if (pmap_debug_level >= 0)
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printf("kstack V%08lx P%08lx\n", kernelstack.pv_va,
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kernelstack.pv_pa);
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#endif /* PMAP_DEBUG */
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#endif /* PMAP_DEBUG */
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/*
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* Well we should set a data abort handler.
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* Once things get going this will change as we will need a proper
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* handler. Until then we will use a handler that just panics but
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* tells us why.
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* Initialisation of the vectors will just panic on a data abort.
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* Initialization of the vectors will just panic on a data abort.
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* This just fills in a slightly better one.
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*/
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printf("vectors ");
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@ -663,7 +645,7 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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printf("%08x %08x %08x\n", data_abort_handler_address,
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prefetch_abort_handler_address, undefined_handler_address);
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/* Initialise the undefined instruction handlers */
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/* Initialize the undefined instruction handlers */
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printf("undefined ");
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undefined_init();
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@ -717,15 +699,14 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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KERNEL_VM_BASE + KERNEL_VM_SIZE);
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#ifdef IPKDB
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/* Initialise ipkdb */
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/* Initialize ipkdb */
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ipkdb_init();
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if (boothowto & RB_KDB)
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ipkdb_connect(0);
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#endif /* NIPKDB */
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#endif /* IPKDB */
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#ifdef BOOT_DUMP
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dumppages((char *)kernel_l1pt.pv_va, 16);
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dumppages((char *)PTE_BASE, 16);
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#endif
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#ifdef DDB
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@ -741,7 +722,7 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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#ifdef DDB
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if (boothowto & RB_KDB)
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Debugger();
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#endif /* DDB */
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#endif /* DDB */
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if (bootinfo->magic == BOOTINFO_MAGIC) {
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platid.dw.dw0 = bootinfo->platid_cpu;
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@ -752,6 +733,20 @@ initarm(int argc, char **argv, struct bootinfo *bi)
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return (kernelstack.pv_va + USPACE_SVC_STACK_TOP);
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}
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void
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machine_sleep(void)
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{
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if (__sleep_func != NULL)
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__sleep_func(__sleep_ctx);
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}
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void
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machine_standby(void)
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{
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}
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void
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consinit(void)
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{
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@ -771,23 +766,10 @@ consinit(void)
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}
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}
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void
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machine_sleep(void)
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{
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if (__sleep_func != NULL)
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__sleep_func(__sleep_ctx);
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}
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void
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machine_standby(void)
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{
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}
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#ifdef DEBUG_BEFOREMMU
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cons_decl(sacom);
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void
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static void
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fakecninit(void)
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{
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static struct consdev fakecntab = cons_init(sacom);
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@ -799,7 +781,8 @@ fakecninit(void)
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#endif
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#ifdef BOOT_DUMP
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void dumppages(char *start, int nbytes)
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static void
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dumppages(char *start, int nbytes)
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{
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char *p = start;
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char *p1;
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@ -820,5 +803,3 @@ void dumppages(char *start, int nbytes)
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}
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}
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#endif
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/* End of machdep.c */
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