File: [local] / sys / arch / sparc64 / stand / ofwboot / Locore.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:19 2008 UTC (16 years, 5 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: Locore.c,v 1.7 2007/01/16 14:39:57 tsi Exp $ */
/* $NetBSD: Locore.c,v 1.1 2000/08/20 14:58:36 mrg Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* 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 TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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 <lib/libsa/stand.h>
#include "openfirm.h"
#include <machine/cpu.h>
static vaddr_t OF_claim_virt(vaddr_t vaddr, int len);
static vaddr_t OF_alloc_virt(int len, int align);
static int OF_free_virt(vaddr_t vaddr, int len);
static vaddr_t OF_map_phys(paddr_t paddr, off_t size, vaddr_t vaddr, int mode);
static paddr_t OF_alloc_phys(int len, int align);
static int OF_free_phys(paddr_t paddr, int len);
extern int openfirmware(void *);
void setup(void);
#if 0
#ifdef XCOFF_GLUE
asm (".text; .globl _entry; _entry: .long _start,0,0");
#endif
__dead void
_start(vpd, res, openfirm, arg, argl)
void *vpd;
int res;
int (*openfirm)(void *);
char *arg;
int argl;
{
extern char etext[];
#ifdef FIRMWORKSBUGS
syncicache((void *)RELOC, etext - (char *)RELOC);
#endif
openfirmware = openfirm; /* Save entry to Open Firmware */
setup();
main(arg, argl);
exit();
}
#endif
__dead void
_rtt()
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
} args;
args.name = ADR2CELL("exit");
args.nargs = 0;
args.nreturns = 0;
openfirmware(&args);
while (1); /* just in case */
}
void
OF_enter()
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
} args;
args.name = ADR2CELL("enter");
args.nargs = 0;
args.nreturns = 0;
openfirmware(&args);
}
int
OF_finddevice(name)
char *name;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t device;
cell_t phandle;
} args;
args.name = ADR2CELL("finddevice");
args.nargs = 1;
args.nreturns = 1;
args.device = ADR2CELL(name);
if (openfirmware(&args) == -1)
return -1;
return args.phandle;
}
int
OF_instance_to_package(ihandle)
int ihandle;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t ihandle;
cell_t phandle;
} args;
args.name = ADR2CELL("instance-to-package");
args.nargs = 1;
args.nreturns = 1;
args.ihandle = HDL2CELL(ihandle);
if (openfirmware(&args) == -1)
return -1;
return args.phandle;
}
int
OF_getprop(handle, prop, buf, buflen)
int handle;
char *prop;
void *buf;
int buflen;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t phandle;
cell_t prop;
cell_t buf;
cell_t buflen;
cell_t size;
} args;
args.name = ADR2CELL("getprop");
args.nargs = 4;
args.nreturns = 1;
args.phandle = HDL2CELL(handle);
args.prop = ADR2CELL(prop);
args.buf = ADR2CELL(buf);
args.buflen = buflen;
if (openfirmware(&args) == -1)
return -1;
return args.size;
}
#ifdef __notyet__ /* Has a bug on FirePower */
int
OF_setprop(handle, prop, buf, len)
u_int handle;
char *prop;
void *buf;
int len;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t phandle;
cell_t prop;
cell_t buf;
cell_t len;
cell_t size;
} args;
args.name = ADR2CELL("setprop");
args.nargs = 4;
args.nreturns = 1;
args.phandle = HDL2CELL(handle);
args.prop = ADR2CELL(prop);
args.buf = ADR2CELL(buf);
args.len = len;
if (openfirmware(&args) == -1)
return -1;
return args.size;
}
#endif
int
OF_open(dname)
char *dname;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t dname;
cell_t handle;
} args;
args.name = ADR2CELL("open");
args.nargs = 1;
args.nreturns = 1;
args.dname = ADR2CELL(dname);
if (openfirmware(&args) == -1 ||
args.handle == 0)
return -1;
return args.handle;
}
void
OF_close(handle)
int handle;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t handle;
} args;
args.name = ADR2CELL("close");
args.nargs = 1;
args.nreturns = 1;
args.handle = HDL2CELL(handle);
openfirmware(&args);
}
int
OF_write(handle, addr, len)
int handle;
void *addr;
int len;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t ihandle;
cell_t addr;
cell_t len;
cell_t actual;
} args;
args.name = ADR2CELL("write");
args.nargs = 3;
args.nreturns = 1;
args.ihandle = HDL2CELL(handle);
args.addr = ADR2CELL(addr);
args.len = len;
if (openfirmware(&args) == -1)
return -1;
return args.actual;
}
int
OF_read(handle, addr, len)
int handle;
void *addr;
int len;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t ihandle;
cell_t addr;
cell_t len;
cell_t actual;
} args;
args.name = ADR2CELL("read");
args.nargs = 3;
args.nreturns = 1;
args.ihandle = HDL2CELL(handle);
args.addr = ADR2CELL(addr);
args.len = len;
if (openfirmware(&args) == -1) {
return -1;
}
return args.actual;
}
int
OF_seek(handle, pos)
int handle;
u_quad_t pos;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t handle;
cell_t poshi;
cell_t poslo;
cell_t status;
} args;
args.name = ADR2CELL("seek");
args.nargs = 3;
args.nreturns = 1;
args.handle = HDL2CELL(handle);
args.poshi = HDQ2CELL_HI(pos);
args.poslo = HDQ2CELL_LO(pos);
if (openfirmware(&args) == -1) {
return -1;
}
return args.status;
}
void
OF_release(virt, size)
void *virt;
u_int size;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t virt;
cell_t size;
} args;
args.name = ADR2CELL("release");
args.nargs = 2;
args.nreturns = 0;
args.virt = ADR2CELL(virt);
args.size = size;
openfirmware(&args);
}
int
OF_milliseconds()
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t ms;
} args;
args.name = ADR2CELL("milliseconds");
args.nargs = 0;
args.nreturns = 1;
openfirmware(&args);
return args.ms;
}
void
OF_chain(virt, size, entry, arg, len)
void *virt;
u_int size;
void (*entry)();
void *arg;
u_int len;
{
extern int64_t romp;
extern int debug;
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t virt;
cell_t size;
cell_t entry;
cell_t arg;
cell_t len;
} args;
args.name = ADR2CELL("chain");
args.nargs = 5;
args.nreturns = 0;
args.virt = ADR2CELL(virt);
args.size = size;
args.entry = ADR2CELL(entry);
args.arg = ADR2CELL(arg);
args.len = len;
openfirmware(&args);
if (debug) {
printf("OF_chain: prom returned!\n");
/* OK, firmware failed us. Try calling prog directly */
printf("Calling entry(0, %p, %x, %lx, %lx)\n", arg, len,
(unsigned long)romp, (unsigned long)romp);
}
entry(0, arg, len, (unsigned long)romp, (unsigned long)romp);
panic("OF_chain: kernel returned!");
__asm("ta 2" : :);
}
static u_int stdin;
static u_int stdout;
static u_int mmuh = -1;
static u_int memh = -1;
void
setup()
{
u_int chosen;
if ((chosen = OF_finddevice("/chosen")) == -1)
_rtt();
if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) != sizeof(stdin)
|| OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) != sizeof(stdout)
|| OF_getprop(chosen, "mmu", &mmuh, sizeof(mmuh)) != sizeof(mmuh)
|| OF_getprop(chosen, "memory", &memh, sizeof(memh)) != sizeof(memh))
_rtt();
}
/*
* The following need either the handle to memory or the handle to the MMU.
*/
/*
* Grab some address space from the prom
*
* Only works while the prom is actively mapping us.
*/
static vaddr_t
OF_claim_virt(vaddr, len)
vaddr_t vaddr;
int len;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t method;
cell_t ihandle;
cell_t align;
cell_t len;
cell_t vaddr;
cell_t status;
cell_t retaddr;
} args;
#ifdef __notyet
if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) {
printf("OF_claim_virt: cannot get mmuh\r\n");
return -1LL;
}
#endif
args.name = ADR2CELL("call-method");
args.nargs = 5;
args.nreturns = 2;
args.method = ADR2CELL("claim");
args.ihandle = HDL2CELL(mmuh);
args.align = 0;
args.len = len;
args.vaddr = ADR2CELL(vaddr);
if (openfirmware(&args) != 0)
return -1LL;
return (vaddr_t)args.retaddr;
}
/*
* Request some address space from the prom
*
* Only works while the prom is actively mapping us.
*/
static vaddr_t
OF_alloc_virt(len, align)
int len;
int align;
{
int retaddr=-1;
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t method;
cell_t ihandle;
cell_t align;
cell_t len;
cell_t status;
cell_t retaddr;
} args;
#ifdef __notyet
if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) {
printf("OF_alloc_virt: cannot get mmuh\r\n");
return -1LL;
}
#endif
args.name = ADR2CELL("call-method");
args.nargs = 4;
args.nreturns = 2;
args.method = ADR2CELL("claim");
args.ihandle = HDL2CELL(mmuh);
args.align = align;
args.len = len;
args.retaddr = ADR2CELL(&retaddr);
if (openfirmware(&args) != 0)
return -1LL;
return (vaddr_t)args.retaddr;
}
/*
* Release some address space to the prom
*
* Only works while the prom is actively mapping us.
*/
static int
OF_free_virt(vaddr, len)
vaddr_t vaddr;
int len;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t method;
cell_t ihandle;
cell_t len;
cell_t vaddr;
} args;
#ifdef __notyet
if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) {
printf("OF_free_virt: cannot get mmuh\r\n");
return -1;
}
#endif
args.name = ADR2CELL("call-method");
args.nargs = 4;
args.nreturns = 0;
args.method = ADR2CELL("release");
args.ihandle = HDL2CELL(mmuh);
args.vaddr = ADR2CELL(vaddr);
args.len = len;
return openfirmware(&args);
}
/*
* Have prom map in some memory
*
* Only works while the prom is actively mapping us.
*/
static vaddr_t
OF_map_phys(paddr, size, vaddr, mode)
paddr_t paddr;
off_t size;
vaddr_t vaddr;
int mode;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t method;
cell_t ihandle;
cell_t mode;
cell_t size;
cell_t vaddr;
cell_t paddr_hi;
cell_t paddr_lo;
cell_t status;
cell_t retaddr;
} args;
#ifdef __notyet
if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) {
printf("OF_map_phys: cannot get mmuh\r\n");
return 0LL;
}
#endif
args.name = ADR2CELL("call-method");
args.nargs = 7;
args.nreturns = 1;
args.method = ADR2CELL("map");
args.ihandle = HDL2CELL(mmuh);
args.mode = mode;
args.size = size;
args.vaddr = ADR2CELL(vaddr);
args.paddr_hi = HDQ2CELL_HI(paddr);
args.paddr_lo = HDQ2CELL_LO(paddr);
if (openfirmware(&args) == -1)
return -1;
if (args.status)
return -1;
return (vaddr_t)args.retaddr;
}
/*
* Request some RAM from the prom
*
* Only works while the prom is actively mapping us.
*/
static paddr_t
OF_alloc_phys(len, align)
int len;
int align;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t method;
cell_t ihandle;
cell_t align;
cell_t len;
cell_t status;
cell_t phys_hi;
cell_t phys_lo;
} args;
#ifdef __notyet
if (memh == -1 && ((memh = get_memory_handle()) == -1)) {
printf("OF_alloc_phys: cannot get memh\r\n");
return -1LL;
}
#endif
args.name = ADR2CELL("call-method");
args.nargs = 4;
args.nreturns = 3;
args.method = ADR2CELL("claim");
args.ihandle = HDL2CELL(memh);
args.align = align;
args.len = len;
if (openfirmware(&args) != 0)
return -1LL;
return (paddr_t)CELL2HDQ(args.phys_hi, args.phys_lo);
}
/*
* Free some RAM to prom
*
* Only works while the prom is actively mapping us.
*/
static int
OF_free_phys(phys, len)
paddr_t phys;
int len;
{
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t method;
cell_t ihandle;
cell_t len;
cell_t phys_hi;
cell_t phys_lo;
} args;
#ifdef __notyet
if (memh == -1 && ((memh = get_memory_handle()) == -1)) {
printf("OF_free_phys: cannot get memh\r\n");
return -1;
}
#endif
args.name = ADR2CELL("call-method");
args.nargs = 5;
args.nreturns = 0;
args.method = ADR2CELL("release");
args.ihandle = HDL2CELL(memh);
args.len = len;
args.phys_hi = HDQ2CELL_HI(phys);
args.phys_lo = HDQ2CELL_LO(phys);
return openfirmware(&args);
}
/*
* Claim virtual memory -- does not map it in.
*/
void *
OF_claim(virt, size, align)
void *virt;
u_int size;
u_int align;
{
#define SUNVMOF
#ifndef SUNVMOF
struct {
cell_t name;
cell_t nargs;
cell_t nreturns;
cell_t virt;
cell_t size;
cell_t align;
cell_t baseaddr;
} args;
args.name = ADR2CELL("claim");
args.nargs = 3;
args.nreturns = 1;
args.virt = virt;
args.size = size;
args.align = align;
if (openfirmware(&args) == -1)
return (void *)-1;
return (void *)args.baseaddr;
#else
/*
* Sun Ultra machines run the firmware with VM enabled,
* so you need to handle allocating and mapping both
* virtual and physical memory. Ugh.
*/
paddr_t paddr;
void * newvirt = NULL;
if (virt == NULL) {
virt = (void *)OF_alloc_virt(size, align);
if (virt == (void *)-1LL) {
printf("OF_alloc_virt(%d,%d) failed w/%x\n",
size, align, virt);
return virt;
}
} else {
newvirt = (void *)OF_claim_virt((vaddr_t)virt, size);
if (newvirt == (void *)-1LL) {
printf("OF_claim_virt(%x,%d) failed w/%x\n",
virt, size, newvirt);
return newvirt;
}
virt = newvirt;
}
if ((paddr = OF_alloc_phys(size, align)) == (paddr_t)-1LL) {
printf("OF_alloc_phys(%d,%d) failed\n", size, align);
OF_free_virt((vaddr_t)virt, size);
return (void *)-1LL;
}
if (OF_map_phys(paddr, size, (vaddr_t)virt, -1) == -1) {
printf("OF_map_phys(%x,%d,%x,%d) failed\n",
paddr, size, virt, -1);
OF_free_phys((paddr_t)paddr, size);
OF_free_virt((vaddr_t)virt, size);
return (void *)-1LL;
}
return virt;
#endif
}
void
putchar(c)
int c;
{
char ch = c;
if (c == '\n')
putchar('\r');
OF_write(stdout, &ch, 1);
}
int
getchar()
{
unsigned char ch = '\0';
int l;
while ((l = OF_read(stdin, &ch, 1)) != 1)
if (l != -2 && l != 0)
return -1;
return ch;
}