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/* $OpenBSD: machdep.c,v 1.7 2016/10/09 11:25:40 tom Exp $ */
/*
* Copyright (c) 2008 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include "libsa.h"
#include "wdvar.h"
#include "fdt.h"
/*
* RouterBOOT firmware puts its FDT at an address that is low enough
* to conflict with bsd.rd. So we need to relocate the FDT. As long
* as we have at least 32MB of memory, the 16MB boundary should be
* fine, and leave us plenty of room for future kernel growth.
*/
#define FDTADDRSTART 0x01000000
#define RPR 0xe0000918
#define RPR_RSTE 0x52535445
#define RCR 0xe000091c
#define RCR_SWSR 0x00000001
#define RCR_SWHR 0x00000002
/* defines from pciide.c and wdc_obio.c */
int pciide_init (struct wdc_channel*, u_int);
int wdc_obio_init (struct wdc_channel*, u_int);
void
machdep(void)
{
void *node;
char *tmp;
int len;
extern int consfreq;
extern uint8_t *consaddr;
/* set default values */
consfreq = NS16550_FREQ;
consaddr = (uint8_t *)CONADDR;
/* lookup FTD for informations about console */
node = fdt_find_node("/chosen");
if (node) {
char *console;
fdt_node_property(node, "linux,stdout-path", &console);
node = fdt_find_node(console);
if (node) {
len = fdt_node_property(node, "clock-frequency", &tmp);
if (len == 4)
consfreq = *(int *)tmp;
len = fdt_node_property(node, "reg", &tmp);
if (len == 8)
consaddr = (uint8_t *)*(int *)tmp;
}
if (node = fdt_parent_node(node)) {
fdt_node_property(node, "device_type", &tmp);
if (strncmp(tmp, "soc", 3) == 0) {
/* we are on a soc */
len = fdt_node_property(node, "reg", &tmp);
if (len == 8)
consaddr += *(int *)tmp;
}
}
}
cninit();
{
extern int (*controller_init)(struct wdc_channel *chp, u_int chan);
extern u_int32_t pciide_base_addr;
extern u_int32_t wdc_base_addr[];
int *addr;
int chnum;
/* Thecus defaults */
controller_init = pciide_init;
pciide_base_addr = 0xe2000000;
/* lookup the FDT, may have some CF there */
chnum = 0;
wdc_base_addr[0] = 0;
wdc_base_addr[1] = 0;
node = fdt_find_node("/");
for (node = fdt_child_node(node); node; node = fdt_next_node(node)) {
len = fdt_node_property(node, "device_type", &tmp);
if (len && (strcmp(tmp, "rb,cf") == 0) && (chnum < 2)) {
len = fdt_node_property(node, "reg", (char **)&addr);
if (len == 8) {
wdc_base_addr[chnum] = *addr;
chnum++;
}
}
}
if (chnum)
controller_init = wdc_obio_init;
}
}
int
main(void)
{
extern char __bss_start[], _end[];
extern int fdtaddrsave;
bzero(__bss_start, _end - __bss_start);
/* initialize FDT if the blob is available */
if (fdtaddrsave) {
if (fdt_init((void *)fdtaddrsave) == 0)
fdtaddrsave = 0; /* no usable blob there */
}
/* relocate FDT */
if (fdtaddrsave && fdtaddrsave < FDTADDRSTART) {
struct fdt_head *fh = (void *)fdtaddrsave;
bcopy((void *)fdtaddrsave, (void *)FDTADDRSTART, fh->fh_size);
fdtaddrsave = FDTADDRSTART;
}
boot(0);
return 0;
}
void
_rtt(void)
{
uint32_t v;
*((volatile uint32_t *)(RPR)) = RPR_RSTE;
__asm volatile("eieio");
*((volatile uint32_t *)(RCR)) = RCR_SWHR;
printf("RESET FAILED\n");
for (;;)
continue;
/* NOTREACHED */
}
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