056d436755
Add suppport for passing boot arguments via FDT for mediatek/ralink SoCs. This was taken from kan's work on CI20. Since most OpenWRT dts files have bootargs defined, we use bsdbootargs to specify FreeBSD specific arguments. Approved by: adrian (mentor) Sponsored by: Smartcom - Bulgaria AD Differential Revision: https://reviews.freebsd.org/D5979
342 lines
8.7 KiB
C
342 lines
8.7 KiB
C
/*-
|
|
* Copyright (C) 2015-2016 by Stanislav Galabov. All rights reserved.
|
|
* Copyright (C) 2010-2011 by Aleksandr Rybalko. All rights reserved.
|
|
* Copyright (C) 2007 by Oleksandr Tymoshenko. 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.
|
|
*
|
|
* 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 HIS RELATIVES 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 MIND, 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/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_ddb.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/imgact.h>
|
|
#include <sys/bio.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/cpu.h>
|
|
#include <sys/cons.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/ucontext.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/kdb.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/reboot.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/sysproto.h>
|
|
#include <sys/user.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_object.h>
|
|
#include <vm/vm_page.h>
|
|
|
|
#include <machine/cache.h>
|
|
#include <machine/clock.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/cpuinfo.h>
|
|
#include <machine/cpufunc.h>
|
|
#include <machine/cpuregs.h>
|
|
#include <machine/hwfunc.h>
|
|
#include <machine/intr_machdep.h>
|
|
#include <machine/locore.h>
|
|
#include <machine/md_var.h>
|
|
#include <machine/pte.h>
|
|
#include <machine/sigframe.h>
|
|
#include <machine/trap.h>
|
|
#include <machine/vmparam.h>
|
|
|
|
#include <mips/mediatek/mtk_sysctl.h>
|
|
#include <mips/mediatek/mtk_soc.h>
|
|
|
|
#include "opt_platform.h"
|
|
#include "opt_rt305x.h"
|
|
|
|
#include <dev/fdt/fdt_common.h>
|
|
#include <dev/ofw/openfirm.h>
|
|
|
|
extern int *edata;
|
|
extern int *end;
|
|
static char boot1_env[0x1000];
|
|
|
|
void
|
|
platform_cpu_init()
|
|
{
|
|
/* Nothing special */
|
|
}
|
|
|
|
static void
|
|
mips_init(void)
|
|
{
|
|
struct mem_region mr[FDT_MEM_REGIONS];
|
|
uint64_t val;
|
|
int i, j, mr_cnt;
|
|
char *memsize;
|
|
|
|
printf("entry: mips_init()\n");
|
|
|
|
bootverbose = 1;
|
|
|
|
for (i = 0; i < 10; i++)
|
|
phys_avail[i] = 0;
|
|
|
|
dump_avail[0] = phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
|
|
|
|
/*
|
|
* The most low memory MT7621 can have. Currently MT7621 is the chip
|
|
* that supports the most memory, so that seems reasonable.
|
|
*/
|
|
realmem = btoc(448 * 1024 * 1024);
|
|
|
|
if (fdt_get_mem_regions(mr, &mr_cnt, &val) == 0) {
|
|
physmem = btoc(val);
|
|
|
|
printf("RAM size: %ldMB (from FDT)\n",
|
|
ctob(physmem) / (1024 * 1024));
|
|
|
|
KASSERT((phys_avail[0] >= mr[0].mr_start) && \
|
|
(phys_avail[0] < (mr[0].mr_start + mr[0].mr_size)),
|
|
("First region is not within FDT memory range"));
|
|
|
|
/* Limit size of the first region */
|
|
phys_avail[1] = (mr[0].mr_start +
|
|
MIN(mr[0].mr_size, ctob(realmem)));
|
|
dump_avail[1] = phys_avail[1];
|
|
|
|
/* Add the rest of the regions */
|
|
for (i = 1, j = 2; i < mr_cnt; i++, j+=2) {
|
|
phys_avail[j] = mr[i].mr_start;
|
|
phys_avail[j+1] = (mr[i].mr_start + mr[i].mr_size);
|
|
dump_avail[j] = phys_avail[j];
|
|
dump_avail[j+1] = phys_avail[j+1];
|
|
}
|
|
} else {
|
|
if ((memsize = kern_getenv("memsize")) != NULL) {
|
|
physmem = btoc(strtol(memsize, NULL, 0) << 20);
|
|
printf("RAM size: %ldMB (from memsize)\n",
|
|
ctob(physmem) / (1024 * 1024));
|
|
} else { /* All else failed, assume 32MB */
|
|
physmem = btoc(32 * 1024 * 1024);
|
|
printf("RAM size: %ldMB (assumed)\n",
|
|
ctob(physmem) / (1024 * 1024));
|
|
}
|
|
|
|
if (ctob(physmem) < (448 * 1024 * 1024)) {
|
|
/*
|
|
* Anything up to 448MB is assumed to be directly
|
|
* mappable as low memory...
|
|
*/
|
|
dump_avail[1] = phys_avail[1] = ctob(physmem);
|
|
} else if (mtk_soc_get_socid() == MTK_SOC_MT7621) {
|
|
/*
|
|
* On MT7621 the low memory is limited to 448MB, the
|
|
* rest is high memory, mapped at 0x20000000
|
|
*/
|
|
phys_avail[1] = 448 * 1024 * 1024;
|
|
phys_avail[2] = 0x20000000;
|
|
phys_avail[3] = phys_avail[2] + ctob(physmem) -
|
|
phys_avail[1];
|
|
dump_avail[1] = phys_avail[1] - phys_avail[0];
|
|
dump_avail[2] = phys_avail[2];
|
|
dump_avail[3] = phys_avail[3] - phys_avail[2];
|
|
} else {
|
|
/*
|
|
* We have > 448MB RAM and we're not MT7621? Currently
|
|
* there is no such chip, so we'll just limit the RAM to
|
|
* 32MB and let the user know...
|
|
*/
|
|
printf("Unknown chip, assuming 32MB RAM\n");
|
|
physmem = btoc(32 * 1024 * 1024);
|
|
dump_avail[1] = phys_avail[1] = ctob(physmem);
|
|
}
|
|
}
|
|
|
|
if (physmem < realmem)
|
|
realmem = physmem;
|
|
|
|
init_param1();
|
|
init_param2(physmem);
|
|
mips_cpu_init();
|
|
pmap_bootstrap();
|
|
mips_proc0_init();
|
|
mutex_init();
|
|
kdb_init();
|
|
#ifdef KDB
|
|
if (boothowto & RB_KDB)
|
|
kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
_parse_bootarg(char *v)
|
|
{
|
|
char *n;
|
|
|
|
if (*v == '-') {
|
|
while (*v != '\0') {
|
|
v++;
|
|
switch (*v) {
|
|
case 'a': boothowto |= RB_ASKNAME; break;
|
|
/* Someone should simulate that ;-) */
|
|
case 'C': boothowto |= RB_CDROM; break;
|
|
case 'd': boothowto |= RB_KDB; break;
|
|
case 'D': boothowto |= RB_MULTIPLE; break;
|
|
case 'm': boothowto |= RB_MUTE; break;
|
|
case 'g': boothowto |= RB_GDB; break;
|
|
case 'h': boothowto |= RB_SERIAL; break;
|
|
case 'p': boothowto |= RB_PAUSE; break;
|
|
case 'r': boothowto |= RB_DFLTROOT; break;
|
|
case 's': boothowto |= RB_SINGLE; break;
|
|
case 'v': boothowto |= RB_VERBOSE; break;
|
|
}
|
|
}
|
|
} else {
|
|
n = strsep(&v, "=");
|
|
if (v == NULL)
|
|
kern_setenv(n, "1");
|
|
else
|
|
kern_setenv(n, v);
|
|
}
|
|
}
|
|
|
|
/* Parse cmd line args as env - copied from xlp_machdep. */
|
|
/* XXX-BZ this should really be centrally provided for all (boot) code. */
|
|
static void
|
|
_parse_bootargs(char *cmdline)
|
|
{
|
|
char *v;
|
|
|
|
while ((v = strsep(&cmdline, " \n")) != NULL) {
|
|
if (*v == '\0')
|
|
continue;
|
|
_parse_bootarg(v);
|
|
}
|
|
}
|
|
|
|
void
|
|
platform_reset(void)
|
|
{
|
|
|
|
mtk_soc_reset();
|
|
}
|
|
|
|
void
|
|
platform_start(__register_t a0 __unused, __register_t a1 __unused,
|
|
__register_t a2 __unused, __register_t a3 __unused)
|
|
{
|
|
vm_offset_t kernend;
|
|
int argc = a0, i;//, res;
|
|
uint32_t timer_clk;
|
|
char **argv = (char **)MIPS_PHYS_TO_KSEG0(a1);
|
|
char **envp = (char **)MIPS_PHYS_TO_KSEG0(a2);
|
|
void *dtbp;
|
|
phandle_t chosen;
|
|
char buf[2048];
|
|
|
|
/* clear the BSS and SBSS segments */
|
|
kernend = (vm_offset_t)&end;
|
|
memset(&edata, 0, kernend - (vm_offset_t)(&edata));
|
|
|
|
mips_postboot_fixup();
|
|
|
|
/* Initialize pcpu stuff */
|
|
mips_pcpu0_init();
|
|
|
|
dtbp = &fdt_static_dtb;
|
|
if (OF_install(OFW_FDT, 0) == FALSE)
|
|
while (1);
|
|
if (OF_init((void *)dtbp) != 0)
|
|
while (1);
|
|
|
|
mtk_soc_try_early_detect();
|
|
if ((timer_clk = mtk_soc_get_timerclk()) == 0)
|
|
timer_clk = 1000000000; /* no such speed yet */
|
|
|
|
mips_timer_early_init(timer_clk);
|
|
|
|
/* initialize console so that we have printf */
|
|
boothowto |= (RB_SERIAL | RB_MULTIPLE); /* Use multiple consoles */
|
|
boothowto |= (RB_VERBOSE);
|
|
cninit();
|
|
|
|
init_static_kenv(boot1_env, sizeof(boot1_env));
|
|
|
|
/*
|
|
* Get bsdbootargs from FDT if specified.
|
|
*/
|
|
chosen = OF_finddevice("/chosen");
|
|
if (OF_getprop(chosen, "bsdbootargs", buf, sizeof(buf)) != -1)
|
|
_parse_bootargs(buf);
|
|
|
|
printf("FDT DTB at: 0x%08x\n", (uint32_t)dtbp);
|
|
|
|
printf("CPU clock: %4dMHz\n", mtk_soc_get_cpuclk()/(1000*1000));
|
|
printf("Timer clock: %4dMHz\n", timer_clk/(1000*1000));
|
|
printf("UART clock: %4dMHz\n\n", mtk_soc_get_uartclk()/(1000*1000));
|
|
|
|
printf("U-Boot args (from %d args):\n", argc - 1);
|
|
|
|
if (argc == 1)
|
|
printf("\tNone\n");
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
char *n = "argv ", *arg;
|
|
|
|
if (i > 99)
|
|
break;
|
|
|
|
if (argv[i])
|
|
{
|
|
arg = (char *)(intptr_t)MIPS_PHYS_TO_KSEG0(argv[i]);
|
|
printf("\targv[%d] = %s\n", i, arg);
|
|
sprintf(n, "argv%d", i);
|
|
kern_setenv(n, arg);
|
|
}
|
|
}
|
|
|
|
printf("Environment:\n");
|
|
|
|
for (i = 0; envp[i] && MIPS_IS_VALID_PTR(envp[i]); i++) {
|
|
char *n, *arg;
|
|
|
|
arg = (char *)(intptr_t)MIPS_PHYS_TO_KSEG0(envp[i]);
|
|
if (! MIPS_IS_VALID_PTR(arg))
|
|
continue;
|
|
printf("\t%s\n", arg);
|
|
n = strsep(&arg, "=");
|
|
if (arg == NULL)
|
|
kern_setenv(n, "1");
|
|
else
|
|
kern_setenv(n, arg);
|
|
}
|
|
|
|
|
|
mips_init();
|
|
mips_timer_init_params(timer_clk, 0);
|
|
}
|