freebsd-dev/sys/mips/ingenic/jz4780_machdep.c
Oleksandr Tymoshenko 817f9fcca7 [mips] Unbreak kernel build for CI20
- Include header required for boot_parse_XXX functions
- Use boot_parse_args when parsing argc/argv style arguments
- Remove unused function
2019-01-25 20:10:57 +00:00

241 lines
5.9 KiB
C

/*-
* Copyright (c) 2009 Oleksandr Tymoshenko
* Copyright (c) 2015 Alexander Kabaev
* 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 AND CONTRIBUTORS ``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 CONTRIBUTORS 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ddb.h"
#include "opt_platform.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/boot.h>
#include <sys/cons.h>
#include <sys/kdb.h>
#include <sys/reboot.h>
#ifdef FDT
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
#endif
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <net/ethernet.h>
#include <machine/clock.h>
#include <machine/cpu.h>
#include <machine/cpufunc.h>
#include <machine/hwfunc.h>
#include <machine/md_var.h>
#include <machine/trap.h>
#include <machine/vmparam.h>
#include <mips/ingenic/jz4780_regs.h>
#include <mips/ingenic/jz4780_cpuregs.h>
uint32_t * const led = (uint32_t *)0xb0010548;
extern char edata[], end[];
static char boot1_env[4096];
void
platform_cpu_init(void)
{
uint32_t reg;
/*
* Do not expect mbox interrups while writing
* mbox
*/
reg = mips_rd_xburst_reim();
reg &= ~JZ_REIM_MIRQ0M;
mips_wr_xburst_reim(reg);
/* Clean mailboxes */
mips_wr_xburst_mbox0(0);
mips_wr_xburst_mbox1(0);
mips_wr_xburst_core_sts(~JZ_CORESTS_MIRQ0P);
/* Unmask mbox interrupts */
reg |= JZ_REIM_MIRQ0M;
mips_wr_xburst_reim(reg);
}
void
platform_reset(void)
{
/*
* For now, provoke a watchdog reset in about a second, so UART buffers
* have a fighting chance to flush before we pull the plug
*/
writereg(JZ_TCU_BASE + JZ_WDOG_TCER, 0); /* disable watchdog */
writereg(JZ_TCU_BASE + JZ_WDOG_TCNT, 0); /* reset counter */
writereg(JZ_TCU_BASE + JZ_WDOG_TDR, 128); /* wait for ~1s */
writereg(JZ_TCU_BASE + JZ_WDOG_TCSR, TCSR_RTC_EN | TCSR_DIV_256);
writereg(JZ_TCU_BASE + JZ_WDOG_TCER, TCER_ENABLE); /* fire! */
/* Wait for reset */
while (1)
;
}
static void
mips_init(void)
{
int i;
#ifdef FDT
struct mem_region mr[FDT_MEM_REGIONS];
uint64_t val;
int mr_cnt;
int j;
#endif
for (i = 0; i < 10; i++) {
phys_avail[i] = 0;
}
/* The minimal amount of memory Ingenic SoC can have. */
dump_avail[0] = phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
physmem = realmem = btoc(32 * 1024 * 1024);
/*
* X1000 mips cpu special.
* TODO: do anyone know what is this ?
*/
__asm(
"li $2, 0xa9000000 \n\t"
"mtc0 $2, $5, 4 \n\t"
"nop \n\t"
::"r"(2));
#ifdef FDT
if (fdt_get_mem_regions(mr, &mr_cnt, &val) == 0) {
physmem = realmem = btoc(val);
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 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];
}
}
#endif
init_param1();
init_param2(physmem);
mips_cpu_init();
pmap_bootstrap();
mips_proc0_init();
mutex_init();
kdb_init();
led[0] = 0x8000;
#ifdef KDB
if (boothowto & RB_KDB)
kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
#endif
}
void
platform_start(__register_t a0, __register_t a1,
__register_t a2 __unused, __register_t a3 __unused)
{
char **argv;
int argc;
vm_offset_t kernend;
#ifdef FDT
vm_offset_t dtbp;
phandle_t chosen;
char buf[2048]; /* early stack supposedly big enough */
#endif
/*
* clear the BSS and SBSS segments, this should be first call in
* the function
*/
kernend = (vm_offset_t)&end;
memset(&edata, 0, kernend - (vm_offset_t)(&edata));
mips_postboot_fixup();
/* Initialize pcpu stuff */
mips_pcpu0_init();
/* Something to hold kernel env until kmem is available */
init_static_kenv(boot1_env, sizeof(boot1_env));
#ifdef FDT
/*
* Find the dtb passed in by the boot loader (currently fictional).
*/
dtbp = (vm_offset_t)NULL;
#if defined(FDT_DTB_STATIC)
/*
* In case the device tree blob was not retrieved (from metadata) try
* to use the statically embedded one.
*/
if (dtbp == (vm_offset_t)NULL)
dtbp = (vm_offset_t)&fdt_static_dtb;
#else
#error "Non-static FDT not supported on JZ4780"
#endif
if (OF_install(OFW_FDT, 0) == FALSE)
while (1);
if (OF_init((void *)dtbp) != 0)
while (1);
#endif
cninit();
#ifdef FDT
/*
* Get bootargs from FDT if specified.
*/
chosen = OF_finddevice("/chosen");
if (OF_getprop(chosen, "bootargs", buf, sizeof(buf)) != -1)
boothowto |= boot_parse_cmdline(buf);
#endif
/* Parse cmdline from U-Boot */
argc = a0;
argv = (char **)a1;
boothowto |= boot_parse_args(argc, argv);
mips_init();
}