2 * Copyright (c) 2009 Oleksandr Tymoshenko
3 * Copyright (c) 2015 Alexander Kabaev
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 #include "opt_platform.h"
34 #include <sys/param.h>
36 #include <sys/kernel.h>
37 #include <sys/systm.h>
42 #include <sys/mutex.h>
43 #include <sys/reboot.h>
46 #include <dev/fdt/fdt_common.h>
47 #include <dev/ofw/openfirm.h>
51 #include <vm/vm_param.h>
52 #include <vm/vm_page.h>
53 #include <vm/vm_phys.h>
55 #include <net/ethernet.h>
57 #include <machine/clock.h>
58 #include <machine/cpu.h>
59 #include <machine/cpufunc.h>
60 #include <machine/hwfunc.h>
61 #include <machine/md_var.h>
62 #include <machine/trap.h>
64 #include <mips/ingenic/jz4780_regs.h>
65 #include <mips/ingenic/jz4780_cpuregs.h>
67 uint32_t * const led = (uint32_t *)0xb0010548;
69 extern char edata[], end[];
70 static char boot1_env[4096];
73 platform_cpu_init(void)
78 * Do not expect mbox interrups while writing
81 reg = mips_rd_xburst_reim();
82 reg &= ~JZ_REIM_MIRQ0M;
83 mips_wr_xburst_reim(reg);
86 mips_wr_xburst_mbox0(0);
87 mips_wr_xburst_mbox1(0);
88 mips_wr_xburst_core_sts(~JZ_CORESTS_MIRQ0P);
90 /* Unmask mbox interrupts */
91 reg |= JZ_REIM_MIRQ0M;
92 mips_wr_xburst_reim(reg);
99 * For now, provoke a watchdog reset in about a second, so UART buffers
100 * have a fighting chance to flush before we pull the plug
102 writereg(JZ_TCU_BASE + JZ_WDOG_TCER, 0); /* disable watchdog */
103 writereg(JZ_TCU_BASE + JZ_WDOG_TCNT, 0); /* reset counter */
104 writereg(JZ_TCU_BASE + JZ_WDOG_TDR, 128); /* wait for ~1s */
105 writereg(JZ_TCU_BASE + JZ_WDOG_TCSR, TCSR_RTC_EN | TCSR_DIV_256);
106 writereg(JZ_TCU_BASE + JZ_WDOG_TCER, TCER_ENABLE); /* fire! */
118 struct mem_region mr[FDT_MEM_REGIONS];
124 for (i = 0; i < 10; i++) {
128 /* The minimal amount of memory Ingenic SoC can have. */
129 dump_avail[0] = phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
130 physmem = realmem = btoc(32 * 1024 * 1024);
133 * X1000 mips cpu special.
134 * TODO: do anyone know what is this ?
137 "li $2, 0xa9000000 \n\t"
138 "mtc0 $2, $5, 4 \n\t"
143 if (fdt_get_mem_regions(mr, &mr_cnt, &val) == 0) {
144 physmem = realmem = btoc(val);
146 KASSERT((phys_avail[0] >= mr[0].mr_start) && \
147 (phys_avail[0] < (mr[0].mr_start + mr[0].mr_size)),
148 ("First region is not within FDT memory range"));
150 /* Limit size of the first region */
151 phys_avail[1] = (mr[0].mr_start + MIN(mr[0].mr_size, ctob(realmem)));
152 dump_avail[1] = phys_avail[1];
154 /* Add the rest of regions */
155 for (i = 1, j = 2; i < mr_cnt; i++, j+=2) {
156 phys_avail[j] = mr[i].mr_start;
157 phys_avail[j+1] = (mr[i].mr_start + mr[i].mr_size);
158 dump_avail[j] = phys_avail[j];
159 dump_avail[j+1] = phys_avail[j+1];
165 init_param2(physmem);
173 if (boothowto & RB_KDB)
174 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
179 platform_start(__register_t a0, __register_t a1,
180 __register_t a2 __unused, __register_t a3 __unused)
188 char buf[2048]; /* early stack supposedly big enough */
191 * clear the BSS and SBSS segments, this should be first call in
194 kernend = (vm_offset_t)&end;
195 memset(&edata, 0, kernend - (vm_offset_t)(&edata));
197 mips_postboot_fixup();
199 /* Initialize pcpu stuff */
202 /* Something to hold kernel env until kmem is available */
203 init_static_kenv(boot1_env, sizeof(boot1_env));
206 * Find the dtb passed in by the boot loader (currently fictional).
208 dtbp = (vm_offset_t)NULL;
210 #if defined(FDT_DTB_STATIC)
212 * In case the device tree blob was not retrieved (from metadata) try
213 * to use the statically embedded one.
215 if (dtbp == (vm_offset_t)NULL)
216 dtbp = (vm_offset_t)&fdt_static_dtb;
218 #error "Non-static FDT not supported on JZ4780"
220 if (OF_install(OFW_FDT, 0) == FALSE)
222 if (OF_init((void *)dtbp) != 0)
229 * Get bootargs from FDT if specified.
231 chosen = OF_finddevice("/chosen");
232 if (OF_getprop(chosen, "bootargs", buf, sizeof(buf)) != -1)
233 boothowto |= boot_parse_cmdline(buf);
235 /* Parse cmdline from U-Boot */
238 boothowto |= boot_parse_args(argc, argv);