Author: sgalabov
Date: Thu Apr 7 11:02:49 2016
New Revision: 297666
URL: https://svnweb.freebsd.org/changeset/base/297666
Log:
This revision adds the following parts:
- machine dependent low level init code
- SoC clocks detection and some utility functions
- Common interface to read/write/modify SoC system control registers, used
by some of the other drivers and utility functions
- simple FDT resets support, based on the fdt_clock implementation already
in the tree. For the moment resets and clocks are managed using these
implementations. I am planning to port those to the new extres framework
in the future, but currently I simply don't have time to do this part too.
Approved by: adrian (mentor)
Sponsored by: Smartcom - Bulgaria AD
Differential Revision: https://reviews.freebsd.org/D5826
Added:
head/sys/mips/mediatek/
head/sys/mips/mediatek/fdt_reset.c (contents, props changed)
head/sys/mips/mediatek/fdt_reset.h (contents, props changed)
head/sys/mips/mediatek/fdt_reset_if.m (contents, props changed)
head/sys/mips/mediatek/mtk_machdep.c (contents, props changed)
head/sys/mips/mediatek/mtk_soc.c (contents, props changed)
head/sys/mips/mediatek/mtk_soc.h (contents, props changed)
head/sys/mips/mediatek/mtk_sysctl.c (contents, props changed)
head/sys/mips/mediatek/mtk_sysctl.h (contents, props changed)
Added: head/sys/mips/mediatek/fdt_reset.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/mips/mediatek/fdt_reset.c Thu Apr 7 11:02:49 2016
(r297666)
@@ -0,0 +1,125 @@
+/*-
+ * Copyright (c) 2016 Stanislav Galabov
+ * Copyright (c) 2014 Ian Lepore <i...@freebsd.org>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/queue.h>
+#include <sys/systm.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include "fdt_reset_if.h"
+#include <mips/mediatek/fdt_reset.h>
+
+/*
+ * Loop through all the tuples in the resets= property for a device, asserting
+ * or deasserting each reset.
+ *
+ * Be liberal about errors for now: warn about a failure to (de)assert but keep
+ * trying with any other resets in the list. Return ENXIO if any errors were
+ * found, and let the caller decide whether the problem is fatal.
+ */
+static int
+assert_deassert_all(device_t consumer, boolean_t assert)
+{
+ phandle_t rnode;
+ device_t resetdev;
+ int resetnum, err, i, ncells;
+ uint32_t *resets;
+ boolean_t anyerrors;
+
+ rnode = ofw_bus_get_node(consumer);
+ ncells = OF_getencprop_alloc(rnode, "resets", sizeof(*resets),
+ (void **)&resets);
+ if (!assert && ncells < 2) {
+ device_printf(consumer, "Warning: No resets specified in fdt "
+ "data; device may not function.");
+ return (ENXIO);
+ }
+ anyerrors = false;
+ for (i = 0; i < ncells; i += 2) {
+ resetdev = OF_device_from_xref(resets[i]);
+ resetnum = resets[i + 1];
+ if (resetdev == NULL) {
+ if (!assert)
+ device_printf(consumer, "Warning: can not find "
+ "driver for reset number %u; device may "
+ "not function\n", resetnum);
+ anyerrors = true;
+ continue;
+ }
+ if (assert)
+ err = FDT_RESET_ASSERT(resetdev, resetnum);
+ else
+ err = FDT_RESET_DEASSERT(resetdev, resetnum);
+ if (err != 0) {
+ if (!assert)
+ device_printf(consumer, "Warning: failed to "
+ "deassert reset number %u; device may not "
+ "function\n", resetnum);
+ anyerrors = true;
+ }
+ }
+ free(resets, M_OFWPROP);
+ return (anyerrors ? ENXIO : 0);
+}
+
+int
+fdt_reset_assert_all(device_t consumer)
+{
+
+ return (assert_deassert_all(consumer, true));
+}
+
+int
+fdt_reset_deassert_all(device_t consumer)
+{
+
+ return (assert_deassert_all(consumer, false));
+}
+
+void
+fdt_reset_register_provider(device_t provider)
+{
+
+ OF_device_register_xref(
+ OF_xref_from_node(ofw_bus_get_node(provider)), provider);
+}
+
+void
+fdt_reset_unregister_provider(device_t provider)
+{
+
+ OF_device_register_xref(OF_xref_from_device(provider), NULL);
+}
+
Added: head/sys/mips/mediatek/fdt_reset.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/mips/mediatek/fdt_reset.h Thu Apr 7 11:02:49 2016
(r297666)
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 2016 Stanislav Galabov
+ * Copyright (c) 2014 Ian Lepore <i...@freebsd.org>
+ * 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 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef DEV_FDT_RESET_H
+#define DEV_FDT_RESET_H
+
+#include "fdt_reset_if.h"
+
+/*
+ * Look up "resets" property in consumer's fdt data and assert or deassert all
+ * configured resets.
+ */
+int fdt_reset_assert_all(device_t consumer);
+int fdt_reset_deassert_all(device_t consumer);
+
+/*
+ * [Un]register the given device instance as a driver that implements the
+ * fdt_clock interface.
+ */
+void fdt_reset_register_provider(device_t provider);
+void fdt_reset_unregister_provider(device_t provider);
+
+#endif /* DEV_FDT_RESET_H */
+
Added: head/sys/mips/mediatek/fdt_reset_if.m
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/mips/mediatek/fdt_reset_if.m Thu Apr 7 11:02:49 2016
(r297666)
@@ -0,0 +1,58 @@
+#-
+# Copyright (c) 2016 Stanislav Galabov
+# Copyright (c) 2014 Ian Lepore
+# 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.
+#
+# $FreeBSD$
+#
+
+#include <sys/types.h>
+
+#
+# This is the interface that fdt_reset drivers provide to other drivers.
+# In this context, reset refers to a reset signal provided to some other
+# hardware component within the system. They are most often found within
+# embedded processors that have on-chip IO controllers.
+#
+
+INTERFACE fdt_reset;
+
+#
+# Enable/assert/apply the specified reset.
+# Returns 0 on success or a standard errno value.
+#
+METHOD int assert {
+ device_t provider;
+ int index;
+};
+
+#
+# Disable/de-assert/remove the specified reset.
+# Returns 0 on success or a standard errno value.
+#
+METHOD int deassert {
+ device_t provider;
+ int index;
+};
+
Added: head/sys/mips/mediatek/mtk_machdep.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/mips/mediatek/mtk_machdep.c Thu Apr 7 11:02:49 2016
(r297666)
@@ -0,0 +1,286 @@
+/*-
+ * 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
+}
+
+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;
+
+ /* 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));
+
+ 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);
+}
Added: head/sys/mips/mediatek/mtk_soc.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/mips/mediatek/mtk_soc.c Thu Apr 7 11:02:49 2016
(r297666)
@@ -0,0 +1,438 @@
+/*-
+ * Copyright (c) 2016 Stanislav Galabov.
+ * 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 <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+
+#include <machine/fdt.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/fdt/fdt_clock.h>
+
+#include <mips/mediatek/fdt_reset.h>
+#include <mips/mediatek/mtk_sysctl.h>
+#include <mips/mediatek/mtk_soc.h>
+
+static uint32_t mtk_soc_socid = MTK_SOC_UNKNOWN;
+static uint32_t mtk_soc_uartclk = 0;
+static uint32_t mtk_soc_cpuclk = MTK_CPU_CLK_880MHZ;
+static uint32_t mtk_soc_timerclk = MTK_CPU_CLK_880MHZ / 2;
+
+static const struct ofw_compat_data compat_data[] = {
+ { "ralink,rt3050-soc", MTK_SOC_RT3050 },
+ { "ralink,rt3052-soc", MTK_SOC_RT3052 },
+ { "ralink,rt3350-soc", MTK_SOC_RT3350 },
+ { "ralink,rt3352-soc", MTK_SOC_RT3352 },
+ { "ralink,rt3662-soc", MTK_SOC_RT3662 },
+ { "ralink,rt3883-soc", MTK_SOC_RT3883 },
+ { "ralink,rt5350-soc", MTK_SOC_RT5350 },
+ { "ralink,mtk7620a-soc", MTK_SOC_MT7620A },
+ { "ralink,mtk7620n-soc", MTK_SOC_MT7620N },
+ { "mediatek,mtk7621-soc", MTK_SOC_MT7621 },
+ { "ralink,mtk7621-soc", MTK_SOC_MT7621 },
+ { "ralink,mtk7628an-soc", MTK_SOC_MT7628 },
+ { "mediatek,mt7628an-soc", MTK_SOC_MT7628 },
+ { "ralink,mtk7688-soc", MTK_SOC_MT7688 },
+
+ /* Sentinel */
+ { NULL, MTK_SOC_UNKNOWN },
+};
+
+static uint32_t
+mtk_detect_cpuclk_rt305x(bus_space_tag_t bst, bus_space_handle_t bsh)
+{
+ uint32_t clk;
+
+ clk = bus_space_read_4(bst, bsh, SYSCTL_SYSCFG);
+ clk >>= RT305X_CPU_CLKSEL_OFF;
+ clk &= RT305X_CPU_CLKSEL_MSK;
+
+ return ((clk == 0) ? MTK_CPU_CLK_320MHZ : MTK_CPU_CLK_384MHZ);
+}
+
+static uint32_t
+mtk_detect_cpuclk_rt3352(bus_space_tag_t bst, bus_space_handle_t bsh)
+{
+ uint32_t val;
+
+ val = bus_space_read_4(bst, bsh, SYSCTL_SYSCFG);
+ val >>= RT3352_CPU_CLKSEL_OFF;
+ val &= RT3352_CPU_CLKSEL_MSK;
+
+ if (val)
+ return (MTK_CPU_CLK_400MHZ);
+
+ return (MTK_CPU_CLK_384MHZ);
+}
+
+static uint32_t
+mtk_detect_cpuclk_rt3883(bus_space_tag_t bst, bus_space_handle_t bsh)
+{
+ uint32_t val;
+
+ val = bus_space_read_4(bst, bsh, SYSCTL_SYSCFG);
+ val >>= RT3883_CPU_CLKSEL_OFF;
+ val &= RT3883_CPU_CLKSEL_MSK;
+
+ switch (val) {
+ case 0:
+ return (MTK_CPU_CLK_250MHZ);
+ case 1:
+ return (MTK_CPU_CLK_384MHZ);
+ case 2:
+ return (MTK_CPU_CLK_480MHZ);
+ case 3:
+ return (MTK_CPU_CLK_500MHZ);
+ }
+
+ /* Never reached */
+ return (0);
+}
+
+static uint32_t
+mtk_detect_cpuclk_rt5350(bus_space_tag_t bst, bus_space_handle_t bsh)
+{
+ uint32_t val1, val2;
+
+ val1 = val2 = bus_space_read_4(bst, bsh, SYSCTL_SYSCFG);
+
+ val1 >>= RT5350_CPU_CLKSEL_OFF1;
+ val2 >>= RT5350_CPU_CLKSEL_OFF2;
+ val1 &= RT5350_CPU_CLKSEL_MSK;
+ val2 &= RT5350_CPU_CLKSEL_MSK;
+ val1 |= (val2 << 1);
+
+ switch (val1) {
+ case 0:
+ return (MTK_CPU_CLK_360MHZ);
+ case 1:
+ /* Reserved value, but we return UNKNOWN */
+ return (MTK_CPU_CLK_UNKNOWN);
+ case 2:
+ return (MTK_CPU_CLK_320MHZ);
+ case 3:
+ return (MTK_CPU_CLK_300MHZ);
+ }
+
+ /* Never reached */
+ return (0);
+}
+
+static uint32_t
+mtk_detect_cpuclk_mt7620(bus_space_tag_t bst, bus_space_handle_t bsh)
+{
+ uint32_t val, mul, div, res;
+
+ val = bus_space_read_4(bst, bsh, SYSCTL_MT7620_CPLL_CFG1);
+ if (val & MT7620_CPU_CLK_AUX0)
+ return (MTK_CPU_CLK_480MHZ);
+
+ val = bus_space_read_4(bst, bsh, SYSCTL_MT7620_CPLL_CFG0);
+ if (!(val & MT7620_CPLL_SW_CFG))
+ return (MTK_CPU_CLK_600MHZ);
+
+ mul = MT7620_PLL_MULT_RATIO_BASE + ((val >> MT7620_PLL_MULT_RATIO_OFF) &
+ MT7620_PLL_MULT_RATIO_MSK);
+ div = (val >> MT7620_PLL_DIV_RATIO_OFF) & MT7620_PLL_DIV_RATIO_MSK;
+
+ if (div != MT7620_PLL_DIV_RATIO_MSK)
+ div += MT7620_PLL_DIV_RATIO_BASE;
+ else
+ div = MT7620_PLL_DIV_RATIO_MAX;
+
+ res = (MT7620_XTAL_40 * mul) / div;
+
+ return (MTK_MHZ(res));
+}
+
+static uint32_t
+mtk_detect_cpuclk_mt7621(bus_space_tag_t bst, bus_space_handle_t bsh)
+{
+ uint32_t val, div, res;
+
+ val = bus_space_read_4(bst, bsh, SYSCTL_CLKCFG0);
+ if (val & MT7621_USES_MEMDIV) {
+ div = bus_space_read_4(bst, bsh, MTK_MT7621_CLKDIV_REG);
+ div >>= MT7621_MEMDIV_OFF;
+ div &= MT7621_MEMDIV_MSK;
+ div += MT7621_MEMDIV_BASE;
+
+ val = bus_space_read_4(bst, bsh, SYSCTL_SYSCFG);
+ val >>= MT7621_CLKSEL_OFF;
+ val &= MT7621_CLKSEL_MSK;
+
+ if (val >= MT7621_CLKSEL_25MHZ_VAL)
+ res = div * MT7621_CLKSEL_25MHZ;
+ else if (val >= MT7621_CLKSEL_20MHZ_VAL)
+ res = div * MT7621_CLKSEL_20MHZ;
+ else
+ res = div * 0; /* XXX: not sure about this */
+ } else {
+ val = bus_space_read_4(bst, bsh, SYSCTL_CUR_CLK_STS);
+ div = (val >> MT7621_CLK_STS_DIV_OFF) & MT7621_CLK_STS_MSK;
+ val &= MT7621_CLK_STS_MSK;
+
+ res = (MT7621_CLK_STS_BASE * val) / div;
+ }
+
+ return (MTK_MHZ(res));
+}
+
+static uint32_t
+mtk_detect_cpuclk_mt7628(bus_space_tag_t bst, bus_space_handle_t bsh)
+{
+ uint32_t val;
+
+ val = bus_space_read_4(bst, bsh, SYSCTL_SYSCFG);
+ val >>= MT7628_CPU_CLKSEL_OFF;
+ val &= MT7628_CPU_CLKSEL_MSK;
+
+ if (val)
+ return (MTK_CPU_CLK_580MHZ);
+
+ return (MTK_CPU_CLK_575MHZ);
+}
+
+void
+mtk_soc_try_early_detect(void)
+{
+ bus_space_tag_t bst;
+ bus_space_handle_t bsh;
+ uint32_t base;
+ phandle_t node;
+ int i;
+
+ if ((node = OF_finddevice("/")) == -1)
+ return;
+
+ for (i = 0; compat_data[i].ocd_str != NULL; i++) {
+ if (fdt_is_compatible(node, compat_data[i].ocd_str)) {
+ mtk_soc_socid = compat_data[i].ocd_data;
+ break;
+ }
+ }
+
+ if (mtk_soc_socid == MTK_SOC_UNKNOWN) {
+ /* We don't know the SoC, so we don't know how to get clocks */
+ return;
+ }
+
+ bst = fdtbus_bs_tag;
+ if (mtk_soc_socid == MTK_SOC_MT7621)
+ base = MTK_MT7621_BASE;
+ else
+ base = MTK_DEFAULT_BASE;
+
+ if (bus_space_map(bst, MTK_DEFAULT_BASE, MTK_DEFAULT_SIZE, 0, &bsh))
+ return;
+
+ /* First, figure out the CPU clock */
+ switch (mtk_soc_socid) {
+ case MTK_SOC_RT3050: /* fallthrough */
+ case MTK_SOC_RT3052:
+ mtk_soc_cpuclk = mtk_detect_cpuclk_rt305x(bst, bsh);
+ break;
+ case MTK_SOC_RT3350:
+ mtk_soc_cpuclk = MTK_CPU_CLK_320MHZ;
+ break;
+ case MTK_SOC_RT3352:
+ mtk_soc_cpuclk = mtk_detect_cpuclk_rt3352(bst, bsh);
+ break;
+ case MTK_SOC_RT3662: /* fallthrough */
+ case MTK_SOC_RT3883:
+ mtk_soc_cpuclk = mtk_detect_cpuclk_rt3883(bst, bsh);
+ break;
+ case MTK_SOC_RT5350:
+ mtk_soc_cpuclk = mtk_detect_cpuclk_rt5350(bst, bsh);
+ break;
+ case MTK_SOC_MT7620A: /* fallthrough */
+ case MTK_SOC_MT7620N:
+ mtk_soc_cpuclk = mtk_detect_cpuclk_mt7620(bst, bsh);
+ break;
+ case MTK_SOC_MT7621:
+ mtk_soc_cpuclk = mtk_detect_cpuclk_mt7621(bst, bsh);
+ break;
+ case MTK_SOC_MT7628: /* fallthrough */
+ case MTK_SOC_MT7688:
+ mtk_soc_cpuclk = mtk_detect_cpuclk_mt7628(bst, bsh);
+ break;
+ default:
+ /* We don't know the SoC, so we can't find the CPU clock */
+ break;
+ }
+
+ /* Now figure out the timer clock */
+ if (mtk_soc_socid == MTK_SOC_MT7621) {
+#ifdef notyet
+ /*
+ * We use the GIC timer for timing source and its clock freq is
+ * the same as the CPU's clock freq
+ */
+ mtk_soc_timerclk = mtk_soc_cpuclk;
+#else
+ /*
+ * When GIC timer and MIPS timer are ready to co-exist and
+ * GIC timer is actually implemented, we need to switch to it.
+ * Until then we use a fake GIC timer, which is actually a
+ * normal MIPS ticker, so the timer clock is half the CPU clock
+ */
+ mtk_soc_timerclk = mtk_soc_cpuclk / 2;
+#endif
+ } else {
+ /*
+ * We use the MIPS ticker for the rest for now, so
+ * the CPU clock is divided by 2
+ */
+ mtk_soc_timerclk = mtk_soc_cpuclk / 2;
+ }
+
+ switch (mtk_soc_socid) {
+ case MTK_SOC_RT3350: /* fallthrough */
+ case MTK_SOC_RT3050: /* fallthrough */
+ case MTK_SOC_RT3052:
+ /* UART clock is CPU clock / 3 */
+ mtk_soc_uartclk = mtk_soc_cpuclk / MTK_UARTDIV_3;
+ break;
+ case MTK_SOC_RT3352: /* fallthrough */
+ case MTK_SOC_RT3662: /* fallthrough */
+ case MTK_SOC_RT3883: /* fallthrough */
+ case MTK_SOC_RT5350: /* fallthrough */
+ case MTK_SOC_MT7620A: /* fallthrough */
+ case MTK_SOC_MT7620N: /* fallthrough */
+ case MTK_SOC_MT7628: /* fallthrough */
+ case MTK_SOC_MT7688:
+ /* UART clock is always 40MHz */
+ mtk_soc_uartclk = MTK_UART_CLK_40MHZ;
+ break;
+ case MTK_SOC_MT7621:
+ /* UART clock is always 50MHz */
+ mtk_soc_uartclk = MTK_UART_CLK_50MHZ;
+ break;
+ default:
+ /* We don't know the SoC, so we don't know the UART clock */
+ break;
+ }
+
+ bus_space_unmap(bst, bsh, MTK_DEFAULT_SIZE);
+}
+
+uint32_t
+mtk_soc_get_uartclk(void)
+{
+
+ return mtk_soc_uartclk;
+}
+
+uint32_t
+mtk_soc_get_cpuclk(void)
+{
+
+ return mtk_soc_cpuclk;
+}
+
+uint32_t
+mtk_soc_get_timerclk(void)
+{
+
+ return mtk_soc_timerclk;
+}
+
+uint32_t
+mtk_soc_get_socid(void)
+{
+
+ return mtk_soc_socid;
+}
+
+/*
+ * The following are generic reset and clock functions
+ */
+
+/* Default reset time is 100ms */
+#define DEFAULT_RESET_TIME 100000
+
+int
+mtk_soc_reset_device(device_t dev)
+{
+ int res;
+
+ res = fdt_reset_assert_all(dev);
+ if (res == 0) {
+ DELAY(DEFAULT_RESET_TIME);
+ res = fdt_reset_deassert_all(dev);
+ if (res == 0)
+ DELAY(DEFAULT_RESET_TIME);
+ }
+
+ return (res);
+}
+
+int
+mtk_soc_stop_clock(device_t dev)
+{
+
+ return (fdt_clock_disable_all(dev));
+}
+
+int
+mtk_soc_start_clock(device_t dev)
+{
+
+ return (fdt_clock_enable_all(dev));
+}
+
+int
+mtk_soc_assert_reset(device_t dev)
+{
+
+ return (fdt_reset_assert_all(dev));
+}
+
+int
+mtk_soc_deassert_reset(device_t dev)
+{
+
+ return (fdt_reset_deassert_all(dev));
+}
+
+void
+mtk_soc_reset(void)
+{
+
+ mtk_sysctl_clr_set(SYSCTL_RSTCTRL, 0, 1);
+ mtk_sysctl_clr_set(SYSCTL_RSTCTRL, 1, 0);
+}
Added: head/sys/mips/mediatek/mtk_soc.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/mips/mediatek/mtk_soc.h Thu Apr 7 11:02:49 2016
(r297666)
@@ -0,0 +1,130 @@
+/*-
+ * Copyright (c) 2016 Stanislav Galabov.
+ * 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 unmodified, 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.
+ *
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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