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[src/trunk]: src/sys/arch/evbarm Add support for GPIO configuration via "FEX"...
details: https://anonhg.NetBSD.org/src/rev/cf60f1cf2ddb
branches: trunk
changeset: 333173:cf60f1cf2ddb
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Wed Oct 22 00:24:52 2014 +0000
description:
Add support for GPIO configuration via "FEX" scripts, in an attempt to
keep awin_device_register under control.
Board configuration scripts can be found here:
https://github.com/linux-sunxi/sunxi-boards/blob/master/sys_config
You can compile them with the "fex2bin" tool found here:
https://github.com/linux-sunxi/sunxi-tools
To use, copy the compiled FEX to your MS-DOS partition, load it with
U-Boot, and then tell the kernel where to find it with the "sysconfig="
boot option. For example, uEnv.txt on a Cubieboard2 might look like this:
bootargs=root=ld0a sysconfig=0x43000000
uenvcmd=mmc dev 0; mmc rescan; fatload mmc 0:1 43000000 cubieboard2.bin; fatload mmc 0:1 82000000 netbsd.ub; bootm 82000000
diffstat:
sys/arch/evbarm/awin/awin_machdep.c | 76 ++++++++++++-
sys/arch/evbarm/awin/awin_sysconfig.c | 197 ++++++++++++++++++++++++++++++++++
sys/arch/evbarm/awin/awin_sysconfig.h | 38 ++++++
sys/arch/evbarm/conf/files.awin | 7 +-
sys/arch/evbarm/conf/std.awin | 3 +-
5 files changed, 317 insertions(+), 4 deletions(-)
diffs (truncated from 414 to 300 lines):
diff -r 3b4794d49e27 -r cf60f1cf2ddb sys/arch/evbarm/awin/awin_machdep.c
--- a/sys/arch/evbarm/awin/awin_machdep.c Wed Oct 22 00:16:29 2014 +0000
+++ b/sys/arch/evbarm/awin/awin_machdep.c Wed Oct 22 00:24:52 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: awin_machdep.c,v 1.19 2014/10/19 22:37:08 jmcneill Exp $ */
+/* $NetBSD: awin_machdep.c,v 1.20 2014/10/22 00:24:52 jmcneill Exp $ */
/*
* Machine dependent functions for kernel setup for TI OSK5912 board.
@@ -125,7 +125,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: awin_machdep.c,v 1.19 2014/10/19 22:37:08 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: awin_machdep.c,v 1.20 2014/10/22 00:24:52 jmcneill Exp $");
#include "opt_machdep.h"
#include "opt_ddb.h"
@@ -182,6 +182,10 @@
#include <evbarm/include/autoconf.h>
#include <evbarm/awin/platform.h>
+#ifdef AWIN_SYSCONFIG
+#include <evbarm/awin/awin_sysconfig.h>
+#endif
+
#include <dev/i2c/i2cvar.h>
#include <dev/i2c/ddcreg.h>
@@ -201,6 +205,12 @@
#define cubietruck_p false
#endif
+#ifdef AWIN_SYSCONFIG
+bool awin_sysconfig_p;
+#else
+#define awin_sysconfig_p false
+#endif
+
/*
* uboot_args are filled in by awin_start.S and must be in .data
* and not .bss since .bss is cleared after uboot_args are filled in.
@@ -236,6 +246,10 @@
static void awin_device_register(device_t, void *);
+#ifdef AWIN_SYSCONFIG
+static void awin_gpio_sysconfig(prop_dictionary_t);
+#endif
+
#if NCOM > 0
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
@@ -416,11 +430,18 @@
(uboot_args[3] + KERNEL_BASE_VOFFSET);
strlcpy(bootargs, args, sizeof(bootargs));
}
+
}
boot_args = bootargs;
parse_mi_bootargs(boot_args);
+#ifdef AWIN_SYSCONFIG
+ if (mapallmem_p) {
+ awin_sysconfig_p = awin_sysconfig_init();
+ }
+#endif
+
/* we've a specific device_register routine */
evbarm_device_register = awin_device_register;
@@ -586,6 +607,16 @@
}
if (device_is_a(self, "awingpio")) {
+#ifdef AWIN_SYSCONFIG
+ /*
+ * Configure GPIOs using FEX script
+ */
+ if (awin_sysconfig_p) {
+ awin_gpio_sysconfig(dict);
+ return;
+ }
+#endif
+
/*
* These are GPIOs being used for various functions.
*/
@@ -720,3 +751,44 @@
return;
}
}
+
+#ifdef AWIN_SYSCONFIG
+static void
+awin_gpio_sysconfig(prop_dictionary_t dict)
+{
+ static const struct {
+ const char *prop;
+ const char *key;
+ const char *subkey;
+ } gpios[] = {
+ { "satapwren", "sata_para", "sata_power_en" },
+ { "usb0drv", "usbc0", "usb_drv_vbus_gpio" },
+ { "usb0iddet", "usbc0", "usb_id_gpio" },
+ { "usb0vbusdet", "usbc0", "usb_det_vbus_gpio" },
+ { "usb1drv", "usbc1", "usb_drv_vbus_gpio" },
+ { "usb1iddet", "usbc1", "usb_id_gpio" },
+ { "usb1vbusdet", "usbc1", "usb_det_vbus_gpio" },
+ { "usb2drv", "usbc2", "usb_drv_vbus_gpio" },
+ { "usb2iddet", "usbc2", "usb_id_gpio" },
+ { "usb2vbusdet", "usbc2", "usb_det_vbus_gpio" },
+ { "status-led1", "leds_para", "leds_pin_1" },
+ { "status-led2", "leds_para", "leds_pin_2" },
+ { "status-led3", "leds_para", "leds_pin_3" },
+ { "status-led4", "leds_para", "leds_pin_4" },
+ { "mmc0detect", "mmc0_para", "sdc_det" },
+ { "audiopactrl", "audio_para", "audio_pa_ctrl" },
+ };
+ unsigned int n;
+
+ aprint_normal(":");
+
+ for (n = 0; n < __arraycount(gpios); n++) {
+ const char *cfg = awin_sysconfig_get_gpio(
+ gpios[n].key, gpios[n].subkey);
+ if (cfg) {
+ aprint_normal(" [%s %s]", gpios[n].prop, cfg);
+ prop_dictionary_set_cstring(dict, gpios[n].prop, cfg);
+ }
+ }
+}
+#endif
diff -r 3b4794d49e27 -r cf60f1cf2ddb sys/arch/evbarm/awin/awin_sysconfig.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/evbarm/awin/awin_sysconfig.c Wed Oct 22 00:24:52 2014 +0000
@@ -0,0 +1,197 @@
+/* $NetBSD: awin_sysconfig.c,v 1.1 2014/10/22 00:24:52 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2014 Jared D. McNeill <jmcneill%invisible.ca@localhost>
+ * 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.
+ */
+
+#include "opt_allwinner.h"
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: awin_sysconfig.c,v 1.1 2014/10/22 00:24:52 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+
+#include <machine/bootconfig.h>
+
+#include <arm/allwinner/awin_reg.h>
+#include <arm/allwinner/awin_var.h>
+
+#include <evbarm/awin/awin_sysconfig.h>
+
+static paddr_t awin_sysconfig_base = 0;
+#define AWIN_SYSCONFIG_SIZE 0x10000
+
+#define AWIN_SYSCONFIG_TYPE_UNKNOWN 0
+#define AWIN_SYSCONFIG_TYPE_SINGLE_WORD 1
+#define AWIN_SYSCONFIG_TYPE_STRING 2
+#define AWIN_SYSCONFIG_TYPE_MULTI_WORD 3
+#define AWIN_SYSCONFIG_TYPE_GPIO 4
+
+static uint8_t awin_sysconfig[AWIN_SYSCONFIG_SIZE];
+
+struct awin_sysconfig_head {
+ uint32_t count;
+ uint32_t version[3];
+} __packed;
+
+struct awin_sysconfig_main_key {
+ char name[32];
+ uint32_t count;
+ uint32_t offset;
+} __packed;
+
+struct awin_sysconfig_sub_key {
+ char name[32];
+ uint32_t offset;
+ uint16_t count;
+ uint16_t type;
+} __packed;
+
+struct awin_sysconfig_gpio {
+ char name[32];
+ uint32_t port;
+ uint32_t port_num;
+ int32_t mul_sel;
+ int32_t pull;
+ int32_t drv_level;
+ int32_t data;
+} __packed;
+
+static bool awin_sysconfig_parse(const char *, const char *,
+ struct awin_sysconfig_sub_key *);
+
+bool
+awin_sysconfig_init(void)
+{
+ if (get_bootconf_option(boot_args, "sysconfig",
+ BOOTOPT_TYPE_HEXINT, &awin_sysconfig_base) == 0) {
+ return false;
+ }
+ if (awin_sysconfig_base == 0) {
+ return false;
+ }
+
+ const uint8_t * const sysconfig = (const uint8_t *)
+ (awin_sysconfig_base + KERNEL_BASE_VOFFSET);
+ memcpy(awin_sysconfig, sysconfig, AWIN_SYSCONFIG_SIZE);
+
+ return true;
+}
+
+static bool
+awin_sysconfig_parse(const char *key, const char *subkey,
+ struct awin_sysconfig_sub_key *value)
+{
+ struct awin_sysconfig_head head;
+ struct awin_sysconfig_main_key main_key;
+ struct awin_sysconfig_sub_key sub_key;
+ unsigned int off, n;
+
+ KASSERT(awin_sysconfig_base != 0);
+
+ memcpy(&head, &awin_sysconfig[0], sizeof(head));
+
+ for (n = 0, off = sizeof(head); n < head.count;
+ n++, off += sizeof(main_key)) {
+ memcpy(&main_key, &awin_sysconfig[off], sizeof(main_key));
+ if (strcmp(key, main_key.name) == 0) {
+ break;
+ }
+ }
+ if (n == head.count) {
+ return false;
+ }
+
+ for (n = 0, off = main_key.offset << 2; n < main_key.count;
+ n++, off += sizeof(sub_key)) {
+ memcpy(&sub_key, &awin_sysconfig[off], sizeof(sub_key));
+ if (strcmp(subkey, sub_key.name) == 0) {
+ break;
+ }
+ }
+ if (n == main_key.count) {
+ return false;
+ }
+
+ memcpy(value, &sub_key, sizeof(*value));
+
+ return true;
+}
+
+int
+awin_sysconfig_get_int(const char *key, const char *subkey)
+{
+ struct awin_sysconfig_sub_key value;
+ int ret;
+
+ if (awin_sysconfig_parse(key, subkey, &value) == false)
+ return -1;
+
+ KASSERT(value.type == AWIN_SYSCONFIG_TYPE_SINGLE_WORD);
+
+ memcpy(&ret, &awin_sysconfig[value.offset << 2], sizeof(ret));
+
+ return ret;
+}
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