Module Name: src
Committed By: jmcneill
Date: Tue Oct 3 23:42:17 UTC 2017
Modified Files:
src/sys/arch/arm/sunxi: files.sunxi
Added Files:
src/sys/arch/arm/sunxi: sunxi_sid.c
Log Message:
Add a simple Security ID EFUSE driver.
To generate a diff of this commit:
cvs rdiff -u -r1.24 -r1.25 src/sys/arch/arm/sunxi/files.sunxi
cvs rdiff -u -r0 -r1.1 src/sys/arch/arm/sunxi/sunxi_sid.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/arm/sunxi/files.sunxi
diff -u src/sys/arch/arm/sunxi/files.sunxi:1.24 src/sys/arch/arm/sunxi/files.sunxi:1.25
--- src/sys/arch/arm/sunxi/files.sunxi:1.24 Sat Sep 30 12:48:58 2017
+++ src/sys/arch/arm/sunxi/files.sunxi Tue Oct 3 23:42:17 2017
@@ -1,4 +1,4 @@
-# $NetBSD: files.sunxi,v 1.24 2017/09/30 12:48:58 jmcneill Exp $
+# $NetBSD: files.sunxi,v 1.25 2017/10/03 23:42:17 jmcneill Exp $
#
# Configuration info for Allwinner sunxi family SoCs
#
@@ -169,6 +169,11 @@ file arch/arm/sunxi/sunxi_ts.c sunxi_ts
attach motg at fdt with sunxi_musb
file arch/arm/sunxi/sunxi_musb.c sunxi_musb
+# Security ID EFUSE
+device sunxisid
+attach sunxisid at fdt with sunxi_sid
+file arch/arm/sunxi/sunxi_sid.c sunxi_sid
+
# SOC parameters
defflag opt_soc.h SOC_SUNXI
defflag opt_soc.h SOC_SUN5I: SOC_SUNXI
Added files:
Index: src/sys/arch/arm/sunxi/sunxi_sid.c
diff -u /dev/null src/sys/arch/arm/sunxi/sunxi_sid.c:1.1
--- /dev/null Tue Oct 3 23:42:17 2017
+++ src/sys/arch/arm/sunxi/sunxi_sid.c Tue Oct 3 23:42:17 2017
@@ -0,0 +1,127 @@
+/* $NetBSD: sunxi_sid.c,v 1.1 2017/10/03 23:42:17 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2017 Jared McNeill <jmcne...@invisible.ca>
+ * 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 <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: sunxi_sid.c,v 1.1 2017/10/03 23:42:17 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+
+#include <dev/fdt/fdtvar.h>
+
+#include <arm/sunxi/sunxi_sid.h>
+
+#define EFUSE_THERMAL_CALIB0 0x34
+#define EFUSE_THERMAL_CALIB1 0x38
+
+struct sunxi_sid_config {
+ bus_size_t efuse_offset;
+};
+
+static const struct sunxi_sid_config sun4i_a10_sid_config = {
+ .efuse_offset = 0,
+};
+
+static const struct sunxi_sid_config sun8i_h3_sid_config = {
+ .efuse_offset = 0x200,
+};
+
+static const struct of_compat_data compat_data[] = {
+ { "allwinner,sun4i-a10-sid", (uintptr_t)&sun4i_a10_sid_config },
+ { "allwinner,sun7i-a20-sid", (uintptr_t)&sun4i_a10_sid_config },
+ { "allwinner,sun8i-h3-sid", (uintptr_t)&sun8i_h3_sid_config },
+ { NULL }
+};
+
+struct sunxi_sid_softc {
+ device_t sc_dev;
+ bus_space_tag_t sc_bst;
+ bus_space_handle_t sc_bsh;
+ const struct sunxi_sid_config *sc_conf;
+};
+
+static struct sunxi_sid_softc *sid_softc = NULL;
+
+#define EFUSE_READ(sc, reg) \
+ bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (sc)->sc_conf->efuse_offset + (reg))
+#define EFUSE_WRITE(sc, reg, val) \
+ bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (sc)->sc_conf->efuse_offset + (reg), (val))
+
+static int
+sunxi_sid_match(device_t parent, cfdata_t cf, void *aux)
+{
+ struct fdt_attach_args * const faa = aux;
+
+ return of_match_compat_data(faa->faa_phandle, compat_data);
+}
+
+static void
+sunxi_sid_attach(device_t parent, device_t self, void *aux)
+{
+ struct sunxi_sid_softc * const sc = device_private(self);
+ struct fdt_attach_args * const faa = aux;
+ const int phandle = faa->faa_phandle;
+ bus_addr_t addr;
+ bus_size_t size;
+
+ if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
+ aprint_error(": couldn't get registers\n");
+ return;
+ }
+
+ sc->sc_dev = self;
+ sc->sc_bst = faa->faa_bst;
+ if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) {
+ aprint_error(": couldn't map registers\n");
+ return;
+ }
+ sc->sc_conf = (void *)of_search_compatible(phandle, compat_data)->data;
+
+ aprint_naive("\n");
+ aprint_normal(": Security ID EFUSE\n");
+
+ KASSERT(sid_softc == NULL);
+ sid_softc = sc;
+}
+
+CFATTACH_DECL_NEW(sunxi_sid, sizeof(struct sunxi_sid_softc),
+ sunxi_sid_match, sunxi_sid_attach, NULL, NULL);
+
+int
+sunxi_sid_read_tscalib(uint32_t *calib)
+{
+ if (sid_softc == NULL)
+ return ENXIO;
+
+ calib[0] = EFUSE_READ(sid_softc, EFUSE_THERMAL_CALIB0);
+ calib[1] = EFUSE_READ(sid_softc, EFUSE_THERMAL_CALIB1);
+ return 0;
+}
