Module Name: src
Committed By: macallan
Date: Wed Oct 14 15:44:57 UTC 2015
Modified Files:
src/sys/arch/mips/ingenic: ingenic_efuse.c
Log Message:
add some comments
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/sys/arch/mips/ingenic/ingenic_efuse.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/mips/ingenic/ingenic_efuse.c
diff -u src/sys/arch/mips/ingenic/ingenic_efuse.c:1.2 src/sys/arch/mips/ingenic/ingenic_efuse.c:1.3
--- src/sys/arch/mips/ingenic/ingenic_efuse.c:1.2 Thu Oct 8 18:20:31 2015
+++ src/sys/arch/mips/ingenic/ingenic_efuse.c Wed Oct 14 15:44:57 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: ingenic_efuse.c,v 1.2 2015/10/08 18:20:31 macallan Exp $ */
+/* $NetBSD: ingenic_efuse.c,v 1.3 2015/10/14 15:44:57 macallan Exp $ */
/*-
* Copyright (c) 2015 Michael Lorenz
@@ -26,8 +26,15 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
+/*
+ * a driver for the 'EFUSE Slave Interface' found on JZ4780
+ * more or less 8kBit of non-volatile storage containing things like MAC
+ * address, various encryption keys, boot code, serial numbers and parameters.
+ * Using it only to get the MAC address for now.
+ */
+
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ingenic_efuse.c,v 1.2 2015/10/08 18:20:31 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ingenic_efuse.c,v 1.3 2015/10/14 15:44:57 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -114,6 +121,7 @@ ingenic_efuse_read(struct efuse_softc *s
uint32_t abuf;
int i;
+ /* default, just in case */
bus_space_write_4(sc->sc_iot, sc->sc_ioh, JZ_EFUCFG, 0x00040000);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, JZ_EFUCTRL,
JZ_EFUSE_READ |
@@ -127,4 +135,4 @@ ingenic_efuse_read(struct efuse_softc *s
memcpy(buf, &abuf, 4);
buf += 4;
}
-}
\ No newline at end of file
+}
