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authorAmaury Pouly <amaury.pouly@gmail.com>2012-05-31 13:54:43 +0200
committerAmaury Pouly <amaury.pouly@gmail.com>2012-05-31 13:57:25 +0200
commit64b8d1ed7c68e1805c2e35dbf5be42ff10c3e2a5 (patch)
tree452eeb92518d77ee9b849c62aa58e82ae68a5e42 /firmware/target/arm/imx233/ocotp-imx233.h
parenta87a9ef37372b4380808ec2efa7c762e137668f1 (diff)
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imx233: add ocotp driver
Change-Id: If4ed62ece056e81665a00af39eb1c57bb2c42b22
Diffstat (limited to 'firmware/target/arm/imx233/ocotp-imx233.h')
-rw-r--r--firmware/target/arm/imx233/ocotp-imx233.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/ocotp-imx233.h b/firmware/target/arm/imx233/ocotp-imx233.h
new file mode 100644
index 0000000000..476ed1f73c
--- /dev/null
+++ b/firmware/target/arm/imx233/ocotp-imx233.h
@@ -0,0 +1,77 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2012 by Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef OCOTP_IMX233_H
+#define OCOTP_IMX233_H
+
+#include "config.h"
+#include "system.h"
+
+#define HW_OCOTP_BASE 0x8002c000
+
+#define HW_OCOTP_CTRL (*(volatile uint32_t *)(HW_OCOTP_BASE + 0x0))
+#define HW_OCOTP_CTRL__RD_BANK_OPEN (1 << 12)
+#define HW_OCOTP_CTRL__ERROR (1 << 9)
+#define HW_OCOTP_CTRL__BUSY (1 << 8)
+
+#define HW_OCOTP_CUSTx(x) (*(volatile uint32_t *)(HW_OCOTP_BASE + 0x20 + 0x10 * (x)))
+
+#define HW_OCOTP_CRYPTOx(x) (*(volatile uint32_t *)(HW_OCOTP_BASE + 0x60 + 0x10 * (x)))
+
+#define HW_OCOTP_HWCAPx(x) (*(volatile uint32_t *)(HW_OCOTP_BASE + 0xa0 + 0x10 * (x)))
+
+#define HW_OCOTP_SWCAP (*(volatile uint32_t *)(HW_OCOTP_BASE + 0x100))
+
+#define HW_OCOTP_CUSTCAP (*(volatile uint32_t *)(HW_OCOTP_BASE + 0x110))
+
+#define HW_OCOTP_OPSx(x) (*(volatile uint32_t *)(HW_OCOTP_BASE + 0x130 + 0x10 * (x)))
+
+#define HW_OCOTP_UNx(x) (*(volatile uint32_t *)(HW_OCOTP_BASE + 0x170 + 0x10 * (x)))
+
+#define HW_OCOTP_ROMx(x) (*(volatile uint32_t *)(HW_OCOTP_BASE + 0x1a0 + 0x10 * (x)))
+
+#define IMX233_NUM_OCOTP_CUST 4
+#define IMX233_NUM_OCOTP_CRYPTO 4
+#define IMX233_NUM_OCOTP_HWCAP 6
+#define IMX233_NUM_OCOTP_OPS 4
+#define IMX233_NUM_OCOTP_UN 3
+#define IMX233_NUM_OCOTP_ROM 8
+
+static void imx233_ocotp_open_banks(bool open)
+{
+ if(open)
+ {
+ __REG_CLR(HW_OCOTP_CTRL) = HW_OCOTP_CTRL__ERROR;
+ __REG_SET(HW_OCOTP_CTRL) = HW_OCOTP_CTRL__RD_BANK_OPEN;
+ while(HW_OCOTP_CTRL & HW_OCOTP_CTRL__BUSY);
+ }
+ else
+ __REG_CLR(HW_OCOTP_CTRL) = HW_OCOTP_CTRL__RD_BANK_OPEN;
+}
+
+static uint32_t imx233_ocotp_read(volatile uint32_t *reg)
+{
+ imx233_ocotp_open_banks(true);
+ uint32_t val = *reg;
+ imx233_ocotp_open_banks(false);
+ return val;
+}
+
+#endif /* OCOTP_IMX233_H */