MLK-10958 imx: mx6ul support Bus Encryption Engine

This patch is to support Bus Encryption Engine(BEE) for i.MX 6UL.
Supported feature:
1. SNVS key and soft key
2. CTR and ECB mode
3. Specify address region to bee.

Two commands are included:
bee init [key] [mode] [start] [end] - BEE block initial
    "Example: bee init 1 1 0x80000000 0x80010000\n"
bee test [region]
    "Example: bee test 1\n"

Mapping:
[0x10000000 - (0x10000000 + size - 1)] : [start - (start + size - 1)]
[0x30000000 - (0x30000000 + IRAM_SIZE - 1)] : [IRAM_BASE_ADDR -
(IRAM_BASE_ADDR + IRAM_SIZE - 1)]

Whatever start is, start - (start + size -1) will be fixed mapping to
0x10000000 - (0x10000000 + size - 1)

Since default AES region's protected size is SZ_512M, so
on mx6ul evk board, you can not simply run 'bee init', it will
overlap with uboot execution environment, you can use
'bee init 0 0 0x80000000 0x81000000'.

If want to use bee, Need to define CONFIG_CMD_BEE in board configuration
header file, since CONFIG_CMD_BEE default is not enabled.

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-mx6/mx6_bee.h b/arch/arm/include/asm/arch-mx6/mx6_bee.h
new file mode 100644
index 0000000..eb51dfe
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx6/mx6_bee.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#define GPR0           0x0
+#define GPR1           0x4
+#define GPR2           0x8
+#define GPR3           0xC
+#define GPR4           0x10
+#define GPR5           0x14
+#define GPR6           0x18
+#define GPR7           0x1C
+#define GPR8           0x20
+#define GPR9           0x24
+#define GPR10          0x28
+#define GPR11          0x2C
+
+#define GPR0_CTRL_CLK_EN_LOCK	(1 << 31)
+#define GPR0_CTRL_CLK_EN	(1 << 15)
+#define GPR0_CTRL_SFTRST_N_LOCK	(1 << 30)
+#define GPR0_CTRL_SFTRST	(0 << 14)
+#define GPR0_CTRL_SFTRST_N	(1 << 14)
+#define GPR0_CTRL_AES_MODE_LOCK	(1 << 29)
+#define GPR0_CTRL_AES_MODE_ECB	(0 << 13)
+#define GPR0_CTRL_AES_MODE_CTR	(1 << 13)
+#define GPR0_SEC_LEVEL_LOCK	(3 << 24)
+#define GPR0_SEC_LEVEL		(3 << 8)
+#define GPR0_AES_KEY_SEL_LOCK	(1 << 20)
+#define GPR0_AES_KEY_SEL_SNVS	(0 << 4)
+#define GPR0_AES_KEY_SEL_SOFT	(1 << 4)
+#define GPR0_BEE_ENABLE_LOCK	(1 << 16)
+#define GPR0_BEE_ENABLE		(1 << 0)
+
+/*
+ * SECURITY LEVEL
+ *        Non-Secure User |  Non-Secure Spvr | Secure User | Secure Spvr
+ * Level
+ * (0)00      RD + WR           RD + WR          RD + WR       RD + WR
+ * (1)01      None              RD + WR          RD + WR       RD + WR
+ * (2)10      None              None             RD + WR       RD + WR
+ * (3)11      None              None             None          RD + WR
+ */
+#define GPR0_SEC_LEVEL_0	(0 << 8)
+#define GPR0_SEC_LEVEL_1	(1 << 8)
+#define GPR0_SEC_LEVEL_2	(2 << 8)
+#define GPR0_SEC_LEVEL_3	(3 << 8)