[PATCH 18/37] iMX8M: Add support to enable CONFIG_IMX_HAB

[Peng Fan (OSS)]

From: Ye Li <ye.li at nxp.com>

Add some SOC level codes and build configurations to use HAB lib for
CONFIG_IMX_HAB (secure boot), like adding the SEC_CONFIG fuse, enable
fuse driver, CAAM clock function, and add CAAM secure RAM to MMU table.

The FSL_CAAM is temporally not enabled for iMX8M when CONFIG_IMX_HAB is set,
because we don't need the CAAM driver for SPL.

Signed-off-by: Ye Li <ye.li at nxp.com>
Reviewed-by: Peng Fan <peng.fan at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 arch/arm/include/asm/arch-imx8m/clock.h | 1 +
 arch/arm/mach-imx/Kconfig               | 2 +-
 arch/arm/mach-imx/Makefile              | 1 +
 arch/arm/mach-imx/imx8m/clock_imx8mm.c  | 8 ++++++++
 arch/arm/mach-imx/imx8m/clock_imx8mq.c  | 7 +++++++
 5 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/arch-imx8m/clock.h b/arch/arm/include/asm/arch-imx8m/clock.h
index c545eb82b6..77d9428a18 100644
--- a/arch/arm/include/asm/arch-imx8m/clock.h
+++ b/arch/arm/include/asm/arch-imx8m/clock.h
@@ -275,3 +275,4 @@ void enable_ocotp_clk(unsigned char enable);
 int enable_i2c_clk(unsigned char enable, unsigned int i2c_num);
 int set_clk_enet(enum enet_freq type);
 int set_clk_eqos(enum enet_freq type);
+void hab_caam_clock_enable(unsigned char enable);
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 6d40c7fc4b..8c00ad1391 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -43,7 +43,7 @@ config USE_IMXIMG_PLUGIN
 
 config IMX_HAB
 	bool "Support i.MX HAB features"
-	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX5
+	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX5 || ARCH_IMX8M
 	select FSL_CAAM if HAS_CAAM
 	imply CMD_DEKBLOB
 	help
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 25f910b36a..63b3549d20 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -16,6 +16,7 @@ endif
 obj-$(CONFIG_ENV_IS_IN_MMC) += mmc_env.o
 obj-$(CONFIG_FEC_MXC) += mac.o
 obj-$(CONFIG_SYS_I2C_MXC) += i2c-mxv7.o
+obj-$(CONFIG_IMX_HAB) += hab.o
 obj-y += cpu.o
 endif
 
diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
index 4024dafca1..029d06f27f 100644
--- a/arch/arm/mach-imx/imx8m/clock_imx8mm.c
+++ b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
@@ -21,6 +21,14 @@ DECLARE_GLOBAL_DATA_PTR;
 static struct anamix_pll *ana_pll = (struct anamix_pll *)ANATOP_BASE_ADDR;
 
 static u32 get_root_clk(enum clk_root_index clock_id);
+
+#ifdef CONFIG_IMX_HAB
+void hab_caam_clock_enable(unsigned char enable)
+{
+	/* The CAAM clock is always on for iMX8M */
+}
+#endif
+
 void enable_ocotp_clk(unsigned char enable)
 {
 	clock_enable(CCGR_OCOTP, !!enable);
diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mq.c b/arch/arm/mach-imx/imx8m/clock_imx8mq.c
index 759ec6d114..8fecc60ecb 100644
--- a/arch/arm/mach-imx/imx8m/clock_imx8mq.c
+++ b/arch/arm/mach-imx/imx8m/clock_imx8mq.c
@@ -310,6 +310,13 @@ static u32 get_root_clk(enum clk_root_index clock_id)
 	return root_src_clk / (post_podf + 1) / (pre_podf + 1);
 }
 
+#ifdef CONFIG_IMX_HAB
+void hab_caam_clock_enable(unsigned char enable)
+{
+	/* The CAAM clock is always on for iMX8M */
+}
+#endif
+
 #ifdef CONFIG_MXC_OCOTP
 void enable_ocotp_clk(unsigned char enable)
 {
-- 
2.25.1