iMX8M: Add support to enable CONFIG_IMX_HAB

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@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/arch/arm/include/asm/arch-imx8m/clock.h b/arch/arm/include/asm/arch-imx8m/clock.h
index c545eb8..77d9428 100644 (file)
--- 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 6d40c7f..8c00ad1 100644 (file)
--- 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 25f910b..63b3549 100644 (file)
--- 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 4024daf..029d06f 100644 (file)
--- 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 759ec6d..8fecc60 100644 (file)
--- 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)
 {