imx: HAB: Update hab codes to support ARM64 and i.MX8M
There are some changes to support ARM64 i.MX8M platform in this patches:
1. The hab_rvt base and function vectors are different as i.MX6/7
2. Need to bypass an workaround for i.MX6 to fix problem in MMU.
3. The x18 register needed save & restore before calling any HAB API. According
to ARM procedure call spec, the x18 is caller saved when it is used as
temporary register. So calling HAB API may scratch this register, and
cause crash once accessing the gd pointer.
On ARMv7, the r9 is callee saved when it is used as variable register. So
no need to save & restore it.
4. Add SEC_CONFIG fuse for iMX8M
When current EL is not EL3, the direct calling to HAB will fail because
CAAM/SNVS can't initialize at non-secure mode. In this case, we use
SIP call to run the HAB in ATF.
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/include/asm/mach-imx/hab.h b/arch/arm/include/asm/mach-imx/hab.h
index d8bd770..c4393ef 100644
--- a/arch/arm/include/asm/mach-imx/hab.h
+++ b/arch/arm/include/asm/mach-imx/hab.h
@@ -165,6 +165,18 @@
#define HAB_ENG_RTL 0x77 /* RTL simulation engine */
#define HAB_ENG_SW 0xff /* Software engine */
+#ifdef CONFIG_ARM64
+#define HAB_RVT_BASE 0x00000880
+
+#define HAB_RVT_ENTRY (*(ulong *)(HAB_RVT_BASE + 0x08))
+#define HAB_RVT_EXIT (*(ulong *)(HAB_RVT_BASE + 0x10))
+#define HAB_RVT_CHECK_TARGET (*(ulong *)(HAB_RVT_BASE + 0x18))
+#define HAB_RVT_AUTHENTICATE_IMAGE (*(ulong *)(HAB_RVT_BASE + 0x20))
+#define HAB_RVT_REPORT_EVENT (*(ulong *)(HAB_RVT_BASE + 0x40))
+#define HAB_RVT_REPORT_STATUS (*(ulong *)(HAB_RVT_BASE + 0x48))
+#define HAB_RVT_FAILSAFE (*(ulong *)(HAB_RVT_BASE + 0x50))
+#else
+
#ifdef CONFIG_ROM_UNIFIED_SECTIONS
#define HAB_RVT_BASE 0x00000100
#else
@@ -186,6 +198,8 @@
#define HAB_RVT_REPORT_STATUS (*(uint32_t *)(HAB_RVT_BASE + 0x24))
#define HAB_RVT_FAILSAFE (*(uint32_t *)(HAB_RVT_BASE + 0x28))
+#endif /*CONFIG_ARM64*/
+
#define HAB_CID_ROM 0 /**< ROM Caller ID */
#define HAB_CID_UBOOT 1 /**< UBOOT Caller ID*/