From 1addedadc4e9a7ca05a985fb6bf9b07c6458ff27 Mon Sep 17 00:00:00 2001 From: Bryan O'Donoghue Date: Fri, 12 Jan 2018 12:40:08 +0000 Subject: [PATCH] arm: imx: hab: Define rvt_check_target() The hab_rvt_check_target() callback according to the HABv4 documentation: "This function reports whether or not a given target region is allowed for either peripheral configuration or image loading in memory. It is intended for use by post-ROM boot stage components, via the ROM Vector Table, in order to avoid configuring security-sensitive peripherals, or loading images over sensitive memory regions or outside recognized memory devices in the address map." It is a useful function to support as a precursor to calling into authenticate_image() to validate the target memory region is good. Signed-off-by: Bryan O'Donoghue Cc: Stefano Babic Cc: Fabio Estevam Cc: Peng Fan Cc: Albert Aribaud Cc: Sven Ebenfeld Cc: George McCollister Cc: Breno Matheus Lima Tested-by: Breno Lima Reviewed-by: Fabio Estevam --- arch/arm/include/asm/mach-imx/hab.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/include/asm/mach-imx/hab.h b/arch/arm/include/asm/mach-imx/hab.h index 28cde38462..14e12203c2 100644 --- a/arch/arm/include/asm/mach-imx/hab.h +++ b/arch/arm/include/asm/mach-imx/hab.h @@ -113,6 +113,12 @@ enum hab_context { HAB_CTX_MAX }; +enum hab_target { + HAB_TGT_MEMORY = 0x0f, + HAB_TGT_PERIPHERAL = 0xf0, + HAB_TGT_ANY = 0x55, +}; + struct imx_sec_config_fuse_t { int bank; int word; @@ -132,6 +138,8 @@ typedef enum hab_status hab_rvt_entry_t(void); typedef enum hab_status hab_rvt_exit_t(void); typedef void *hab_rvt_authenticate_image_t(uint8_t, ptrdiff_t, void **, size_t *, hab_loader_callback_f_t); +typedef enum hab_status hab_rvt_check_target_t(enum hab_target, const void *, + size_t); typedef void hapi_clock_init_t(void); #define HAB_ENG_ANY 0x00 /* Select first compatible engine */ @@ -158,6 +166,7 @@ typedef void hapi_clock_init_t(void); #define HAB_RVT_ENTRY (*(uint32_t *)(HAB_RVT_BASE + 0x04)) #define HAB_RVT_EXIT (*(uint32_t *)(HAB_RVT_BASE + 0x08)) +#define HAB_RVT_CHECK_TARGET (*(uint32_t *)(HAB_RVT_BASE + 0x0C)) #define HAB_RVT_AUTHENTICATE_IMAGE (*(uint32_t *)(HAB_RVT_BASE + 0x10)) #define HAB_RVT_REPORT_EVENT (*(uint32_t *)(HAB_RVT_BASE + 0x20)) #define HAB_RVT_REPORT_STATUS (*(uint32_t *)(HAB_RVT_BASE + 0x24))