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 <bryan.odonog...@linaro.org>
Cc: Stefano Babic <sba...@denx.de>
Cc: Fabio Estevam <fabio.este...@nxp.com>
Cc: Peng Fan <peng....@nxp.com>
Cc: Albert Aribaud <albert.u.b...@aribaud.net>
Cc: Sven Ebenfeld <sven.ebenf...@gmail.com>
Cc: George McCollister <george.mccollis...@gmail.com>
Cc: Breno Matheus Lima <brenomath...@gmail.com>
---
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 28cde38..14e1220 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))
--
2.7.4
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