diff options
| author | Breno Matheus Lima <breno.lima@nxp.com> | 2018-12-07 22:31:49 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2019-01-28 12:45:45 +0100 |
| commit | b2ca8907d92434300e081e0f23ec589a2de1be9f (patch) | |
| tree | eaac0d2eccfe832581103eed5510b8b8f6581e46 /arch | |
| parent | d01806a8fcbdaedcc67cead56ece572021d97ab7 (diff) | |
imx: hab: Convert non-NULL IVT DCD pointer warning to an error
The following NXP application notes and manual recommend to ensure the
IVT DCD pointer is Null prior to calling HAB API authenticate_image()
function:
- AN12263: HABv4 RVT Guidelines and Recommendations
- AN4581: Secure Boot on i.MX50, i.MX53, i.MX 6 and i.MX7 Series using
HABv4
- CST docs: High Assurance Boot Version 4 Application Programming
Interface Reference Manual
Commit ca89df7dd46f ("imx: hab: Convert DCD non-NULL error to warning")
converted DCD non-NULL error to warning due to the lack of documentation
at the time of first patch submission. We have warned U-Boot users since
v2018.03, and it makes sense now to follow the NXP recommendation to
ensure the IVT DCD pointer is Null.
DCD commands should only be present in the initial boot image loaded by
the SoC ROM. Starting in HAB v4.3.7 the HAB code will generate an error
if a DCD pointer is present in an image being authenticated by calling the
HAB RVT API. Older versions of HAB will process and run DCD if it is
present, and this could lead to an incorrect authentication boot flow.
Signed-off-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-imx/hab.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/mach-imx/hab.c b/arch/arm/mach-imx/hab.c index dbfd692fa3..d42a15e877 100644 --- a/arch/arm/mach-imx/hab.c +++ b/arch/arm/mach-imx/hab.c @@ -585,8 +585,10 @@ int imx_hab_authenticate_image(uint32_t ddr_start, uint32_t image_size, } /* Verify if IVT DCD pointer is NULL */ - if (ivt->dcd) - puts("Warning: DCD pointer should be NULL\n"); + if (ivt->dcd) { + puts("Error: DCD pointer must be NULL\n"); + goto hab_authentication_exit; + } start = ddr_start; bytes = image_size; |