[PATCH v3 0/6] crypto/fsl: add RNG support

[Heinrich Schuchardt]

On 25.06.20 14:18, Michael Walle wrote:
> First, improve the compatibility on newer Era CAAMs. These introduced new
> version registers. Secondly, add RNG support for the CAAM. This way we get
> random number generator support for EFI for free and KASLR will work with
> ARM64 kernels booted with bootefi.
>

It seems that a Kconfig dependency at least on CONFIG_SYS_FSL_HAS_SEC
which itself depends on CONFIG_IMX_HAB is missing:

wandboard_defconfig + FSL_CAAM + DM_RNG gives me a bunch of errors

drivers/crypto/fsl/jr.c: In function ‘start_jr0’:
drivers/crypto/fsl/jr.c:47:2: error: unknown type name ‘ccsr_sec_t’; did
you mean ‘pci_dev_t’?
  ccsr_sec_t *sec = (void *)SEC_ADDR(sec_idx);
  ^~~~~~~~~~
  pci_dev_t
In file included from ./arch/arm/include/asm/byteorder.h:29,
                 from include/linux/libfdt_env.h:15,
                 from include/linux/libfdt.h:6,
                 from include/fdtdec.h:17,
                 from include/asm-generic/global_data.h:23,
                 from ./arch/arm/include/asm/global_data.h:87,
                 from include/common.h:26,
                 from drivers/crypto/fsl/jr.c:8:
drivers/crypto/fsl/jr.c:48:29: error: request for member ‘ctpr_ms’ in
something not a structure or union
  u32 ctpr_ms = sec_in32(&sec->ctpr_ms);
                             ^~

But if I enable IMX_HAB booting fails with: "hab fuse not enabled".

Why should I need to enable the HAB fuse to use the random number
generator on the i.MX6?

Best regards

Heinrich