From mboxrd@z Thu Jan  1 00:00:00 1970
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Thu, 25 Jun 2020 16:36:45 +0200
Subject: [PATCH v3 0/6] crypto/fsl: add RNG support
In-Reply-To: <20200625121905.4475-1-michael@walle.cc>
References: <20200625121905.4475-1-michael@walle.cc>
Message-ID: <98665946-466d-a7ab-8818-73b3889f0c18@gmx.de>
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To: u-boot@lists.denx.de

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