Commit graph

5 commits

Author SHA1 Message Date
Patrick Delaunay
815bc8bc94 stm32mp1: bsec: shadow all the upper OTP (no secure) during boot
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-04-12 16:09:13 +02:00
Patrick Delaunay
bfe1f08f88 stm32mp1: bsec: use device tree new compatible
Update bsec driver to use the device tree provided by Kernel.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-04-12 16:09:13 +02:00
Patrick Delaunay
d859c61139 stm32mp1: bsec: access with SMC for trusted boot
As BSEC is secure aware, all register access need to be done
by TF-A for TRUSTED boot chain, when U-Boot is executed in
normal world.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-04-12 16:09:13 +02:00
Bin Meng
4854ebc57e arm: stm32mp: Remove DM_FLAG_PRE_RELOC flag
When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be
bound before relocation. However due to a bug in the DM core,
the flag only takes effect when devices are statically declared
via U_BOOT_DEVICE(). This bug has been fixed recently by commit
"dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in
lists_bind_fdt()", but with the fix, it has a side effect that
all existing drivers that declared DM_FLAG_PRE_RELOC flag will
be bound before relocation now. This may expose potential boot
failure on some boards due to insufficient memory during the
pre-relocation stage.

To mitigate this potential impact, the following changes are
implemented:

- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver
  only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device
  is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for
  drivers that support both statically declared devices and
  configuration from device tree

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-11-14 09:16:28 -08:00
Patrick Delaunay
19f589923a stm32mp1: add bsec driver
Add a MISC driver with read and write access to BSEC IP
(Boot and Security and OTP control)
- offset 0: shadowed values
- offset 0x80000000: OTP fuse box values (SAFMEM)

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-05-26 18:19:18 -04:00