fconf: Update dyn_config compatible string ...

Dynamic configuration properties are fconf properties. Modify the
compatible string from "arm,.." to "fconf,.." to reflect this.

Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
Change-Id: I85eb75cf877c5f4d3feea3936d4c348ca843bc6c

doc: Add binding document for fconf. ...

Complete the documentation with information on how to write a DTS for
fconf. This patch adds the bindings information for dynamic
configuration properties.

Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
Change-Id: Ic6d9f927df53bb87315c23ec5a8943d0c3258d45

plat/stm32: Implement fdt_read_uint32_default() as a wrapper ...

The STM32 platform code uses its own set of FDT helper functions,
although some of them are fairly generic.

Remove the implementation of fdt_read_uint32_default() and implement it
on top of the newly introduced fdt_read_uint32() function, then convert
all users over.

This also fixes two callers, which were slightly abusing the "default"
semantic.

Change-Id: I570533362b4846e58dd797a92347de3e0e5abb75
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

fdt/wrappers: Replace fdtw_read_cells() implementation ...

Our fdtw_read_cells() implementation goes to great lengths to
sanity-check every parameter and result, but leaves a big hole open:
The size of the storage the value pointer points at needs to match the
number of cells given. This can't be easily checked at compile time,
since we lose the size information by using a void pointer.
Regardless the current usage of this function is somewhat wrong anyways,
since we use it on single-element, fixed-length properties only, for
which the DT binding specifies the size.
Typically we use those functions dealing with a number of cells in DT
context to deal with *dynamically* sized properties, which depend on
other properties (#size-cells, #clock-cells, ...), to specify the number
of cells needed.

Another problem with the current implementation is the use of
ambiguously sized types (uintptr_t, size_t) together with a certain
expectation about their size. In general there is no relation between
the length of a DT property and the bitness of the code that parses the
DTB: AArch64 code could encounter 32-bit addresses (where the physical
address space is limited to 4GB [1]), while AArch32 code could read
64-bit sized properties (/memory nodes on LPAE systems, [2]).

To make this more clear, fix the potential issues and also align more
with other DT users (Linux and U-Boot), introduce functions to explicitly
read uint32 and uint64 properties. As the other DT consumers, we do this
based on the generic "read array" function.
Convert all users to use either of those two new functions, and make
sure we never use a pointer to anything other than uint32_t or uint64_t
variables directly.

This reveals (and fixes) a bug in plat_spmd_manifest.c, where we write
4 bytes into a uint16_t variable (passed via a void pointer).

Also we change the implementation of the function to better align with
other libfdt users, by using the right types (fdt32_t) and common
variable names (*prop, prop_names).

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi#n874
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/ecx-2000.dts

Change-Id: I718de960515117ac7a3331a1b177d2ec224a3890
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

plat/stm32: Use generic fdt_read_uint32_array() implementation ...

The device tree parsing code for the STM32 platform is using its own FDT
helper functions, some of them being rather generic.
In particular the existing fdt_read_uint32_array() implementation is now
almost identical to the new generic code in fdt_wrappers.c, so we can
remove the ST specific version and adjust the existing callers.

Compared to the original ST implementation the new version takes a
pointer to the DTB as the first argument, and also swaps the order of
the number of cells and the pointer.

Change-Id: Id06b0f1ba4db1ad1f733be40e82c34f46638551a
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

fdt/wrappers: Generalise fdtw_read_array() ...

Currently our fdtw_read_array() implementation requires the length of
the property to exactly match the requested size, which makes it less
flexible for parsing generic device trees.
Also the name is slightly misleading, since we treat the cells of the
array as 32 bit unsigned integers, performing the endianess conversion.

To fix those issues and align the code more with other DT users (Linux
kernel or U-Boot), rename the function to "fdt_read_uint32_array", and
relax the length check to only check if the property covers at least the
number of cells we request.
This also changes the variable names to be more in-line with other DT
users, and switches to the proper data types.

This makes this function more useful in later patches.

Change-Id: Id86f4f588ffcb5106d4476763ecdfe35a735fa6c
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

rcar_gen3: plat: Zero-terminate the string in unsigned_num_print() ...

Make sure the string generated in unsigned_num_print() is zero-terminated.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: Ic0ac1ebca255002522159a9152ab41991f043d05

Merge changes from topic "linker-script" into integration ...

* changes:
  linker_script: move .data section to bl_common.ld.h
  linker_script: move stacks section to bl_common.ld.h
  bl1: remove '.' from stacks section in linker script

linker_script: move .data section to bl_common.ld.h ...

Move the data section to the common header.

I slightly tweaked some scripts as follows:

[1] bl1.ld.S has ALIGN(16). I added DATA_ALIGN macro, which is 1
    by default, but overridden by bl1.ld.S. Currently, ALIGN(16)
    of the .data section is redundant because commit 412865907699
    ("Fix boot failures on some builds linked with ld.lld.") padded
    out the previous section to work around the issue of LLD version
    <= 10.0. This will be fixed in the future release of LLVM, so
    I am keeping the proper way to align LMA.

[2] bl1.ld.S and bl2_el3.ld.S define __DATA_RAM_{START,END}__ instead
    of __DATA_{START,END}__. I put them out of the .data section.

[3] SORT_BY_ALIGNMENT() is missing tsp.ld.S, sp_min.ld.S, and
    mediatek/mt6795/bl31.ld.S. This commit adds SORT_BY_ALIGNMENT()
    for all images, so the symbol order in those three will change,
    but I do not think it is a big deal.

Change-Id: I215bb23c319f045cd88e6f4e8ee2518c67f03692
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Fix build type is empty in version string ...

Signed-off-by: Peiyuan Song <squallatf@gmail.com>
Change-Id: I97c2e6f8c12ecf828605811019d47a24293c1ebb

linker_script: move stacks section to bl_common.ld.h ...

The stacks section is the same for all BL linker scripts.

Move it to the common header file.

Change-Id: Ibd253488667ab4f69702d56ff9e9929376704f6c
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

bl1: remove '.' from stacks section in linker script ...

Only BL1 specifies '.' in the address field of the stacks section.

Commit 4f59d8359f97 ("Make BL1 RO and RW base addresses configurable")
added '.' on purpose but the commit message does not help to understand
why.

This commit gets rid of it in order to factor out the stacks section
into include/common/bl_common.ld.h

I compared the build result for PLAT=qemu.

'aarch64-linux-gnu-nm -n build/qemu/release/bl1/bl1.elf' will change
as follows:

@@ -336,8 +336,8 @@
 000000000e04e0e0 d max_log_level
 000000000e04e0e4 D console_state
 000000000e04e0e5 D __DATA_RAM_END__
-000000000e04e0e5 B __STACKS_START__
 000000000e04e100 b platform_normal_stacks
+000000000e04e100 B __STACKS_START__
 000000000e04f100 b bl1_cpu_context
 000000000e04f100 B __BSS_START__
 000000000e04f100 B __STACKS_END__

After this change, __STACKS_START__ will match to platform_normal_stacks,
and I think it makes more sense.

'aarch64-linux-gnu-objdump -h build/qemu/release/bl1/bl1.elf' will change
as follows:

@@ -9,11 +9,11 @@
                   CONTENTS, ALLOC, LOAD, READONLY, DATA
   2 .data         000000e5  000000000e04e000  0000000000004a60  0001e000  2**4
                   CONTENTS, ALLOC, LOAD, DATA
-  3 stacks        0000101b  000000000e04e0e5  000000000e04e0e5  0001e0e5  2**6
+  3 stacks        00001000  000000000e04e100  0000000000004b45  0001e100  2**6
                   ALLOC
-  4 .bss          000007e0  000000000e04f100  000000000e04f100  0001e0e5  2**5
+  4 .bss          000007e0  000000000e04f100  0000000000004b50  0001f100  2**5
                   ALLOC
-  5 xlat_table    00006000  000000000e050000  000000000e050000  0001e0e5  2**12
+  5 xlat_table    00006000  000000000e050000  0000000000004b45  00020000  2**12
                   ALLOC
   6 coherent_ram  00000000  000000000e056000  000000000e056000  0001f000  2**12
                   CONTENTS

Sandrine pointed me to a useful document [1] to understand why LMAs of
stacks, .bss, and xlat_table section have changed.

Before this patch, they fell into this scenario:
 "If the section has a specific VMA address, then this is used as the
  LMA address as well."

With this commit, the following applies:
 "Otherwise if a memory region can be found that is compatible with the
  current section, and this region contains at least one section, then
  the LMA is set so the difference between the VMA and LMA is the same
  as the difference between the VMA and LMA of the last section in the
  located region."

Anyway, those three sections are not loaded, so the LMA changes will not
be a problem. The size of bl1.bin is still the same.

QEMU still boots successfully with this change.

A good thing is, this fixes the error for the latest LLD. If I use the
mainline LLVM, I see the following error. The alignment check will probably
be included in the LLVM 11 release, so it is better to fix it now.

$ PLAT=qemu CC=clang CROSS_COMPILE=aarch64-linux-gnu-
  [ snip ]
ld.lld: error: address (0xe04e0e5) of section stacks is not a multiple of alignment (64)
make: *** [Makefile:1050: build/qemu/release/bl1/bl1.elf] Error 1

[1]: https://sourceware.org/binutils/docs/ld/Output-Section-LMA.html#Output-Section-LMA

Change-Id: I3d2f3cc2858be8b3ce2eab3812a76d1e0b5f3a32
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Merge "Provide a hint to power controller for DSU cluster power down" into integration

Merge "board/rddanielxlr: add support for rd-daniel config-xlr platform" into integration

Merge "spm: Normalize the style of spm core manifest" into integration

spm: Normalize the style of spm core manifest ...

Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
Change-Id: Ib39e53eb53521b8651fb30b7bf0058f7669569d5

board/rddanielxlr: add support for rd-daniel config-xlr platform ...

RD-Daniel Config-XLR platform has four identical chips connected via a
high speed coherent CCIX link. Each chip has four Neoverse cores
connected via coherent CMN interconnect.

Change-Id: I37d1b91f2b6ba08f61c64d0288bc16a429836c08
Signed-off-by: Aditya Angadi <aditya.angadi@arm.com>

Merge "fdts: a5ds: Fix for the system timer issue." into integration

Merge "doc: Treat Sphinx warnings as errors" into integration

doc: Treat Sphinx warnings as errors ...

'make doc' will now fail if Sphinx outputs any warning messages during
documentation generation.

Change-Id: I3e466af58ccf29b14a7e61037539b79ab6fc6037
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

Merge "Incrementing the minor version to reflect upcoming v2.3 release" into integration

Incrementing the minor version to reflect upcoming v2.3 release ...

Change-Id: I27f7d92988fc16f68041c2ddaa8dd3a60362ddd1
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>

fdts: a5ds: Fix for the system timer issue. ...

A5DS FPGA system timer clock frequency is 7.5Mhz.
The dt is file updated inline with the hardware
clock frequency.

Change-Id: I3f6c2e0d4a7b293175a42cf398a8730448504af9
Signed-off-by: lakshmi Kailasanathan <lakshmi.Kailasanathan@arm.com>

Merge "juno/sgm: Align SCP_BL2 to page boundary" into integration

Merge "doc: Fixup some SMCCC links" into integration

juno/sgm: Align SCP_BL2 to page boundary ...

This commit fixes an assertion that was triggering in certain contexts:

    ERROR: mmap_add_region_check() failed. error -22
    ASSERT: lib/xlat_tables_v2/xlat_tables_core.c:790

Change-Id: Ia55b3fb4f496c8cd791ea6093d122edae0a7e92a
Signed-off-by: Chris Kay <chris.kay@arm.com>
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

doc: Fixup some SMCCC links ...

This is a fixup for patch 3ba55a3
("docs: Update SMCCC doc, other changes for release"), where some
links names got changed but their references didn't.

Change-Id: I980d04dde338f3539a2ec1ae2e807440587b1cf5
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

Merge "doc: Set fconf as experimental feature" into integration

Merge "docs: Update SMCCC doc, other changes for release" into integration

Merge "docs: Updating Change log for v2.3 Release" into integration