Commit graph

312 commits

Author SHA1 Message Date
Tom Rini
11232139e3 nds32: Remove the architecture
As removal of nds32 has been ack'd for the Linux kernel, remove support
here as well.

Cc: Rick Chen <rick@andestech.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Rick Chen <rick@andestech.com>
2022-04-25 16:04:05 -04:00
Andrew Abbott
0de71bb580 fdt: Fix TPL SEPARATE_BSS check when locating DTB
Commit 690af71850 changed this condition
from an explicit

IS_ENABLED(CONFIG_SPL_SEPARATE_BSS)

to

CONFIG_IS_ENABLED(SEPARATE_BSS)

The documentation for CONFIG_IS_ENABLED() in include/linux/kconfig.h
implies that we will get the correct behaviour, but the actual behaviour
differs such that this condition is now always false.

This stopped TPL being able to load the device tree blob at least on the
ROCKPro64 board (RK3399 SoC), since the wrong device tree location was
chosen.

The issues causing this behaviour with CONFIG_IS_ENABLED() are:

1. The documentation implies that CONFIG_SPL_BUILD =>
   CONFIG_SPL_<option> is considered before the TPL equivalent.

   Actually, the TPL options have higher priority - see definition of
   _CONFIG_PREFIX.

2. The documentation implies a fallthrough, eg. if CONFIG_SPL_BUILD is
   defined but the CONFIG_SPL_<option> is not, then it will proceed to
   check if CONFIG_TPL_BUILD

   Actually, if CONFIG_TPL_BUILD is defined, then it stops there
   and CONFIG_SPL_BUILD is not considered - see definition of
   _CONFIG_PREFIX.

   During TPL build, at least for the ROCKPro64, both CONFIG_TPL_BUILD
   and CONFIG_SPL_BUILD are defined, but because of the above, only TPL
   options are considered. Since there is no CONFIG_TPL_SEPARATE_BSS,
   this fails.

Fixes: 690af71850 ("fdt: Correct condition for SEPARATE_BSS")
Signed-off-by: Andrew Abbott <andrew@mirx.dev>
2022-04-22 15:44:10 -04:00
Simon Glass
423cf0acda fdt: sandbox: Avoid looking for an appended device tree
We don't use an appended tree for sandbox and the required symbols are
not present. Add a condition to avoid a build error.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-04-06 14:01:42 -04:00
Simon Glass
690af71850 fdt: Correct condition for SEPARATE_BSS
This may have different settings for SPL and TPL. Correct the condition.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-04-06 14:01:42 -04:00
Heinrich Schuchardt
185f812c41 doc: replace @return by Return:
Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2022-01-19 18:11:34 +01:00
Simon Glass
275b4832f6 fdt: Add a Kconfig for boards with a prior stage
When U-Boot is started from another firmware program, not just a prior
phase of U-Boot, special behaviour is typically used. In particular, the
device tree may come from that prior stage.

At present this is sort-of indicated by OF_BOARD, although the
correlation is not 1:1, since that option simply means that the board has
a custom mechanism for obtaining the device tree. For example, sandbox
defines OF_BOARD. Also the board_fdt_blob_setup() function can in fact
make use of the devicetree in U-Boot if it wishes, as used by
dragonboard410c until very recently.

Add an explicit Kconfig for this situation. Update the OF_BOARD option to
more-accurately reflect what it is doing, e.g. for sandbox.

Drop the docs in the README as it is out of date.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:40 -05:00
Simon Glass
ff66e7bb73 fdt: Report the devicetree source
It can be confusing to figure out where the devicetree came from. It seems
important enough to warrant a message during boot. Add information about
the number of devices and uclasses too since it is helpful to have some
idea what is going on with driver model.

Report the devicetree source in bdinfo too.

This looks something like this, with > marking the new line.

   U-Boot 2021.10-00190 (Oct 30 2021 - 09:01:29 -0600)

   DRAM:  128 MiB
>  Core:  42 devices, 11 uclasses, devicetree: passage
   Flash: 64 MiB

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:40 -05:00
Simon Glass
39605c6ec3 fdt: Record where the devicetree came from
Keep track of where the devicetree came from, so we can report this later.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:40 -05:00
Simon Glass
9855034397 fdt: Don't call board_fdt_blob_setup() without OF_BOARD
At present this override function is called even when OF_BOARD is not
enabled. This makes it impossible to disable this feature and in fact
makes the OF_BOARD option useless.

Reinstate its intended purpose, so that it is possible to switch between
the appended devicetree and one provided by the board's custom function.

A follower patch adds warnings for this scenario, but for now we don't
have a Kconfig that definitively tells us that OF_BOARD should be used.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:40 -05:00
Simon Glass
ba83d8593b fdt: Drop remaining preprocessor macros in fdtdec_setup()
We only have two choices for obtaining the devicetree. Simplify the code
to make that clear.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:40 -05:00
Simon Glass
b5199380fc fdt: Drop OF_CONTROL check in fdtdec_setup()
This function should only be called when OF_CONTROL is enabled. It
fails in fdtdec_prepare_fdt() anyway, since gd->fdt_blob stays as NULL
if OF_CONTROL is not enabled.

Drop this useless check.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
931511d089 fdt: Use if() for fdtcontroladdr check
Change this to use if() instead of #if

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
66cd511f13 fdt: Drop #ifdef around board_fdt_blob_setup()
This serves no purpose. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
d893b8ad09 fdt: Drop CONFIG_SPL_BUILD check in fdtdec_setup()
Move this to the header file to clean up the C code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
b4b6daf38d fdt: Drop #ifdefs with MULTI_DTB_FIT
Refactor the code to drop the #ifdefs for this feature.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
3f51f78cbd fdt: Move MULTI_DTB_FIT handling out of fdtdec_setup()
This logic is a bit convoluted for one function. Move the mulit-FIT part
into its own function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-12-23 10:24:39 -05:00
Ilias Apalodimas
e7fb789612 sandbox: Remove OF_HOSTFILE
OF_HOSTFILE is used on sandbox configs only.  Although it's pretty
unique and not causing any confusions,  we are better of having simpler
config options for the DTB.

So let's replace that with the existing OF_BOARD.  U-Boot would then
have only three config options for the DTB origin.
- OF_SEPARATE, build separately from U-Boot
- OF_BOARD, board specific way of providing the DTB
- OF_EMBED embedded in the u-boot binary(should not be used in production

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-10-27 16:38:26 -04:00
Ilias Apalodimas
d6f8ab30a2 treewide: Remove OF_PRIOR_STAGE
The previous patches removed OF_PRIOR_STAGE from the last consumers of the
Kconfig option.  Cleanup any references to it in documentation,  code and
configuration options.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-10-18 13:19:50 -04:00
Thierry Reding
b9aad37591 fdtdec: Support reserved-memory flags
Reserved memory nodes can have additional flags. Support reading and
writing these flags to ensure that reserved memory nodes can be properly
parsed and emitted.

This converts support for the existing "no-map" flag to avoid extending
the argument list for fdtdec_add_reserved_memory() to excessive length.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2021-10-13 14:18:30 -07:00
Thierry Reding
9019487608 fdtdec: Reorder fdtdec_set_carveout() parameters for consistency
The fdtdec_set_carveout() function's parameters are inconsistent with
the parameters passed to fdtdec_add_reserved_memory(). Fix up the order
to make it more consistent.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2021-10-13 14:18:30 -07:00
Thierry Reding
46cb067803 fdtdec: Support compatible string list for reserved memory
Reserved memory nodes can have a compatible string list to identify the
type of reserved memory that they represent. Support specifying an
optional compatible string list when creating these nodes.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2021-10-13 14:18:30 -07:00
Thierry Reding
4bf88ba76a fdtdec: Support retrieving the name of a carveout
When retrieving a given carveout for a device, allow callers to query
the name. This helps differentiating between carveouts when there are
more than one.

This is also useful when copying carveouts to help assign a meaningful
name that cannot always be guessed.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2021-10-13 14:18:30 -07:00
Thierry Reding
d5598cfa9b fdtdec: Allow using fdtdec_get_carveout() in loops
In order make it possible to use fdtdec_get_carveout() in loops, return
FDT_ERR_NOTFOUND when the passed-in index exceeds the number of phandles
present in the given property.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2021-10-13 14:18:30 -07:00
Simon Glass
7de8bd03c3 treewide: fdt: Move fdt_get_config_... to ofnode_conf_read...
The current API is outdated as it requires a devicetree pointer.

Move these functions to use the ofnode API and update this globally. Add
some tests while we are here.

Correct the call in exynos_dsim_config_parse_dt() which is obviously
wrong.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-09-25 09:46:15 -06:00
Simon Glass
b717f2f2d1 pci: Drop DM_PCI check from fdtdec
We don't need this check anymore since when PCI is enabled, driver model
is always used.

Sadly this doesn't work with nds32 for some reason to do with the
toolchain. Add a work-around for that.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-09-13 18:23:13 -04:00
Tom Rini
b91c704333 Merge https://source.denx.de/u-boot/custodians/u-boot-samsung 2021-08-03 09:07:01 -04:00
Simon Glass
0b1284eb52 global: Convert simple_strtoul() with decimal to dectoul()
It is a pain to have to specify the value 10 in each call. Add a new
dectoul() function and update the code to use it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-02 13:32:14 -04:00
Simon Glass
5e19f4aa13 samsung: exynos: Convert SROMC interface to a driver
Add a bus driver for this and use it to configure the bus parameters for
the Ethernet interface. Drop the old pre-driver-model code.

Switch over to use driver model for Ethernet.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2021-07-27 10:34:27 +09:00
Patrick Delaunay
feb7ac457c dm: core: Add address translation in fdt_get_resource
Today of_address_to_resource() is called only in
ofnode_read_resource() for livetree support and
fdt_get_resource() is called when livetree is not supported.

The fdt_get_resource() doesn't do the address translation
so when it is required, but the address translation is done
by ofnode_read_resource() caller, for example in
drivers/firmware/scmi/smt.c::scmi_dt_get_smt_buffer() {
...
	ret = ofnode_read_resource(args.node, 0, &resource);
	if (ret)
		return ret;

	faddr = cpu_to_fdt32(resource.start);
	paddr = ofnode_translate_address(args.node, &faddr);
...

The both behavior should be aligned and the address translation
must be called in fdt_get_resource() and removed for each caller.

Fixes: a44810123f ("dm: core: Add dev_read_resource() to read device resources")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-04-29 03:23:39 -07:00
Tom Rini
2ae80437fb Merge branch '2021-02-02-drop-asm_global_data-when-unused'
- Merge the patch to take <asm/global_data.h> out of <common.h>
2021-02-15 10:16:45 -05:00
Tom Rini
e31350c3c4 Revert "fdtdec: Use CONFIG_IS_ENABLED in board_fdt_blob_setup()"
On Rockchip platforms we need this area of code in TPL, but there is no
TPL_SEPARATE_BSS symbol.

This reverts commit 0a2aaab0b6.

Reported-by: Markus Reichl <m.reichl@fivetechno.de>
Reported-by: Jesper Schmitz Mouridsen <jesper@schmitz.computer>
Reported-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-02-15 10:06:23 -05:00
Bin Meng
d17e9d2558 fdtdec: Cast prior_stage_fdt_address with uintptr_t
At present prior_stage_fdt_address is declared as phys_addr_t. On
a 32-bit platform where phys_addr_t can be 64-bit, assigning its
value to gd->fdt_blob which is a pointer, can cause warnings.

Cast it to uintptr_t before the assignment.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-02-03 03:38:41 -07:00
Simon Glass
401d1c4f5d common: Drop asm/global_data.h from common header
Move this out of the common header and include it only where needed.  In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly.   Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-02-02 15:33:42 -05:00
Simon Glass
0a2aaab0b6 fdtdec: Use CONFIG_IS_ENABLED in board_fdt_blob_setup()
This setting may be different in SPL and TPL. Update the code to check
the correct setting.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-01-27 17:03:16 -05:00
Simon Glass
e1d23f569b fdtdec: Update the missing-devicetree message
This includes information about sandbox which is not relevant for most
boards. Drop it.

Also add the address to help figure out the problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-01-27 17:03:16 -05:00
Aswath Govindraju
c589132a1d fdt: Use phandle to distinguish DT nodes with same name
While assigning the sequence number to subsystem instances by reading the
aliases property, only DT nodes names are compared and not the complete
path. This causes a problem when there are two DT nodes with same name but
have different paths.

In arch/arm/dts/k3-am65-main.dtsi there are two USB controllers with the
same device tree node name but different path. When aliases are defined for
these USB controllers then fdtdec_get_alias_seq() fails to pick the correct
instance for a given index.

fdt_path_offset() function is slow and this would effect the U-Boot
startup. To avert the time penalty on all boards, apply this extra check
only when required by using a config option.

Fix it by comparing the phandles of DT nodes after the node names match,
under a config option.

Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Fix whitespace error in Kconfig:
Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-22 20:39:25 -07:00
Patrick Delaunay
cba487c7fc fdtdec: correct test on return of fdt_node_offset_by_phandle
The result of fdt_node_offset_by_phandle is negative for error,
so this patch corrects the check of this result in
fdtdec_parse_phandle_with_args.

This patch allows to have the same behavior with or without OF_LIVE
for the function dev_read_phandle_with_args with cell_name = NULL and
with invalid phandle.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-10-06 09:07:54 -06:00
Etienne Carriere
ccaa5747bd fdtdec: optionally add property no-map to created reserved memory node
Add boolean input argument @no_map to helper function
fdtdec_add_reserved_memory() to add or not "no-map" property
for an added reserved memory node.

Property no-map is used by the Linux kernel to not not map memory
in its static memory mapping. It is needed for example for the|
consistency of system non-cached memory and to prevent speculative
accesses to some firewalled memory.

No functional change. A later change will update to OPTEE library to
add no-map property to OP-TEE reserved memory nodes.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-22 12:54:13 -06:00
Tom Rini
751b18b8a1 Merge branch 'master' into next
Merge in v2020.10-rc5
2020-09-21 14:25:37 -04:00
Marek Vasut
81d0cef3b2 lib: fdt: Fix fdtdec_setup_mem..() conversion to livetree API
Repair incorrectly negated condition in the original patch which broke
DT memory node parsing on everything which has more than one DT memory
node, e.g. R-Car3.

In case multiple valid memory nodes are present in the DT, the original
patch would complete parsing cycle for the first memory node, then move
on to the next one, identify it as a valid, and end the parsing. The fix
is to invert the condition, to make the code behave as it did before the
livetree conversion, so it would continue parsing the subsequent memory
nodes as well.

Fixes: c2f0950c33 ("lib: fdt: Convert fdtdes_setup_mem..() to livetree API")
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Tested-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
2020-09-16 16:54:00 -04:00
Stefan Roese
dfaf6a5797 CONFIG_NR_DRAM_BANKS: Remove unreferenced code as its always defined
Since commit 86cf1c8285 ("configs: Migrate CONFIG_NR_DRAM_BANKS") &
commit 999a772d9f ("Kconfig: Migrate CONFIG_NR_DRAM_BANKS"),
CONFIG_NR_DRAM_BANKS is always defined with a value (4 is default).
It makes no sense to still carry code that is guarded with
"#ifndef CONFIG_NR_DRAM_BANKS" (and similar). This patch removes
all these unreferenced code paths.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-08-26 09:19:16 +02:00
Suneel Garapati
1db7ee464f fdtdec: Add API to read pci bus-range property
Add fdtdec_get_pci_bus_range to read bus-range property
values.

Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-08-25 05:41:09 +02:00
Michal Simek
c2f0950c33 lib: fdt: Convert fdtdes_setup_mem..() to livetree API
Convert fdtdec_setup_mem_size_base(), get_next_memory_node(),
fdtdec_setup_memory_banksize() and fdtdec_setup_mem_size_base_lowest() to
livetree API.

Tested on ZynqMP zcu104 board.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-08-20 09:49:20 +02:00
Michal Simek
7fce739665 lib: fdt: Introduce fdtdec_setup_mem_size_base_lowest()
New function should be called from board dram_init() because it initialized
gd->ram_base/ram_size. It finds the lowest available memory.

On systems with multiple memory nodes finding out the first memory node by
fdtdec_setup_mem_size_base() is not enough because this memory can be above
actual U-Boot VA mapping. Currently only mapping till 39bit is supported
(Full 44bit mapping was removed by commit 7985cdf74b ("arm64: Remove
non-full-va map code")).
If DT starts with the first memory node above 39bit address then system can
be unpredictable.

The function is available only when multiple memory bank support is
enabled.

Calling fdtdec_setup_memory_banksize() from dram_init() is not possible
because fdtdec_setup_memory_banksize() is saving dram information to bd
structure which is placed on stack but not initialized at this time. Also
stack is placed at location setup in dram_init().

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-08-20 09:49:20 +02:00
Michal Simek
50c7b723bd Revert "lib: fdt: Split fdtdec_setup_mem_size_base()"
This reverts commit 3ebe09d09a.

There is no user of this split function that's why remove it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-07-25 14:46:57 -06:00
Michal Simek
62897c4344 Revert "lib: fdt: Split fdtdec_setup_memory_banksize()"
This reverts commit 118f4d4559.

There is no user of this split function that's why remove it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-07-25 14:46:57 -06:00
Tom Rini
7208396bbf Revert "Merge tag 'dm-pull-20jul20' of git://git.denx.de/u-boot-dm"
This reverts commit 5d3a21df66, reversing
changes made to 56d37f1c56.

Unfortunately this is causing CI failures:
https://travis-ci.org/github/trini/u-boot/jobs/711313649

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-07-24 08:42:06 -04:00
Michal Simek
b589b80971 Revert "lib: fdt: Split fdtdec_setup_mem_size_base()"
This reverts commit 3ebe09d09a.

There is no user of this split function that's why remove it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-07-20 11:37:47 -06:00
Michal Simek
d4cc6f638c Revert "lib: fdt: Split fdtdec_setup_memory_banksize()"
This reverts commit 118f4d4559.

There is no user of this split function that's why remove it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-07-20 11:37:47 -06:00
Masahiro Yamada
b75d8dc564 treewide: convert bd_t to struct bd_info by coccinelle
The Linux coding style guide (Documentation/process/coding-style.rst)
clearly says:

  It's a **mistake** to use typedef for structures and pointers.

Besides, using typedef for structures is annoying when you try to make
headers self-contained.

Let's say you have the following function declaration in a header:

  void foo(bd_t *bd);

This is not self-contained since bd_t is not defined.

To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h>

  #include <asm/u-boot.h>
  void foo(bd_t *bd);

Then, the include direcective pulls in more bloat needlessly.

If you use 'struct bd_info' instead, it is enough to put a forward
declaration as follows:

  struct bd_info;
  void foo(struct bd_info *bd);

Right, typedef'ing bd_t is a mistake.

I used coccinelle to generate this commit.

The semantic patch that makes this change is as follows:

  <smpl>
  @@
  typedef bd_t;
  @@
  -bd_t
  +struct bd_info
  </smpl>

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-07-17 09:30:13 -04:00