When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
To debug device tree issues involving 32- and 64-bit platforms, it is useful to
have a generic 64-bit platform available.
Add a version of the sandbox that uses 64-bit integers for its physical
addresses as well as a modified device tree.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Added CONFIG_SYS_TEXT_BASE to configs/sandbox64_defconfig
Signed-off-by: Simon Glass <sjg@chromium.org>
This driver is no longer used on any supported platform in U-Boot and
there is no interest in maintaining it further from people that have
used it historically.
Cc: Simon Glass <sjg@chromium.org>
Cc: Michal Simek <michal.simek@xilinx.com>
c: Alexey Brodkin <alexey.brodkin@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
The setbits/clrbits/clrsetbits macros are used widely across the tree,
let's provide implementation for them in the sandbox.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Convert the sandbox architecture to make use of the new asm-generic/io.h
to provide address mapping functions. As sandbox actually performs
non-identity mapping between physical & virtual addresses we can't
simply make use of the generic mapping functions, but are able to
implement phys_to_virt() & make use of it from map_physmem().
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
At present these functions do not touch addr, which can raising warnings
about unused variables.
This fixes the following warnings:
sandbox_spl defconfig
drivers/core/regmap.c: In function ‘regmap_read’:
drivers/core/regmap.c:125:12: warning: unused variable ‘ptr’ [-Wunused-variable]
uint32_t *ptr = map_physmem(map->base + offset, 4, MAP_NOCACHE);
^
drivers/core/regmap.c: In function ‘regmap_write’:
drivers/core/regmap.c:134:12: warning: unused variable ‘ptr’ [-Wunused-variable]
uint32_t *ptr = map_physmem(map->base + offset, 4, MAP_NOCACHE);
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 3bfb8cb4 (dm: regmap: Implement simple regmap_read & regmap_write)
Add outsw() and insw() functions for sandbox, as these are needed by the IDE
code. The functions will not do anything useful if called, but allow the
code to be compiled.
Also add out16() and in16(), required by systemace.
Signed-off-by: Simon Glass <sjg@chromium.org>
- Set CONFIG_SYS_CACHELINE_SIZE to ARCH_DMA_MINALIGN as that should be
good enough.
- Make <asm/io.h> include <asm/types.h> like other arches do
- Enable many many more drivers in sandbox_defconfig so that we can get
more build-time testing on this platform.
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add the required header information, device tree nodes and I/O accessor
functions to support PCI on sandbox. All devices are emulated by drivers
which can be added as required for testing or development.
Signed-off-by: Simon Glass <sjg@chromium.org>
Very often a constant pointer is passed to this function, so we should
declare this, since map_to_sysmem() does not change the pointer.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add generic board support for sandbox. and remove the old board init code.
Select CONFIG_SYS_GENERIC_BOARD for sandbox now that this is supported.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>
In many cases, pointers to memory are passed around, and these pointers
refer to U-Boot memory, not host memory. This in itself is not a
problem.
However, in a few places, we cast that pointer back to a ulong (being
a U-Boot memory address). It is possible to convert many of these cases
to avoid this. However there are data structures (e.g. struct
bootm_headers) which use pointers. We could with a lot of effort adjust
the structs and all code that uses them to use ulong instead of pointers.
This seems like an unacceptable cost, since our objective with sandbox
is to minimise the impact on U-Boot code while maximising the features
available to sandbox.
Therefore, create a map_to_sysmem() function which converts from a
pointer to a U-Boot address. This can be used sparingly when needed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Sandbox doesn't actually provide U-Boot access to the machine's physical
memory. Instead it provides a RAM buffer of configurable size, and all
memory accesses are within that buffer. Sandbox memory starts at 0 and
is CONFIG_DRAM_SIZE bytes in size. Allowing access outside this buffer
might produce unpredictable results in the event of an error, and would
expose the host machine's memory architecture to the sandbox U-Boot.
Most U-Boot functions assume that they can just access memory at given
address. For sandbox this is not true.
Add a map_sysmem() call which converts a U-Boot address to a system
address. In most cases this is a NOP, but for sandbox it returns a
pointer to that memory inside the RAM buffer.
To get a U-Boot feature to work correctly within sandbox, you should call
map_sysmem() to get a pointer to the address, and then use that address for
any U-Boot memory accesses.
Signed-off-by: Simon Glass <sjg@chromium.org>
This adds required header files for the sandbox architecture, and a basic
description of what sandbox is (README.sandbox).
Signed-off-by: Simon Glass <sjg@chromium.org>
