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>
The commit 3f70a6f577 ("x86: Add clr/setbits functions")
introduced the {read|write}_ macros to manipulate data.
Those macros are not used by any code in the u-boot project (despite the
io.h itself). Other architectures use io.h with {in|out}_* macros.
This commit brings some unification across u-boot supported architectures.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Add readq() and writeq() definitions for x86.
Please note: in 32-bit code readq/writeq will generate two 32-bit
memory access instructions instead of one atomic 64-bit operation.
Signed-off-by: Ivan Gorinov <ivan.gorinov@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Convert the x86 architecture to make use of the new asm-generic/io.h to
provide address mapping functions. As the generic implementations are
suitable for x86 this is primarily a matter of moving code.
This has only been build-tested, feedback from architecture maintainers
is welcome.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Neither new design uses ISA bus, nor does any U-Boot codes use these
codes. Remove them.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
It is common with memory-mapped I/O to use the address of a structure member
to access memory, as in:
struct some_regs {
u32 ctrl;
u32 data;
}
struct some_regs *regs = (struct some_regs *)BASE_ADDRESS;
writel(1, ®->ctrl);
writel(2, ®->data);
This does not currently work with inl(), outl(), etc. Add a cast to permit
this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
The clrsetbits_...() macros are useful for working with memory mapped I/O.
But they do not work with I/O space, as used on x86 machines.
Add some macros to provide similar features for I/O.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
These types should be 64 bits long to reflect the fact that physical
addresses and the size of physical areas of memory are more than 32 bits
long.
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This patch prevents u-boot from "spamming" random progress codes on
a port 80 "post card".
The previous version of this patch just removed the delays in the "slow"
IO functions, as they do not need to be slow, however, this patch is
less intrusive.
It uses another unused port that is often used by BIOSes (and the Linux
Kernel) for small delay timing purposes.
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
The i386 version of io.h depends on the phys_addr_t type which is defined in
types.h. It wasn't including that explicitly, and was working presumably
because the other files including it had already included types.h themselves
directly or indirectly. This change fixes that.
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This helps to clean up the include/ directory so that it only contains
non-architecture-specific headers and also matches Linux's directory
layout which many U-Boot developers are already familiar with.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
virt_to_phys() returns the physical address given a virtual. In most
cases this will be just the input value as the vast majority of
systems run in a 1:1 mode.
However in systems that are not running this way it should report the
physical address or ~0 if no mapping exists for the given virtual
address.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Also add CONFIG_PHYS_64BIT on powerpc to deal with 32-bit ppc's
that have larger physical addresses like 44x, 85xx, and 86xx.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
map_physmem() returns a virtual address which can be used to access a
given physical address without involving the cache. unmap_physmem()
should be called when the virtual address returned by map_physmem() is
no longer needed.
This patch adds a stub implementation which simply returns the
physical address cast to a uchar * for all architectures except AVR32,
which converts the physical address to an uncached virtual mapping.
unmap_physmem() is a no-op on all architectures, but if any
architecture needs to do such mappings through the TLB, this is the
hook where those TLB entries can be invalidated.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Some CPUs like PPC, BLACKFIN need sync() to ensure cfi flash write command
is fully finished. The sync() is defined in each CPU's io.h file. For
those CPUs which do not need sync for now, a dummy sync() is defined in
their io.h as well.
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
Fixed rarp boot method for IA32 and other little-endian CPUs.
* Patch by Marc Singer, 28 May 2003:
Added port I/O commands.
* Patch by Matthew McClintock, 28 May 2003
- cpu/mpc824x/start.S: fix relocation code when booting from RAM
- minor patches for utx8245
* Patch by Daniel Engström, 28 May 2003:
x86 update
* Patch by Dave Ellis, 9 May 2003 + 27 May 2003:
add nand flash support to SXNI855T configuration
fix/extend nand flash support:
- fix 'nand erase' command so does not erase bad blocks
- fix 'nand write' command so does not write to bad blocks
- fix nand_probe() so handles no flash detected properly
- add doc/README.nand
- add .jffs2 and .oob options to nand read/write
- add 'nand bad' command to list bad blocks
- add 'clean' option to 'nand erase' to write JFFS2 clean markers
- make NAND read/write faster
* Patch by Rune Torgersen, 23 May 2003:
Update for MPC8266ADS board
Add support for i386 architecture and AMD SC520 board
* Patch by Pierre Aubert, 12 Nov 2002:
Add support for DOS filesystem and booting from DOS floppy disk
Tom Rini
Lukasz Majewski
Ivan Gorinov
Paul Burton
Bin Meng
Simon Glass
Masahiro Yamada
Gabe Black
Stefan Reinauer
Graeme Russ
Peter Tyser
Kumar Gala
Haavard Skinnemoen
Haiying Wang
wdenk