The call to FspInitEntry is done in arch/x86/lib/fsp/fsp_car.S so far.
It worked pretty well but looks not that good. Apart from doing too
much work than just enabling CAR, it cannot read the configuration
data from device tree at that time. Now we want to move it a little
bit later as part of init_sequence_f[] being called by board_init_f().
This way it looks and works better in the U-Boot initialization path.
Due to FSP's design, after calling FspInitEntry it will not return to
its caller, instead it jumps to a continuation function which is given
by bootloader with a new stack in system memory. The original stack in
the CAR is gone, but its content is perserved by FSP and described by
a bootloader temporary memory HOB. Technically we can recover anything
we had before in the previous stack, but that is way too complicated.
To make life much easier, in the FSP continuation routine we just
simply call fsp_init_done() and jump back to car_init_ret() to redo
the whole board_init_f() initialization, but this time with a non-zero
HOB list pointer saved in U-Boot's global data so that we can bypass
the FspInitEntry for the second time.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Andrew Bradford <andrew.bradford@kodakalaris.com>
Tested-by: Simon Glass <sjg@chromium.org>
There is little reason to split these two functions. Bring them together
which simplifies the init sequence.
Signed-off-by: Simon Glass <sjg@chromium.org>
In the case where the arch defines a custom map_sysmem(), make sure that
including just mapmem.h is sufficient to have these functions as they
are when the arch does not override it.
Also split the non-arch specific functions out of common.h
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Since driver model is set up after arch_cpu_init(), that function cannot
use drivers. Add a new arch_cpu_init_dm() function which is called
immediately after driver model is ready, and can reference devices.
This can be used to probe essential devices for the CPU.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Intention behind this work was elimination of as much assembly-written
code as it is possible.
In case of ARC we already have relocation fix-up implemented in C so why
don't we use C for U-Boot copying, .bss zeroing etc.
It turned out x86 uses pretty similar approach so we re-used parts of
code in "board_f.c" initially implemented for x86.
Now assembly usage during init is limited to stack- and frame-pointer
setup before and after relocation.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Simon Glass <sjg@chromium.org>
Fix eb_cpu5282 and eb_cpu5282_internal unresolved external error.
These boards have video but don't need any ppc related
video_setmem().
Fix M53017EVB moving away embedded env to a different offset,
as in M52277EVB.
Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Purpose of this change is to make it possible to re-use code currently
used on X86 solely for other architectures. For example:
* init_sequence_f_r
* board_init_f_r
Even though board_init_f_mem() has nothing to do with any particular
architecture it won't work (at least in current implementation) for X86.
This is because on X86 "gd" is an alias to function get_fs_gd_ptr(),
thus we cannot assign anything to it.
So this change separates selection of board_init_f_mem() from X86 while
keeping it disabled for X86 still.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Without this patch, the IMX watchdog will not be initialized. And therefor
not active. This patch fixes this by calling hw_watchdog_init() also when
CONFIG_IMX_WATCHDOG is defined.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
In case of global data structure defined as "register volatile" compiler
throws an warning about incorrect type used:
--->8---
common/board_f.c: In function "board_init_f_r":
common/board_f.c:1073:2: warning: passing argument 1 of "&board_init_r
+(sizetype)gd->reloc_off" discards "volatile" qualifier from pointer
target type [enabled by default]
(board_init_r + gd->reloc_off)(gd, gd->relocaddr);
^
common/board_f.c:1073:2: note: expected "struct gd_t *" but argument is
of type "volatile struct gd_t *"
--->8---
An obvious fix is manual casting to "gd_t *".
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
This patch adds generic board support for MCF547X/8X and MCF5445X.
It is based on the patch about common generic board support for
M68K architecture sent by Angelo.
Signed-off-by: Alison Wang <alison.wang@freescale.com>
Some systems have so much RAM that the end of RAM is beyond 4GB. An
example would be a Tegra124 system (where RAM starts at 2GB physical)
that has more than 2GB of RAM.
In this case, we can gd->ram_size to represent the actual RAM size, so
that the actual RAM size is passed to the OS. This is useful if the OS
implements LPAE, and can actually use the "extra" RAM.
However, U-Boot does not implement LPAE and so must deal with 32-bit
physical addresses. To this end, we enhance board_get_usable_ram_top() to
detect the "over-sized" case, and limit the relocation addres so that it
fits into 32-bits of physical address space.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Introduce arch_reserve_stacks() to tailor gd->start_addr_sp and gd->irq_sp to
the architecture needs.
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
At present on some architectures we set up the following before calling
board_init_f():
- global_data
- stack
- early malloc memory
Adding the code to support early malloc and global data setup to every
arch's assembler start-up is a pain. Also this code is not actually
architecture-specific. We can use common code for all architectures and
with a bit of care we can write this code in C.
Add a new function to deal with this. It should be called after memory
is available, with a pointer to the top of the area that should be used
before relocation. The function will set things up and return the lowest
memory address that it allocated/used. That can then be set as the top
of the stack.
Note that on some archs this function will use the stack, so the stack
pointer should be set to same value as is pased to board_init_f_mem().
A margin of 128 bytes will be left for this stack, so that it is not
overwritten. This means that 64 bytes is wasted by this early call.
This is not strictly necessary on several more modern archs, so we could
remove this at the cost of some arch-dependent code.
With this function there is no-longer any need for the assembler code to
zero global_data or set up the early malloc pointers.
Signed-off-by: Simon Glass <sjg@chromium.org>
Compile code with -fPIC to get GOT. Do not build SPL
with fPIC because it increasing SPL size for nothing.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
call hw_watchdog_init() also if CONFIG_AT91SAM9_WATCHDOG
is used.
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
The common/board_r.c has show_model_r() to display the model name
if the DTB has a "model" property. It sounds useful to have a similar
function in common/board_f.c too because most of the boards show
their board name before relocation.
Instead of implementing the same function in both common/board_f.c
and common/board_r.c, let's split it up into common/show_board_info.c.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
For bare platforms we turn off ROM-caching before calling board_init_f_r()
It is then very slow to copy U-Boot from ROM to RAM. So adjust the order so
that the copying happens before we turn off ROM-caching.
Signed-off-by: Simon Glass <sjg@chromium.org>
When CONFIG_TRACE is disabled, linking fails with:
common/built-in.o:(.data.init_sequence_f+0x8): undefined reference to `trace_early_init'
To fix, wrap the call to trace_early_init() with #ifdef CONFIG_TRACE.
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@ti.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Daniel discovered a better solution to the problem this was solving, so
don't do what this patch was doing anymore.
This reverts commit 666ba8444e.
Signed-off-by: Tom Rini <trini@ti.com>
Change the internal sandbox functions to use loff_t for file offsets.
Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
This fixes following warning when compiled with MIPS64
common/board_f.c: In function 'display_text_info':
common/board_f.c:150:2: warning: format '%X' expects argument i
of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat=]
debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n",
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
For some CPUs, having malloc() available very early is useful. There is no
reason to delay this since early malloc is allocated before board_init_f()
is called.
Move early malloc() init nearer to the start of the init sequence.
Signed-off-by: Simon Glass <sjg@chromium.org>
Instead of an x86-specific cpu_init_f() function, use the normal U-Boot one
for this purpose. Also remove a useless/misleading comment.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Instead of having an x86-specific DRAM init function, adjust things so we
can use the normal one.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
gd->fdt_blob is used for FDT control of U-Boot.
If CONFIG_OF_CONTROL is not defined, it is useless.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
This was breaking the build for some boards:
MPC8536DS MPC8536DS_36BIT MPC8536DS_SDCARD MPC8536DS_SPIFLASH qemu-ppce500
Include only these features for some PPC boards if the configuration for MultiProcessor
is enabled.
Signed-off-by: Gabriel Huau <contact@huau-gabriel.fr>
Cc: Tom Rini <trini@ti.com>
Cc: York Sun <yorksun@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
In order to support GPIO access in board_early_init_f() we must set up
driver model before this function is called. In any case, earlier is
better since driver model is (or will become) a key function for most
init.
Signed-off-by: Simon Glass <sjg@chromium.org>
This patch implements the generic board init as described in
doc/README.generic-board.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>
Reviewed-by: Stefan Roese <sr@denx.de>
This allows u-boot to load different OS or Bare Metal application on
different cores of the i.MX6 SoC.
For example: running Android on cpu0 and a RT OS like QNX/FreeRTOS on cpu1.
Signed-off-by: Gabriel Huau <contact@huau-gabriel.fr>
Acked-by: Stefano Babic <sbabic@denx.de>
- init hardware watchdog if applicable
- use CONFIG_SYS_MONITOR_LEN as the gd monitor len for Blackfin
- reserve u-boot memory at the top field of the RAM for Blackfin
- avoid refer to CONFIG_SYS_MONITOR_LEN, which is not defined by Blackfin
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Initialise devices marked 'pre-reloc' and make them available prior to
relocation. Note that this requires pre-reloc malloc() to be available.
Signed-off-by: Simon Glass <sjg@chromium.org>
If we are to have driver model before relocation we need to support some
way of calling memory allocation routines.
The standard malloc() is pretty complicated:
1. It uses some BSS memory for its state, and BSS is not available before
relocation
2. It supports algorithms for reducing memory fragmentation and improving
performace of free(). Before relocation we could happily just not support
free().
3. It includes about 4KB of code (Thumb 2) and 1KB of data. However since
this has been loaded anyway this is not really a problem.
The simplest way to support pre-relocation malloc() is to reserve an area
of memory and allocate it in increasing blocks as needed. This
implementation does this.
To enable it, you need to define the size of the malloc() pool as described
in the README. It will be located above the pre-relocation stack on
supported architectures.
Note that this implementation is only useful on machines which have some
memory available before dram_init() is called - this includes those that
do no DRAM init (like tegra) and those that do it in SPL (quite a few
boards). Enabling driver model preior to relocation for the rest of the
boards is left for a later exercise.
Signed-off-by: Simon Glass <sjg@chromium.org>
First of all this looks a lot better, but it also
prevents a gcc warning (W=1), that the weak function
has no previous prototype.
cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Acked-by: Simon Glass <sjg@chromium.org>
DRAM size should use 64-bit variable when the size could be more than 4GB.
Caught and verified on P4080DS with 4GB DDR.
Signed-off-by: York Sun <yorksun@freescale.com>
Acked-by: Simon Glass <sjg@chromium.org>
Some platforms (tested on mpc85xx, mpc86xx) use global data before calling
function baord_inti_f(). The data should not be cleared later. Any arch
which uses global data in generic board board_init_f() should define
CONFIG_SYS_GENERIC_GLOBAL_DATA.
Signed-off-by: York Sun <yorksun@freescale.com>
CC: Scott Wood <scottwood@freescale.com>
CC: Simon Glass <sjg@chromium.org>
CC: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Simon Glass <sjg@chromium.org>
gd->bd->bi_baudrate is a copy of gd->baudrate.
Since baudrate is a common feature for all architectures,
keep gd->baudrate only.
It is true that bi_baudrate was passed to the kernel in that structure
but it was a long time ago.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Rini <trini@ti.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Acked-by: Michal Simek <monstr@monstr.eu> (For microblaze)
