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Add support for using PCI before SDRAM is available, using early malloc()
and global_data.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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We want access PCI earlier in the init sequence, so refactor the code so
that it does not require use of a BSS variable to work. This will allow us
to use early malloc() to store information about a PCI hose.
Common PCI code moves to arch/x86/cpu/pci.c and a new
board_pci_setup_hose() function is provided by boards to set up the (single)
hose used by that board.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Add support for CAR so that we have memory to use prior to DRAM init.
On link there is a total of 128KB of CAR available, although some is
used for the memory reference code.
Signed-off-by: Simon Glass <[email protected]>
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On x86 it is common to use 'post codes' which are 8-bit hex values emitted
from the code and visible to the user. Traditionally two 7-segment displays
were made available on the motherboard to show the last post code that was
emitted. This allows diagnosis of a boot problem since it is possible to
see where the code got to before it died.
On modern hardware these codes are not normally visible. On Chromebooks
they are displayed by the Embedded Controller (EC), so it is useful to emit
them. We must enable this feature for the EC to see the codes, so add an
option for this.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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This board is a 'bare' version of the existing 'link 'board. It does not
require coreboot to run, but is intended to start directly from the reset
vector.
This initial commit has place holders for a wide range of features. These
will be added in follow-on patches and series. So far it cannot be booted
as there is no ROM image produced, but it does build without errors.
Signed-off-by: Simon Glass <[email protected]>
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This implementation has a 'cpu' prefix and returns a pointer to the string,
avoiding the need for copying.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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These are no-longer needed so drop them.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Add a function to get the stack pointer and another to halt the CPU.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Return the saved TSC frequency in get_tbclk_mhz().
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
Tested-by: Simon Glass <[email protected]>
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Use the same way that Linux does for quick TSC calibration via PIT
when calibration via MSR fails.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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The CPU identification happens in x86_cpu_init_f() and corresponding
fields are saved in the global data for later use.
Signed-off-by: Bin Meng <[email protected]>
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The built in self test value is available in register eax on start-up. Save
it so that it can be accessed later. Unfortunately we must wait until the
global_data is available before we can do this, so there is a little bit of
shuffling to keep it around.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Some functions are missing prototypes. Fix those that are specific to x86.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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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 <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Instead of having an x86-specific DRAM init function, adjust things so we
can use the normal one.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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The boot_zimage() function is badly named it can also boot a raw kernel.
Rename it, and try to avoid pointers for memory addresses as it involves
lots of casting.
Signed-off-by: Simon Glass <[email protected]>
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Add code to jump to a 64-bit Linux kernel. We need to set up a flat page
table structure, a new GDT and then go through a few hoops in the right
order.
Signed-off-by: Simon Glass <[email protected]>
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Display the type of CPU (x86 or x86_64) when starting up.
Signed-off-by: Simon Glass <[email protected]>
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Update this file to include x86_64 fields.
Signed-off-by: Simon Glass <[email protected]>
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These functions really don't belong in physmem as they relate to the
cpu. Move them.
Signed-off-by: Simon Glass <[email protected]>
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There's a definition in stdint.h (provided by gcc) which will be more correct
if available.
Define CONFIG_USE_STDINT to use this feature, or USE_STDINT=1 on the 'make'
commmand.
This adjusts the settings for x86 and sandbox, with both have 64-bit options.
Signed-off-by: Gabe Black <[email protected]>
Reviewed-by: Gabe Black <[email protected]>
Tested-by: Gabe Black <[email protected]>
Reviewed-by: Bill Richardson <[email protected]>
Rewritten to be an option, since stdint.h is often available only in glibc.
Changed to preserve a clear boundary between stdint and non-stdint
Signed-off-by: Simon Glass <[email protected]>
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This makes use of the existing device tree node to use driver model
for the serial console.
Signed-off-by: Simon Glass <[email protected]>
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This code doesn't follow the normal approach of having its arch-specific
definitions in an arch-specific directory. Add a new arch-specific file
and make use of it.
Signed-off-by: Simon Glass <[email protected]>
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The private libgcc is supported only on ARM, MIPS, PowerPC, SH, x86.
Those architectures should "select" HAVE_PRIVATE_LIBGCC and
CONFIG_USE_PRIVATE_LIBGCC should depend on it.
Currently, this option is enabled on Tegra boards and x86 architecture.
Move the definition from header files to Kconfig.
Signed-off-by: Masahiro Yamada <[email protected]>
Tested-by: Simon Glass <[email protected]>
Acked-by: Simon Glass <[email protected]>
Cc: Stephen Warren <[email protected]>
Cc: Tom Warren <[email protected]>
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The motivation of this commit is to change CONFIG_USE_PRIVATE_LIBGCC
to a boolean macro so we can move it to Kconfig.
In the current implementation, there are two forms of syntax
for this macro:
- CONFIG_USE_PRIVATE_LIBGCC=y
- CONFIG_USE_PRIVATE_LIBGCC=path/to/private/libgcc
The latter is only used by x86 architecture.
With a little bit refactoring, it can be converted to the former.
Signed-off-by: Masahiro Yamada <[email protected]>
Tested-by: Simon Glass <[email protected]>
Acked-by: Simon Glass <[email protected]>
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The x86 bootm code is quite special, and geared to zimage. Adjust it
to support device tree and make it more like the ARM code, with
separate bootm stages and functions for each stage.
Create a function announce_and_cleanup() to handle printing the
"Starting kernel ..." message and put it in bootm so it is in one
place and can be used by any loading code. Also move the
board_final_cleanup() function into bootm.
Signed-off-by: Simon Glass <[email protected]>
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These options are used by the image code. To allow us to use the generic
code more easily, define these for x86.
Signed-off-by: Simon Glass <[email protected]>
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Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Signed-off-by: Masahiro Yamada <[email protected]>
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Signed-off-by: Wolfgang Denk <[email protected]>
[trini Don't remove some copyrights by accident]
Signed-off-by: Tom Rini <[email protected]>
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Signed-off-by: Wolfgang Denk <[email protected]>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <[email protected]>
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Some changes are needed to x86 timer functions to support tracing. Add
these so that the feature works correctly.
Signed-off-by: Simon Glass <[email protected]>
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Coreboot provides a lot of useful timing information. Provide a facility
to add this to bootstage on start-up.
Signed-off-by: Simon Glass <[email protected]>
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While we don't want PCAT timers for timing, we want timer 2 so that we can
still make a beep. Re-purpose the PCAT driver for this, and enable it in
coreboot.
Signed-off-by: Simon Glass <[email protected]>
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This timer runs at a rate that can be calculated, well over 100MHz. It is
ideal for accurate timing and does not need interrupt servicing.
Tidy up some old broken and unneeded implementations at the same time.
To provide a consistent view of boot time, we use the same time
base as coreboot. Use the base timestamp supplied by coreboot
as U-Boot's base time.
Signed-off-by: Simon Glass <[email protected]>base
Signed-off-by: Simon Glass <[email protected]>
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panic_puts() can be called in early boot to display a message. It might
help with early debugging.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Tom Wai-Hong Tam <[email protected]>
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Since we use CONFIG_SYS_GENERIC_BOARD on x86, we don't need this anymore.
Signed-off-by: Simon Glass <[email protected]>
Acked-by: Graeme Russ <[email protected]>
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Graeme Russ pointed out that this code is no longer used. Remove it.
Signed-off-by: Simon Glass <[email protected]>
Acked-by: Graeme Russ <[email protected]>
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This will be used exclusively on x86, so enable it for the whole
architecture.
Signed-off-by: Simon Glass <[email protected]>
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This enables generic board support so that x86 boards can define
CONFIG_SYS_GENERIC_BOARD.
Signed-off-by: Simon Glass <[email protected]>
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These are defined in asm-generic/sections.h, so remove them from
architecture-specific files.
Signed-off-by: Simon Glass <[email protected]>
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We can use the declarations of __bss_start and _end from this header
instead of declaring them locally.
Signed-off-by: Simon Glass <[email protected]>
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We create a separate header file for link symbols defined by the link
scripts. It is helpful to have these all in one place and try to
make them common across architectures. Since Linux already has a similar
file, we bring this in even though many of the symbols there are not
relevant to us.
Each architecture has its own asm/sections.h where symbols specifc to
that architecture can be added. For now everything except AVR32 just
includes the generic header.
One change is needed in arch/avr32/lib/board.c to make this conversion
work.
Reviewed-by: Tom Rini <[email protected]> (version 5)
Signed-off-by: Simon Glass <[email protected]>
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With CONFIG_OF_CONTROL we may have an FDT in the BSS region. Relocate
it up with the rest of U-Boot to keep the rest of memory free.
Signed-off-by: Simon Glass <[email protected]>
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With this symbol we can easy append something (e.g. an FDT) to the U-Boot
binary and access it from within U-Boot.
Signed-off-by: Simon Glass <[email protected]>
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It is useful to be able to access the timer before U-Boot has relocated
so that we can fully support bootstage.
Add new global_data members to support this.
Signed-off-by: Simon Glass <[email protected]>
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This code is pretty old and we want to support only 32-bit systems now.
Signed-off-by: Simon Glass <[email protected]>
Acked-by: Graeme Russ <[email protected]>
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This x86 CPU variant is no longer required as the boards that use it have
been removed.
Signed-off-by: Simon Glass <[email protected]>
Acked-by: Graeme Russ <[email protected]>
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The libfdt.h file is the definition file for libfdt. It is unnecessary
to include other fdt header files (the necessary ones are pulled in
by libfdt.h).
Signed-off-by: Gerald Van Baren <[email protected]>
Acked-by: Simon Glass <[email protected]>
Acked-by: Stefan Roese <[email protected]>
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and, if including libfdt.h which includes libfdt_env.h in
the correct order, don't include fdt.h before libfdt.h.
this is needed to get the fdt type definitions set from
the project environment before fdt.h uses them.
Signed-off-by: Kim Phillips <[email protected]>
Cc: Jerry Van Baren <[email protected]>
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