This patch moves towards reducing board.c to simply a set of init cores for
the three initialisation phases (Flash, Flash/RAM, and RAM), a set of three
init function arrays and a init function array processing function
Use the base address of the 'F' segment as a pointer to the global data
structure. By adding the linear address (i.e. the 'D' segment address) as
the first word of the global data structure, the address of the global data
relative to the 'D' segment can be found simply, for example, by:
fs movl 0, %eax
This makes the gd 'pointer' writable prior to relocation (by reloading the
Global Desctriptor Table) which brings x86 into line with all other arches
NOTE: Writing to the gd 'pointer' is expensive (but we only do it
twice) but using it to access global data members (read and write) is
still fairly cheap
--
Changes for v2:
- Rebased against changes made to patch #3
- Removed extra indent
- Tweaked commit message
This commit introduces no functional changes - It simply re-arranges the
calculations so that adding to them in future commits will be cleaner
--
Changes for v2:
- Fixed typo in title
- Added commit message
Move the relocation offset calculation out of assembler and into C. This
also paves the way for the upcoming init sequence simplification by adding
the board_init_f_r flash to RAM transitional function
--
Changes for v2:
- Added commit message
- Minor adjustment to new stack address comment
The inline assembler is ugly and uses hard coded magic numbers. Make it more
elegant to allow cleaner implementation of future GDT related patches. The
compiler seems smart enough to generate the same code anyway
--
Changes for v2:
- Rebased against revised patch #3
- Use GDT size define instead of magic number
- Added commit message
The implementations of memcpy and memset are now the optimised versions
from glibc, so use them instead of simple copy loops
--
Changes for v2:
- Removed unneeded brackets
As proposed by Mike Frysinger, mkdir can take more than one argument.
Instead of spawning two processes, create both the common and seaboard
directories in one go.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Now that we can set up the UART in common tegra code, make the boards
use it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
We add a way of initialising the selected of UARTs prior to relocation.
Boards can use the board_init_uart_f() instead of repeating this code
themselves.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
funcmux permits selection of config options for particular peripherals,
such as the pins that are used for that peripheral, if there are several
options.
Add UART selection to start with.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Most boards will want to enable a UART early. This function provides
that feature in Tegra architecture code so the code does not need to be
copied on every board.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
The clock init is not board specific, so move it into
the cpu code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This call is more of an architecture requirement than a board
one, so move it there.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Seaboard changes have removed the need for common/board.o in the
Makefile. Propagate this change to the other Tegra2 builds.
Signed-off-by: Tom Warren <twarren@nvidia.com>
We need to define CONFIG_ENV_IS_NOWHERE to avoid this error:
cmd_nvedit.c:69:3: error: #error Define one of CONFIG_ENV_IS_IN_...
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
The Medcom is a 16:9 15" terminal that is used for patient infotainment
in hospitals.
Changes in v3:
* Remove unused implementation of gpio_config_uart().
* Implement MMC/SD card detection.
* Drop board_mmc_getcd() which is now implemented by common Tegra2
code.
* Add MAINTAINERS entry.
Changes in v2:
* No longer override the default CONFIG_SYS_TEXT_BASE setting.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
The Plutux is a set-top box device based on the Tamonten processor
module. It can be connected to a display via an HDMI output.
Changes in v3:
* Remove unused implementation of gpio_config_uart().
* Implement MMC/SD card detection.
* Drop board_mmc_getcd() which is now implemented by common Tegra2
code.
* Add MAINTAINERS entry.
Changes in v2:
* No longer override the default CONFIG_SYS_TEXT_BASE setting.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Tamonten is an NVIDIA Tegra2-based SO-DIMM processor module that is
derived from the Harmony reference design.
Changes in v3:
* Remove unused gpio_config_uart().
* Remove call to tegra2_start().
* Use new tegra2_mmc_init().
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
tegra2_mmc_init() is implemented by the Tegra2 MMC driver. Since most of
the Tegra2-based boards will need to call it, this commit exports it in
the new public asm/arch/mmc.h header file to prevent each board from
providing its own prototype.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
NVIDIA's flashing tools assume that the bootloader is loaded at address
0x00108000. Instead of requiring non-standard builds of those tools
which allow a load address of 0x00E08000, this commit just switches all
Tegra2 boards to use the standard load address.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
The AVP on Tegra2 doesn't boot properly when U-Boot is linked against
the GCC provided libgcc. To work around this, always build and link
against a private libgcc for Tegra2-based boards.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
On Seaboard the UART and SPI interfere with each other. This causes the UART
to receive spurious zero bytes after SPI transactions and also means that
SPI can corrupt a few output characters when it starts up if they are still
in the UART buffer.
This updates the board to use the SPI/UART switch to avoid the problem.
For now this feature is turned off since it needs changes to the NS16550
UART to operate.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Add the SPI / UART switch logic into the Tegra2 SPI driver so that it
can co-exist with the NS16550 UART.
We need the ns16550.h header for NS16550_t for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
The Tegra2 Seaboard has the unfortunate feature that SPI and the console
UART are multiplexed on the same pins. We need to switch between one
and the other during SPI and console activity.
This new file implements a switch and keeps track of which peripheral
owns the pins. It also flips over the controlling GPIO as needed
Since we are adding a second file to board/nvidia/common, we create
a proper Makefile there and remove the direct board.o include from
board/nvidia/seaboard/Makefile
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This uses the SPI flash on Seaboard to store an 8KB environment.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
UART selection is done with a lot of #ifdefs. This cleans things up
a little.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This patch fixes a build warning for the cam_enc_4xx board introduced by
commit d6ec0c0dfc70447cf615ae80a952da81f73f16b4:
spl.c:35:13: warning: 'gdata' defined but not used
spl.c:36:13: warning: 'bdata' defined but not used
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Tom Rini <trini@ti.com>
Cc: Heiko Schocher <hs@denx.de>
Support for variable length images like AIS image was introduced
in commit f0662105b6. A parameter
"-s" was also introduced to prohibit copying of the image file
automatically in the main program. However, this parameter
was implemented incorrectly and the image file was copied
nevertheless.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
This code adds an SPL for booting from SPI flash on DA850 SoCs.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Heiko Schocher <hs@denx.de>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
Cc: Tom Rini <trini@ti.com>
Acked-by: Tom Rini <trini@ti.com>
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Heiko Schocher <hs@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Scott Wood <scottwood@freescale.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
The twister board is a development board using
the TAM3517 SOM.
Support for NAND, 2 Ethernet (EMAC and SMC911),
USB (EHCI_OMAP).
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Tapani Utrianen <tapani@technexion.com>
CC: Tom Rini <tom.rini@gmail.com>
CC: Sandeep Paulraj <s-paulraj@ti.com>
The TAM3517 is a SOM module that can be used on custom boards.
The patch add a common configuration file that is included
by the boards using this module.
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Tapani Utrianen <tapani@technexion.com>
CC: Tom Rini <tom.rini@gmail.com>
CC: Sandeep Paulraj <s-paulraj@ti.com>
Fix the following checkpatch warning:
WARNING: braces {} are not necessary for single statement blocks
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
