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* ARM: tegra: use standard variables to define load addressesStephen Warren2012-10-29-3/+28
| | | | | | | | | | | | | | | | Currently, Tegra's default environment uses non-standard variables to define where boot scripts should load the kernel, FDT, and initrd. This change both changes the variable names to match those described in U-Boot's README, and shuffles their values around a little so that the values make a little more sense; see comments in the patch for rationale behind the values chosen. Note that this patch does remove the old non-standard variable "fdt_load" from the default environment, so this patch requires people to change their boot scripts. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
* ARM: tegra: define CONFIG_SYS_BOOTMAPSZStephen Warren2012-10-29-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This define indicates the size of the memory region where it is safe to place data passed to the Linux kernel (ATAGs, DTB, initrd). The value needs to be: a) Less than or equal to RAM size. b) Small enough that the area is not within the kernel's highmem region, since the kernel cannot access ATAGs/DTB/initrd from highmem. c) Large enough to hold the kernel+DTB+initrd. 256M seems large enough for (c) in most circumstances, and small enough to satisfy (a) and (b) across any possible Tegra board. Note that the user can override this value via environment variable "bootm_mapsize" if needed. The advantage of defining BOOTMAPSZ is that we no longer need to define variable fdt_high in the default environment. Previously, we defined this to prevent the DTB from being relocated to the very end of RAM, which on most Tegra systems is within highmem, and hence which would cause boot failures. A user can still define this variable themselves if they want the FDT to be either left in-place wherever loaded, or copied to some other specific location. Similarly, there should no longer be a strict requirement for the user to define initrd_high if using an initrd. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* tegra: enable CONFIG_CMD_PARTStephen Warren2012-10-15-0/+9
| | | | | | | | This is extremely likely to be used from the boot.scr that Tegra's default bootcmd locates and executes. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* serial: Remove CONFIG_SERIAL_MULTI from config filesMarek Vasut2012-10-15-5/+0
| | | | | | | | | | | | | Remove any notion of CONFIG_SERIAL_MULTI from board config files. Since CONFIG_SERIAL_MULTI is now enabled by default, it is useless to specify this config option in the board config files. Therefore remove it. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Anatolij Gustschin <agust@denx.de> Cc: Stefan Roese <sr@denx.de> Signed-off-by: Tom Rini <trini@ti.com>
* Tegra: Change Tegra20 to Tegra in common code, prep for T30Tom Warren2012-09-10-0/+214
Convert TEGRA20_ defines to either TEGRA_ or NV_PA_ where appropriate. Convert tegra20_ source file and function names to tegra_, also. Upcoming Tegra30 port will use common code/defines/names where possible. Signed-off-by: Tom Warren <twarren@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com>