On SoCFPGA Gen5 systems, it can rarely happen that a reboot from Linux
will result in stale data in PL310 L2 cache controller. Even if the L2
cache controller is disabled via the CTRL register CTRL_EN bit, those
data can interfere with operation of devices using DMA, like e.g. the
DWMMC controller. This can in turn cause e.g. SPL to fail reading data
from SD/MMC.
The obvious solution here would be to fully reset the L2 cache controller
via the reset manager MPUMODRST L2 bit, however this causes bus hang even
if executed entirely from L1 I-cache to avoid generating any bus traffic
through the L2 cache controller.
This patch thus configures and enables the L2 cache controller very early
in the SPL boot process, clears the L2 cache and disables the L2 cache
controller again.
The reason for doing it in SPL is because we need to avoid accessing any
of the potentially stale data in the L2 cache, and we are certain any of
the stale data will be below the OCRAM address range. To further reduce
bus traffic during the L2 cache invalidation, we enable L1 I-cache and
run the invalidation code entirely out of the L1 I-cache.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Replace CONFIG_SPL_EXT_SUPPORT to CONFIG_SPLY_FS_EXT4 so both
obj-$(CONFIG_$(SPL_)FS_EXT4) and CONFIG_IS_ENABLED(FS_EXT4) can be
used to control the build in both SPL and U-Boot.
Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Replace CONFIG_SPL_FAT_SUPPORT with CONFIG_SPL_FS_FAT so
obj-$(CONFIG_$(SPL_)FS_FAT) can be used to control the build in both
SPL and U-Boot.
Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
If CONFIG_DEBUG_UART is enabled, correctly initialize
the debug uart before console is initialized to debug
early boot problems in SPL.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
In spl_gen5's board_init_f(), gd->malloc_base is manually assigned
at the end of the function to point to sdram. This code is outdated
as by now, the heap is switched to sdram by the common function
spl_relocate_stack_gd() if the appropriate defines are set.
As it was, the value assigned manually was directly overwritten by
this common code, so remove the manual assignment.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
There were NULL pointers dereferenced because DM was used
too early without correct initialization:
- malloc_simple returned NULL when called from preloader_console_init()
because gd->malloc_limit was 0
- uclass_add dereferenced gd->uclass_root members which were NULL because
dm_init (or one of its relatives) has not been called.
All this is fixed by calling spl_early_init before calling
preloader_console_init.
This fixes commit 73172753f4 ("ARM: socfpga: Convert to DM serial")
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Restructure the SPL so each devices such as CV, A10 and S10
will have their own dedicated SPL file. SPL file determine
the HW initialization flow which is device specific
Signed-off-by: Chin Liang See <chin.liang.see@intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
2018-07-12 09:22:11 +02:00
Renamed from arch/arm/mach-socfpga/spl.c (Browse further)
