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u-boot/arch/mips
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Stefan Roese f913eab9b9 mips: mt76xx: Remove cache workaround and select SYS_MALLOC_CLEAR_ON_INIT 
With commit 06985289d4 ("watchdog: Implement generic watchdog_reset()
version") the init sequence has changed in arch_misc_init(), resulting
in a re-appearance of the d-cache issue on MT7688 boards (e.g. gardena).
When this happens, the first (or sometimes later ones as well) TFTP
command hangs and does not complete correctly. This leads to the
assumption that the d-cache is not in a clean state once the ethernet
driver is called (d-cache is used here for the buffers). The old work-
around with the cache flush somehow does not work any more now with
the new code change.

To fix this issue, this patch now removes the old workaround and selects
CONFIG_SYS_MALLOC_CLEAR_ON_INIT for ARCH_MTMIPS. With this option the
complete malloc area is initialized with zeros (cache lines are touched).
Testing has shown that this also fixes the issue on the MT7688 boards.

Signed-off-by: Stefan Roese <sr@denx.de>
Suggested-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2019-05-24 15:55:17 +02:00
..
cpu linker: Modify linker scripts to be more generic 2019-01-26 22:55:53 -05:00
dts net: mscc: ocelot: Update DTS for Luton pcb90 2019-05-03 16:46:36 +02:00
include/asm mips: Add SPL header 2018-12-19 15:23:01 +01:00
lib arch: mips: Update initrd_start and initrd_end 2019-05-03 16:42:23 +02:00
mach-ath79 mips: add initial support for qca956x referenced board 2019-04-12 17:32:50 +02:00
mach-bmips bmips: swapping IO space isn't required 2018-12-10 18:46:45 +01:00
mach-jz47xx MIPS: jz47xx: remove custom u-boot-spl.lds 2019-01-16 13:56:43 +01:00
mach-mscc net: mscc: ocelot: Update network driver for pcb120 2019-05-03 16:42:23 +02:00
mach-mtmips mips: mt76xx: Remove cache workaround and select SYS_MALLOC_CLEAR_ON_INIT 2019-05-24 15:55:17 +02:00
mach-pic32 Kconfig: Sort bool, default, select and imply options 2018-07-30 07:18:48 -04:00
config.mk MIPS: fix linking of standalone programs 2018-11-18 16:02:23 +01:00
Kconfig mips: mt76xx: Remove cache workaround and select SYS_MALLOC_CLEAR_ON_INIT 2019-05-24 15:55:17 +02:00
Makefile mips: rename mach-mt7620 to mach-mtmips 2019-05-03 16:43:11 +02:00
Makefile.postlink SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00