u-boot-brain/arch
Peng Fan ad7af5d7e4 imx6: cache: disable L2 before touching Auxiliary Control Register
According PL310 TRM, Auxiliary Control Register
"
The register must be written to using a secure access, and it can be
read using either a secure or a NS access. If you write to this register
with a NS access, it results in a write response with a DECERR response,
and the register is not updated. Writing to this register with the L2
cache enabled, that is, bit[0] of L2 Control Register set to 1,
results in a SLVERR.
"

So If L2 cache is already enabled by ROM, chaning value of ACR
will cause SLVERR and uboot hang.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
2016-05-06 10:43:39 -04:00
..
arc arc/cache: really do flush_dcache_all() even if IOC exists 2016-04-21 20:09:59 +03:00
arm imx6: cache: disable L2 before touching Auxiliary Control Register 2016-05-06 10:43:39 -04:00
avr32 Change my mailaddress 2016-05-02 18:37:09 -04:00
blackfin configs: Re-sync almost all of cmd/Kconfig 2016-04-25 15:09:40 -04:00
m68k m68k: fix broken buildman m68k 2016-04-18 17:11:41 -04:00
microblaze microblaze: Remove !OF_CONTROL code for timer and interrupt 2016-04-04 20:28:38 +02:00
mips Fix various typos, scattered over the code. 2016-05-05 21:39:26 -04:00
nds32 Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
nios2 dm: Use uclass_first_device_err() where it is useful 2016-03-14 15:34:50 -06:00
openrisc openrisc: Fix build errors 2016-01-25 10:40:01 -05:00
powerpc Fix various typos, scattered over the code. 2016-05-05 21:39:26 -04:00
sandbox sandbox: Set CONFIG_SYS_CPU 2016-04-18 17:11:49 -04:00
sh Add more SPDX-License-Identifier tags 2016-01-19 08:31:21 -05:00
sparc Fix spelling of "transferred". 2016-03-22 12:16:16 -04:00
x86 x86: Correct typo of Miao Yan's email address 2016-04-22 11:26:32 +08:00
.gitignore .gitignore: drop include/asm/proc from ignore pattern 2014-06-19 11:18:54 -04:00
Kconfig MIPS: add initial infrastructure for device-tree files 2016-01-16 21:06:45 +01:00