Commit Graph

123 Commits

Author SHA1 Message Date
Ashish kumar
2ea3a448cc armv8: ls2080a: Implement workaround for core errata 829520, 833471
829520: Code bounded by indirect conditional branch might corrupt
instruction stream.
Workaround: Set CPUACTLR_EL1[4] = 1'b1 to disable the Indirect
Predictor.

833471: VMSR FPSCR functional failure or deadlock.
Workaround: Set CPUACTLR[38] to 1, which forces FPSCR write flush.

Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-02-01 13:58:22 -08:00
Tom Rini
cd85bec36d Merge branch 'master' of git://git.denx.de/u-boot-fsl-qoriq 2016-01-27 15:05:36 -05:00
Gong Qianyu
166ef1e90c armv8/ls1043aqds: add QSPI support in SD boot
QSPI and IFC are pin-multiplexed on LS1043A. So we use
ls1043aqds_sdcard_ifc_defconfig to support IFC in SD boot and
ls1043aqds_sdcard_qspi_defconfig to support QSPI in SD boot.

Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-01-27 08:28:55 -08:00
Aneesh Bansal
d041288586 secure_boot: enable chain of trust for ARM platforms
Chain of Trust is enabled for ARM platforms (LS1021 and LS1043).
In board_late_init(), fsl_setenv_chain_of_trust() is called which
will perform the following:
- If boot mode is non-secure, return (No Change)
- If boot mode is secure, set the following environmet variables:
   bootdelay = 0 (To disable Boot Prompt)
   bootcmd = CONFIG_CHAIN_BOOT_CMD (Validate and execute Boot script)

Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com>
Acked-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-01-27 08:12:49 -08:00
Michal Simek
be6f6af1d6 ARM64: zynqmp: Add initial support for the first silicon
Add basic configuration for the first silicon.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-01-27 15:55:56 +01:00
Michal Simek
0785dfd8a7 ARM64: zynqmp: Use the same U-Boot version with/without ATF
Remove SECURE_IOU option which is not needed. U-Boot itself can detect
which EL level it is on and based on that use do platform setup.
It also simplify usage because one Kconfig entry is gone.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-01-27 15:55:56 +01:00
Pratiyush Mohan Srivastava
191e3c0527 armv8: Enable all 8 DPMAC ports in LS2080A Personality
LS2080A has support for 8 DPMAC ports out of which
only 5 ports can be used at a time.
Enabling all 8 DPMAC ports of LS2080A personality.

Signed-off-by: Pratiyush Mohan Srivastava <pratiyush.srivastava@freescale.com>
Acked-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-01-25 08:24:17 -08:00
Prabhakar Kushwaha
6f14e257c4 armv8: fsl-lsch3: fixup SYSCLK frequency in device tree
SYSCLK frequency is dependent on on-board switch settings. It may
vary as per requirement. boot-loader is aware of board switch
configurations.

So Fixup Linux device tree from boot-loader.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
CC: Mingkai Hu <Mingkai.Hu@freescale.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-01-25 08:24:15 -08:00
Sergey Temerkhanov
a5b9fa30ce armv8: Add Secure Monitor/Hypervisor Call (SMC/HVC) infrastructure
This commit adds functions issuing calls to secure monitor or
hypervisore. This allows using services such as Power State
Coordination Interface (PSCI) provided by firmware, e.g. ARM
Trusted Firmware (ATF)

The SMC call can destroy all registers declared temporary by the
calling conventions. The clobber list is "x0..x17" because of
this

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
2016-01-19 22:25:36 +00:00
Sergey Temerkhanov
94f7ff36e5 armv8: New MMU setup code allowing to use 48+ bits PA/VA
This patch adds code which sets up 2-level page tables on ARM64 thus
extending available VA space. CPUs implementing 64k translation
granule are able to use direct PA-VA mapping of the whole 48 bit
address space.
It also adds the ability to reset the SCTRL register at the very beginning
of execution to avoid interference from stale mappings set up by early
firmware/loaders/etc.

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>
2016-01-19 22:25:36 +00:00
Mingkai Hu
0d6faf2bd0 armv8/ls1043a: Implement workaround for PEX erratum A009929
Consecutive write transactions from core to PCI express outbound
path hangs after 25 to 30 transactions depending on core freq.
This erratum enable the mbist clock through COP register setting.

Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-12-17 08:52:18 +08:00
Tang Yuantian
989c5f0a8f armv8: Add sata support on Layerscape ARMv8 board
Freescale ARM-based Layerscape contains a SATA controller
which comply with the serial ATA 3.0 specification and the
AHCI 1.3 specification.
This patch adds SATA feature on ls2080aqds, ls2080ardb and
ls1043aqds boards.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-12-15 08:57:35 +08:00
Aneesh Bansal
70f959c3c4 armv8: Make SEC read/write as snoopable for LS1043
For LS1043, SEC read/writes are made snoopable by setting
the corresponding bits in SCFG to avoid coherency issues.

Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-12-15 08:57:34 +08:00
Aneesh Bansal
b644d3e932 armv8: define usec2ticks function
usec2ticks() function has been defined for ARMv8 which will
be used by SEC Driver.

Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-12-15 08:57:34 +08:00
York Sun
c04921414c armv8: fsl-layerscale: Rewrite reserving memory for MC and debug server
MC and debug server are not board-specific. Move reserving memory to SoC
file, using the new board_reserve_ram_top function. Reduce debug server
memory by 2MB to make room for secure memory.

In the system with MC and debug server, the top of u-boot memory
is not the end of memory. PRAM is not used for this reservation.

Signed-off-by: York Sun <yorksun@freescale.com>
2015-12-15 08:57:33 +08:00
York Sun
c107c0c05c armv8: fsl-layerscape: Make DDR non secure in MMU tables
DDR has been set as secure in MMU tables. Non-secure master such
as SDHC DMA cannot access data correctly. Mixing secure and non-
secure MMU entries requirs the MMU tables themselves in secure
memory. This patch moves MMU tables into a secure DDR area.

Early MMU tables are changed to set DDR as non-secure. A new
table is added into final MMU tables so secure memory can have
2MB granuality.

gd->secure_ram tracks the location of this secure memory. For
ARMv8 SoCs, the RAM base is not zero and RAM is divided into several
banks. gd->secure_ram needs to be maintained before using. This
maintenance is board-specific, depending on the SoC and memory
bank of the secure memory falls into.

Signed-off-by: York Sun <yorksun@freescale.com>
2015-12-15 08:57:33 +08:00
Yao Yuan
000f4e7686 move erratum a008336 and a008514 to soc specific file
As the errata A008336 and A008514 do not apply to all LS series SoCs
(such as LS1021A, LS1043A) we move them to an soc specific file

Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-12-15 08:57:32 +08:00
Tom Rini
1a33892164 fsl_*_serdes.c: Modify memset call in serdes_init
GCC 5.x does not like sizeof(array_variable) and errors out.  Change these
calls to be instead sizeof(u8) (as that's what serdes_prtcl_map is) *
SERDES_PRCTL_COUNT (the number of array elements).

Cc: York Sun <yorksun@freescale.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-12-13 18:27:29 -08:00
Prabhakar Kushwaha
b401736463 armv8: ls2085a: Add workaround of errata A009635
If the core runs at higher than x3 speed of the platform, there is
possiblity about sev instruction to getting missed by other cores.
This is because of SoC Run Control block may not able to sample
the EVENTI(Sev) signals.

Configure Run Control and EPU to periodically send out EVENTI signals to
wake up A57 cores.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-11-30 09:11:12 -08:00
York Sun
1f6236f06b armv8: fsl-layerscape: Fix "cpu release" command
When one core is released, other cores may not have valid entry
address. Those cores are trapped by "wfe" and wait for further
instruction. When their address is set, they need to be kicked
off by "sev".

Signed-off-by: York Sun <yorksun@freescale.com>
2015-11-30 09:11:12 -08:00
Alison Wang
d764129d30 armv8/layerscape: Update MMU table with execute-never bits
For most device addresses excution shouldn't be allowed. Revise
the MMU table to enforce execute-never bits. OCRAM, DDR and IFC
are allowed for excution.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Alison Wang <alison.wang@freescale.com>
Reported-by: Zhichun Hua <zhichun.hua@freescale.com>
2015-11-30 09:11:11 -08:00
Gong Qianyu
18a0d8eb46 armv8/fsl-layerscape: Remove reference to gdata
The global_data pointer (gd) has been set earlier in crt0_64.S.
So there's no need to assign it again. Remove gdata since it is going
away in U-Boot.

Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-11-30 09:11:10 -08:00
Prabhakar Kushwaha
06b5301043 armv8: ls2085a: Add support of LS2085A SoC
Freescale's LS2085A is a another personality of LS2080A SoC with
support of AIOP and DP-DDR.
This Patch adds support of LS2085A Personality.

Signed-off-by: Pratiyush Mohan Srivastava <pratiyush.srivastava@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
[York Sun: Updated MAINTAINERS files
           Dropped #ifdef in cpu.h
           Add CONFIG_SYS_NS16550=y in defconfig]
Reviewed-by: York Sun <yorksun@freescale.com>
2015-11-30 09:10:47 -08:00
Prabhakar Kushwaha
449372148f armv8: LS2080A: Rename LS2085A to reflect LS2080A
LS2080A is a prime personality of Freescale’s LS2085A. It is a non-AIOP
personality without support of DP-DDR, L2 switch, 1588, PCIe endpoint etc.
So renaming existing LS2085A code base to reflect LS2080A (Prime personality)

Signed-off-by: Pratiyush Mohan Srivastava <pratiyush.srivastava@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
[York Sun: Dropped #ifdef in cpu.c for cpu_type_list]
Reviewed-by: York Sun <yorksun@freescale.com>
2015-11-30 08:53:04 -08:00
Prabhakar Kushwaha
fb4a87a737 driver: net: fsl-mc: Add DPAA2 commands to manage MC
Management complex Firmware, DPL and DPC are depolyed during u-boot boot
sequence.

Add new DPAA2 commands to manage Management Complex (MC) i.e. start mc, aiop
and apply DPL from u-boot command prompt.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-11-30 08:53:03 -08:00
Prabhakar Kushwaha
99e904c1f0 armv8: lsch3: Fix lane protocol parsing logic
Current implementation only consider SGMIIs for dpmac initialization.
XFI serdes protocols also uses dpmac.

Also, fix lane protocol parsing logic to consider both XFIs and SGMIIs.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-11-30 08:53:02 -08:00
Michal Simek
a7bcd4c32a zynqmp: mp: Add support for booting R5 from any address
Put jump trampoline to TCM at 0 and setup R5 reset address to 0.
Jump trampoline ensures that jump to the right location.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-11-19 10:42:45 +01:00
Stephen Warren
3c6af3bad4 armv8: allow custom MMU setup routines on ARMv8
In order for noncached_init() to operate correctly, SoCs must set up a
custom page table with fine-grained (2MiB) sections, which can be
configured from noncached_init().

This is currently performed by arch/arm/cpu/armv8/{fsl-lsch3,zynqmp}/cpu.c
by cut/pasting and re-implementing mmu_setup, enable_caches(), etc. There
are some other reasons for the duplication there though, such as enabling
icache early, and enabling dcaching earlier with a different configuration.

This change makes mmu_setup() a weak implementation, so that the MMU setup
code can be replaced without having to duplicate other code that calls it.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2015-11-10 18:03:41 +01:00
Hou Zhiqiang
831c068fcf armv8/ls1043a: Enable secondary cores
After the secondary cores enter U-Boot, use CONFIG_ARMV8_MULTIENTRY to
make secondary cores excute in spin loop.

Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-10-29 10:34:02 -07:00
Yangbo Lu
8ef0d5c438 armv8/ls1043ardb: esdhc: Add esdhc support for ls1043ardb
This patch adds esdhc support for ls1043ardb.

Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-10-29 10:34:01 -07:00
Shaohui Xie
e82973414d armv8/ls1043a: Add Fman support
Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-10-29 10:34:01 -07:00
Gong Qianyu
3ad4472923 armv8/ls1043ardb: Add nand boot support
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-10-29 10:34:01 -07:00
Mingkai Hu
f3a8e2b7d4 armv8/ls1043ardb: Add LS1043ARDB board support
LS1043ARDB Specification:
-------------------------
Memory subsystem:
 * 2GByte DDR4 SDRAM (32bit bus)
 * 128 Mbyte NOR flash single-chip memory
 * 512 Mbyte NAND flash
 * 16 Mbyte high-speed SPI flash
 * SD connector to interface with the SD memory card

Ethernet:
 * XFI 10G port
 * QSGMII with 4x 1G ports
 * Two RGMII ports

PCIe:
 * PCIe2 (Lanes C) to mini-PCIe slot
 * PCIe3 (Lanes D) to PCIe slot

USB 3.0: two super speed USB 3.0 type A ports

UART: supports two UARTs up to 115200 bps for console

Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
2015-10-29 10:34:01 -07:00
Mingkai Hu
8281c58fd4 armv8/fsl_lsch2: Add fsl_lsch2 SoC
Freescale LayerScape with Chassis Generation 2 is a set of SoCs with
ARMv8 cores and 2rd generation of Chassis.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-10-29 10:34:00 -07:00
Mingkai Hu
9f3183d2d6 armv8/fsl_lsch3: Change arch to fsl-layerscape
There are two LS series processors are built on ARMv8 Layersacpe
architecture currently, LS2085A and LS1043A. They are based on
ARMv8 core although use different chassis, so create fsl-layerscape
to refactor the common code for the LS series processors which also
paves the way for adding LS1043A platform.

Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-10-29 10:34:00 -07:00
Alison Wang
6a00a9cb15 armv8/fsl-lsch3: fdt: Check the pointer returned from call to a function may be NULL
Pointer 'reg' returned from call to function 'fdt_getprop' may be
NULL, will be passed to function and may be dereferenced there by
passing argument 1 to function 'of_read_number'. So check pointer
'reg' first.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-10-26 09:09:55 -07:00
Thierry Reding
ad3d6e88a1 armv8/mmu: Set bits marked RES1 in TCR
For EL3 and EL2, the documentation says that bits 31 and 23 are reserved
but should be written as 1.

For EL1, only bit 23 is not reserved, so only write bit 31 as 1.

Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-10-15 14:46:43 +02:00
Albert ARIBAUD
13a3972585 Merge remote-tracking branch 'u-boot/master' 2015-10-14 10:46:36 +02:00
Thierry Reding
70bcb43e7d armv8: Make COUNTER_FREQUENCY optional
Some platforms have the means to determine the counter frequency at
runtime, so give them an opportunity to do so.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-09-16 16:10:22 -07:00
Peng Fan
208bd51396 arm: armv8 correct value passed to __asm_dcache_all
>From source code comments:
"x0: 0 flush & invalidate, 1 invalidate only"

Current value 0xffff can make invalidate work, since we only judge whether
input value is 0 or not, see following code:
"
    tbz     w1, #0, 1f
    dc      isw, x9
    b       2f
1:  dc      cisw, x9      /* clean & invalidate by set/way */
2:  subs    x6, x6, #1    /* decrement the way */
"

Later we may add "2 clean only" support. So following the comments,
correct value from 0xffff to 1.

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
2015-09-12 09:03:39 +02:00
Alison Wang
9979922015 armv8: fsl-lsch3: Rewrite MMU translation table entries
This patch rewrites MMU translation table entries. To start, all table
entries are written as "invalid", then "device-ngnrnr" and "normal" are
written to the entries to enable access to specific addresses.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
2015-09-01 21:49:27 -05:00
Prabhakar Kushwaha
b1caae1b3c armv8: fsl-lsch3: Initiaze 4 MACs per QSGMII in dpmac_info
Every QSGMII SerDes Protocol usage 4 MACs.

So add/repeat QSGMII information for 4 MACs in dpmac_info strucuture.

Signed-off-by: King Chung Lo@freescale.com <KingChungLo@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-09-01 21:38:33 -05:00
Prabhakar Kushwaha
ee976651b7 armv8: ls2085a: Update serdes1_cfg_tbl for 0x33 & 0x35 protocol
Update 0x33 and 0x35 serdes protocol as per updated SoC document
in array serdes1_cfg_tbl.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-09-01 21:38:25 -05:00
Bhupesh Sharma
3ffa95c283 armv8: Add framework for CCN-504 interconnect configuration
This patch adds a minimal framework for Dickens CCN-504
interconnect configuration - mainly related to adding Clusters/cores
to snoop/DVM domain and setting QoS of the RN-I ports.

LS2085A platform makes use of these configurations to support
better network data performance and to boot a SMP Linux.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-09-01 21:37:49 -05:00
Siva Durga Prasad Paladugu
16fa00a711 zynqmp: usb: Add usb dwc3 driver support for zynqmp
Added usb dwc3 driver support for zynqmp
this also supports the DFU and LTHOR to download
the linux images on to RAM and cen be booted from
those linux images.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-08-19 11:27:30 +02:00
Michal Simek
37ecd04fe3 ARM: zynqmp: Add platform specific arch_get_page_table
Based on the patch:
"armv8: caches: Added routine to set non cacheable region"
(sha1: dad17fd510)
it is necessary to add platform specific hook.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-08-19 11:25:50 +02:00
Michal Simek
cb526c1c88 zynqmp: Enable U-Boot run in EL3
Enable Secure IOU setup to enable U-Boot to run in EL3 without
setting from ATF.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-08-19 11:23:13 +02:00
Peter Griffin
8a954eb695 hisilicon: hi6220: Add a hi6220 pinmux driver.
This patch adds basic pinmux support for the hi6220 SoC,
which is found on the hikey board.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
2015-08-12 20:48:00 -04:00
Wu, Josh
633b6ccedf ARM: cache: implement a default weak flush_cache() function
Current many cpu use the same flush_cache() function, which just call
the flush_dcache_range().
So implement a weak flush_cache() for all the cpus to use.

In original weak flush_cache() in arch/arm/lib/cache.c, there has some
code for ARM1136 & ARM926ejs. But in the arch/arm/cpu/arm1136/cpu.c and
arch/arm/cpu/arm926ejs/cache.c, there implements a real flush_cache()
function as well. That means the original code for ARM1136 & ARM926ejs
in weak flush_cache() of arch/arm/lib/cache.c is totally useless.

So in this patch remove such code in flush_cache() and only call
flush_dcache_range().

Signed-off-by: Josh Wu <josh.wu@atmel.com>
2015-08-12 20:47:48 -04:00
Wu, Josh
387871a10e ARM: cache: add an empty stub function for invalidate/flush dcache
Since some driver like ohci, lcd used dcache functions. But some ARM
cpu don't implement the invalidate_dcache_range()/flush_dcache_range()
functions.

To avoid compiling errors this patch adds an weak empty stub function
for all ARM cpu in arch/arm/lib/cache.c.
And ARM cpu still can implemnt its own cache functions on the cpu folder.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-08-12 20:47:47 -04:00