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2015-01-30MIPS: unify CPU code in arch/mips/cpu/Daniel Schwierzeck
Unify and move code in arch/mips/cpu/mips[32|64]/ to arch/mips/cpu/. The CPU specific config.mk files need to remain until CONFIG_STANDALONE_LOAD_ADDR is converted to a global Kconfig symbol. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-30MIPS: move au1x00 SoC code to arch/mips/mach-au1x00Daniel Schwierzeck
Move all au1x00 code out of arch/mips/cpu/mips32 to allow unification of CPU code in a later patch. The reorganization of the SoC specific header files will be done in a later patch series. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Paul Burton <paul.burton@imgtec.com>
2015-01-30MIPS: handle mips64 ST0_KX bit in mips32 start.SPaul Burton
In preparation for sharing a single copy of start.S between mips32 & mips64, handle setting the KX bit of the cop0 Status register when the mips32 start.S is built for mips64. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-30MIPS: handle mips64 relocs in mips32 start.SPaul Burton
In preparation for sharing a single copy of start.S between mips32 & mips64, handle mips64 relocations in the mips32 start.S when built for mips64. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-30MIPS: use asm.h macros in mips32 start.SPaul Burton
Where the mips32 & mips64 implementations of start.S differ in terms of access sizes & offsets, use the appropriate macros from asm.h to abstract those differences away. This is in preparation for sharing a single copy of start.S between mips32 & mips64. The exception to this is loads of immediates to be written to the cop0 Config register, which is a 32bit register on mips64 and therefore constants written to it can be loaded as such. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-29MIPS: unify cache initialization codePaul Burton
The mips32 & mips64 cache initialization code differs only in that the mips32 code supports reading the cache size from coprocessor 0 registers at runtime. Move the more developed mips32 version to a common arch/mips/lib/cache_init.S & remove the now-redundant mips64 version in order to reduce duplication. The temporary registers used are shuffled slightly in order to work for both mips32 & mips64 builds. The RA register is defined differently to suit mips32 & mips64, but will be removed by a later commit in the series after further cleanup. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-29MIPS: unify cache maintenance functionsPaul Burton
Move the more developed mips32 version of the cache maintenance functions to a common arch/mips/lib/cache.c, in order to reduce duplication between mips32 & mips64. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-29MIPS: avoid .set ISA for cache operationsPaul Burton
As a step towards unifying the cache maintenance code for mips32 & mips64 CPUs, stop using ".set <ISA>" directives in the more developed mips32 version of the code. Instead, when present make use of the GCC builtin for emitting a cache instruction. When not present, simply don't bother with the .set directives since U-boot always builds with -march=mips32 or higher anyway. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-21MIPS: add support for pre-relocation mallocDaniel Schwierzeck
Implement MIPS specific setup of the gd_t structure to support pre-relocation malloc. If CONFIG_SYS_MALLOC_F_LEN is specified, a memory area will be reserved after the initial stack area and the gd->malloc_base pointer will be initialized. After this patch the new driver model can be used on MIPS. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-21MIPS: add support for CONFIG_SYS_INIT_SP_ADDRDaniel Schwierzeck
Support the existing config option CONFIG_SYS_INIT_SP_ADDR on MIPS. This allows to move the initial stack to other places than the beginning of RAM. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-01-21MIPS: use common code from lib/time.cThomas Langer
The common code just needs the C0_COUNT as free running counter, without the need of writing and checking C0_COMPARE. The function get_tbclk() is still implemented here instead of changing all places of CONFIG_SYS_MIPS_TIMER_FREQ to CONFIG_SYS_TIMER_RATE. The change was tested on a MIPS32 system, but as the MIPS64 code was/is the same, this should be no problem. Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
2014-11-27MIPS: fix setup of initial stack frameDaniel Schwierzeck
To get correct stack walking and backtrace functionality in gdb, registers fp and ra should be initialized before calling board_init_f or board_init_r. Thus allocating stack space and zeroing it as it is currently done in board.c becomes obsolete. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2014-11-23kbuild: use SoC-specific CONFIG to descend into SoC directoryMasahiro Yamada
Use "obj-$(CONFIG_FOO) += foo/" where it is possible. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-11-23kbuild: Descend into SOC directory from CPU directoryMasahiro Yamada
Some CPUs of some architectures have SOC directories. At present, the build system directly descends into SOC directories from the top Makefile, but it should generally descend into each directory from its parent directory. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-11-20include: move various macros to include/linux/kernel.hMasahiro Yamada
U-Boot has imported various utility macros from Linux scattering them to various places without consistency. In include/common.h are min, max, min3, max3, ARRAY_SIZE, ALIGN, container_of, DIV_ROUND_UP, etc. In include/linux/compat.h are min_t, max_t, round_up, round_down, etc. We also have duplicated defines of min_t in some *.c files. Moreover, we are suffering from too cluttered include/common.h. This commit moves various macros that originate in include/linux/kernel.h of Linux to their original position. Note: This commit simply moves the macros; the macros roundup, min, max, min2, max3, ARRAY_SIZE are different from those of Linux at this point. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-11-01MIPS: refactor setting of compiler optionsDaniel Schwierzeck
Refactor and unify all compiler settings in arch/mips/config.mk. Also add tune flags for each supported CPU type. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2014-04-20MIPS: drop incaip boardDaniel Schwierzeck
This is dead hardware and no one is interested in making the necessary changes for upcoming features like generic board or driver model. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Wolfgang Denk <wd@denx.de>
2014-04-20MIPS: stub interrupt_init functionPaul Burton
interrupt_init is called unconditionally by the generic board code. Define a stub for it on MIPS like the enable & disable functions. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-03-10usb: create common header virtual root hub descriptorsStephen Warren
Many USB host controller drivers contain almost identical copies of the same virtual root hub descriptors. Put these into a common file to avoid duplication. Note that there were some very minor differences between the descriptors in the various files, such as: - USB 1.0 vs. USB 1.1 - Manufacturer/Device ID - Max packet size - String content I assume these aren't relevant. Cc: Thomas Lange <thomas@corelatus.se> Cc: Shinya Kuribayashi <skuribay@pobox.com> Cc: Gary Jennejohn <garyj@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Eric Millbrandt <emillbrandt@coldhaus.com> Cc: Pierre Aubert <p.aubert@staubli.com> Cc: Stefan Roese <sr@denx.de> Cc: Daniel Hellstrom <daniel@gaisler.com> Cc: Denis Peter <d.peter@mpl.ch> Cc: Rodolfo Giometti <giometti@linux.it> Cc: Zhang Wei <wei.zhang@freescale.com> Cc: Mateusz Zalega <m.zalega@samsung.com> Cc: Remy Bohmer <linux@bohmer.net> Cc: Markus Klotzbuecher <mk@denx.de> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Gary Jennejohn <garyj@denx.de> Cc: C Nauman <cnauman@diagraph.com> Cc: David Müller <d.mueller@elsoft.ch> Cc: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Cc: Thomas Abraham <t-abraham@ti.com> Cc: Tom Rini <trini@ti.com> Cc: Andrew Murray <amurray@embedded-bits.co.uk> Cc: Matej Frančeškin <matej.franceskin@comtrade.com> Cc: Cliff Cai <cliff.cai@analog.com> Cc: Bryan Wu <cooloney@gmail.com> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2014-03-07mips: move CONFIG_MIPS{32, 64} definition to config.mkMasahiro Yamada
All mips32 boards define CONFIG_MIPS32 in config headers except malta boards which define it in boards.cfg. We can consolidate them by defining it in arch/mips/cpu/mips32/config.mk. CONFIG_MIPS64 definition can be moved to arch/mips/cpu/mips64/config.mk as well. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Acked-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2014-03-07config.mk: specify the exact path to standalone linker scriptMasahiro Yamada
We want to change the build system to include config.mk only from ./Makefile and spl/Makefile. We must prepare for that in this commit. $(src) is a moving target and not handy for our purpose. We must replace it with a fixed path. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-19kbuild: change out-of-tree buildMasahiro Yamada
This commit changes the working directory where the build process occurs. Before this commit, build process occurred under the source tree for both in-tree and out-of-tree build. That's why we needed to add $(obj) prefix to all generated files in makefiles like follows: $(obj)u-boot.bin: $(obj)u-boot Here, $(obj) is empty for in-tree build, whereas it points to the output directory for out-of-tree build. And our old build system changes the current working directory with "make -C <sub-dir>" syntax when descending into the sub-directories. On the other hand, Kbuild uses a different idea to handle out-of-tree build and directory descending. The build process of Kbuild always occurs under the output tree. When "O=dir/to/store/output/files" is given, the build system changes the current working directory to that directory and restarts the make. Kbuild uses "make -f $(srctree)/scripts/Makefile.build obj=<sub-dir>" syntax for descending into sub-directories. (We can write it like "make $(obj)=<sub-dir>" with a shorthand.) This means the current working directory is always the top of the output directory. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Tested-by: Gerhard Sittig <gsi@denx.de>
2013-11-09qemu-malta: rename to just "malta"Paul Burton
This is in preparation for adapting this board to function correctly on a physical MIPS Malta board. The board is moved into an "imgtec" vendor directory at the same time in order to ready us for any other boards supported by Imagination in the future. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2013-11-09mips32: detect L1 cache sizes if they're not definedPaul Burton
For boards such as the MIPS Malta with an FPGA core card it is desirable to be able to detect the L1 cache sizes at runtime, since they are not dependant upon the board but on the FPGA bitstream in use. This patch performs that detection when the CONFIG_SYS_[DI]CACHE_SIZE macros are not defined by the board configuration. In cases where the sizes are detected this patch also removes the restriction that the I-cache & D-cache line sizes must be the same, as this is not necessarily true. If the cache sizes are defined by a configuration then they will be hardcoded as before, so this patch will not add overhead to such boards. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2013-10-31mips: convert makefiles to Kbuild styleMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-10-20usb: add enum usb_init_type parameter to usb_lowlevel_initTroy Kisky
This parameter will later be used to verify OTG ports. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
2013-10-14Coding Style cleanup: remove trailing white spaceWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-07-24MIPS: mips32/cache.S: use v1 register for indirect function callsGabor Juhos
Synchronize the code with mips64/cache.S, in order to allow further unifications. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-07-24MIPS: mips32/cache.S: store cache line size in t8 registerGabor Juhos
Synchronize the code with mips64/cache.S, in order to allow further unifications. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-07-24MIPS: mips32/cache.S: save return address in t9 registerGabor Juhos
Synchronize the code with mips64/cache.S, in order to allow further unifications. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-07-24MIPS: mips32/start.S: rework relocation info checkGabor Juhos
Make it similar to the code in mips64/start.S, in order to allow further unifications. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-07-24MIPS: mips32/start.S: use t8 register for dynamic relocationGabor Juhos
Synchronize the code with mips64/start.S, in order to allow further unifications. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-07-24MIPS: mips32/cache.S: remove superfluous register assignmentGabor Juhos
The t4 register already holds the cache line size, and the value of the register is not changed in mips_init_icache. Get the cache line size value from t4 for mips_init_dcache as well and remove the superfluous assignment of t5 register. Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
2013-07-24MIPS: mips32/time.c: fix checkpatch errors/warningsGabor Juhos
Checking mips32/time.c with checkpatch.pl shows this: arch/mips/cpu/mips32/time.c:30: WARNING: line over 80 characters arch/mips/cpu/mips32/time.c:57: ERROR: return is not a function, parentheses are not required total: 1 errors, 1 warnings, 0 checks, 85 lines checked Fix the code to make checkpatch.pl happy. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-07-24MIPS: start.S: emulate REVISION register for qemu-maltaGabor Juhos
On the origial Malta boards the REVISION register is accessible at the 0x1fc00010 address. The contents of this register gives information about the revision of the Malta and Core Boards. This register is used by the Linux kernel to identify the actual board it is running on. However the register is not emulated properly by Qemu, so put a hardcoded value into the flash to make Linux work. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-02-12MIPS: add dynamic relocation supportGabor Juhos
The code handles relocation entries with the following relocation types only: mips32: R_MIPS_REL32 mips64: R_MIPS_REL+R_MIPS_64 xburst: R_MIPS_REL32 Other relocation entries are skipped without processing. The code must be extended if other relocation types must be supported. Add -pie to LDFLAGS_FINAL to generate the .rel.dyn fixup table, which will be applied to the relocated image before transferring control to it. The CONFIG_NEEDS_MANUAL_RELOC is not needed after the patch, so remove that as well. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2013-02-12MIPS: start.S: use symbol __image_copy_end for U-Boot image relocationDaniel Schwierzeck
Use the newly introduced symbol __image_copy_end as end address for relocation of U-Boot image. This is needed for dynamic relocation added in later patches. This patch obsoletes the symbols uboot_end and uboot_end_data which are removed. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2013-02-12MIPS: start.S: optimize BSS initializationDaniel Schwierzeck
Get the start and end address for clearing BSS from the newly introduced symbols __bss_start and __bss_end. After GOT is relocated, those symbols are already pointing to the correct addresses. Also optimize the loop by moving the address incrementation to the delay slot to avoid the initial sub instruction. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2013-02-12MIPS: start.S: unify and simplify reset vector handlingDaniel Schwierzeck
Adopt reset vector handling from Yamon. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2013-02-12MIPS: start.S: remove obsolete 64 bit handling in setup_c0_statusDaniel Schwierzeck
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2013-01-30MIPS: remove OUTPUT_FORMAT from linker scriptsGabor Juhos
The OUTPUT_FORMAT command in linker scripts was always misused due to some endianess and toolchain problems. Use GCC flags to ensure proper output format, and get rid of the OUTPUT_FORMAT commands in the board specific u-boot.lds files. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com> Cc: Stefan Roese <sr@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Xiangfu Liu <xiangfu@openmobilefree.net>
2013-01-30MIPS: simplify relocated _G_O_T_ address calculationGabor Juhos
The difference between the address of the original and the relocated _GLOBAL_OFFSET_TABLE_ is always the same as the relocation offset. The relocation offset is already computed and it is available in the 's1/t6' register. Use that to adjust the relocated _G_O_T_ address, instead of calculating the offset again from the _gp value. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com> Cc: Xiangfu Liu <xiangfu@openmobilefree.net>
2013-01-27MIPS: start.S: don't save flush_cache parameters in advanceGabor Juhos
Saving the parameters in advance unnecessarily complicates the code. The destination address is already saved in the 's2' register, and that register is not clobbered by the copy loop. The size of the copied data can be computed after the copy loop is done. Change the code to compute the size parameter right before calling flush_cache, and set the destination address parameter in the delay slot of the actuall call. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-01-27MIPS: start.S: simplify relocation offset calculationGabor Juhos
The current code uses four instructions and a temporary register to calculate the relocation offset and to adjust the gp register. The relocation offset can be calculated directly from the CONFIG_SYS_MONITOR_BASE constant and from the destination address. The resulting offset can be used to adjust the gp pointer. This approach makes the code a bit simpler because it needs two instructions only. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-01-27MIPS: start.S: save reused arguments earlier in relocate_codeGabor Juhos
Save the reused parameters at the beginning of the 'relocate_code' function. This makes the function a bit more readable. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-01-27MIPS: start.S: set sp register directlyGabor Juhos
The current code uses two instructions to load the stack pointer into the 'sp' register. This results in the following assembly code: 468: 3c088040 lui t0,0x8040 46c: 251d0000 addiu sp,t0,0 The first instuction loads the stack pointer into the 't0' register then the value of the 'sp' register is computed by adding zero to the value of the 't0' register. The same issue present on the 64-bit version as well: 56c: 3c0c8040 lui t0,0x8040 570: 659d0000 daddiu sp,t0,0 Change the code to load the stack pointer directly into the 'sp' register. The generated code is functionally equivalent to the previous version but it is simpler. 32-bit: 468: 3c1d8040 lui sp,0x8040 64-bit: 56c: 3c1d8040 lui sp,0x8040 Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-01-27MIPS: start.S: fix boundary check in relocate_codeGabor Juhos
The loop code copies more data with one than necessary due to the 'ble' instuction. Use the 'blt' instruction instead to fix that. Due to the lack of suitable hardware the Xburst specific code is compile tested only. However the change is quite obvious. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-01-22MIPS: start{, 64}.S: fill branch delay slots with NOP instructionsGabor Juhos
The romReserved and romExcHandle handlers are accessed by a branch instruction however the delay slots of those instructions are not filled. Because the start.S uses the 'noreorder' directive, the assembler will not fill the delay slots either, and leads to the following assembly code: 0000056c <romReserved>: 56c: 1000ffff b 56c <romReserved> 00000570 <romExcHandle>: 570: 1000ffff b 570 <romExcHandle> In the resulting code, the second branch instruction is placed into the delay slot of the first branch instruction, which is not allowed on the MIPS architecture. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2012-11-27Merge branch 'master' of git://git.denx.de/u-boot-mipsTom Rini
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