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* Remove arch/${ARCH}/include/asm/errno.hMasahiro Yamada2016-09-23-1/+0
| | | | | | | | | | | | | | Unlike Linux, nothing about errno.h is arch-specific in U-Boot. As you see, all of arch/${ARCH}/include/asm/errno.h is just a wrapper of <asm-generic/errno.h>. Actually, U-Boot does not export headers to user-space, so we just have to care about the consistency in the U-Boot tree. Now all of include directives for <asm/errno.h> are gone. Deprecate <asm/errno.h>. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
* treewide: replace #include <asm/errno.h> with <linux/errno.h>Masahiro Yamada2016-09-23-1/+1
| | | | | | | | | | | Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have the same content. (both just wrap <asm-generic/errno.h>) Replace all include directives for <asm/errno.h> with <linux/errno.h>. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> [trini: Fixup include/clk.] Signed-off-by: Tom Rini <trini@konsulko.com>
* MIPS: Hang if run on a secondary CPUPaul Burton2016-09-21-1/+27
| | | | | | | | | | | | | Some systems are configured such that multiple CPUs begin running from their reset vector following a system reset. If this occurs then U-Boot will be run on multiple CPUs simultaneously, which causes all sorts of issues as the multiple instances of U-Boot clobber each other. Prevent this from happening by simply hanging with an infinite loop if we run on a CPU whose ID, as determined by GlobalNumber or EBase.CPUNum as appropriate, is non-zero. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Fix cache maintenance in relocate_code & simplifyPaul Burton2016-09-21-26/+21
| | | | | | | | | | | | | | | | | | | | | The relocate_code function was handling cache maintenance incorrectly. It copied U-Boot to its new location, flushed the caches & then proceeded to apply relocations & jump to the new code without flushing the caches again. This is problematic as the instruction cache could potentially have already fetched instructions that hadn't had relocs applied. Rework this to perform the flush_cache call using the code in the original copy of U-Boot, after having applied relocations to the new copy of U-Boot. The new U-Boot can then be jumped to safely once that cache flush has been performed. As part of this, since the old U-Boot is used up until after that cache flush, complexity around loading values from the GOT using a jump & link instruction & loads from a table is removed. Instead we can simply load the needed values with PTR_LA fromt the original GOT. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* boston: Introduce support for the MIPS Boston development boardPaul Burton2016-09-21-0/+241
| | | | | | | | | | This patch introduces support for building U-Boot to run on the MIPS Boston development board. This is a board built around an FPGA & an Intel EG20T Platform Controller Hub, used largely as part of the development of new CPUs and their software support. It is essentially the successor to the older MIPS Malta board. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Ensure cache ops complete in mips_cache_resetPaul Burton2016-09-21-0/+2
| | | | | | | | | | Ensure that cache operations complete before returning from mips_cache_reset by placing a completion barrier (sync instruction) before the return. Without this there is no guarantee that the cache ops will complete before any subsequent memory accesses, since they are indexed cache ops & thus not implicitly ordered with memory accesses. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Clear hazard between TagLo writes & cache opsPaul Burton2016-09-21-0/+1
| | | | | | | | | Writing to the coprocessor 0 TagLo registers introduces an execution hazard in that we need that write to complete before any cache instructions execute. Ensure that hazard is cleared by inserting an ehb instruction between the TagLo writes & cache op loop. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Ensure Config.K0=2 applies before any memory accessesPaul Burton2016-09-21-0/+1
| | | | | | | | | | | | During boot we set Config.K0=2 (uncached) such that any accesses to the kseg0 memory region are performed uncached before the caches are initialised. This write to the Config register introduces an execution hazard between it & any following memory accesses (such as the load of _gp), which we need to clear in order to ensure those memory accesses are actually performed uncached. Clear this execution hazard with the insertion of an ehb execution hazard barrier instruction. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Malta: Enable CM & L2 supportPaul Burton2016-09-21-0/+2
| | | | | | | | | Enable support for the MIPS Coherence Manager & L2 caches on the MIPS Malta board, removing the need for us to attempt to bypass the L2 during boot (which would fail with recent CPUs that expose L2 config via the CM anyway). Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Join the coherent domain when a CM is presentPaul Burton2016-09-21-0/+43
| | | | | | | | | | | MIPS Linux expects the bootloader to leave the boot CPU a member of the coherent domain when running on a system with a CM, and we will need to do so if we wish to make use of IOCUs to have cache-coherent DMA in U-Boot (and on some systems there is no choice in that matter). When a CM is present, join the coherent domain after completing cache initialisation. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: L2 cache supportPaul Burton2016-09-21-6/+291
| | | | | | | | | | | | | | | This patch adds support for initialising & maintaining L2 caches on MIPS systems. The L2 cache configuration may be advertised through either coprocessor 0 or the MIPS Coherence Manager depending upon the system, and support for both is included. If the L2 can be bypassed then we bypass it early in boot & initialise the L1 caches first, such that we can start making use of the L1 instruction cache as early as possible. Otherwise we initialise the L2 first such that the L1s have no opportunity to generate access to the uninitialised L2. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Map CM Global Control RegistersPaul Burton2016-09-21-0/+88
| | | | | | | Map the Global Control Registers (GCRs) provided by the MIPS Coherence Manager (CM) in preparation for using some of them in later patches. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Define register names for cache initPaul Burton2016-09-21-19/+23
| | | | | | | | Define names for registers holding cache sizes throughout mips_cache_reset, in order to make the code easier to read & allow for changing register assignments more easily. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: If we don't need DDR for cache init, init cache firstPaul Burton2016-09-21-0/+9
| | | | | | | | | | On systems where cache initialisation doesn't require zeroed memory (ie. systems where CONFIG_SYS_MIPS_CACHE_INIT_RAM_LOAD is not defined) perform cache initialisation prior to lowlevel_init & DDR initialisation. This allows for DDR initialisation code to run cached & thus significantly faster. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Preserve Config implementation-defined bitsPaul Burton2016-09-21-2/+4
| | | | | | | | | | The coprocessor 0 Config register includes 9 implementation defined bits, which in some processors do things like enable write combining or other functionality. We ought not to wipe them to 0 during boot. Rather than doing so, preserve their value & only clear the bits standardised by the MIPS architecture. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Enable use of the instruction cache earlierPaul Burton2016-09-21-8/+13
| | | | | | | | | Enable use of the instruction cache immediately after it has been initialised. This will only take effect if U-Boot was linked to run from kseg0 rather than kseg1, but when this is the case the data cache initialisation code will run cached & thus significantly faster. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Probe cache line sizes once during bootPaul Burton2016-09-21-18/+45
| | | | | | | | | | | Rather than probing the cache line sizes on every call of any cache maintenance function, probe them once during boot & store the values in the global data structure for later use. This will reduce the overhead of the cache maintenance functions, which isn't a big deal yet but becomes more important once L2 caches which may expose their properties via coprocessor 2 or the CM are supported. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: ath79: Use mach_cpu_init instead of arch_cpu_initPaul Burton2016-09-21-1/+1
| | | | | | | | In order to prepare for MIPS arch code making use of arch_cpu_init in a later patch, stop using it from ath79 SoC code & instead use the new mach_cpu_init which is provided for this purpose. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* mips: Add MIPSfpga platform supportZubair Lutfullah Kakakhel2016-09-21-0/+15
| | | | | | | | | | | | | | MIPSfpga is an FPGA based dev platform. In a nutshell, its a microAptiv cpu core with lots of Xilinx IP blocks The FPGA dev board used is the Nexys4DDR board by Digilent. For more information, check the Readme file in board/imgtec/xilfpga Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Reviewed-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
* mips: xilfpga: Add device tree filesZubair Lutfullah Kakakhel2016-09-21-0/+84
| | | | | | | | | | | | Mostly the same as the Kernel upstream device tree file except for - alias for the serial console node - ethernet node as the ethernet stuff isn't upstream on kernel.org yet - uart clock-frequency passed directly in the node Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Reviewed-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
* net: mii: Use spatch to update miiphy_registerJoe Hershberger2016-08-15-8/+17
| | | | | | | Run scripts/coccinelle/net/mdio_register.cocci on the U-Boot code base. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* libfdt: Introduce new ARCH_FIXUP_FDT optionMichal Simek2016-07-31-0/+2
| | | | | | | | | | Add new Kconfig option to disable arch_fixup_fdt() calls for cases where U-Boot shouldn't update memory setup in DTB file. One example of usage of this option is to boot OS with different memory setup than U-Boot use. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Simon Glass <sjg@chromium.org>
* clk: convert API to match reset/mailbox styleStephen Warren2016-06-19-17/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following changes are made to the clock API: * The concept of "clocks" and "peripheral clocks" are unified; each clock provider now implements a single set of clocks. This provides a simpler conceptual interface to clients, and better aligns with device tree clock bindings. * Clocks are now identified with a single "struct clk", rather than requiring clients to store the clock provider device and clock identity values separately. For simple clock consumers, this isolates clients from internal details of the clock API. * clk.h is split so it only contains the client/consumer API, whereas clk-uclass.h contains the provider API. This aligns with the recently added reset and mailbox APIs. * clk_ops .of_xlate(), .request(), and .free() are added so providers can customize these operations if needed. This also aligns with the recently added reset and mailbox APIs. * clk_disable() is added. * All users of the current clock APIs are updated. * Sandbox clock tests are updated to exercise clock lookup via DT, and clock enable/disable. * rkclk_get_clk() is removed and replaced with standard APIs. Buildman shows no clock-related errors for any board for which buildman can download a toolchain. test/py passes for sandbox (which invokes the dm clk test amongst others). Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
* MIPS: Make CONFIG_SYS_DCACHE_LINE_SIZE int, not hexPaul Burton2016-06-10-1/+1
| | | | | | | | | For consistency with the other cache-related Kconfig entries & the values actually set by boards, make CONFIG_SYS_DCACHE_LINE_SIZE an int entry instead of a hex entry. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Fixes: 372286217f05 ("MIPS: Split I & D cache line size config")
* MIPS: Fix invalidate_dcache_range to operate on L1 DcachePaul Burton2016-06-10-1/+1
| | | | | | | | | | Commit fb64cda57998 ("MIPS: Abstract cache op loops with a macro") accidentally modified invalidate_dcache_range to operate on the L1 Icache instead of the Dcache. Fix the cache op used to operate on the Dcache. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Fixes: fb64cda57998 ("MIPS: Abstract cache op loops with a macro")
* mips: ath79: Use AR933X_PLL_SWITCH_CLOCK_CONTROL_REG macro defineWills Wang2016-05-31-1/+2
| | | | | | Add AR933X_PLL_SWITCH_CLOCK_CONTROL_REG define for ar933x chip. Signed-off-by: Wills Wang <wills.wang@live.com>
* mips: ath79: Add support for ungating USB and ethernet on qca953xWills Wang2016-05-31-0/+50
| | | | | | Add code to ungate USB and ethernet controller on qca953x Signed-off-by: Wills Wang <wills.wang@live.com>
* mips: ath79: ap121: Enable ethernetWills Wang2016-05-31-2/+7
| | | | | | | This patch enable network function for ap121 board. Signed-off-by: Wills Wang <wills.wang@live.com> Acked-by: Marek Vasut <marex@denx.de>
* mips: ath79: Rename get_bootstrap into ath79_get_bootstrapWills Wang2016-05-31-28/+15
| | | | | | | | Add a platform prefix for function name in order to make more readable, and move it into ath79.h Signed-off-by: Wills Wang <wills.wang@live.com> Acked-by: Marek Vasut <marex@denx.de>
* MIPS: Abstract cache op loops with a macroPaul Burton2016-05-31-41/+18
| | | | | | | | | | | The various cache maintenance routines perform a number of loops over cache lines. Rather than duplicate the code for performing such loops, abstract it out into a new cache_loop macro which performs an arbitrary number of cache ops on a range of addresses. This reduces duplication in the existing L1 cache maintenance code & will allow for not adding further duplication when introducing L2 cache support. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Split I & D cache line size configPaul Burton2016-05-31-20/+25
| | | | | | | | | | | | Allow L1 Icache & L1 Dcache line size to be specified separately, since there's no architectural mandate that they be the same. The [id]cache_line_size functions are tidied up to take advantage of the fact that the Kconfig entries are always present to simply check them for zero rather than needing to #ifdef on their presence. Signed-off-by: Paul Burton <paul.burton@imgtec.com> [removed CONFIG_SYS_CACHELINE_SIZE in include/configs/pic32mzdask.h] Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
* MIPS: Move cache sizes to KconfigPaul Burton2016-05-31-4/+32
| | | | | | | | | | | | Move details of the L1 cache line sizes & total sizes into Kconfig, defaulting to 0. A new CONFIG_SYS_CACHE_SIZE_AUTO Kconfig entry is introduced to allow platforms to select auto-detection of cache sizes, and it defaults to being enabled if none of the cache sizes are set by the configuration (ie. sizes are all the default 0), and code is adjusted to #ifdef on that rather than on the definition of the sizes (which will always be defined even if 0). Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: remove dead code from asm/u-boot-mips.hDaniel Schwierzeck2016-05-31-18/+3
| | | | | | | | Those wrappers for linker symbols were once used in the MIPS specific board.c implementation. Since the migration to generic board.c, those wrappers are dead code and can be removed. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
* MIPS: add tune for MIPS 34kcDaniel Schwierzeck2016-05-31-0/+4
| | | | | | Add tune Kconfig option for MIPS 34kc. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
* MIPS: provide a default u-boot-spl.ldsDaniel Schwierzeck2016-05-31-2/+93
| | | | | | | | | | | | Provide a default linker script for SPL binaries. Start address and size of text section and BSS section are configurable. All sections are arranged in a way that only relevant sections are kept in the code section for maximum size reduction. All other sections are kept but moved outside the code section to help with debugging. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Acked-by: Marek Vasut <marex@denx.de>
* malta: Allow MIPS64 buildsPaul Burton2016-05-31-0/+3
| | | | | | | | Both real Malta boards & emulators that mimic Malta (eg. QEMU) can support MIPS64 CPUs. Allow MIPS64 builds of U-Boot for such boards, which enables the user to make use of the whole 64 bit address space. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Use CPHYSADDR to implement mips32 virt_to_physPaul Burton2016-05-31-4/+1
| | | | | | | | | | | | | | | | | | Use CPHYSADDR to implement the virt_to_phys function for converting from a virtual to a physical address for MIPS32, much as is already done for MIPS64. This allows for virt_to_phys to work regardless of whether the address being translated is in kseg0 or kseg1, unlike the previous subtraction based approach which only worked for addresses in kseg0. This allows for drivers to provide an address to virt_to_phys without needing to manually ensure that kseg1 addresses are converted to equivalent kseg0 addresses first. This patch is equivalent to this Linux patch currently waiting to be reviewed & merged: https://patchwork.linux-mips.org/patch/12564/ Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* mips: Drop unused code in u-boot.hSimon Glass2016-05-27-16/+0
| | | | | | | Since generic board init is enabled, this is not used. Drop it. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
* mips: ath79: ar933x: Avoid warning with gcc5Wills Wang2016-05-26-0/+2
| | | | | | | | GCC 5.3 report a warning: 'upper' and 'lower' may be used uninitialized in this function [-Wmaybe-uninitialized]. Compiler might need explicit initializer. Signed-off-by: Wills Wang <wills.wang@live.com>
* mips: ath79: ar933x: Fix ethernet PHY mismatchWills Wang2016-05-26-1/+3
| | | | | | | | We need reset the Ethernet Switch analog part before operation, or the build-in Ethernet PHY don't work. Signed-off-by: Wills Wang <wills.wang@live.com> Acked-by: Marek Vasut <marex@denx.de>
* mips: Drop JZ4740 remnantsMarek Vasut2016-05-26-1158/+0
| | | | | | | | Remove the remnants of JZ4740 support. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Paul Burton <paul.burton@imgtec.com>
* mips: Allow overriding start.S in SPLMarek Vasut2016-05-26-0/+6
| | | | | | | | | | Certain chips, like the JZ47xx, have extreme size constraints on the SPL size and require custom start.S . Allow overriding the start.S the same way ARM MXS does it. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Paul Burton <paul.burton@imgtec.com>
* malta: Use device model & tree for UARTPaul Burton2016-05-26-0/+37
| | | | | | | | | | | Make use of device model & device tree to probe the UART driver. This is the initial step in bringing Malta up to date with driver model, and allows for cleaner handling of the different I/O addresses for different system controllers by specifying the ISA bus address instead of a translated memory address. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
* malta: Support MIPS32r6 configurationsPaul Burton2016-05-21-0/+1
| | | | | | | | Both real Malta boards & QEMU's Malta emulation can feature MIPS32r6 CPUs. Allow building U-Boot for such systems by selecting CONFIG_SUPPORTS_CPU_MIPS32_R6 for Malta. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Support for targetting MIPSr6Paul Burton2016-05-21-6/+30
| | | | | | | | | | | Add support for targetting MIPS32r6 & MIPS64r6 systems, in the same way that we currently select release 1 or release 2 targets. MIPSr6 is not entirely backwards compatible with earlier releases of the architecture. Some instructions are encoded differently, some are removed, some are reused, so it is not practical to run U-Boot built for earlier revisions on a MIPSr6 system. Update their Kconfig help text to reflect that. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Simplify CONFIG_SYS_CPU valuesPaul Burton2016-05-21-2/+2
| | | | | | | | | | | | Rather than having the values for CONFIG_SYS_CPU depend upon each architecture revision, have them depend upon the more general CONFIG_CPU_MIPS32 & CONFIG_CPU_MIPS64 which in turn depend upon the architecture revisions. This is done in preparation for adding MIPSr6 support, which would otherwise need to introduce new cases here. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* MIPS: Use unchecked immediate addition/subtractionPaul Burton2016-05-21-11/+13
| | | | | | | | | | | | In MIPS assembly there have historically been 2 variants of immediate addition - the standard "addi" which traps if an overflow occurs, and the unchecked "addiu" which does not trap on overflow. In release 6 of the MIPS architecture the trapping variants of immediate addition & subtraction have been removed. In preparation for supporting MIPSr6, stop using the trapping instructions from assembly & switch to their unchecked variants. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
* mips: ath79: Add support for TPLink WDR4300Marek Vasut2016-05-21-0/+59
| | | | | | | | | | Add support for the TPLink WDR4300 router, which is based on the AR9344 MIPS 74Kc CPU and has 128 MiB of RAM. The USB is supported on this system as well. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Wills Wang <wills.wang@live.com>
* mips: ath79: Add AR934x supportMarek Vasut2016-05-21-1/+683
| | | | | | | | | | Add support for the Atheros AR934x WiSoCs. This patchs adds complete system init, including PLL and DRAM init, both of which happen from full C environment, since the AR934x has proper SRAM. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Wills Wang <wills.wang@live.com>
* mips: ath79: Add support for ungating ethernet on ar933x and ar934xMarek Vasut2016-05-21-0/+80
| | | | | | | | Add code to ungate the ethernet controller on ar933x and ar934x . Signed-off-by: Marek Vasut <marex@denx.de> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Wills Wang <wills.wang@live.com>
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