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path: root/arch/microblaze/cpu/start.S
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2022-10-31Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASESimon Glass
The current name is inconsistent with SPL which uses CONFIG_SPL_TEXT_BASE and this makes it imposible to use CONFIG_VAL(). Rename it to resolve this problem. Signed-off-by: Simon Glass <sjg@chromium.org>
2022-06-27Merge tag 'xilinx-for-v2022.10' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-microblaze into next Xilinx changes for v2022.10 cpu: - Add driver for microblaze cpu net: - Add support for DM_ETH_PHY to AXI emac and emaclite xilinx: - Switch platforms to DM_ETH_PHY - DT chagnes in ZynqMP and Zynq - Enable support for SquashFS zynqmp: - Add support for KR260 boards - Move BSS from address 0 - Move platform identification from board code to soc driver - Improve zynqmp_psu_init_minimize versal: - Enable loading app at EL1 serial: - Setup default address and clock rates for DEBUG uarts pinctrl: - Add support for tri state and output enable properties relocate-rela: - Clean relocate-rela implementation for ARM64 - Add support for Microblaze microblaze: - Add support for runtime relocation - Rework cache handling (wiring, Kconfig) based on cpuinfo - Remove interrupt support timer: - Extract axi timer driver from Microblaze to generic location
2022-06-24microblaze: cache: introduce cpuinfo structureOvidiu Panait
Introduce a minimal cpuinfo structure to hold cache related info. The instruction/data cache size and cache line size are initialized early in the boot to default Kconfig values. They will be overwritten with data from PVR/dtb if the microblaze UCLASS_CPU driver is enabled. The cpuinfo struct was placed in global_data to allow the microblaze UCLASS_CPU driver to also run before relocation (initialized global data should be read-only before relocation). gd_cpuinfo() helper macro was added to avoid volatile "-Wdiscarded-qualifiers" warnings when using the pointer directly. Signed-off-by: Ovidiu Panait <ovpanait@gmail.com> Link: https://lore.kernel.org/r/20220531181435.3473549-10-ovpanait@gmail.com Signed-off-by: Michal Simek <michal.simek@amd.com> (s/bralid/brlid/)
2022-06-24microblaze: cache: introduce flush_cache_all()Ovidiu Panait
All flush_cache() calls in microblaze code are supposed to flush the entire instruction and data caches, so introduce flush_cache_all() helper to handle this. Also, provide implementations for flush_dcache_all() and invalidate_icache_all() so that icache and dcache u-boot commands can work. Signed-off-by: Ovidiu Panait <ovpanait@gmail.com> Link: https://lore.kernel.org/r/20220531181435.3473549-9-ovpanait@gmail.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-06-24microblaze: cache: introduce Kconfig options for icache/dcache sizesOvidiu Panait
Replace XILINX_DCACHE_BYTE_SIZE macro with two Kconfig symbols for instruction and data caches sizes, respectively: CONFIG_XILINX_MICROBLAZE0_ICACHE_SIZE CONFIG_XILINX_MICROBLAZE0_DCACHE_SIZE Also, get rid of the hardcoded value in icache_disable(). Signed-off-by: Ovidiu Panait <ovpanait@gmail.com> Link: https://lore.kernel.org/r/20220531181435.3473549-8-ovpanait@gmail.com Signed-off-by: Michal Simek <michal.simek@amd.com> (s/bralid/brlid/g)
2022-06-24microblaze: start.S: remove unused codeOvidiu Panait
in16/out16 routines seem to not be used anywhere in microblaze code, so remove them. Signed-off-by: Ovidiu Panait <ovpanait@gmail.com> Link: https://lore.kernel.org/r/20220531181435.3473549-3-ovpanait@gmail.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-06-24microblaze: Add support for run time relocationMichal Simek
Microblaze is using NEEDS_MANUAL_RELOC from the beginnging. This is causing issues with function pointer arrays which need to be updated manually after relocation. Building code with -fPIC and linking with -pic will remove this limitation and there is no longer need to run manual update. By default still old option is enabled but by disabling NEEDS_MANUAL_RELOC code will be compiled for full relocation. The patch does couple of things which are connected to each other. - Define STATIC_RELA dependency to call relocate-rela to fill sections. - REMAKE_ELF was already enabled but u-boot file can't be used because sections are empty. relocate-rela will fill them and output file is u-boot.elf which should be used. - Add support for full relocation (u-boot.elf) - Add support for early relocation when u-boot.bin is loaded to different address then CONFIG_SYS_TEXT_BASE - Add rela.dyn and dynsym sections Disabling NEEDS_MANUAL_RELOC U-Boot size increased by 10% of it's original size (550kB to 608kB). Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/a845670b34925859b2e321875f7588a29f6655f9.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Create SYM_ADDR macro to deal with symbolsMichal Simek
Symbol handling depends on compilation flags. Right now manual relocation is used that's why symbols can be referenced just by name and there is no need to find them out. But when position independent code (PIC) is used symbols need to be described differently. That's why having one macro change is easier than changing the whole code. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/d704e9a267c8b536452fb999111dbfbc9d652be5.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Add comment about reset locationMichal Simek
Better to add comment to explain why reset vector points all the time to origin U-Boot location. If reset happens U-Boot should start from it's origin location. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/5ca6341b7487708247fe2948d7e496ea6f7c2e02.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Remove _start symbol handling at U-Boot startMichal Simek
Right now U-Boot runs all the time from the same address where it is loaded but going to full relocation code starting address doesn't need to be fixed and can be simply discovered from reading PC register. That's why use r20 to get PC address and subtract offset from the beginning to get starting address. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/044b727c33dfbe662f68512d0da0775a4805f360.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Remove code around r20 in relocate_code()Michal Simek
r20 is not used that's why remove logic around it. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/1b32bab5c050d099b2f6d49bc4896322ed03d788.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Optimize register usage in relocate_codeMichal Simek
There are additional operations which can be done simpler that's why improve logic around relocation address r7 handling and _start symbol. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/c8b60f72f1605c2ba6b4b7be1893d7e6ec3d8597.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Change stack protection address to new stack addressMichal Simek
SLR low address is still setup to 0 that's why only high limit should be updated. STACK_SIZE macro is present and could be possible used for low address alignment but it is not done by this patch. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/c00cb843df848703b760a65934ed3ce31fafcf19.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Separate code end substractionMichal Simek
Follow up patch will convert symbol handling that's why it is necessary to separate logic around symbols to special instruction. It adds 4B for new instruction but it is worth to do it to have code ready for for full relocation. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/030863fa9a9c1ca0a9b082fe498522da09189fbc.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Remove CONFIG_TEXT_BASE from codeMichal Simek
Use symbol instead macro to find where U-Boot starts. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/d5d4c201bee6171e85b47783d916387d84db0456.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Fix early stack allocationMichal Simek
CONFIG_SYS_INIT_SP_OFFSET macro place stack to TEXT_BASE - SYS_MALLOC_F_LEN but there is no reason to do it now because board_init_f_alloc_reserve() returns exact location where stack should be. That's why stack location is calculated at run time and there is no need to hardcode it via macro. This change will help with placing U-Boot to any address. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/e9aee69646e022fd8a96cbee2d2a07ab81fb6e05.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Fix stack protection behaviorMichal Simek
When U-Boot starts stack protection can be already enabled that's why setup the lowest possible SLR value which is address 0. And the highest possible stack in front of U-Boot. That's why you should never load U-Boot to the beginning of DDR. There must be some space reserved. Code is using this location for early malloc space, early global data and stack. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/86b9748bad12142659804d6381bc6bbf20be44f1.1655299267.git.michal.simek@amd.com
2022-06-24microblaze: Switch absolute branches to relativeMichal Simek
There is no reason to use absolute branches and use just relative. This change helps with moving binary to different location and start it from there. Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/83a5103b85c1c2220cd3ab4d5365169c6660e40a.1655299267.git.michal.simek@amd.com
2022-06-06Convert CONFIG_SPL_STACK to KconfigTom Rini
This converts the following to Kconfig: CONFIG_SPL_STACK Signed-off-by: Tom Rini <trini@konsulko.com>
2022-01-05microblaze: start.S: add support for configurable vector base addressOvidiu Panait
Current code assumes that the vector base address is always at 0x0. However, this value is configurable for MicroBlaze, so update the __setup_exceptions routine to work with any vector base address. The r4 register is reserved for the vector base address inside __setup_exceptions and the function prologe/epilogue are also updated to save and restore r4. Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Link: https://lore.kernel.org/r/20211130163358.2531677-9-ovidiu.panait@windriver.com Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2022-01-05microblaze: migrate CONFIG_SYS_USR_EXCEP to KconfigOvidiu Panait
Migrate CONFIG_SYS_USR_EXCEP to Kconfig. Also, rename it to XILINX_MICROBLAZE0_USR_EXCEP in order to match the naming convention of microblaze-generic Kconfig options. Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Link: https://lore.kernel.org/r/20211130163358.2531677-7-ovidiu.panait@windriver.com Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2022-01-05microblaze: drop CONFIG_SYS_RESET_ADDRESS macroOvidiu Panait
Microblaze is one the last two users of the CONFIG_SYS_RESET_ADDRESS macro (the other is arch/powerpc/cpu/mpc8xx/cpu.c, but the macro is not defined anywhere in powerpc code, so it should be removed there too). Replace CONFIG_SYS_RESET_ADDRESS usage in start.S with CONFIG_SYS_TEXT_BASE. If the reset address should really be user-configurable, a new Kconfig option could be added. Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Link: https://lore.kernel.org/r/20211130163358.2531677-6-ovidiu.panait@windriver.com Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2022-01-05microblaze: start.S: use stack space as scratch memory for endian offsetOvidiu Panait
To simpify the code, use stack space as scratch memory for endian offset calculation, rather than saving/restoring the first unused MB vector. Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Link: https://lore.kernel.org/r/20211130163358.2531677-5-ovidiu.panait@windriver.com Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2022-01-05microblaze: u-boot.lds: replace __end symbol with _endOvidiu Panait
board_fdt_blob_setup() uses the _end symbol to find the dtb in the non-spl case. In order to allow microblaze builds to compile successfully with CONFIG_OF_SEPARATE, the _end symbol must be defined. Align microblaze with the other architectures and use _end symbol rather than __end to mark the end of the u-boot binary. Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Link: https://lore.kernel.org/r/20211130163358.2531677-2-ovidiu.panait@windriver.com Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-10-27microblaze: start.S: Use board_init_f_alloc/init in early initOvidiu Panait
Implement early init by calling generic board_init_f_alloc_reserve and board_init_f_init_reserve functions: * drop SYS_MALLOC_F_LEN related code, as allocation and gd->malloc_base assignment are taken care of by the generic functions * drop _gd logic Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
2020-10-27microblaze: start.S: Factor out exception setup code to __setup_exceptionsOvidiu Panait
Currently, the exceptions setup code is duplicated in pre-relocation and post-relocation init. Factor out this code to __setup_exceptions asm routine to get rid of the duplication. __setup_exceptions is called with a relocation offset parameter (r5) which is set to zero for pre-reloc init and gd->reloc_off for post-reloc exception setup. Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2019-10-24microblaze: Fix tab indentation in start.SMichal Simek
Use tab instead of spaces. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-07-27microblaze: spl: configure SYS_MALLOC_F_LEN independently for SPL and full ↵Andy Yan
U-Boot Some platforms have very limited SRAM to run SPL code, so there may not be the same amount space for a malloc pool before relocation in the SPL stage as the normal U-Boot stage. Make SPL and (the full) U-Boot stage use independent SYS_MALLOC_F_LEN, so the size of pre-relocation malloc pool can be configured memory space independently. Signed-off-by: Andy Yan <andy.yan@rock-chips.com> Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> [fixed up commit-message:] Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-02-10microblaze: Fix endif macro commandMichal Simek
Use correct name in endif comment. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-01-27microblaze: Wire-up debug_uart in asmMichal Simek
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-01-13Fix board init code to respect the C runtime environmentAlbert ARIBAUD
board_init_f_mem() alters the C runtime environment's stack it is actually already using. This is not a valid behaviour within a C runtime environment. Split board_init_f_mem into C functions which do not alter their own stack and always behave properly with respect to their C runtime environment. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net> Acked-by: Thomas Chou <thomas@wytron.com.tw>
2015-10-24microblaze: Add a TODO to call board_init_f_mem()Simon Glass
This C function should be used to do the early memory layout and init. This is beyond my powers, so just add a TODO for the maintainer. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Michal Simek <michal.simek@xilinx.com>
2015-02-09microblaze: spl: Do not call mem_malloc_init and use early allocMichal Simek
This patch has some parts connected together: - Use _gd in bss section which is automatically cleared Location at SPL_MALLOC_END wasn't cleared at all - Use MALLOC_F_LEN(early alloc) instead of FULL MALLOC (mem_malloc_init is not called at all) - Simplify malloc and stack init. At the end of SPL addr is malloc area and below is stack Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-02-09microblaze: Add support for CONFIG_SYS_MALLOC_F_LENMichal Simek
Create space for dm_init where calloc is called and malloc_base has to be initialized. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-02-09microblaze: Do not use CONFIG_SYS_GENERIC_GLOBAL_DATAMichal Simek
Because it is not compatible with DM where malloc_base has to be available early and init has to be done in ASM. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-02-09microblaze: Speedup code copyMichal Simek
Remove one instruction in the loop which speedup code copying. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-02-09microblaze: Move architecture to use generic board initMichal Simek
Compile code with -fPIC to get GOT. Do not build SPL with fPIC because it increasing SPL size for nothing. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-02-09microblaze: Fix gd_t address which is placed at the end of BRAMMichal Simek
Setup gd from ASM to be availalbe for board_init_r. Setting it up in spl_board_init is too late when MALLOC is used. Space for gd is located behind MALLOC area at the end of BRAM. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-02-09microblaze: Remove unused asm labelMichal Simek
It is not used at all that's why remove it. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-01-21microblaze: Support stack protection featureMichal Simek
Ensure that stack didn't rewrite important part of u-boot. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-01-21microblaze: Enable hardware exception by defaultMichal Simek
Enable hardware exception by default to be able to handle it. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2014-02-04microblaze: Add SPL supportMichal Simek
Add support for U-BOOT SPL. NOR and RAM mode are supported. There are 3 images in NOR flash. u-boot.img, dtb and kernel. Signed-off-by: Michal Simek <michal.simek@xilinx.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>
2012-11-07microblaze: Flush caches before enabling themMichal Simek
Flushing caches is necessary because of soft reset which doesn't clear caches. Signed-off-by: Michal Simek <monstr@monstr.eu> Reviewed-by: Marek Vasut <marex@denx.de>
2012-09-11microblaze: Clean microblaze initializationMichal Simek
Move board specific function to board_init function in board/ folder Remove externs from generic board.c Use board_init_f function in board.c file. Signed-off-by: Michal Simek <monstr@monstr.eu> Acked-by: Stephan Linz <linz@li-pro.net>
2012-07-10microblaze: intc: Clear interrupt codeMichal Simek
Clear and prepare for device-tree driven configuration. Remove CONFIG_SYS_INTC_0 definition Use dynamic allocation instead of static. Signed-off-by: Michal Simek <monstr@monstr.eu> Acked-by: Simon Glass <sjg@chromium.org>
2011-10-03microblaze: Clean up reset asm codeMichal Simek
- Remove code copying - Reset address is setup from first stage bootloader - Support reset vector setup on little endian Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-10-03microblaze: Save and restore first unused vectorMichal Simek
Use one memory space to detect little/big endian platforms. The first unused address(0x28) is used instead 0x0 address (reset vectors). Detection rewrited reset vector setup from first stage bootloader. Workflow: 1. Store 0x28 to r7 2. Do little/big endian test 3. Restore r7 to 0x28 Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-10-03microblaze: Setup MB vectors if feature is enable for u-bootMichal Simek
For example: Setup reset vectors if reset address is setup. Setup user exception vector if user exception is enabled Signed-off-by: Michal Simek <monstr@monstr.eu>
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