u-boot.git/arch/microblaze/cpu/start.S, branch v2022.07

microblaze: start.S: add support for configurable vector base address

2022-01-05T09:22:03Z

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 Link: https://lore.kernel.org/r/20211130163358.2531677-9-ovidiu.panait@windriver.com Signed-off-by: Michal Simek

microblaze: migrate CONFIG_SYS_USR_EXCEP to Kconfig

2022-01-05T09:22:03Z

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 Link: https://lore.kernel.org/r/20211130163358.2531677-7-ovidiu.panait@windriver.com Signed-off-by: Michal Simek

microblaze: drop CONFIG_SYS_RESET_ADDRESS macro

2022-01-05T09:22:03Z

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 Link: https://lore.kernel.org/r/20211130163358.2531677-6-ovidiu.panait@windriver.com Signed-off-by: Michal Simek

microblaze: start.S: use stack space as scratch memory for endian offset

2022-01-05T09:22:03Z

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 Link: https://lore.kernel.org/r/20211130163358.2531677-5-ovidiu.panait@windriver.com Signed-off-by: Michal Simek

microblaze: u-boot.lds: replace __end symbol with _end

2022-01-05T09:22:02Z

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 Link: https://lore.kernel.org/r/20211130163358.2531677-2-ovidiu.panait@windriver.com Signed-off-by: Michal Simek

microblaze: start.S: Use board_init_f_alloc/init in early init

2020-10-27T07:01:36Z

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 Signed-off-by: Ovidiu Panait

microblaze: start.S: Factor out exception setup code to __setup_exceptions

2020-10-27T07:01:33Z

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 Signed-off-by: Ovidiu Panait Signed-off-by: Michal Simek

microblaze: Fix tab indentation in start.S

2019-10-24T11:37:03Z

Use tab instead of spaces. Signed-off-by: Michal Simek

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12Z

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

microblaze: spl: configure SYS_MALLOC_F_LEN independently for SPL and full U-Boot

2017-07-27T12:59:03Z

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 Acked-by: Philipp Tomsich Reviewed-by: Philipp Tomsich [fixed up commit-message:] Signed-off-by: Philipp Tomsich