[U-Boot] [PATCH] MIPS: provide a default u-boot-spl.lds

[Marek Vasut]

On 05/26/2016 01:43 PM, Daniel Schwierzeck wrote:
> 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 at gmail.com>

I'm worried this will blow when you enable DM in SPL, since DM uses
special section(s) to keep the driver linked lists in. You'll probably
need to add something like KEEP(*(SORT(.u_boot_list*))); somewhere in
there.

> ---
> 
>  arch/mips/cpu/u-boot-spl.lds | 83 ++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 83 insertions(+)
>  create mode 100644 arch/mips/cpu/u-boot-spl.lds
> 
> diff --git a/arch/mips/cpu/u-boot-spl.lds b/arch/mips/cpu/u-boot-spl.lds
> new file mode 100644
> index 0000000..e18074b
> --- /dev/null
> +++ b/arch/mips/cpu/u-boot-spl.lds
> @@ -0,0 +1,83 @@
> +/*
> + * SPDX-License-Identifier:	GPL-2.0+
> + */
> +
> +MEMORY { .spl_mem : ORIGIN = CONFIG_SPL_TEXT_BASE, \
> +		LENGTH = CONFIG_SPL_MAX_SIZE }
> +MEMORY { .bss_mem : ORIGIN = CONFIG_SPL_BSS_START_ADDR, \
> +		LENGTH = CONFIG_SPL_BSS_MAX_SIZE }
> +
> +OUTPUT_ARCH(mips)
> +ENTRY(_start)
> +SECTIONS
> +{
> +	. = 0x00000000;
> +
> +	. = ALIGN(4);
> +	.text : {
> +		*(.text*)
> +	} > .spl_mem
> +
> +	. = ALIGN(4);
> +	.rodata : {
> +		*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
> +	} > .spl_mem
> +
> +	. = ALIGN(4);
> +	.data : {
> +		*(SORT_BY_ALIGNMENT(.data*))
> +		*(SORT_BY_ALIGNMENT(.sdata*))
> +	} > .spl_mem
> +
> +	. = ALIGN(4);
> +	__image_copy_end = .;
> +
> +	.bss (NOLOAD) : {
> +		__bss_start = .;
> +		*(.bss*)
> +		*(.sbss*)
> +		*(COMMON)
> +		. = ALIGN(4);
> +		__bss_end = .;
> +	} > .bss_mem
> +
> +	.rel.dyn (NOLOAD) : {
> +		*(.rel.dyn)
> +	}
> +
> +	.dynsym : {
> +		*(.dynsym)
> +	}
> +
> +	.dynbss : {
> +		*(.dynbss)
> +	}
> +
> +	.dynstr : {
> +		*(.dynstr)
> +	}
> +
> +	.dynamic : {
> +		*(.dynamic)
> +	}
> +
> +	.plt : {
> +		*(.plt)
> +	}
> +
> +	.interp : {
> +		*(.interp)
> +	}
> +
> +	.gnu : {
> +		*(.gnu*)
> +	}
> +
> +	.MIPS.stubs : {
> +		*(.MIPS.stubs)
> +	}
> +
> +	.hash : {
> +		*(.hash)
> +	}
> +}
> 


-- 
Best regards,
Marek Vasut