[U-Boot] [PATCH] mips: Add SPL header

[Marek Vasut <marex@denx.de>]

On 05/27/2016 03:21 PM, Daniel Schwierzeck wrote:
> 
> 
> Am 27.05.2016 um 14:42 schrieb Marek Vasut:
>> On 05/27/2016 02:09 PM, Daniel Schwierzeck wrote:
>>>
>>>
>>> Am 26.05.2016 um 20:43 schrieb Marek Vasut:
>>>> From: Paul Burton <paul.burton@imgtec.com>
>>>>
>>>> Add header with SPL boot mode and type definitions.
>>>>
>>>> Signed-off-by: Marek Vasut <marex@denx.de>
>>>> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
>>>> Cc: Paul Burton <paul.burton@imgtec.com>
>>>> ---
>>>>  arch/mips/include/asm/spl.h | 35 +++++++++++++++++++++++++++++++++++
>>>>  1 file changed, 35 insertions(+)
>>>>  create mode 100644 arch/mips/include/asm/spl.h
>>>>
>>>> diff --git a/arch/mips/include/asm/spl.h b/arch/mips/include/asm/spl.h
>>>> new file mode 100644
>>>> index 0000000..01baab6
>>>> --- /dev/null
>>>> +++ b/arch/mips/include/asm/spl.h
>>>> @@ -0,0 +1,35 @@
>>>> +/*
>>>> + * (C) Copyright 2012
>>>> + * Texas Instruments, <www.ti.com>
>>>> + *
>>>> + * SPDX-License-Identifier:	GPL-2.0+
>>>> + */
>>>> +#ifndef	_ASM_SPL_H_
>>>> +#define	_ASM_SPL_H_
>>>> +
>>>> +enum {
>>>> +	BOOT_DEVICE_RAM,
>>>> +	BOOT_DEVICE_MMC1,
>>>> +	BOOT_DEVICE_MMC2,
>>>> +	BOOT_DEVICE_MMC2_2,
>>>> +	BOOT_DEVICE_NAND,
>>>> +	BOOT_DEVICE_ONENAND,
>>>> +	BOOT_DEVICE_NOR,
>>>> +	BOOT_DEVICE_UART,
>>>> +	BOOT_DEVICE_SPI,
>>>> +	BOOT_DEVICE_USB,
>>>> +	BOOT_DEVICE_SATA,
>>>> +	BOOT_DEVICE_I2C,
>>>> +	BOOT_DEVICE_BOARD,
>>>> +	BOOT_DEVICE_NONE
>>>> +};
>>>> +
>>>> +/* Linker symbols. */
>>>> +extern char __bss_start[];
>>>> +extern ulong __bss_end;
>>>
>>> why not "extern char __bss_end[]" like on ARM?
>>
>> Because mips defines this symbol as ulong __bss_end all over the place.
>> I find it weird too and I suspect it's something to synchronize with
>> other platforms.
>>
> 
> hm, it's defined in include/asm-generic/sections.h. All archs but ARM
> are using ulong __bss_end.
> 
> But why isn't there a include/asm-generic/spl.h? The enum should be
> platform-independent and the linker symbols could be pulled from
> include/asm-generic/sections.h.
> 
Yes, indeed, you have a point. I'll put unifying spl.h on the list just
after libgcc issues.

-- 
Best regards,
Marek Vasut