linux-kernel - Re: [PATCH] ARM: OMAP2+: allow DEBUG

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Date:	Sun, 21 Feb 2016 20:19:57 +0800
From:	LIYONG <sdliyong@...il.com>
To:	Tony Lindgren <tony@...mide.com>
CC:	<linux@....linux.org.uk>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>
Subject: Re: [PATCH] ARM: OMAP2+: allow DEBUG_UNCOMPRESS for OMAP2+

no problem, let me submit another patch

> 在 2016年2月20日，02:02，Tony Lindgren <tony@...mide.com> 写道：
> 
> Hi,
> 
> * Yong Li <sdliyong@...il.com> [151228 20:12]:
>> Based on the below
>> commit ae3c99a26c60 ("ARM: 7806/1: allow DEBUG_UNCOMPRESS for Tegra"),
>> change the .data section to .text section,
>> to enable DEBUG_UNCOMPRESS for OMAP2+ platforms
>> Tested okay using BeagleBone Black
> 
> Sorry for the delay, I just noticed this one while looking
> through my inbox for pending patches.
> 
> I think we should first simplify things by moving things over
> to use the generic DEBUG_UART_8250 code where the addresses
> need to be specified in the .config. It's been on my list of
> things to do for quite a while but I keep getting interrupted.
> 
> My guess is that if we do that, this patch is no longer
> needed :) Yong, care to take a look at that?
> 
> Regards,
> 
> Tony
> 
>> Signed-off-by: Yong Li <sdliyong@...il.com>
>> ---
>> arch/arm/Kconfig.debug             |  2 +-
>> arch/arm/include/debug/omap2plus.S | 13 ++++++++++---
>> 2 files changed, 11 insertions(+), 4 deletions(-)
>> 
>> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
>> index 259c0ca..e5ae36a 100644
>> --- a/arch/arm/Kconfig.debug
>> +++ b/arch/arm/Kconfig.debug
>> @@ -1596,7 +1596,7 @@ config DEBUG_UART_8250_FLOW_CONTROL
>> config DEBUG_UNCOMPRESS
>>    bool
>>    depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
>> -    default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
>> +    default y if DEBUG_LL && (!DEBUG_OMAP2PLUS_UART || !ZBOOT_ROM) && \
>>             (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
>>    help
>>      This option influences the normal decompressor output for
>> diff --git a/arch/arm/include/debug/omap2plus.S b/arch/arm/include/debug/omap2plus.S
>> index 6d867ae..12421f9 100644
>> --- a/arch/arm/include/debug/omap2plus.S
>> +++ b/arch/arm/include/debug/omap2plus.S
>> @@ -58,11 +58,18 @@
>> 
>> #define UART_OFFSET(addr)    ((addr) & 0x00ffffff)
>> 
>> +#if defined(ZIMAGE)
>> +    omap_uart_phys:    .word    0
>> +    omap_uart_virt:    .word    0
>> +    omap_uart_lsr:    .word    0
>> +#else
>> +
>>        .pushsection .data
>> -omap_uart_phys:    .word    0
>> -omap_uart_virt:    .word    0
>> -omap_uart_lsr:    .word    0
>> +    omap_uart_phys:    .word    0
>> +    omap_uart_virt:    .word    0
>> +    omap_uart_lsr:    .word    0
>>        .popsection
>> +#endif
>> 
>>        .macro    addruart, rp, rv, tmp
>> 
>> -- 
>> 2.1.4
>> 
>> --
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