Messages in this thread | | | Date | Fri, 19 Jun 2015 17:11:35 -0500 | From | Rob Landley <> | Subject | Re: [PATCH 2/2] Changes to existing files for 0PF FPGA board. |
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[Trimmed greg at what I'm interpreting as his request.]
On 06/18/2015 02:36 PM, Geert Uytterhoeven wrote: > Hi Rob, > > On Thu, Jun 18, 2015 at 7:19 PM, Rob Landley <rob@landley.net> wrote: >> Changes to existing files to add 0pf j2 board support. > > Thanks for your patch! > > Like Greg already said, splitting it up in logical parts and providing useful > patch descriptions would be highly appreciated.
I actually don't know how to split it up further. The initial port was done by a series of contractors (in Russia, I think), and then I inherited it to try to get something releasable. This is the smallest chunk I could get to actually boot.
I suppose I could send you the serial driver by itself, and _then_ the board, but it wouldn't compile if nothing uses it. (Similarly you can't boot the board without a serial console...)
>> diff --git a/arch/sh/Makefile b/arch/sh/Makefile >> index bf5b3f5..e609157 100644 >> --- a/arch/sh/Makefile >> +++ b/arch/sh/Makefile > >> @@ -31,6 +33,7 @@ isa-y := $(isa-y)-up >> endif >> >> cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,) >> +cflags-$(CONFIG_CPU_SH2J) := $(call cc-option,-m2,) > > This is superfluous, as CPU_SH2J selects CPU_SH2.
Ooh, thanks.
>> diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c >> index eb10ff8..7de9bcb 100644 >> --- a/arch/sh/kernel/irq.c >> +++ b/arch/sh/kernel/irq.c >> @@ -20,6 +20,8 @@ >> #include <asm/thread_info.h> >> #include <cpu/mmu_context.h> >> >> +#include <asm/board-0pf.h> > > Board-specific inclusion in generic sh source file?
Gah, I thought I'd whacked all of those. (Staring at it too long to see some of this stuff anymore...)
>> + >> atomic_t irq_err_count; >> >> /* >> @@ -175,11 +177,24 @@ void do_softirq_own_stack(void) >> ); >> } >> #else >> +#define noinline __attribute__((noinline)) >> +static noinline void handle_irq_UART0(unsigned int irq) { generic_handle_irq(irq); } >> +static noinline void handle_irq_UART1(unsigned int irq) { generic_handle_irq(irq); } >> +static noinline void handle_irq_GPS(unsigned int irq) { generic_handle_irq(irq); } >> +static noinline void handle_irq_EMAC(unsigned int irq) { generic_handle_irq(irq); } >> static inline void handle_one_irq(unsigned int irq) >> { >> - generic_handle_irq(irq); >> + switch(irq) { >> + case Irq_UART0: handle_irq_UART0(irq); break; >> + case Irq_UART1: handle_irq_UART1(irq); break; >> + case Irq_GPS: handle_irq_GPS(irq); break; >> + case Irq_EMAC: handle_irq_EMAC(irq); break; >> + default: >> + generic_handle_irq(irq); >> + break; >> + } > > What's the purpose of this change?
Honestly, your guess is as good as mine. (Sorry, I'll move it to a board-specific file. I mentioned needing to redo the interrupt logic _entirely_, it should totally be using SPARSE_IRQ. And in fact most of the above is for drivers I trimmed out of this submission anyway.)
>> } >> -#endif >> +#endif // CONFIG_IRQSTACKS > > Please no C++-style comments (scripts/checkpatch.pl?)
I expect it to try to reach through the screen and throttle me, but sure...
(Now the reason _I_ thought you'd reject it had more to do with not having converted it to device tree yet, and things on that level. But I wanted to get it out there so people outside $DAYJOB can test the hardware. We did a linuxcon japan presentation which lwn.net covered, and we're getting pokes about "where can I download this", so...)
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