* Cory Maccarrone <[email protected]> [100306 20:53]:
> All,
>
> I've finally gotten some time to test the latest linux-omap code, and
> found the following commit:
>
> 4f2c49fedf... omap: Clean the serial port defines
>
> breaks current omap7xx support. To get linux-omap master to boot, I
> had to revert that, and the three two that follow it:
>
> 0c8219f03... omap: Make uncompress code and DEBUG_LL code generic
> 61b603b4e...omap: Remove old DEBUG_LL serial port options
>
> in order to boot with DEBUG_LL enabled. Disabled, I only needed to
> revert the last two.
Hmm OK thanks for bisecting this. The first patch seems to have
a bug for uncompress.h on non omap3 platforms, see the attached
patch.
Are you sure you have CONFIG_EARLY_PRINTK and earlyprintk also
in your cmdline?
> I don't know enough about that part of the kernel to debug it, so all
> I can offer is a test result. For reference, this was on
> board-htcherald using the htcherald_defconfig settings.
Can you try the following:
- Use the current mainline kernel head
- make sure you have DEBUG_LL and EARLY_PRINTK enabled in your .config
- check that you have earlyprintk also in the kernel cmdline
- no other serial patches applied
If no serial output, please temporarily hardcode the values
for your 7xx board in mach-omap1/include/mach/debug-macro.S for
omap_uart_phys and omap_uart_virt. Maybe that will give some
more clues.
If you don't have any serial output with that, then try this:
- reset some branch to 4f2c49fedf
- make sure you have DEBUG_LL and EARLY_PRINTK enabled in your .config
- check that you have earlyprintk also in the kernel cmdline
- apply the following patch for the uncompress code
That way you might be able to track down further where things
break with the patches following 4f2c49fedf.
Regards,
Tony
--- a/arch/arm/plat-omap/include/plat/uncompress.h
+++ b/arch/arm/plat-omap/include/plat/uncompress.h
@@ -42,11 +42,11 @@ static void putc(int c)
#ifdef CONFIG_ARCH_OMAP
/* Will get removed in the next patch, set to OMAP3 to compile */
#ifdef CONFIG_OMAP_LL_DEBUG_UART3
- uart = (volatile u8 *)(OMAP3_UART3_BASE);
+ uart = (volatile u8 *)(OMAP1_UART3_BASE);
#elif defined(CONFIG_OMAP_LL_DEBUG_UART2)
- uart = (volatile u8 *)(OMAP3_UART2_BASE);
+ uart = (volatile u8 *)(OMAP1_UART2_BASE);
#elif defined(CONFIG_OMAP_LL_DEBUG_UART1)
- uart = (volatile u8 *)(OMAP3_UART1_BASE);
+ uart = (volatile u8 *)(OMAP1_UART1_BASE);
#elif defined(CONFIG_OMAP_LL_DEBUG_NONE)
return;
#else
--
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