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Groups > linux.kernel > #1664339
| From | Hoeun Ryu <hoeun.ryu@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [RESEND PATCH 1/2] arm:omap2+: put omap_uart_phys/virt/lsr in .text section when ZIMAGE is true |
| Date | 2017-06-13 03:20 +0200 |
| Message-ID | <tRIEV-1n3-9@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
omap_uart_phys, omap_uart_virt and omap_uart_lsr reside in .data section and it's right implementation. But because of this, we cannot enable CONFIG_DEBUG_UNCOMPRESS. LL_DEBUG and DEBUG_UNCOMPRESS are very useful tools for debugging early boot stage when something goes wrong if you don't have any hardware based debugging tools like a JTAG debugger. This patch is to put the variables into .text section instead only when the DEBUG_LL_INCLUDE file is included in the kernel decompressor, which is only when ZIMAGE is defined. This patch does not change anything when DEBUG_LL_INCLUDE is included in the other kernel parts like arch/arm/kernel/* Signed-off-by: Hoeun Ryu <hoeun.ryu@gmail.com> --- * to mail to relevant recipients, no respond yet from them - TO=Tony Lindgren <tony@atomide.com> - CC=linux-omap@vger.kernel.org * indentical to previous patch arch/arm/include/debug/omap2plus.S | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/include/debug/omap2plus.S b/arch/arm/include/debug/omap2plus.S index 6d867ae..6ce6ef9 100644 --- a/arch/arm/include/debug/omap2plus.S +++ b/arch/arm/include/debug/omap2plus.S @@ -58,11 +58,22 @@ #define UART_OFFSET(addr) ((addr) & 0x00ffffff) +/* + * Definition of ZIMAGE is in arch/arm/boot/compressed/Makefile. + * Place the following block in .text section only when this file is + * included by arch/arm/boot/compressed/* to make it possible to + * enable CONFIG_DEBUG_UNCOMPRESS and DEBUG in arch/arm/boot/compressed/head.S + * on OMAP2+ SoCs. + */ +#ifndef ZIMAGE .pushsection .data +#endif omap_uart_phys: .word 0 omap_uart_virt: .word 0 omap_uart_lsr: .word 0 +#ifndef ZIMAGE .popsection +#endif .macro addruart, rp, rv, tmp -- 2.7.4
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[RESEND PATCH 1/2] arm:omap2+: put omap_uart_phys/virt/lsr in .text section when ZIMAGE is true Hoeun Ryu <hoeun.ryu@gmail.com> - 2017-06-13 03:20 +0200
[RESEND PATCH 2/2] arm:omap2+: drop dependence on DEBUG_OMAP2PLUS_UART for DEBUG_UNCOMPRESS Hoeun Ryu <hoeun.ryu@gmail.com> - 2017-06-13 03:20 +0200
Re: [RESEND PATCH 1/2] arm:omap2+: put omap_uart_phys/virt/lsr in .text section when ZIMAGE is true Tony Lindgren <tony@atomide.com> - 2017-06-14 07:30 +0200
Re: [RESEND PATCH 1/2] arm:omap2+: put omap_uart_phys/virt/lsr in .text section when ZIMAGE is true Hoeun Ryu <hoeun.ryu@gmail.com> - 2017-06-14 09:00 +0200
Re: [RESEND PATCH 1/2] arm:omap2+: put omap_uart_phys/virt/lsr in .text section when ZIMAGE is true Tony Lindgren <tony@atomide.com> - 2017-06-14 09:30 +0200
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