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Groups > linux.kernel > #1574273
| From | Alban <albeu@free.fr> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH] MIPS: Allow compressed images to be loaded at the usual address |
| Date | 2017-02-05 21:30 +0100 |
| Message-ID | <t7BBG-3FO-81@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
From: Alban Bedel <albeu@free.fr> Normally compressed images have to be loaded at a different address to allow the decompressor to run. This add an option to let vmlinuz copy itself to the correct address from the normal vmlinux address. Signed-off-by: Alban Bedel <albeu@free.fr> --- arch/mips/Kconfig | 8 ++++++++ arch/mips/boot/compressed/head.S | 13 +++++++++++++ 2 files changed, 21 insertions(+) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index b3c5bde..8074fc5 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2961,6 +2961,14 @@ choice bool "Extend builtin kernel arguments with bootloader arguments" endchoice +config ZBOOT_VMLINUZ_AT_VMLINUX_LOAD_ADDRESS + bool "Load compressed images at the same address as uncompressed" + depends on SYS_SUPPORTS_ZBOOT + help + vmlinux and vmlinuz normally have different load addresses, with + this option vmlinuz expect to be loaded at the same address as + vmlinux. + endmenu config LOCKDEP_SUPPORT diff --git a/arch/mips/boot/compressed/head.S b/arch/mips/boot/compressed/head.S index 409cb48..a215171 100644 --- a/arch/mips/boot/compressed/head.S +++ b/arch/mips/boot/compressed/head.S @@ -25,6 +25,19 @@ start: move s2, a2 move s3, a3 +#ifdef CONFIG_ZBOOT_VMLINUZ_AT_VMLINUX_LOAD_ADDRESS + /* Move the text, data section and DTB to the correct address */ + PTR_LA a0, .text + PTR_LI a1, VMLINUX_LOAD_ADDRESS + PTR_LA a2, _edata +0: + lw a3, 0(a1) + sw a3, 0(a0) + addiu a1, a1, 4 + bne a2, a0, 0b + addiu a0, a0, 4 +#endif + /* Clear BSS */ PTR_LA a0, _edata PTR_LA a2, _end -- 2.7.4
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[PATCH] MIPS: Allow compressed images to be loaded at the usual address Alban <albeu@free.fr> - 2017-02-05 21:30 +0100
Re: [PATCH] MIPS: Allow compressed images to be loaded at the usual address Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2017-02-06 10:00 +0100
Re: [PATCH] MIPS: Allow compressed images to be loaded at the usual address Jonas Gorski <jonas.gorski@gmail.com> - 2017-02-09 13:30 +0100
Re: [PATCH] MIPS: Allow compressed images to be loaded at the usual address Alban <albeu@free.fr> - 2017-02-13 09:40 +0100
Re: [PATCH] MIPS: Allow compressed images to be loaded at the usual address Jonas Gorski <jonas.gorski@gmail.com> - 2017-02-13 12:00 +0100
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