linux-kernel - [PATCH] MIPS: TXx9: Let MACH_TX49XX select BOOT

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Message-Id: <de47b857667a73d205b20d419f4aebaa2a885484.1638210176.git.geert@linux-m68k.org>
Date:   Mon, 29 Nov 2021 19:57:14 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] MIPS: TXx9: Let MACH_TX49XX select BOOT_ELF32

Some bootloaders (e.g. VxWorks 5.5 System Boot) on TX49 systems do not
support loading 64-bit kernel images.  Work around this by selecting
BOOT_ELF32, to support running both 32-bit ("vmlinux" with
CONFIG_32BIT=y) and 64-bit ("vmlinux.32" with CONFIG_64BIT=y) Linux
kernels on TX49 devices with such a boot loader.

Suggested-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
Tested on RBTX4927, running a Debian jessie 32-bit mipsel nfsroot userland, and
some 32-bit and 64-bit test binaries.
---
 arch/mips/txx9/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/txx9/Kconfig b/arch/mips/txx9/Kconfig
index 85c4c121c71f72d9..00f6fc446abeefe8 100644
--- a/arch/mips/txx9/Kconfig
+++ b/arch/mips/txx9/Kconfig
@@ -6,6 +6,7 @@ config MACH_TX39XX
 
 config MACH_TX49XX
 	bool
+	select BOOT_ELF32
 	select MACH_TXX9
 	select CEVT_R4K
 	select CSRC_R4K
-- 
2.25.1