linux-kernel - [PATCH] m68k/nommu: prevent setting ROMKERNEL when ROM is not set

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Date:   Wed,  7 Jul 2021 09:37:29 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Greg Ungerer <gerg@...ux-m68k.org>,
        linux-m68k@...ts.linux-m68k.org, uclinux-dev@...inux.org
Subject: [PATCH] m68k/nommu: prevent setting ROMKERNEL when ROM is not set

When CONFIG_ROMKERNEL is set but CONFIG_ROM is not set, the linker
complains:
  m68k-linux-ld:./arch/m68k/kernel/vmlinux.lds:5: undefined symbol `CONFIG_ROMSTART' referenced in expression

# CONFIG_ROM is not set
# CONFIG_RAMKERNEL is not set
CONFIG_ROMKERNEL=y

Since ROMSTART depends on ROM, make ROMKERNEL also depend on ROM.

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Greg Ungerer <gerg@...ux-m68k.org>
Cc: linux-m68k@...ts.linux-m68k.org
Cc: uclinux-dev@...inux.org
---
 arch/m68k/Kconfig.machine |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20210701.orig/arch/m68k/Kconfig.machine
+++ linux-next-20210701/arch/m68k/Kconfig.machine
@@ -464,6 +464,7 @@ config RAMKERNEL
 
 config ROMKERNEL
 	bool "ROM"
+	depends on ROM
 	help
 	  The kernel will be resident in FLASH/ROM when running. This is
 	  often referred to as Execute-in-Place (XIP), since the kernel