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Subject[PATCH] m68k: Enable memtest kernel parameter
Date
Enable the memtest feature and rearrange some code to prevent it from
clobbering the initrd.

The CONFIG_BLK_DEV_INITRD symbol was conditional on !defined(CONFIG_SUN3).
For simplicity, remove that test on the basis that m68k_ramdisk.size == 0
on Sun 3.

The SLIME source code at http://sammy.net/ shows that no BI_RAMDISK entry
is ever passed to the kernel due to #ifdef 0 around the relevant code.

Cc: Mike Rapoport <rppt@kernel.org>
Cc: Sam Creasey <sammy@sammy.net>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
---
Are there any other Linux bootloaders on Sun 3?
---
arch/m68k/Kconfig | 1 +
arch/m68k/kernel/setup_mm.c | 15 ++++++---------
arch/m68k/mm/motorola.c | 2 ++
3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 0b50da08a9c5..0e96066b3c46 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -9,6 +9,7 @@ config M68K
select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
select ARCH_NO_PREEMPT if !COLDFIRE
+ select ARCH_USE_MEMTEST
select ARCH_WANT_IPC_PARSE_VERSION
select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index 4b51bfd38e5f..49e573b94326 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -338,13 +338,6 @@ void __init setup_arch(char **cmdline_p)
panic("No configuration setup");
}

- paging_init();
-
-#ifdef CONFIG_NATFEAT
- nf_init();
-#endif
-
-#ifndef CONFIG_SUN3
#ifdef CONFIG_BLK_DEV_INITRD
if (m68k_ramdisk.size) {
memblock_reserve(m68k_ramdisk.addr, m68k_ramdisk.size);
@@ -354,6 +347,12 @@ void __init setup_arch(char **cmdline_p)
}
#endif

+ paging_init();
+
+#ifdef CONFIG_NATFEAT
+ nf_init();
+#endif
+
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI)
atari_stram_reserve_pages((void *)availmem);
@@ -364,8 +363,6 @@ void __init setup_arch(char **cmdline_p)
}
#endif

-#endif /* !CONFIG_SUN3 */
-
/* set ISA defs early as possible */
#if defined(CONFIG_ISA) && defined(MULTI_ISA)
if (MACH_IS_Q40) {
diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
index 9f3f77785aa7..5b6575eb6d02 100644
--- a/arch/m68k/mm/motorola.c
+++ b/arch/m68k/mm/motorola.c
@@ -455,6 +455,8 @@ void __init paging_init(void)

flush_tlb_all();

+ early_memtest(min_addr, max_addr);
+
/*
* initialize the bad page table and bad page to point
* to a couple of allocated pages
--
2.26.3
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