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| author | Paul Mundt <lethal@linux-sh.org> | 2010-01-13 18:31:48 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-01-13 18:31:48 +0900 |
| commit | a0ab36689a36e583b6e736f1c99ac8c9aebdad59 (patch) | |
| tree | 3efc6236d7ec0b5dbeeb311b8cd923c8e1e7f88c /arch/sh/kernel/vmlinux.lds.S | |
| parent | 7f33306ee57bce9c79825e89c457a91025aa5aad (diff) | |
| download | op-kernel-dev-a0ab36689a36e583b6e736f1c99ac8c9aebdad59.zip op-kernel-dev-a0ab36689a36e583b6e736f1c99ac8c9aebdad59.tar.gz | |
sh: fixed PMB mode refactoring.
This introduces some much overdue chainsawing of the fixed PMB support.
fixed PMB was introduced initially to work around the fact that dynamic
PMB mode was relatively broken, though they were never intended to
converge. The main areas where there are differences are whether the
system is booted in 29-bit mode or 32-bit mode, and whether legacy
mappings are to be preserved. Any system booting in true 32-bit mode will
not care about legacy mappings, so these are roughly decoupled.
Regardless of the entry point, PMB and 32BIT are directly related as far
as the kernel is concerned, so we also switch back to having one select
the other.
With legacy mappings iterated through and applied in the initialization
path it's now possible to finally merge the two implementations and
permit dynamic remapping overtop of remaining entries regardless of
whether boot mappings are crafted by hand or inherited from the boot
loader.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/vmlinux.lds.S')
| -rw-r--r-- | arch/sh/kernel/vmlinux.lds.S | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S index a1e4ec2..9e5a587 100644 --- a/arch/sh/kernel/vmlinux.lds.S +++ b/arch/sh/kernel/vmlinux.lds.S @@ -14,17 +14,16 @@ OUTPUT_ARCH(sh) #include <asm/cache.h> #include <asm/vmlinux.lds.h> +#if defined(CONFIG_32BIT) && !defined(CONFIG_PMB_LEGACY) +#define MEMORY_OFFSET 0 +#else +#define MEMORY_OFFSET (CONFIG_MEMORY_START & 0x1fffffff) +#endif + ENTRY(_start) SECTIONS { -#ifdef CONFIG_PMB_FIXED - . = CONFIG_PAGE_OFFSET + (CONFIG_MEMORY_START & 0x1fffffff) + - CONFIG_ZERO_PAGE_OFFSET; -#elif defined(CONFIG_32BIT) - . = CONFIG_PAGE_OFFSET + CONFIG_ZERO_PAGE_OFFSET; -#else - . = CONFIG_PAGE_OFFSET + CONFIG_MEMORY_START + CONFIG_ZERO_PAGE_OFFSET; -#endif + . = CONFIG_PAGE_OFFSET + MEMORY_OFFSET + CONFIG_ZERO_PAGE_OFFSET; _text = .; /* Text and read-only data */ |
