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MIPS: Add generic support for multiple machines within a single kernel

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This patch adds a generic solution to support multiple machines based on
a given SoC within a single kernel image. It is implemented already for
several other architectures but MIPS has no generic support for that yet.

[Ralf: This competes with DT but DT is a much more complex solution and this
code has been used by OpenWRT for a long time so for now DT is a bad reason
to stop the merge but longer term this should be migrated to DT.]

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: kaloz@openwrt.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1814/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Gabor Juhos
2010-11-23 16:06:25 +01:00
committed by Ralf Baechle
parent 0bec405e8e
commit 487d70d0b8
6 changed files with 157 additions and 1 deletions
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7
arch/mips/kernel/vmlinux.lds.S
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@ -98,6 +98,13 @@ SECTIONS
INIT_TEXT_SECTION(PAGE_SIZE)
INIT_DATA_SECTION(16)
. = ALIGN(4);
.mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
__mips_machines_start = .;
*(.mips.machines.init)
__mips_machines_end = .;
}
/* .exit.text is discarded at runtime, not link time, to deal with
* references from .rodata
*/