Instead of relying of MACH_TYPE for board identification,
update the romImage code to relocate an appended DTB to
the beginning of RAM. This implementation is independent
of ARM_APPENDED_DTB, this because it is necessary to copy
the DTB to memory so the kernel can access it.
Without this patch Mackerel does not boot via the Mask ROM
over USB (r_usb_boot) - this since non-DT boot was broken
ages ago in commit:
0ce53cd ARM: mach-shmobile: Use DT_MACHINE for mackerel
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Instead of relying on CONFIG_MEMORY_START for memory
base address, let each romImage board header file
specify this information.
This is reworks code not to rely on CONFIG_MEMORY_START
which in turn is needed for ARCH_MULTIPLATFORM.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Remove the ATAGS data structure from head-shmobile.S
since a default ATAGS is already provided by the code
in arch/arm/kernel/atags_parser.c. Passing a NULL as
ATAGS is valid. For actual hardware specific setup
the fixup callback in the board code may be used.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This allows a ROM-able zImage to be written to eSD and for SuperH Mobile
ARM to boot directly from the SDHI hardware block.
This is achieved by the MaskROM loading the first portion of the image into
MERAM and then jumping to it. This portion contains loader code which
copies the entire image to SDRAM and jumps to it. From there the zImage
boot code proceeds as normal, uncompressing the image into its final
location and then jumping to it.
Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Magnus Damm <magnus.damm@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This allows a ROM-able zImage to be written to MMC and
for SuperH Mobile ARM to boot directly from the MMCIF
hardware block.
This is achieved by the MaskROM loading the first portion
of the image into MERAM and then jumping to it. This portion
contains loader code which copies the entire image to SDRAM
and jumps to it. From there the zImage boot code proceeds
as normal, uncompressing the image into its final location
and then jumping to it.
Cc: Magnus Damm <magnus.damm@gmail.com>
Russell, please consider merging this for 2.6.38.
This patch depends on:
* "mmc, sh: Move MMCIF_PROGRESS_* into sh_mmcif.h"
which will be merged though Paul Mundt's rmobile sh-2.6.
The absence of this patch will break the build if
the (new) CONFIG_ZBOOT_ROM_MMCIF option is set.
There are no subtle side-effects.
v2:
Addressed comments by Magnus Damm
* Fix copyright in vrl4.c
* Fix use of #define CONFIG_ZBOOT_ROM_MMCIF in mmcif-sh7372.c
* Initialise LED GPIO lines in head-ap4evb.txt instead of mmcif-sh7372.c
as this is considered board-specific.
v3:
Addressed comments made in person by Magnus Damm
* Move mmcif_loader to be earlier in the image and
reduce the number of blocks of boot program loaded by the MaskRom
from 40 to 8 accordingly.
* Move LED GPIO initialisation into mmcif_progress_init
- This leaves the partner jet script unbloated
Other
* inline mmcif_update_progress so it is a static inline in a header file
v4:
* Use htole16() and htole32() in v4rl.c to ensure
that the output is little endian
v5:
Addressed comments by Russell King
* Simplify assembly code
* Jump to code rather than an address <- bug fix
* Use (void __iomem *) as appropriate
Roll in mackerel support
* This was previously a separate patch, only because of the order
in which this code was developed
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
When CONFIG_ZBOOT_ROM is selected, the resulting zImage file will be small
boot loader and may be burned to rom or flash.
This is the non-board-specific framework portion of this patch-set.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Magnus Damm