Thread (19 messages) 19 messages, 5 authors, 2022-09-28

Re: [PATCH 1/5] ARM: remove obsolete Makefile.boot infrastructure

From: Krzysztof Kozlowski <hidden>
Date: 2022-08-19 07:45:48
Also in: lkml

On 18/08/2022 17:56, Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@arndb.de>

There are a number of old Makefile.boot files that remain from the
multiplatform conversion, and three that are still in use.

These provide the "ZRELADDR", "PARAMS_PHYS" and "INITRD_PHYS" values
that are platform specific. It turns out that we can generally just
derive this from information that is available elsewhere:

- ZRELADDR is normally detected at runtime with the
  CONFIG_AUTO_ZRELADDR flag, but also needed to be passed to
  for 'make uImage'. In a multiplatform kernel, one always has
  to pass this as the $(LOADADDR) variable, but in the StrongARM
  kernels we can derive it from the sum of $(CONFIG_PHYS_OFFSET)
  and $(TEXT_OFFSET) that are already known.

- PARAMS_PHYS and INITRD_PHYS are only used for bootpImage, which
  in turn is only used for the pre-ATAGS 'param_struct' based boot
  interface on StrongARM based machines with old boot loaders.
  They can both be derived from CONFIG_PHYS_OFFSET and a machine
  specific offset for the initrd, so all of the logic for these
  can be part of arch/arm/boot/bootp/Makefile.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig                       |  2 +-
 arch/arm/Makefile                      |  4 +--
 arch/arm/boot/Makefile                 | 27 ++++++--------------
 arch/arm/boot/bootp/Makefile           | 35 ++++++++++++++++++++++++--
 arch/arm/mach-at91/Makefile.boot       |  4 ---
 arch/arm/mach-davinci/Makefile.boot    |  8 ------
 arch/arm/mach-dove/Makefile.boot       |  4 ---
 arch/arm/mach-ep93xx/Makefile.boot     |  2 --
 arch/arm/mach-footbridge/Makefile.boot |  5 ----
 arch/arm/mach-imx/Makefile.boot        |  0
 arch/arm/mach-iop32x/Makefile.boot     |  4 ---
 arch/arm/mach-lpc18xx/Makefile.boot    |  4 ---
 arch/arm/mach-lpc32xx/Makefile.boot    |  4 ---
 arch/arm/mach-omap1/Makefile.boot      |  4 ---
 arch/arm/mach-rpc/Makefile.boot        |  5 ----
 arch/arm/mach-s3c/Makefile.boot        |  9 -------

Acked-by: Krzysztof Kozlowski <redacted> # s3c

Best regards,
Krzysztof

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