[U-Boot] [PATCH v4 0/9] tegra2: Tidy up boot path

Simon Glass sjg at chromium.org
Sat Nov 5 14:56:48 CET 2011


On Tegra2 the AVP runs the normal U-Boot code to a point, then halts and
the A9 takes over. The current Tegra2 boot path is fairly complex, since it
has a separate path and code for the Cortex-A9 and the AVP. In fact, they
can largely execute the same code path.

This series cleans up this logic and removes some parallel and un-needed
code.

Note this series is rebased against master, with the following patches
added, which should be picked up first:

http://patchwork.ozlabs.org/patch/122888/
http://patchwork.ozlabs.org/patch/122887/
http://patchwork.ozlabs.org/patch/122889/
http://patchwork.ozlabs.org/patch/118184/


Changes in v2:
- Move Makefile armv4t flags from arch/arm/lib to Tegra's config.mk
- Keep Tegra's config.mk file around so we can set the armv4t flags

Changes in v4:
- Revert series to version 1
- Rebase against master
- Use cp_init_cp15() name consistently

Simon Glass (9):
  tegra2: Add arch_cpu_init() to fire up Cortex-A9
  tegra2: Simplify tegra_start() boot path
  arm: Move CP15 init out of cpu_init_crit()
  tegra2: Enable instruction cache
  tegra2: Remove unneeded boot code
  tegra2: Remove unneeded config option
  tegra2: Remove unused low-level Tegra2 UART code
  tegra2: Remove unneeded 'dynamic ram size' message
  tegra2: Don't use board pointer before it is set up

 arch/arm/cpu/armv7/start.S                |   36 +++++-----
 arch/arm/cpu/armv7/tegra2/Makefile        |    5 +
 arch/arm/cpu/armv7/tegra2/ap20.c          |   54 +++++++------
 arch/arm/cpu/armv7/tegra2/ap20.h          |   10 +--
 arch/arm/cpu/armv7/tegra2/board.c         |   35 ++++-----
 arch/arm/cpu/armv7/tegra2/config.mk       |    7 +-
 arch/arm/cpu/armv7/tegra2/lowlevel_init.S |  118 -----------------------------
 arch/arm/include/asm/u-boot-arm.h         |    3 +
 board/nvidia/common/board.c               |    6 +-
 board/nvidia/common/board.h               |    1 -
 drivers/serial/Makefile                   |    1 -
 drivers/serial/serial_tegra2.c            |   77 -------------------
 drivers/serial/serial_tegra2.h            |   29 -------
 include/configs/tegra2-common.h           |    3 +-
 14 files changed, 84 insertions(+), 301 deletions(-)
 delete mode 100644 drivers/serial/serial_tegra2.c
 delete mode 100644 drivers/serial/serial_tegra2.h

-- 
1.7.3.1



More information about the U-Boot mailing list