[U-Boot] [PATCH 1/3] powerpc/p4080: Add support for secure boot flow

[Kumar Gala]

On Sep 2, 2011, at 6:16 AM, Ruchika Gupta wrote:

> Pre u-boot Flow:
> 1. User loads the u-boot image in flash
> 2. PBL/Configuration word is used to create LAW for Flash at 0xc0000000
> (Please note that ISBC expects all these addresses, images to be
>  validated, entry point etc within 0 - 3.5G range)
> 3. ISBC validates the u-boot image, and passes control to u-boot
> at 0xcffffffc.
> 
> Changes in u-boot:
> 1. Temporarily map CONFIG_SYS_MONITOR_BASE to the 1M
> CONFIG_SYS_PBI_FLASH_WINDOW in AS=1.
> (The CONFIG_SYS_PBI_FLASH_WINDOW is the address map for the flash
>  created by PBL/configuration word within 0 - 3.5G memory range. The
>  u-boot image at this address has been validated by ISBC code)
> 2. Remove TLB entries for 0 - 3.5G created by ISBC code
> 3. Remove the LAW entry for the CONFIG_SYS_PBI_FLASH_WINDOW created by
> PBL/configuration word after switch to AS = 1
> 
> Signed-off-by: Ruchika Gupta <ruchika.gupta at freescale.com>
> Signed-off-by: Kuldip Giroh <kuldip.giroh at freescale.com>
> Acked-by: Wood Scott-B07421 <B07421 at freescale.com>
> Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
> ---
> arch/powerpc/cpu/mpc85xx/cpu_init.c        |   11 +++++-
> arch/powerpc/cpu/mpc85xx/cpu_init_early.c  |   10 +++++-
> arch/powerpc/cpu/mpc85xx/start.S           |   55 +++++++++++++++++++++++++++-
> arch/powerpc/include/asm/fsl_secure_boot.h |   43 ++++++++++++++++++++++
> arch/powerpc/include/asm/immap_85xx.h      |    2 +
> boards.cfg                                 |    1 +
> include/configs/corenet_ds.h               |    4 ++
> 7 files changed, 123 insertions(+), 3 deletions(-)
> create mode 100644 arch/powerpc/include/asm/fsl_secure_boot.h


applied to 85xx

- k