On Sep 2, 2011, at 6:16 AM, Ruchika Gupta wrote:
Pre u-boot Flow:
- User loads the u-boot image in flash
- 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:
- 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@freescale.com Signed-off-by: Kuldip Giroh kuldip.giroh@freescale.com Acked-by: Wood Scott-B07421 B07421@freescale.com Signed-off-by: Kumar Gala galak@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