T4/B4 SoC's have a different version of ISBC. The secure boot functionality is different with the new version of ISBC compared to the earlier SoC's. So the version information is added in file config_mpc85xx.h
Signed-off-by: Ruchika Gupta ruchika.gupta@freescale.com Signed-off-by: Aneesh Bansal aneesh.bansal@freescale.com
README | 3 +++ arch/powerpc/include/asm/config_mpc85xx.h | 9 +++++++++ 2 files changed, 12 insertions(+)
diff --git a/README b/README index aea82be..6c3a8d1 100644 --- a/README +++ b/README @@ -423,6 +423,9 @@ The following options need to be configured: CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT This value denotes start offset of DSP CCSR space.
CONFIG_SYS_FSL_ISBC_VERThis value indicates the major ISBC version on the platform.CONFIG_SYS_FSL_SINGLE_SOURCE_CLK Single Source Clock is clocking mode present in some of FSL SoC's. In this mode, a single differential clock is used to supply
You already have all relevant information present in the current configuration. There is no need to add yet another CONFIG_SYS_ option; the information can easily be derived from the existing data.
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de Ernest asks Frank how long he has been working for the company. "Ever since they threatened to fire me."
ISBC (Internal Secure Boot Code) is an IP which has different versions on different SOC's. The major difference which this CONFIG represents is whether CAAM block is being used for cryptographic operations or not. I will be adding more details in the description IN README and resend the patch.
The only other way that this can be derived is by doing SoC specific checking which would become a little messy.
Regards, Aneesh Bansal