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Diffstat (limited to 'package/boot/uboot-layerscape/patches/0065-docs-fsl-ppa-Add-documentation-for-PPA-trusted-FW.patch')
-rw-r--r-- | package/boot/uboot-layerscape/patches/0065-docs-fsl-ppa-Add-documentation-for-PPA-trusted-FW.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/package/boot/uboot-layerscape/patches/0065-docs-fsl-ppa-Add-documentation-for-PPA-trusted-FW.patch b/package/boot/uboot-layerscape/patches/0065-docs-fsl-ppa-Add-documentation-for-PPA-trusted-FW.patch new file mode 100644 index 0000000000..e8dc6eb160 --- /dev/null +++ b/package/boot/uboot-layerscape/patches/0065-docs-fsl-ppa-Add-documentation-for-PPA-trusted-FW.patch @@ -0,0 +1,47 @@ +From 39f95bb22c03b18ac6c4ef1b4485414dd4a303cb Mon Sep 17 00:00:00 2001 +From: Abhimanyu Saini <abhimanyu.saini@nxp.com> +Date: Fri, 24 Jun 2016 14:37:42 +0530 +Subject: [PATCH 65/93] docs: fsl-ppa: Add documentation for PPA trusted FW + +Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> +Signed-off-by: Abhimanyu Saini <abhimanyu.saini@nxp.com> +--- + doc/README.fsl-ppa | 26 ++++++++++++++++++++++++++ + 1 file changed, 26 insertions(+) + create mode 100644 doc/README.fsl-ppa + +diff --git a/doc/README.fsl-ppa b/doc/README.fsl-ppa +new file mode 100644 +index 0000000..76cd01f +--- /dev/null ++++ b/doc/README.fsl-ppa +@@ -0,0 +1,26 @@ ++PPA FW for U-boot ++ ++Summary ++======= ++PPA is a trusted firmware for ARMv8 , that handles smc calls from lower ++exception levels, like power state co-ordination interface call or ++smc calls to trusted OS from the Linux kernel. ++ ++Notes ++===== ++ ++1. Currenly, u-boot run at the highest exception level processor ++ supported, which is EL3 in case of ARMv8, if PPA FW is incorporated ++ U-boot copies it to secure location in DDR. ++2. During init U-boot passes control to PPA FW and before returning ++ the core jumps to EL2. ++ ++Using PPA ++========= ++1. Ensure CONFIG_FSL_LS_PPA is set for your platform ++2. Program PPA binary on address CONFIG_SYS_LS_PPA_FW_ADDR on flash ++ ++Contributors ++============ ++ Hou Zhiqiang <Zhiqiang.Hou@nxp.com> ++ Abhimanyu Saini <abhimanyu.saini@nxp.com> +-- +1.7.9.5 + |