| Message ID | 20210519095044.4109-1-linkmauve@linkmauve.fr (mailing list archive) |
|---|---|
| Headers | show |
| Series | nvmem: nintendo-otp: Add new driver for the Wii and Wii U OTP | expand |
The OTP is a read-only memory area which contains various keys and signatures used to decrypt, encrypt or verify various pieces of storage. Its size depends on the console, it is 128 bytes on the Wii and 1024 bytes on the Wii U (split into eight 128 bytes banks). It can be used directly by writing into one register and reading from the other one, without any additional synchronisation. This series has been tested on both the Wii U (using my downstream master-wiiu branch[1]), as well as on the Wii on mainline. [1] https://gitlab.com/linkmauve/linux-wiiu/-/commits/master-wiiu Changes since v1: - Fixed the commit messages so they can be accepted by other email servers, sorry about that. Changes since v2: - Switched the dt binding documentation to YAML. - Used more obvious register arithmetic, and tested that gcc (at -O1 and above) outputs the exact same rlwinm instructions for them. - Use more #defines to make the code easier to read. - Include some links to the reversed documentation. - Avoid overlapping dt regions by changing the existing control@d800100 node to end before the OTP registers, with some bigger dt refactoring left for a future series. Emmanuel Gil Peyrot (5): nvmem: nintendo-otp: Add new driver for the Wii and Wii U OTP dt-bindings: nintendo-otp: Document the Wii and Wii U OTP support powerpc: wii.dts: Reduce the size of the control area powerpc: wii.dts: Expose the OTP on this platform powerpc: wii_defconfig: Enable OTP by default .../bindings/nvmem/nintendo-otp.yaml | 44 +++++++ arch/powerpc/boot/dts/wii.dts | 13 +- arch/powerpc/configs/wii_defconfig | 1 + drivers/nvmem/Kconfig | 11 ++ drivers/nvmem/Makefile | 2 + drivers/nvmem/nintendo-otp.c | 124 ++++++++++++++++++ 6 files changed, 194 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/nvmem/nintendo-otp.yaml create mode 100644 drivers/nvmem/nintendo-otp.c
The OTP is a read-only memory area which contains various keys and signatures used to decrypt, encrypt or verify various pieces of storage. Its size depends on the console, it is 128 bytes on the Wii and 1024 bytes on the Wii U (split into eight 128 bytes banks). It can be used directly by writing into one register and reading from the other one, without any additional synchronisation. This series has been tested on both the Wii U (using my downstream master-wiiu branch[1]), as well as on the Wii on mainline. [1] https://gitlab.com/linkmauve/linux-wiiu/-/commits/master-wiiu Changes since v1: - Fixed the commit messages so they can be accepted by other email servers, sorry about that. Changes since v2: - Switched the dt binding documentation to YAML. - Used more obvious register arithmetic, and tested that gcc (at -O1 and above) outputs the exact same rlwinm instructions for them. - Use more #defines to make the code easier to read. - Include some links to the reversed documentation. - Avoid overlapping dt regions by changing the existing control@d800100 node to end before the OTP registers, with some bigger dt refactoring left for a future series. Changes since v3: - Relicense the dt-binding documentation under GPLv2-only or BSD-2-clauses. Emmanuel Gil Peyrot (5): nvmem: nintendo-otp: Add new driver for the Wii and Wii U OTP dt-bindings: nintendo-otp: Document the Wii and Wii U OTP support powerpc: wii.dts: Reduce the size of the control area powerpc: wii.dts: Expose the OTP on this platform powerpc: wii_defconfig: Enable OTP by default .../bindings/nvmem/nintendo-otp.yaml | 44 +++++++ arch/powerpc/boot/dts/wii.dts | 13 +- arch/powerpc/configs/wii_defconfig | 1 + drivers/nvmem/Kconfig | 11 ++ drivers/nvmem/Makefile | 2 + drivers/nvmem/nintendo-otp.c | 124 ++++++++++++++++++ 6 files changed, 194 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/nvmem/nintendo-otp.yaml create mode 100644 drivers/nvmem/nintendo-otp.c
On 01/08/2021 08:38, Emmanuel Gil Peyrot wrote: > The OTP is a read-only memory area which contains various keys and > signatures used to decrypt, encrypt or verify various pieces of storage. > > Its size depends on the console, it is 128 bytes on the Wii and > 1024 bytes on the Wii U (split into eight 128 bytes banks). > > It can be used directly by writing into one register and reading from > the other one, without any additional synchronisation. > > This series has been tested on both the Wii U (using my downstream > master-wiiu branch[1]), as well as on the Wii on mainline. > > [1] https://gitlab.com/linkmauve/linux-wiiu/-/commits/master-wiiu > > Changes since v1: > - Fixed the commit messages so they can be accepted by other email > servers, sorry about that. > > Changes since v2: > - Switched the dt binding documentation to YAML. > - Used more obvious register arithmetic, and tested that gcc (at -O1 and > above) outputs the exact same rlwinm instructions for them. > - Use more #defines to make the code easier to read. > - Include some links to the reversed documentation. > - Avoid overlapping dt regions by changing the existing control@d800100 > node to end before the OTP registers, with some bigger dt refactoring > left for a future series. > > Changes since v3: > - Relicense the dt-binding documentation under GPLv2-only or > BSD-2-clauses. > > Emmanuel Gil Peyrot (5): > nvmem: nintendo-otp: Add new driver for the Wii and Wii U OTP > dt-bindings: nintendo-otp: Document the Wii and Wii U OTP support Applied 1/5 and 2/5 to nvmem next, rest of the patches should go via powerpc dts tree. thanks, --srini > powerpc: wii.dts: Reduce the size of the control area > powerpc: wii.dts: Expose the OTP on this platform > powerpc: wii_defconfig: Enable OTP by default > > .../bindings/nvmem/nintendo-otp.yaml | 44 +++++++ > arch/powerpc/boot/dts/wii.dts | 13 +- > arch/powerpc/configs/wii_defconfig | 1 + > drivers/nvmem/Kconfig | 11 ++ > drivers/nvmem/Makefile | 2 + > drivers/nvmem/nintendo-otp.c | 124 ++++++++++++++++++ > 6 files changed, 194 insertions(+), 1 deletion(-) > create mode 100644 Documentation/devicetree/bindings/nvmem/nintendo-otp.yaml > create mode 100644 drivers/nvmem/nintendo-otp.c >
On Sun, 1 Aug 2021 09:38:17 +0200, Emmanuel Gil Peyrot wrote: > The OTP is a read-only memory area which contains various keys and > signatures used to decrypt, encrypt or verify various pieces of storage. > > Its size depends on the console, it is 128 bytes on the Wii and > 1024 bytes on the Wii U (split into eight 128 bytes banks). > > It can be used directly by writing into one register and reading from > the other one, without any additional synchronisation. > > [...] Patches 3-5 applied to powerpc/next. [3/5] powerpc: wii.dts: Reduce the size of the control area https://git.kernel.org/powerpc/c/b11748e693166679acc13c8a4328a71efe1d4a89 [4/5] powerpc: wii.dts: Expose the OTP on this platform https://git.kernel.org/powerpc/c/562a610b4c5119034aed300f6ae212ec7a20c4b4 [5/5] powerpc: wii_defconfig: Enable OTP by default https://git.kernel.org/powerpc/c/140a89b7bfe65e9649c4a3678f74c32556834ec1 cheers