The Amlogic Meson SoC Secure Monitor implements a call to retrieve an unique SoC ID starting from the GX Family and all new families. But GX-family chips (e.g. GXB, GXL and newer) supports also 128-bit chip ID. 128-bit chip ID consists 32-bit SoC version and 96-bit OTP data. This is next attempt to publish data from the Amlogic secure monitor chipid call. After discussions with Neil Armstrong, it was decided to publish the chipid call results through the soc driver. Since soc_device_match cannot wait for the soc driver to load, and the secure monitor calls in turn depend on the sm driver, it was necessary to create a new driver rather than expand an existing one. In the patches, in addition to writing the driver: - convert commonly used structures and functions of the meson-gx-socinfo driver to a header file. - add secure-monitor references for amlogic,meson-gx-ao-secure sections in dts files of the a1, axg, g12, gx families. --- Changes v3 [1] -> v4: - rebase - fix double free of pointers, thanks to Krzysztof Kozlowski v2 [2] -> v3: - rebase - update dependency in Kconfig for MESON_GX_SOCINFO_SM - add links to secure-monitor in soc driver sections for A1, AXG, GX, G12 v1 [3] -> v2: - create cpu_id structure for socinfo variable - create meson_sm_chip_id for result of sm call - remove shared functions - move from funcs for bit operations to C bit fields Links: - [1] https://lore.kernel.org/linux-arm-kernel/ZfMJ_Z07QkwFbOuQ@bogus/T/ - [2] https://lore.kernel.org/linux-arm-kernel/20240221143654.544444-1-adeep@xxxxxxxxx/ - [3] https://lore.kernel.org/linux-arm-kernel/202311242104.RjBPI3uI-lkp@xxxxxxxxx/T/ Viacheslav Bocharov (4): soc: amlogic: meson-gx-socinfo: move common code to header file soc: amlogic: meson-gx-socinfo-sm: Add Amlogic secure-monitor SoC Information driver soc: amlogic: meson-gx-socinfo: add new definition for Amlogic A113X package arm64: dts: meson: add dts links to secure-monitor for soc driver in a1, axg, gx, g12 arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 1 + arch/arm64/boot/dts/amlogic/meson-axg.dtsi | 1 + .../boot/dts/amlogic/meson-g12-common.dtsi | 1 + arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 1 + drivers/soc/amlogic/Kconfig | 10 + drivers/soc/amlogic/Makefile | 1 + .../soc/amlogic/meson-gx-socinfo-internal.h | 121 +++++++++++ drivers/soc/amlogic/meson-gx-socinfo-sm.c | 189 ++++++++++++++++++ drivers/soc/amlogic/meson-gx-socinfo.c | 136 ++----------- 9 files changed, 339 insertions(+), 122 deletions(-) create mode 100644 drivers/soc/amlogic/meson-gx-socinfo-internal.h create mode 100644 drivers/soc/amlogic/meson-gx-socinfo-sm.c base-commit: 1b294a1f35616977caddaddf3e9d28e576a1adbc -- 2.43.2
