From: Lukas Funke lukas.funke@weidmueller.com
Add functions to access efuses through PMU firmware interface.
Signed-off-by: Lukas Funke lukas.funke@weidmueller.com ---
(no changes since v1)
drivers/firmware/firmware-zynqmp.c | 31 ++++++++++++++++++++++++++++++ include/zynqmp_firmware.h | 2 ++ 2 files changed, 33 insertions(+)
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index dfad798a2e7..8e9687693dd 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -211,6 +211,37 @@ int zynqmp_pm_feature(const u32 api_id) return ret_payload[1] & FIRMWARE_VERSION_MASK; }
+int zynqmp_pm_get_chipid(u32 *idcode, u32 *version) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + int ret; + + if (!idcode || !version) + return -EINVAL; + + ret = xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0, ret_payload); + *idcode = ret_payload[1]; + *version = ret_payload[2]; + + return ret; +} + +int zynqmp_pm_efuse_access(const u64 address, u32 *out) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + int ret; + + if (!out) + return -EINVAL; + + ret = xilinx_pm_request(PM_EFUSE_ACCESS, upper_32_bits(address), + lower_32_bits(address), 0, 0, ret_payload); + + *out = ret_payload[1]; + + return ret; +} + int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id) { int ret; diff --git a/include/zynqmp_firmware.h b/include/zynqmp_firmware.h index 73198a6a6ea..7f18b4d59bf 100644 --- a/include/zynqmp_firmware.h +++ b/include/zynqmp_firmware.h @@ -453,6 +453,8 @@ int xilinx_pm_request(u32 api_id, u32 arg0, u32 arg1, u32 arg2, int zynqmp_pm_set_sd_config(u32 node, enum pm_sd_config_type config, u32 value); int zynqmp_pm_set_gem_config(u32 node, enum pm_gem_config_type config, u32 value); +int zynqmp_pm_get_chipid(u32 *idcode, u32 *version); +int zynqmp_pm_efuse_access(const u64 address, u32 *out); int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id); int zynqmp_mmio_read(const u32 address, u32 *value); int zynqmp_mmio_write(const u32 address, const u32 mask, const u32 value);