From 1f91019457b7c2e0f7e9445935985f3d376ad844 Mon Sep 17 00:00:00 2001 From: VNSL Durga Date: Mon, 23 Nov 2020 04:46:04 -0800 Subject: [PATCH] zynqmp:pm: Adds new zynqmp-pm api SMC call for efuse This patch adds new api to access zynqmp efuse memory Signed-off-by: VNSL Durga Signed-off-by: Rajan Vaja Change-Id: I0971ab6549552a6f96412431388d19b822db00ab --- plat/xilinx/zynqmp/pm_service/pm_api_sys.c | 26 +++++++++++++++++++++ plat/xilinx/zynqmp/pm_service/pm_api_sys.h | 2 ++ plat/xilinx/zynqmp/pm_service/pm_defs.h | 1 + plat/xilinx/zynqmp/pm_service/pm_svc_main.c | 8 +++++++ 4 files changed, 37 insertions(+) diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_sys.c b/plat/xilinx/zynqmp/pm_service/pm_api_sys.c index 9a1f1b486..342714935 100644 --- a/plat/xilinx/zynqmp/pm_service/pm_api_sys.c +++ b/plat/xilinx/zynqmp/pm_service/pm_api_sys.c @@ -1591,3 +1591,29 @@ enum pm_ret_status pm_register_access(unsigned int register_access_id, } return ret; } + +/** + * pm_efuse_access() - To program or read efuse bits. + * + * This function provides access to the xilskey library to program/read + * efuse bits. + * + * address_low: lower 32-bit Linear memory space address + * address_high: higher 32-bit Linear memory space address + * + * value: Returned output value + * + * @return Returns status, either success or error+reason + * + */ +enum pm_ret_status pm_efuse_access(uint32_t address_high, + uint32_t address_low, + uint32_t *value) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMU */ + PM_PACK_PAYLOAD3(payload, PM_EFUSE_ACCESS, address_high, address_low); + + return pm_ipi_send_sync(primary_proc, payload, value, 1); +} diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_sys.h b/plat/xilinx/zynqmp/pm_service/pm_api_sys.h index 60fc303fe..b3ebb2752 100644 --- a/plat/xilinx/zynqmp/pm_service/pm_api_sys.h +++ b/plat/xilinx/zynqmp/pm_service/pm_api_sys.h @@ -196,5 +196,7 @@ enum pm_ret_status pm_pll_get_parameter(enum pm_node_id nid, enum pm_ret_status pm_pll_set_mode(enum pm_node_id nid, enum pm_pll_mode mode); enum pm_ret_status pm_pll_get_mode(enum pm_node_id nid, enum pm_pll_mode *mode); +enum pm_ret_status pm_efuse_access(uint32_t address_high, + uint32_t address_low, uint32_t *value); #endif /* PM_API_SYS_H */ diff --git a/plat/xilinx/zynqmp/pm_service/pm_defs.h b/plat/xilinx/zynqmp/pm_service/pm_defs.h index 8b28807b7..da8789301 100644 --- a/plat/xilinx/zynqmp/pm_service/pm_defs.h +++ b/plat/xilinx/zynqmp/pm_service/pm_defs.h @@ -99,6 +99,7 @@ enum pm_api_id { PM_PLL_GET_MODE, /* PM Register Access API */ PM_REGISTER_ACCESS, + PM_EFUSE_ACCESS, PM_API_MAX }; diff --git a/plat/xilinx/zynqmp/pm_service/pm_svc_main.c b/plat/xilinx/zynqmp/pm_service/pm_svc_main.c index bf608dbd3..5b3e73724 100644 --- a/plat/xilinx/zynqmp/pm_service/pm_svc_main.c +++ b/plat/xilinx/zynqmp/pm_service/pm_svc_main.c @@ -615,6 +615,14 @@ uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32); } + case PM_EFUSE_ACCESS: + { + uint32_t value; + + ret = pm_efuse_access(pm_arg[0], pm_arg[1], &value); + SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32); + } + default: WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid); SMC_RET1(handle, SMC_UNK); -- 2.39.5