diff options
Diffstat (limited to 'drivers/firmware/firmware-zynqmp.c')
| -rw-r--r-- | drivers/firmware/firmware-zynqmp.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index 15e82ac3b31..840c68d45a1 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -7,10 +7,10 @@ #include <common.h> #include <dm.h> +#include <zynqmp_firmware.h> #if defined(CONFIG_ZYNQMP_IPI) #include <mailbox.h> -#include <zynqmp_firmware.h> #include <asm/arch/sys_proto.h> #define PMUFW_PAYLOAD_ARG_CNT 8 @@ -147,6 +147,42 @@ U_BOOT_DRIVER(zynqmp_power) = { }; #endif +int __maybe_unused invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, + u32 arg3, u32 *ret_payload) +{ + /* + * Added SIP service call Function Identifier + * Make sure to stay in x0 register + */ + struct pt_regs regs; + + if (current_el() == 3) + return 0; + + regs.regs[0] = pm_api_id; + regs.regs[1] = ((u64)arg1 << 32) | arg0; + regs.regs[2] = ((u64)arg3 << 32) | arg2; + + smc_call(®s); + + if (ret_payload) { + ret_payload[0] = (u32)regs.regs[0]; + ret_payload[1] = upper_32_bits(regs.regs[0]); + ret_payload[2] = (u32)regs.regs[1]; + ret_payload[3] = upper_32_bits(regs.regs[1]); + ret_payload[4] = (u32)regs.regs[2]; + } + + return regs.regs[0]; +} + +int __maybe_unused versal_pm_request(u32 api_id, u32 arg0, u32 arg1, u32 arg2, + u32 arg3, u32 *ret_payload) +{ + return invoke_smc(PM_SIP_SVC | api_id, arg0, arg1, arg2, arg3, + ret_payload); +} + static const struct udevice_id zynqmp_firmware_ids[] = { { .compatible = "xlnx,zynqmp-firmware" }, { .compatible = "xlnx,versal-firmware"}, |