| /* | |
| * Copyright (c) 2022 Raspberry Pi (Trading) Ltd. | |
| * | |
| * SPDX-License-Identifier: BSD-3-Clause | |
| */ | |
| #ifndef _BOOT2_HELPER_WAIT_SSI_READY | |
| #define _BOOT2_HELPER_WAIT_SSI_READY | |
| // Wait for QMI direct mode to go idle. Clobbers r0/a0 (Arm/RISC-V) | |
| #ifdef __riscv | |
| wait_qmi_ready: | |
| 1: | |
| lw a0, QMI_DIRECT_CSR_OFFSET(a3) | |
| andi a0, a0, QMI_DIRECT_CSR_BUSY_BITS | |
| bnez a0, 1b | |
| ret | |
| #else | |
| wait_qmi_ready: | |
| 1: | |
| ldr r0, [r3, #QMI_DIRECT_CSR_OFFSET] | |
| lsrs r0, r0, #QMI_DIRECT_CSR_BUSY_LSB + 1 | |
| bcs 1b | |
| bx lr | |
| #endif | |
| #endif |