1 /* 2 * Copyright (c) 2019-2023, Intel Corporation. All rights reserved. 3 * Copyright (c) 2024, Altera Corporation. All rights reserved. 4 * 5 * SPDX-License-Identifier: BSD-3-Clause 6 */ 7 8 #include <errno.h> 9 #include <string.h> 10 11 #include "socfpga_handoff.h" 12 13 #define SWAP_UINT32(x) (((x) >> 24) | (((x) & 0x00FF0000) >> 8) | \ 14 (((x) & 0x0000FF00) << 8) | ((x) << 24)) 15 socfpga_get_handoff(handoff * reverse_hoff_ptr)16int socfpga_get_handoff(handoff *reverse_hoff_ptr) 17 { 18 int i; 19 int j; 20 uint32_t *buffer; 21 uint32_t *handoff_ptr = (uint32_t *) PLAT_HANDOFF_OFFSET; 22 uint32_t *reverse_hoff_ptr_dst = (uint32_t *) reverse_hoff_ptr; 23 24 if (sizeof(*handoff_ptr) > sizeof(handoff)) { 25 return -EOVERFLOW; 26 } 27 28 for (j = 0; j < sizeof(handoff) / 4; j++) { 29 memcpy_s((void *) (reverse_hoff_ptr_dst + j), 1, 30 (void *) (handoff_ptr + j), 1); 31 } 32 33 buffer = (uint32_t *)reverse_hoff_ptr_dst; 34 35 /* convert big endian to little endian */ 36 for (i = 0; i < sizeof(handoff) / 4; i++) 37 buffer[i] = SWAP_UINT32(buffer[i]); 38 39 if (reverse_hoff_ptr->header_magic != HANDOFF_MAGIC_HEADER) { 40 return -1; 41 } 42 if (reverse_hoff_ptr->pinmux_sel_magic != HANDOFF_MAGIC_PINMUX_SEL) { 43 return -1; 44 } 45 if (reverse_hoff_ptr->pinmux_io_magic != HANDOFF_MAGIC_IOCTLR) { 46 return -1; 47 } 48 if (reverse_hoff_ptr->pinmux_fpga_magic != HANDOFF_MAGIC_FPGA) { 49 return -1; 50 } 51 if (reverse_hoff_ptr->pinmux_delay_magic != HANDOFF_MAGIC_IODELAY) { 52 return -1; 53 } 54 if (reverse_hoff_ptr->clock_magic != HANDOFF_MAGIC_CLOCK) { 55 return -1; 56 } 57 58 #if PLATFORM_MODEL == PLAT_SOCFPGA_AGILEX5 59 if (reverse_hoff_ptr->peripheral_pwr_gate_magic != HANDOFF_MAGIC_PERIPHERAL) { 60 return -1; 61 } 62 63 if (reverse_hoff_ptr->ddr_magic != HANDOFF_MAGIC_DDR) { 64 return -1; 65 } 66 #endif 67 68 return 0; 69 } 70