| Chunhe Lan | c3eb88d | 2014-09-12 14:47:09 +0800 | [diff] [blame] | 1 | /** |
| 2 | * Copyright 2014 Freescale Semiconductor |
| 3 | * |
| 4 | * Author: Chunhe Lan <Chunhe.Lan@freescale.com> |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0+ |
| 7 | * |
| 8 | * This file provides support for the ngPIXIS, a board-specific FPGA used on |
| 9 | * some Freescale reference boards. |
| 10 | */ |
| 11 | |
| 12 | /* |
| 13 | * CPLD register set. Feel free to add board-specific #ifdefs where necessary. |
| 14 | */ |
| 15 | struct cpld_data { |
| 16 | u8 chip_id1; /* 0x00 - CPLD Chip ID1 Register */ |
| 17 | u8 chip_id2; /* 0x01 - CPLD Chip ID2 Register */ |
| 18 | u8 sw_maj_ver; /* 0x02 - CPLD Code Major Version Register */ |
| 19 | u8 sw_min_ver; /* 0x03 - CPLD Code Minor Version Register */ |
| 20 | u8 hw_ver; /* 0x04 - PCBA Version Register */ |
| 21 | u8 software_on; /* 0x05 - Override Physical Switch Enable Register */ |
| 22 | u8 cfg_rcw_src; /* 0x06 - RCW Source Location Control Register */ |
| 23 | u8 res0; /* 0x07 - not used */ |
| 24 | u8 vbank; /* 0x08 - Flash Bank Selection Control Register */ |
| 25 | u8 sw1_sysclk; /* 0x09 - SW1 Status Read Back Register */ |
| 26 | u8 sw2_status; /* 0x0a - SW2 Status Read Back Register */ |
| 27 | u8 sw3_status; /* 0x0b - SW3 Status Read Back Register */ |
| 28 | u8 sw4_status; /* 0x0c - SW4 Status Read Back Register */ |
| 29 | u8 sys_reset; /* 0x0d - Reset System With Reserving Registers Value*/ |
| 30 | u8 global_reset;/* 0x0e - Reset System With Default Registers Value */ |
| 31 | u8 res1; /* 0x0f - not used */ |
| 32 | }; |
| 33 | |
| 34 | #define CPLD_BANK_SEL_MASK 0x07 |
| 35 | #define CPLD_BANK_SEL_EN 0x04 |
| 36 | #define CPLD_SYSTEM_RESET 0x01 |
| 37 | #define CPLD_SELECT_BANK0 0x00 |
| 38 | #define CPLD_SELECT_BANK4 0x04 |
| 39 | #define CPLD_DEFAULT_BANK 0x01 |
| 40 | |
| 41 | /* Pointer to the CPLD register set */ |
| 42 | |
| 43 | u8 cpld_read(unsigned int reg); |
| 44 | void cpld_write(unsigned int reg, u8 value); |
| 45 | |
| 46 | #define CPLD_READ(reg) cpld_read(offsetof(struct cpld_data, reg)) |
| 47 | #define CPLD_WRITE(reg, value) \ |
| 48 | cpld_write(offsetof(struct cpld_data, reg), value) |
| 49 | |