From ab06b236f76cfa42f264ee161be190b3e479298f Mon Sep 17 00:00:00 2001 From: Chunhe Lan Date: Fri, 12 Sep 2014 14:47:09 +0800 Subject: powerpc/t4rdb: Add support of CPLD This support of CPLD includes - Files and register definitions - Command to switch alternate bank - Command to switch default bank Signed-off-by: Chunhe Lan Reviewed-by: York Sun --- board/freescale/t4rdb/cpld.h | 49 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 board/freescale/t4rdb/cpld.h (limited to 'board/freescale/t4rdb/cpld.h') diff --git a/board/freescale/t4rdb/cpld.h b/board/freescale/t4rdb/cpld.h new file mode 100644 index 0000000000..0180082ca3 --- /dev/null +++ b/board/freescale/t4rdb/cpld.h @@ -0,0 +1,49 @@ +/** + * Copyright 2014 Freescale Semiconductor + * + * Author: Chunhe Lan + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This file provides support for the ngPIXIS, a board-specific FPGA used on + * some Freescale reference boards. + */ + +/* + * CPLD register set. Feel free to add board-specific #ifdefs where necessary. + */ +struct cpld_data { + u8 chip_id1; /* 0x00 - CPLD Chip ID1 Register */ + u8 chip_id2; /* 0x01 - CPLD Chip ID2 Register */ + u8 sw_maj_ver; /* 0x02 - CPLD Code Major Version Register */ + u8 sw_min_ver; /* 0x03 - CPLD Code Minor Version Register */ + u8 hw_ver; /* 0x04 - PCBA Version Register */ + u8 software_on; /* 0x05 - Override Physical Switch Enable Register */ + u8 cfg_rcw_src; /* 0x06 - RCW Source Location Control Register */ + u8 res0; /* 0x07 - not used */ + u8 vbank; /* 0x08 - Flash Bank Selection Control Register */ + u8 sw1_sysclk; /* 0x09 - SW1 Status Read Back Register */ + u8 sw2_status; /* 0x0a - SW2 Status Read Back Register */ + u8 sw3_status; /* 0x0b - SW3 Status Read Back Register */ + u8 sw4_status; /* 0x0c - SW4 Status Read Back Register */ + u8 sys_reset; /* 0x0d - Reset System With Reserving Registers Value*/ + u8 global_reset;/* 0x0e - Reset System With Default Registers Value */ + u8 res1; /* 0x0f - not used */ +}; + +#define CPLD_BANK_SEL_MASK 0x07 +#define CPLD_BANK_SEL_EN 0x04 +#define CPLD_SYSTEM_RESET 0x01 +#define CPLD_SELECT_BANK0 0x00 +#define CPLD_SELECT_BANK4 0x04 +#define CPLD_DEFAULT_BANK 0x01 + +/* Pointer to the CPLD register set */ + +u8 cpld_read(unsigned int reg); +void cpld_write(unsigned int reg, u8 value); + +#define CPLD_READ(reg) cpld_read(offsetof(struct cpld_data, reg)) +#define CPLD_WRITE(reg, value) \ + cpld_write(offsetof(struct cpld_data, reg), value) + -- cgit