// SPDX-License-Identifier: GPL-2.0+ /** * Copyright 2014 Freescale Semiconductor * * Freescale T1024RDB board-specific CPLD controlling supports. * * The following macros need to be defined: */ #include <common.h> #include <command.h> #include <asm/io.h> #include "cpld.h" u8 cpld_read(unsigned int reg) { void *p = (void *)CONFIG_SYS_CPLD_BASE; return in_8(p + reg); } void cpld_write(unsigned int reg, u8 value) { void *p = (void *)CONFIG_SYS_CPLD_BASE; out_8(p + reg, value); } /** * Set the boot bank to the alternate bank */ void cpld_set_altbank(void) { u8 reg = CPLD_READ(flash_csr); reg = (reg & ~CPLD_BANK_SEL_MASK) | CPLD_LBMAP_ALTBANK; CPLD_WRITE(flash_csr, reg); CPLD_WRITE(reset_ctl1, CPLD_LBMAP_RESET); } /** * Set the boot bank to the default bank */ void cpld_set_defbank(void) { u8 reg = CPLD_READ(flash_csr); reg = (reg & ~CPLD_BANK_SEL_MASK) | CPLD_LBMAP_DFLTBANK; CPLD_WRITE(flash_csr, reg); CPLD_WRITE(reset_ctl1, CPLD_LBMAP_RESET); } static void cpld_dump_regs(void) { printf("cpld_ver = 0x%02x\n", CPLD_READ(cpld_ver)); printf("cpld_ver_sub = 0x%02x\n", CPLD_READ(cpld_ver_sub)); printf("hw_ver = 0x%02x\n", CPLD_READ(hw_ver)); printf("sw_ver = 0x%02x\n", CPLD_READ(sw_ver)); printf("reset_ctl1 = 0x%02x\n", CPLD_READ(reset_ctl1)); printf("reset_ctl2 = 0x%02x\n", CPLD_READ(reset_ctl2)); printf("int_status = 0x%02x\n", CPLD_READ(int_status)); printf("flash_csr = 0x%02x\n", CPLD_READ(flash_csr)); printf("fan_ctl_status = 0x%02x\n", CPLD_READ(fan_ctl_status)); printf("led_ctl_status = 0x%02x\n", CPLD_READ(led_ctl_status)); printf("sfp_ctl_status = 0x%02x\n", CPLD_READ(sfp_ctl_status)); printf("misc_ctl_status = 0x%02x\n", CPLD_READ(misc_ctl_status)); printf("boot_override = 0x%02x\n", CPLD_READ(boot_override)); printf("boot_config1 = 0x%02x\n", CPLD_READ(boot_config1)); printf("boot_config2 = 0x%02x\n", CPLD_READ(boot_config2)); putc('\n'); } int do_cpld(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { int rc = 0; if (argc <= 1) return cmd_usage(cmdtp); if (strcmp(argv[1], "reset") == 0) { if (strcmp(argv[2], "altbank") == 0) cpld_set_altbank(); else cpld_set_defbank(); } else if (strcmp(argv[1], "dump") == 0) { cpld_dump_regs(); } else { rc = cmd_usage(cmdtp); } return rc; } U_BOOT_CMD( cpld, CONFIG_SYS_MAXARGS, 1, do_cpld, "Reset the board or alternate bank", "reset - hard reset to default bank\n" "cpld reset altbank - reset to alternate bank\n" "cpld dump - display the CPLD registers\n" );