mirror of
https://github.com/AsahiLinux/u-boot
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65cc0e2a65
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/**
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* Copyright 2014 Freescale Semiconductor
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*
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* Author: Chunhe Lan <Chunhe.Lan@freescale.com>
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*
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* This file provides support for the board-specific CPLD used on some Freescale
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* reference boards.
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*
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* The following macros need to be defined:
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*
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* CFG_SYS_CPLD_BASE - The virtual address of the base of the
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* CPLD register map
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/io.h>
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#include "cpld.h"
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u8 cpld_read(unsigned int reg)
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{
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void *p = (void *)CFG_SYS_CPLD_BASE;
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return in_8(p + reg);
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}
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void cpld_write(unsigned int reg, u8 value)
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{
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void *p = (void *)CFG_SYS_CPLD_BASE;
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out_8(p + reg, value);
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}
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/**
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* Set the boot bank to the alternate bank
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*/
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void cpld_set_altbank(void)
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{
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u8 val, curbank, altbank, override;
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val = CPLD_READ(vbank);
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curbank = val & CPLD_BANK_SEL_MASK;
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switch (curbank) {
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case CPLD_SELECT_BANK0:
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case CPLD_SELECT_BANK4:
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altbank = CPLD_SELECT_BANK4;
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CPLD_WRITE(vbank, altbank);
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override = CPLD_READ(software_on);
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CPLD_WRITE(software_on, override | CPLD_BANK_SEL_EN);
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CPLD_WRITE(sys_reset, CPLD_SYSTEM_RESET);
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break;
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default:
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printf("CPLD Altbank Fail: Invalid value!\n");
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return;
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}
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}
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/**
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* Set the boot bank to the default bank
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*/
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void cpld_set_defbank(void)
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{
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u8 val;
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val = CPLD_DEFAULT_BANK;
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CPLD_WRITE(global_reset, val);
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}
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#ifdef DEBUG
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static void cpld_dump_regs(void)
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{
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printf("chip_id1 = 0x%02x\n", CPLD_READ(chip_id1));
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printf("chip_id2 = 0x%02x\n", CPLD_READ(chip_id2));
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printf("sw_maj_ver = 0x%02x\n", CPLD_READ(sw_maj_ver));
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printf("sw_min_ver = 0x%02x\n", CPLD_READ(sw_min_ver));
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printf("hw_ver = 0x%02x\n", CPLD_READ(hw_ver));
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printf("software_on = 0x%02x\n", CPLD_READ(software_on));
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printf("cfg_rcw_src = 0x%02x\n", CPLD_READ(cfg_rcw_src));
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printf("res0 = 0x%02x\n", CPLD_READ(res0));
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printf("vbank = 0x%02x\n", CPLD_READ(vbank));
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printf("sw1_sysclk = 0x%02x\n", CPLD_READ(sw1_sysclk));
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printf("sw2_status = 0x%02x\n", CPLD_READ(sw2_status));
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printf("sw3_status = 0x%02x\n", CPLD_READ(sw3_status));
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printf("sw4_status = 0x%02x\n", CPLD_READ(sw4_status));
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printf("sys_reset = 0x%02x\n", CPLD_READ(sys_reset));
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printf("global_reset = 0x%02x\n", CPLD_READ(global_reset));
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printf("res1 = 0x%02x\n", CPLD_READ(res1));
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putc('\n');
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}
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#endif
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#ifndef CONFIG_SPL_BUILD
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int do_cpld(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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int rc = 0;
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if (argc <= 1)
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return cmd_usage(cmdtp);
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if (strcmp(argv[1], "reset") == 0) {
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if (strcmp(argv[2], "altbank") == 0)
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cpld_set_altbank();
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else
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cpld_set_defbank();
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#ifdef DEBUG
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} else if (strcmp(argv[1], "dump") == 0) {
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cpld_dump_regs();
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#endif
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} else
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rc = cmd_usage(cmdtp);
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return rc;
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}
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U_BOOT_CMD(
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cpld, CONFIG_SYS_MAXARGS, 1, do_cpld,
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"Reset the board or alternate bank",
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"reset - reset to default bank\n"
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"cpld reset altbank - reset to alternate bank\n"
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#ifdef DEBUG
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"cpld dump - display the CPLD registers\n"
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#endif
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);
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#endif
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