u-boot/board/freescale/t104xrdb/cpld.c
Tom Rini 65cc0e2a65 global: Move remaining CONFIG_SYS_* to CFG_SYS_*
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>
2022-12-05 16:06:08 -05:00

115 lines
2.8 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/**
* Copyright 2014 Freescale Semiconductor
*
* This file provides support for the board-specific CPLD used on some Freescale
* reference boards.
*
* The following macros need to be defined:
*
* CFG_SYS_CPLD_BASE-The virtual address of the base of the CPLD register map
*/
#include <common.h>
#include <command.h>
#include <asm/io.h>
#include "cpld.h"
u8 cpld_read(unsigned int reg)
{
void *p = (void *)CFG_SYS_CPLD_BASE;
return in_8(p + reg);
}
void cpld_write(unsigned int reg, u8 value)
{
void *p = (void *)CFG_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_ctl_status);
reg = (reg & ~CPLD_BANK_SEL_MASK) | CPLD_LBMAP_ALTBANK;
CPLD_WRITE(flash_ctl_status, 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_ctl_status);
reg = (reg & ~CPLD_BANK_SEL_MASK) | CPLD_LBMAP_DFLTBANK;
CPLD_WRITE(flash_ctl_status, reg);
CPLD_WRITE(reset_ctl1, CPLD_LBMAP_RESET);
}
#ifdef DEBUG
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_ctl_status = 0x%02x\n", CPLD_READ(flash_ctl_status));
printf("fan_ctl_status = 0x%02x\n", CPLD_READ(fan_ctl_status));
#if defined(CONFIG_TARGET_T1040D4D4RDB) || defined(CONFIG_TARGET_T1042D4RDB)
printf("int_mask = 0x%02x\n", CPLD_READ(int_mask));
#else
printf("led_ctl_status = 0x%02x\n", CPLD_READ(led_ctl_status));
#endif
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');
}
#endif
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();
#ifdef DEBUG
} else if (strcmp(argv[1], "dump") == 0) {
cpld_dump_regs();
#endif
} 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"
#ifdef DEBUG
"cpld dump - display the CPLD registers\n"
#endif
);