116 lines
2.8 KiB
C
116 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:
|
|
*
|
|
* CONFIG_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 *)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_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(cmd_tbl_t *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
|
|
);
|