Commit 55153d6c authored by Prabhakar Kushwaha's avatar Prabhakar Kushwaha Committed by York Sun

board/t104xrdb: Add support of CPLD

T1040RDB and T1042RDB_PI has CPLD. Here CPLD controls board mux/features.

This support of CPLD includes
 - files and register defintion
 - Commands to swtich alternate bank and default bank
Signed-off-by: default avatarPrabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: default avatarYork Sun <yorksun@freescale.com>
parent d616fc58
......@@ -6,6 +6,7 @@
obj-y += t104xrdb.o
obj-y += cpld.o
obj-y += ddr.o
obj-y += eth.o
obj-$(CONFIG_PCI) += pci.o
......
/**
* Copyright 2014 Freescale Semiconductor
*
* SPDX-License-Identifier: GPL-2.0+
*
* 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));
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');
}
#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
);
/**
* Copyright 2013 Freescale Semiconductor
*
* 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 cpld_ver; /* 0x00 - CPLD Major Revision Register */
u8 cpld_ver_sub; /* 0x01 - CPLD Minor Revision Register */
u8 hw_ver; /* 0x02 - Hardware Revision Register */
u8 sw_ver; /* 0x03 - Software Revision register */
u8 res0[12]; /* 0x04 - 0x0F - not used */
u8 reset_ctl1; /* 0x10 - Reset control Register1 */
u8 reset_ctl2; /* 0x11 - Reset control Register2 */
u8 int_status; /* 0x12 - Interrupt status Register */
u8 flash_ctl_status; /* 0x13 - Flash control and status register */
u8 fan_ctl_status; /* 0x14 - Fan control and status register */
u8 led_ctl_status; /* 0x15 - LED control and status register */
u8 sfp_ctl_status; /* 0x16 - SFP control and status register */
u8 misc_ctl_status; /* 0x17 - Miscellanies ctrl & status register*/
u8 boot_override; /* 0x18 - Boot override register */
u8 boot_config1; /* 0x19 - Boot config override register*/
u8 boot_config2; /* 0x1A - Boot config override register*/
} cpld_data_t;
/* 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)
......@@ -19,14 +19,27 @@
#include <fm_eth.h>
#include "t104xrdb.h"
#include "cpld.h"
DECLARE_GLOBAL_DATA_PTR;
int checkboard(void)
{
struct cpu_type *cpu = gd->arch.cpu;
u8 sw;
printf("Board: %sRDB\n", cpu->name);
printf("Board rev: 0x%02x CPLD ver: 0x%02x, ",
CPLD_READ(hw_ver), CPLD_READ(sw_ver));
sw = CPLD_READ(flash_ctl_status);
sw = ((sw & CPLD_LBMAP_MASK) >> CPLD_LBMAP_SHIFT);
if (sw <= 7)
printf("vBank: %d\n", sw);
else
printf("Unsupported Bank=%x\n", sw);
return 0;
}
......
......@@ -179,6 +179,14 @@
#define CONFIG_SYS_FLASH_BANKS_LIST {CONFIG_SYS_FLASH_BASE_PHYS}
/* CPLD on IFC */
#define CPLD_LBMAP_MASK 0x3F
#define CPLD_BANK_SEL_MASK 0x07
#define CPLD_BANK_OVERRIDE 0x40
#define CPLD_LBMAP_ALTBANK 0x44 /* BANK OR | BANK 4 */
#define CPLD_LBMAP_DFLTBANK 0x40 /* BANK OR | BANK0 */
#define CPLD_LBMAP_RESET 0xFF
#define CPLD_LBMAP_SHIFT 0x03
#define CONFIG_SYS_CPLD_BASE 0xffdf0000
#define CONFIG_SYS_CPLD_BASE_PHYS (0xf00000000ull | CONFIG_SYS_CPLD_BASE)
#define CONFIG_SYS_CSPR2_EXT (0xf)
......
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