upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/bf533-stamp/bf533-stamp.c

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5.8 KiB

/*
* U-boot - main board file
*
* Copyright (c) 2005-2008 Analog Devices Inc.
*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <common.h>
#include <asm/io.h>
#include "bf533-stamp.h"
DECLARE_GLOBAL_DATA_PTR;
int checkboard(void)
{
printf("Board: ADI BF533 Stamp board\n");
printf(" Support: http://blackfin.uclinux.org/\n");
return 0;
}
phys_size_t initdram(int board_type)
{
gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
gd->bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE;
return gd->bd->bi_memsize;
}
/* PF0 and PF1 are used to switch between the ethernet and flash:
* PF0 PF1
* flash: 0 0
* ether: 1 0
*/
void swap_to(int device_id)
{
bfin_write_FIO_DIR(bfin_read_FIO_DIR() | PF1 | PF0);
SSYNC();
bfin_write_FIO_FLAG_C(PF1);
if (device_id == ETHERNET)
bfin_write_FIO_FLAG_S(PF0);
else if (device_id == FLASH)
bfin_write_FIO_FLAG_C(PF0);
else
printf("Unknown device to switch\n");
SSYNC();
}
#if defined(CONFIG_MISC_INIT_R)
/* miscellaneous platform dependent initialisations */
int misc_init_r(void)
{
int i;
int cf_stat = 0;
/* Check whether CF card is inserted */
*pFIO_EDGE = FIO_EDGE_CF_BITS;
*pFIO_POLAR = FIO_POLAR_CF_BITS;
for (i = 0; i < 0x300; i++)
asm("nop;");
if ((*pFIO_FLAG_S) & CF_STAT_BITS) {
cf_stat = 0;
} else {
cf_stat = 1;
}
*pFIO_EDGE = FIO_EDGE_BITS;
*pFIO_POLAR = FIO_POLAR_BITS;
if (cf_stat) {
printf("Booting from COMPACT flash\n");
for (i = 0; i < 0x1000; i++)
asm("nop;");
for (i = 0; i < 0x1000; i++)
asm("nop;");
for (i = 0; i < 0x1000; i++)
asm("nop;");
serial_setbrg();
ide_init();
setenv("bootargs", "");
setenv("bootcmd",
"fatload ide 0:1 0x1000000 uImage-stamp;bootm 0x1000000;bootm 0x20100000");
} else {
printf("Booting from FLASH\n");
}
return 0;
}
#endif
#ifdef CONFIG_STAMP_CF
void cf_outb(unsigned char val, volatile unsigned char *addr)
{
/*
* Set PF1 PF0 respectively to 0 1 to divert address
* to the expansion memory banks
*/
*pFIO_FLAG_S = CF_PF0;
*pFIO_FLAG_C = CF_PF1;
SSYNC();
*(addr) = val;
SSYNC();
/* Setback PF1 PF0 to 0 0 to address external
* memory banks */
*(volatile unsigned short *)pFIO_FLAG_C = CF_PF1_PF0;
SSYNC();
}
unsigned char cf_inb(volatile unsigned char *addr)
{
volatile unsigned char c;
*pFIO_FLAG_S = CF_PF0;
*pFIO_FLAG_C = CF_PF1;
SSYNC();
c = *(addr);
SSYNC();
*pFIO_FLAG_C = CF_PF1_PF0;
SSYNC();
return c;
}
void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
{
int i;
*pFIO_FLAG_S = CF_PF0;
*pFIO_FLAG_C = CF_PF1;
SSYNC();
for (i = 0; i < words; i++) {
*(sect_buf + i) = *(addr);
SSYNC();
}
*pFIO_FLAG_C = CF_PF1_PF0;
SSYNC();
}
void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
{
int i;
*pFIO_FLAG_S = CF_PF0;
*pFIO_FLAG_C = CF_PF1;
SSYNC();
for (i = 0; i < words; i++) {
*(addr) = *(sect_buf + i);
SSYNC();
}
*pFIO_FLAG_C = CF_PF1_PF0;
SSYNC();
}
#endif
#ifdef CONFIG_SHOW_BOOT_PROGRESS
#define STATUS_LED_OFF 0
#define STATUS_LED_ON 1
static void stamp_led_set(int LED1, int LED2, int LED3)
{
bfin_write_FIO_INEN(bfin_read_FIO_INEN() & ~(PF2 | PF3 | PF4));
bfin_write_FIO_DIR(bfin_read_FIO_DIR() | (PF2 | PF3 | PF4));
if (LED1 == STATUS_LED_OFF)
*pFIO_FLAG_S = PF2;
else
*pFIO_FLAG_C = PF2;
if (LED2 == STATUS_LED_OFF)
*pFIO_FLAG_S = PF3;
else
*pFIO_FLAG_C = PF3;
if (LED3 == STATUS_LED_OFF)
*pFIO_FLAG_S = PF4;
else
*pFIO_FLAG_C = PF4;
SSYNC();
}
void show_boot_progress(int status)
{
switch (status) {
case 1:
stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_ON);
break;
case 2:
stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_OFF);
break;
case 3:
stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_ON);
break;
case 4:
stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_OFF);
break;
case 5:
case 6:
stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_ON);
break;
case 7:
case 8:
stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_OFF);
break;
case 9:
case 10:
case 11:
case 12:
case 13:
case 14:
case 15:
stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_OFF);
break;
default:
stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_ON);
break;
}
}
#endif
#ifdef CONFIG_STATUS_LED
#include <status_led.h>
static void set_led(int pf, int state)
{
switch (state) {
case STATUS_LED_OFF: bfin_write_FIO_FLAG_S(pf); break;
case STATUS_LED_BLINKING: bfin_write_FIO_FLAG_T(pf); break;
case STATUS_LED_ON: bfin_write_FIO_FLAG_C(pf); break;
}
}
static void set_leds(led_id_t mask, int state)
{
if (mask & 0x1) set_led(PF2, state);
if (mask & 0x2) set_led(PF3, state);
if (mask & 0x4) set_led(PF4, state);
}
void __led_init(led_id_t mask, int state)
{
bfin_write_FIO_INEN(bfin_read_FIO_INEN() & ~(PF2 | PF3 | PF4));
bfin_write_FIO_DIR(bfin_read_FIO_DIR() | (PF2 | PF3 | PF4));
}
void __led_set(led_id_t mask, int state)
{
set_leds(mask, state);
}
void __led_toggle(led_id_t mask)
{
set_leds(mask, STATUS_LED_BLINKING);
}
#endif