u-boot/board/eNET/eNET.c
Graeme Russ cfb3a736ff i386: Change inline asm global symbols to local
gcc 4.3.2 optimiser creates multiple copies of inline asm (who knows why)
Remove use of global names for labels to prevent 'symbol already defined'
errors

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-09-04 21:49:48 +02:00

167 lines
5 KiB
C

/*
* (C) Copyright 2008
* Graeme Russ, graeme.russ@gmail.com.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
#include <asm/ic/sc520.h>
#ifdef CONFIG_HW_WATCHDOG
#include <watchdog.h>
#endif
#include "hardware.h"
DECLARE_GLOBAL_DATA_PTR;
#undef SC520_CDP_DEBUG
#ifdef SC520_CDP_DEBUG
#define PRINTF(fmt,args...) printf (fmt ,##args)
#else
#define PRINTF(fmt,args...)
#endif
unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN;
void init_sc520_enet (void)
{
/* Set CPU Speed to 100MHz */
write_mmcr_byte(SC520_CPUCTL, 1);
gd->cpu_clk = 100000000;
/* wait at least one millisecond */
asm("movl $0x2000,%%ecx\n"
"0: pushl %%ecx\n"
"popl %%ecx\n"
"loop 0b\n": : : "ecx");
/* turn on the SDRAM write buffer */
write_mmcr_byte(SC520_DBCTL, 0x11);
/* turn on the cache and disable write through */
asm("movl %%cr0, %%eax\n"
"andl $0x9fffffff, %%eax\n"
"movl %%eax, %%cr0\n" : : : "eax");
}
/*
* Miscellaneous platform dependent initializations
*/
int board_init(void)
{
init_sc520_enet();
write_mmcr_byte(SC520_GPCSRT, 0x01); /* GP Chip Select Recovery Time */
write_mmcr_byte(SC520_GPCSPW, 0x07); /* GP Chip Select Pulse Width */
write_mmcr_byte(SC520_GPCSOFF, 0x00); /* GP Chip Select Offset */
write_mmcr_byte(SC520_GPRDW, 0x05); /* GP Read pulse width */
write_mmcr_byte(SC520_GPRDOFF, 0x01); /* GP Read offset */
write_mmcr_byte(SC520_GPWRW, 0x05); /* GP Write pulse width */
write_mmcr_byte(SC520_GPWROFF, 0x01); /* GP Write offset */
write_mmcr_word(SC520_PIODATA15_0, 0x0630); /* PIO15_PIO0 Data */
write_mmcr_word(SC520_PIODATA31_16, 0x2000); /* PIO31_PIO16 Data */
write_mmcr_word(SC520_PIODIR31_16, 0x2000); /* GPIO Direction */
write_mmcr_word(SC520_PIODIR15_0, 0x87b5); /* GPIO Direction */
write_mmcr_word(SC520_PIOPFS31_16, 0x0dfe); /* GPIO pin function 31-16 reg */
write_mmcr_word(SC520_PIOPFS15_0, 0x200a); /* GPIO pin function 15-0 reg */
write_mmcr_byte(SC520_CSPFS, 0x00f8); /* Chip Select Pin Function Select */
write_mmcr_long(SC520_PAR2, 0x200713f8); /* Uart A (GPCS0, 0x013f8, 8 Bytes) */
write_mmcr_long(SC520_PAR3, 0x2c0712f8); /* Uart B (GPCS3, 0x012f8, 8 Bytes) */
write_mmcr_long(SC520_PAR4, 0x300711f8); /* Uart C (GPCS4, 0x011f8, 8 Bytes) */
write_mmcr_long(SC520_PAR5, 0x340710f8); /* Uart D (GPCS5, 0x010f8, 8 Bytes) */
write_mmcr_long(SC520_PAR6, 0xe3ffc000); /* SDRAM (0x00000000, 128MB) */
write_mmcr_long(SC520_PAR7, 0xaa3fd000); /* StrataFlash (ROMCS1, 0x10000000, 16MB) */
write_mmcr_long(SC520_PAR8, 0xca3fd100); /* StrataFlash (ROMCS2, 0x11000000, 16MB) */
write_mmcr_long(SC520_PAR9, 0x4203d900); /* SRAM (GPCS0, 0x19000000, 1MB) */
write_mmcr_long(SC520_PAR10, 0x4e03d910); /* SRAM (GPCS3, 0x19100000, 1MB) */
write_mmcr_long(SC520_PAR11, 0x50018100); /* DP-RAM (GPCS4, 0x18100000, 4kB) */
write_mmcr_long(SC520_PAR12, 0x54020000); /* CFLASH1 (0x200000000, 4kB) */
write_mmcr_long(SC520_PAR13, 0x5c020001); /* CFLASH2 (0x200010000, 4kB) */
/* write_mmcr_long(SC520_PAR14, 0x8bfff800); */ /* BOOTCS at 0x18000000 */
/* write_mmcr_long(SC520_PAR15, 0x38201000); */ /* LEDs etc (GPCS6, 0x1000, 20 Bytes */
/* Disable Watchdog */
write_mmcr_word(0x0cb0, 0x3333);
write_mmcr_word(0x0cb0, 0xcccc);
write_mmcr_word(0x0cb0, 0x0000);
/* Chip Select Configuration */
write_mmcr_word(SC520_BOOTCSCTL, 0x0033);
write_mmcr_word(SC520_ROMCS1CTL, 0x0615);
write_mmcr_word(SC520_ROMCS2CTL, 0x0615);
write_mmcr_byte(SC520_ADDDECCTL, 0x02);
write_mmcr_byte(SC520_UART1CTL, 0x07);
write_mmcr_byte(SC520_SYSARBCTL,0x06);
write_mmcr_word(SC520_SYSARBMENB, 0x0003);
/* Crystal is 33.000MHz */
gd->bus_clk = 33000000;
return 0;
}
int dram_init(void)
{
init_sc520_dram();
return 0;
}
void show_boot_progress(int val)
{
uchar led_mask;
led_mask = 0x00;
if (val < 0)
led_mask |= LED_ERR_BITMASK;
led_mask |= (uchar)(val & 0x001f);
outb(led_mask, LED_LATCH_ADDRESS);
}
int last_stage_init(void)
{
int minor;
int major;
major = minor = 0;
printf("Serck Controls eNET\n");
return 0;
}
ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
{
if (banknum == 0) { /* non-CFI boot flash */
info->portwidth = FLASH_CFI_8BIT;
info->chipwidth = FLASH_CFI_BY8;
info->interface = FLASH_CFI_X8;
return 1;
} else
return 0;
}