mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
132 lines
4.2 KiB
C
132 lines
4.2 KiB
C
/*
|
|
* (C) Copyright 2003
|
|
* EMK Elektronik GmbH <www.emk-elektronik.de>
|
|
* Reinhard Meyer <r.meyer@emk-elektronik.de>
|
|
*
|
|
* Board specific routines for the TOP860
|
|
*
|
|
* - initialisation
|
|
* - interface to VPD data (mac address, clock speeds)
|
|
* - memory controller
|
|
* - serial io initialisation
|
|
* - ethernet io initialisation
|
|
*
|
|
* -----------------------------------------------------------------
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <commproc.h>
|
|
#include <mpc8xx.h>
|
|
#include <asm/io.h>
|
|
|
|
/*****************************************************************************
|
|
* UPM table for 60ns EDO RAM at 25 MHz bus/external clock
|
|
*****************************************************************************/
|
|
static const uint edo_60ns_25MHz_tbl[] = {
|
|
|
|
/* single read (offset 0x00 in upm ram) */
|
|
0x0ff3fc04,0x08f3fc04,0x00f3fc04,0x00f3fc00,
|
|
0x33f7fc07,0xfffffc05,0xfffffc05,0xfffffc05,
|
|
/* burst read (offset 0x08 in upm ram) */
|
|
0x0ff3fc04,0x08f3fc04,0x00f3fc0c,0x0ff3fc40,
|
|
0x0cf3fc04,0x03f3fc48,0x0cf3fc04,0x03f3fc48,
|
|
0x0cf3fc04,0x03f3fc00,0x3ff7fc07,0xfffffc05,
|
|
0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
|
|
/* single write (offset 0x18 in upm ram) */
|
|
0x0ffffc04,0x08fffc04,0x30fffc00,0xf1fffc07,
|
|
0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
|
|
/* burst write (offset 0x20 in upm ram) */
|
|
0x0ffffc04,0x08fffc00,0x00fffc04,0x03fffc4c,
|
|
0x00fffc00,0x07fffc4c,0x00fffc00,0x0ffffc4c,
|
|
0x00fffc00,0x3ffffc07,0xfffffc05,0xfffffc05,
|
|
0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
|
|
/* refresh (offset 0x30 in upm ram) */
|
|
0xc0fffc04,0x07fffc04,0x0ffffc04,0x0ffffc04,
|
|
0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
|
|
0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
|
|
/* exception (offset 0x3C in upm ram) */
|
|
0xfffffc07,0xfffffc03,0xfffffc05,0xfffffc05,
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* Print Board Identity
|
|
*****************************************************************************/
|
|
int checkboard (void)
|
|
{
|
|
puts ("Board:"CONFIG_IDENT_STRING"\n");
|
|
return (0);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Initialize DRAM controller
|
|
*****************************************************************************/
|
|
phys_size_t initdram (int board_type)
|
|
{
|
|
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
|
|
volatile memctl8xx_t *memctl = &immap->im_memctl;
|
|
|
|
/*
|
|
* Only initialize memory controller when running from FLASH.
|
|
* When running from RAM, don't touch it.
|
|
*/
|
|
if ((ulong) initdram & 0xff000000) {
|
|
volatile uint *addr1, *addr2;
|
|
uint i;
|
|
|
|
upmconfig (UPMA, (uint *) edo_60ns_25MHz_tbl,
|
|
sizeof (edo_60ns_25MHz_tbl) / sizeof (uint));
|
|
memctl->memc_mptpr = 0x0200;
|
|
memctl->memc_mamr = 0x0ca20330;
|
|
memctl->memc_or2 = -CONFIG_SYS_DRAM_MAX | OR_CSNT_SAM;
|
|
memctl->memc_br2 = CONFIG_SYS_DRAM_BASE | BR_MS_UPMA | BR_V;
|
|
/*
|
|
* Do 8 read accesses to DRAM
|
|
*/
|
|
addr1 = (volatile uint *) 0;
|
|
addr2 = (volatile uint *) 0x00400000;
|
|
for (i = 0; i < 8; i++)
|
|
in_be32(addr1);
|
|
|
|
/*
|
|
* Now check whether we got 4MB or 16MB populated
|
|
*/
|
|
addr1[0] = 0x12345678;
|
|
addr1[1] = 0x9abcdef0;
|
|
addr2[0] = 0xfeedc0de;
|
|
addr2[1] = 0x47110815;
|
|
if (addr1[0] == 0xfeedc0de && addr1[1] == 0x47110815) {
|
|
/* only 4MB populated */
|
|
memctl->memc_or2 = -(CONFIG_SYS_DRAM_MAX / 4) | OR_CSNT_SAM;
|
|
}
|
|
}
|
|
|
|
return -(memctl->memc_or2 & 0xffff0000);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* prepare for FLASH detection
|
|
*****************************************************************************/
|
|
void flash_preinit(void)
|
|
{
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* finalize FLASH setup
|
|
*****************************************************************************/
|
|
void flash_afterinit(uint bank, ulong start, ulong size)
|
|
{
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* otherinits after RAM is there and we are relocated to RAM
|
|
* note: though this is an int function, nobody cares for the result!
|
|
*****************************************************************************/
|
|
int misc_init_r (void)
|
|
{
|
|
/* read 'factory' part of EEPROM */
|
|
extern void read_factory_r (void);
|
|
read_factory_r ();
|
|
|
|
return (0);
|
|
}
|