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
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
1.8 KiB
66 lines
1.8 KiB
/*
|
|
* (C) Copyright 2008-2011
|
|
* Graeme Russ, <graeme.russ@gmail.com>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
|
|
*
|
|
* 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/processor-flags.h>
|
|
#include <asm/arch/sc520.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
sc520_mmcr_t *sc520_mmcr = (sc520_mmcr_t *)SC520_MMCR_BASE;
|
|
|
|
int cpu_init_f(void)
|
|
{
|
|
if (CONFIG_SYS_SC520_HIGH_SPEED) {
|
|
/* set it to 133 MHz and write back */
|
|
writeb(0x02, &sc520_mmcr->cpuctl);
|
|
gd->cpu_clk = 133000000;
|
|
} else {
|
|
/* set it to 100 MHz and write back */
|
|
writeb(0x01, &sc520_mmcr->cpuctl);
|
|
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");
|
|
|
|
return x86_cpu_init_f();
|
|
}
|
|
|
|
int cpu_init_r(void)
|
|
{
|
|
/* Disable the PAR used for CAR */
|
|
writel(0x0000000, &sc520_mmcr->par[2]);
|
|
|
|
/* turn on the SDRAM write buffer */
|
|
writeb(0x11, &sc520_mmcr->dbctl);
|
|
|
|
return x86_cpu_init_r();
|
|
}
|
|
|