mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-30 22:08:52 +09:00
![Wolfgang Denk](/assets/img/avatar_default.png)
While running from flash, i. e. before relocation, we have only a limited C runtime environment without writable data segment. In this phase, some configurations (for example with environment in EEPROM) must not use the normal getenv(), but a special function. This function had been called getenv_r(), with the idea that the "_r" suffix would mean the same as in the _r_eentrant versions of some of the C library functions (for example getdate vs. getdate_r, getgrent vs. getgrent_r, etc.). Unfortunately this was a misleading name, as in U-Boot the "_r" generally means "running from RAM", i. e. _after_ relocation. To avoid confusion, rename into getenv_f() [as "running from flash"] Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de>
159 lines
4.2 KiB
C
159 lines
4.2 KiB
C
/*
|
|
* (C) Copyright 2001-2003
|
|
* Stefan Roese, DENX Software Engineering, sr@denx.de.
|
|
*
|
|
* (C) Copyright 2005-2009
|
|
* Matthias Fuchs, esd gmbh germany, matthias.fuchs@esd-electronics.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/processor.h>
|
|
#include <asm/io.h>
|
|
#include <command.h>
|
|
#include <malloc.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
extern void lxt971_no_sleep(void);
|
|
|
|
int board_early_init_f (void)
|
|
{
|
|
/*
|
|
* IRQ 0-15 405GP internally generated; active high; level sensitive
|
|
* IRQ 16 405GP internally generated; active low; level sensitive
|
|
* IRQ 17-24 RESERVED
|
|
* IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
|
|
* IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
|
|
* IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
|
|
* IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
|
|
* IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
|
|
* IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
|
|
* IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
|
|
*/
|
|
mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
|
|
mtdcr(UIC0ER, 0x00000000); /* disable all ints */
|
|
mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/
|
|
mtdcr(UIC0PR, 0xFFFFFF81); /* set int polarities */
|
|
mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */
|
|
mtdcr(UIC0VCR, 0x00000001); /* set vect base=0, INT0 highest priority */
|
|
mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
|
|
|
|
/*
|
|
* EBC Configuration Register:
|
|
* set ready timeout to 512 ebc-clks -> ca. 15 us
|
|
*/
|
|
mtebc (EBC0_CFG, 0xa8400000);
|
|
|
|
/*
|
|
* Setup GPIO pins
|
|
*/
|
|
mtdcr(CPC0_CR0, mfdcr(CPC0_CR0) | ((CONFIG_SYS_FPGA_INIT |
|
|
CONFIG_SYS_FPGA_DONE |
|
|
CONFIG_SYS_XEREADY |
|
|
CONFIG_SYS_NONMONARCH |
|
|
CONFIG_SYS_REV1_2) << 5));
|
|
|
|
if (!(in_be32((void *)GPIO0_IR) & CONFIG_SYS_REV1_2)) {
|
|
/* rev 1.2 boards */
|
|
mtdcr(CPC0_CR0, mfdcr(CPC0_CR0) | ((CONFIG_SYS_INTA_FAKE |
|
|
CONFIG_SYS_SELF_RST) << 5));
|
|
}
|
|
|
|
out_be32((void *)GPIO0_OR, CONFIG_SYS_VPEN);
|
|
/* setup for output */
|
|
out_be32((void *)GPIO0_TCR, CONFIG_SYS_FPGA_PRG | CONFIG_SYS_FPGA_CLK |
|
|
CONFIG_SYS_FPGA_DATA | CONFIG_SYS_XEREADY | CONFIG_SYS_VPEN);
|
|
|
|
/*
|
|
* - check if rev1_2 is low, then:
|
|
* - set/reset CONFIG_SYS_INTA_FAKE/CONFIG_SYS_SELF_RST
|
|
* in TCR to assert INTA# or SELFRST#
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
int misc_init_r (void)
|
|
{
|
|
/* adjust flash start and offset */
|
|
gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
|
|
gd->bd->bi_flashoffset = 0;
|
|
|
|
/* deassert EREADY# */
|
|
out_be32((void *)GPIO0_OR,
|
|
in_be32((void *)GPIO0_OR) | CONFIG_SYS_XEREADY);
|
|
return (0);
|
|
}
|
|
|
|
ushort pmc405_pci_subsys_deviceid(void)
|
|
{
|
|
ulong val;
|
|
|
|
val = in_be32((void *)GPIO0_IR);
|
|
if (!(val & CONFIG_SYS_REV1_2)) { /* low=rev1.2 */
|
|
/* check monarch# signal */
|
|
if (val & CONFIG_SYS_NONMONARCH)
|
|
return CONFIG_SYS_PCI_SUBSYS_DEVICEID_NONMONARCH;
|
|
return CONFIG_SYS_PCI_SUBSYS_DEVICEID_MONARCH;
|
|
}
|
|
return CONFIG_SYS_PCI_SUBSYS_DEVICEID_NONMONARCH;
|
|
}
|
|
|
|
/*
|
|
* Check Board Identity
|
|
*/
|
|
int checkboard (void)
|
|
{
|
|
ulong val;
|
|
char str[64];
|
|
int i = getenv_f("serial#", str, sizeof(str));
|
|
|
|
puts ("Board: ");
|
|
|
|
if (i == -1)
|
|
puts ("### No HW ID - assuming PMC405");
|
|
else
|
|
puts(str);
|
|
|
|
val = in_be32((void *)GPIO0_IR);
|
|
if (!(val & CONFIG_SYS_REV1_2)) { /* low=rev1.2 */
|
|
puts(" rev1.2 (");
|
|
if (val & CONFIG_SYS_NONMONARCH) /* monarch# signal */
|
|
puts("non-");
|
|
puts("monarch)");
|
|
} else
|
|
puts(" <=rev1.1");
|
|
|
|
putc ('\n');
|
|
|
|
return 0;
|
|
}
|
|
|
|
void reset_phy(void)
|
|
{
|
|
#ifdef CONFIG_LXT971_NO_SLEEP
|
|
|
|
/*
|
|
* Disable sleep mode in LXT971
|
|
*/
|
|
lxt971_no_sleep();
|
|
#endif
|
|
}
|