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/*
* (C) Copyright 2005
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.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 <command.h>
#include "p3p440.h"
DECLARE_GLOBAL_DATA_PTR;
void set_led(int color)
{
switch (color) {
case LED_OFF:
out32(GPIO0_OR, in32(GPIO0_OR) & ~CONFIG_SYS_LED_GREEN & ~CONFIG_SYS_LED_RED);
break;
case LED_GREEN:
out32(GPIO0_OR, (in32(GPIO0_OR) | CONFIG_SYS_LED_GREEN) & ~CONFIG_SYS_LED_RED);
break;
case LED_RED:
out32(GPIO0_OR, (in32(GPIO0_OR) | CONFIG_SYS_LED_RED) & ~CONFIG_SYS_LED_GREEN);
break;
case LED_ORANGE:
out32(GPIO0_OR, in32(GPIO0_OR) | CONFIG_SYS_LED_GREEN | CONFIG_SYS_LED_RED);
break;
}
}
static int is_monarch(void)
{
out32(GPIO0_OR, in32(GPIO0_OR) & ~CONFIG_SYS_GPIO_RDY);
udelay(1000);
if (in32(GPIO0_IR) & CONFIG_SYS_MONARCH_IO)
return 0;
else
return 1;
}
static void wait_for_pci_ready(void)
{
/*
* Configure EREADY_IO as input
*/
out32(GPIO0_TCR, in32(GPIO0_TCR) & ~CONFIG_SYS_EREADY_IO);
udelay(1000);
for (;;) {
if (in32(GPIO0_IR) & CONFIG_SYS_EREADY_IO)
return;
}
}
int board_early_init_f(void)
{
uint reg;
/*--------------------------------------------------------------------
* Setup the external bus controller/chip selects
*-------------------------------------------------------------------*/
mtdcr(EBC0_CFGADDR, EBC0_CFG);
reg = mfdcr(EBC0_CFGDATA);
mtdcr(EBC0_CFGDATA, reg | 0x04000000); /* Set ATC */
/*--------------------------------------------------------------------
* Setup pin multiplexing (GPIO/IRQ...)
*-------------------------------------------------------------------*/
mtdcr(CPC0_GPIO, 0x03F01F80);
out32(GPIO0_ODR, 0x00000000); /* no open drain pins */
out32(GPIO0_TCR, CONFIG_SYS_GPIO_RDY | CONFIG_SYS_EREADY_IO | CONFIG_SYS_LED_RED | CONFIG_SYS_LED_GREEN);
out32(GPIO0_OR, CONFIG_SYS_GPIO_RDY);
/*--------------------------------------------------------------------
* Setup the interrupt controller polarities, triggers, etc.
*-------------------------------------------------------------------*/
mtdcr(uic0sr, 0xffffffff); /* clear all */
mtdcr(uic0er, 0x00000000); /* disable all */
mtdcr(uic0cr, 0x00000001); /* UIC1 crit is critical */
mtdcr(uic0pr, 0xfffffe13); /* per ref-board manual */
mtdcr(uic0tr, 0x01c00008); /* per ref-board manual */
mtdcr(uic0vr, 0x00000001); /* int31 highest, base=0x000 */
mtdcr(uic0sr, 0xffffffff); /* clear all */
mtdcr(uic1sr, 0xffffffff); /* clear all */
mtdcr(uic1er, 0x00000000); /* disable all */
mtdcr(uic1cr, 0x00000000); /* all non-critical */
mtdcr(uic1pr, 0xffffe0ff); /* per ref-board manual */
mtdcr(uic1tr, 0x00ffc000); /* per ref-board manual */
mtdcr(uic1vr, 0x00000001); /* int31 highest, base=0x000 */
mtdcr(uic1sr, 0xffffffff); /* clear all */
return 0;
}
int checkboard(void)
{
char *s = getenv("serial#");
printf("Board: P3P440");
if (s != NULL) {
puts(", serial# ");
puts(s);
}
if (is_monarch()) {
puts(", Monarch");
} else {
puts(", None-Monarch");
}
putc('\n');
return (0);
}
int misc_init_r (void)
{
/*
* Adjust flash start and offset to detected values
*/
gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
gd->bd->bi_flashoffset = 0;
/*
* Check if only one FLASH bank is available
*/
if (gd->bd->bi_flashsize != CONFIG_SYS_MAX_FLASH_BANKS * (0 - CONFIG_SYS_FLASH0)) {
mtebc(PB1CR, 0); /* disable cs */
mtebc(PB1AP, 0);
mtebc(PB2CR, 0); /* disable cs */
mtebc(PB2AP, 0);
mtebc(PB3CR, 0); /* disable cs */
mtebc(PB3AP, 0);
}
return 0;
}
/*************************************************************************
* pci_pre_init
*
* This routine is called just prior to registering the hose and gives
* the board the opportunity to check things. Returning a value of zero
* indicates that things are bad & PCI initialization should be aborted.
*
* Different boards may wish to customize the pci controller structure
* (add regions, override default access routines, etc) or perform
* certain pre-initialization actions.
*
************************************************************************/
#if defined(CONFIG_PCI)
int pci_pre_init(struct pci_controller *hose)
{
unsigned long strap;
/*--------------------------------------------------------------------------+
* The P3P440 board is always configured as the host & requires the
* PCI arbiter to be disabled because it's an PMC module.
*--------------------------------------------------------------------------*/
strap = mfdcr(CPC0_STRP1);
if (strap & 0x00100000) {
printf("PCI: CPC0_STRP1[PAE] set.\n");
return 0;
}
return 1;
}
#endif /* defined(CONFIG_PCI) */
/*************************************************************************
* pci_target_init
*
* The bootstrap configuration provides default settings for the pci
* inbound map (PIM). But the bootstrap config choices are limited and
* may not be sufficient for a given board.
*
************************************************************************/
#if defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT)
void pci_target_init(struct pci_controller *hose)
{
/*--------------------------------------------------------------------------+
* Disable everything
*--------------------------------------------------------------------------*/
out32r(PCIX0_PIM0SA, 0); /* disable */
out32r(PCIX0_PIM1SA, 0); /* disable */
out32r(PCIX0_PIM2SA, 0); /* disable */
out32r(PCIX0_EROMBA, 0); /* disable expansion rom */
/*--------------------------------------------------------------------------+
* Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
* options to not support sizes such as 128/256 MB.
*--------------------------------------------------------------------------*/
out32r(PCIX0_PIM0LAL, CONFIG_SYS_SDRAM_BASE);
out32r(PCIX0_PIM0LAH, 0);
out32r(PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1);
out32r(PCIX0_BAR0, 0);
/*--------------------------------------------------------------------------+
* Program the board's subsystem id/vendor id
*--------------------------------------------------------------------------*/
out16r(PCIX0_SBSYSVID, CONFIG_SYS_PCI_SUBSYS_VENDORID);
out16r(PCIX0_SBSYSID, CONFIG_SYS_PCI_SUBSYS_DEVICEID);
out16r(PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY);
}
#endif /* defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT) */
/*************************************************************************
* is_pci_host
*
* This routine is called to determine if a pci scan should be
* performed. With various hardware environments (especially cPCI and
* PPMC) it's insufficient to depend on the state of the arbiter enable
* bit in the strap register, or generic host/adapter assumptions.
*
* Rather than hard-code a bad assumption in the general 440 code, the
* 440 pci code requires the board to decide at runtime.
*
* Return 0 for adapter mode, non-zero for host (monarch) mode.
*
*
************************************************************************/
#if defined(CONFIG_PCI)
int is_pci_host(struct pci_controller *hose)
{
if (is_monarch()) {
wait_for_pci_ready();
return 1; /* return 1 for host controller */
} else {
return 0; /* return 0 for adapter controller */
}
}
#endif /* defined(CONFIG_PCI) */
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