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
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u-boot/board/mpl/common/pci.c

110 lines
3.3 KiB

22 years ago
/*-----------------------------------------------------------------------------+
| This source code is dual-licensed. You may use it under the terms of
| the GNU General Public License version 2, or under the license below.
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|
| This source code has been made available to you by IBM on an AS-IS
| basis. Anyone receiving this source is licensed under IBM
| copyrights to use it in any way he or she deems fit, including
| copying it, modifying it, compiling it, and redistributing it either
| with or without modifications. No license under IBM patents or
| patent applications is to be implied by the copyright license.
|
| Any user of this software should understand that IBM cannot provide
| technical support for this software and will not be responsible for
| any consequences resulting from the use of this software.
|
| Any person who transfers this source code or any derivative work
| must include the IBM copyright notice, this paragraph, and the
| preceding two paragraphs in the transferred software.
|
| COPYRIGHT I B M CORPORATION 1995
| LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
+-----------------------------------------------------------------------------*/
/*
* Adapted for PIP405 03.07.01
* Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
*
* TODO: Clean-up
*/
#include <common.h>
#include <pci.h>
#include "isa.h"
#ifdef CONFIG_405GP
#ifdef CONFIG_PCI
DECLARE_GLOBAL_DATA_PTR;
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#include "piix4_pci.h"
#include "pci_parts.h"
void pci_pip405_write_regs(struct pci_controller *hose, pci_dev_t dev,
struct pci_config_table *entry)
{
struct pci_pip405_config_entry *table;
int i;
table = (struct pci_pip405_config_entry*) entry->priv[0];
for (i=0; table[i].width; i++)
{
#ifdef DEBUG
printf("Reg 0x%02X Value 0x%08lX Width %02d written\n",
table[i].index, table[i].val, table[i].width);
#endif
switch(table[i].width)
{
case 1: pci_hose_write_config_byte(hose, dev, table[i].index, table[i].val); break;
case 2: pci_hose_write_config_word(hose, dev, table[i].index, table[i].val); break;
case 4: pci_hose_write_config_dword(hose, dev, table[i].index, table[i].val); break;
}
}
}
static void pci_pip405_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
{
unsigned char int_line = 0xff;
unsigned char pin;
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/*
* Write pci interrupt line register
*/
if(PCI_DEV(dev)==0) /* Device0 = PPC405 -> skip */
return;
pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &pin);
if ((pin == 0) || (pin > 4))
return;
int_line = ((PCI_DEV(dev) + (pin-1) + 10) % 4) + 28;
pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
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#ifdef DEBUG
printf("Fixup IRQ: dev %d (%x) int line %d 0x%x\n",
PCI_DEV(dev),dev,int_line,int_line);
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#endif
}
extern void pci_405gp_init(struct pci_controller *hose);
static struct pci_controller hose = {
config_table: pci_pip405_config_table,
fixup_irq: pci_pip405_fixup_irq,
};
void pci_init_board(void)
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{
/*we want the ptrs to RAM not flash (ie don't use init list)*/
hose.fixup_irq = pci_pip405_fixup_irq;
hose.config_table = pci_pip405_config_table;
#ifdef DEBUG
printf("Init PCI: fixup_irq=%p config_table=%p hose=%p\n",pci_pip405_fixup_irq,pci_pip405_config_table,hose);
#endif
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pci_405gp_init(&hose);
}
#endif /* CONFIG_PCI */
#endif /* CONFIG_405GP */