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openwrt-xburst/target/linux/brcm63xx-2.6/files/arch/mips/bcm963xx/setup.c
florian 147d8ef4cc Re-enable MPI/PCI code 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6897 3c298f89-4303-0410-b956-a3cf2f4a3e73
2007-04-08 17:26:45 +00:00

473 lines
16 KiB
C
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/*
<:copyright-gpl
Copyright 2002 Broadcom Corp. All Rights Reserved.
This program is free software; you can distribute it and/or modify it
under the terms of the GNU General Public License (Version 2) as
published by the Free Software Foundation.
This program is distributed in the hope 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.
:>
*/
/*
* Generic setup routines for Broadcom 963xx MIPS boards
*/
#include <linux/autoconf.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/console.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/bootmem.h>
#include <asm/addrspace.h>
#include <asm/bcache.h>
#include <asm/irq.h>
#include <asm/time.h>
#include <asm/reboot.h>
#include <asm/gdb-stub.h>
#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/mach-bcm963xx/bootloaders.h>
extern void brcm_time_init(void);
extern int boot_loader_type;
#include <linux/pci.h>
#include <linux/delay.h>
#include <bcm_map_part.h>
#include <6348_map_part.h>
#include <bcmpci.h>
static volatile MpiRegisters * mpi = (MpiRegisters *)(MPI_BASE);
/* This function should be in a board specific directory. For now,
* assume that all boards that include this file use a Broadcom chip
* with a soft reset bit in the PLL control register.
*/
static void brcm_machine_restart(char *command)
{
const unsigned long ulSoftReset = 0x00000001;
unsigned long *pulPllCtrl = (unsigned long *) 0xfffe0008;
*pulPllCtrl |= ulSoftReset;
}
static void brcm_machine_halt(void)
{
printk("System halted\n");
while (1);
}
static void mpi_SetLocalPciConfigReg(uint32 reg, uint32 value)
{
/* write index then value */
mpi->pcicfgcntrl = PCI_CFG_REG_WRITE_EN + reg;;
mpi->pcicfgdata = value;
}
static uint32 mpi_GetLocalPciConfigReg(uint32 reg)
{
/* write index then get value */
mpi->pcicfgcntrl = PCI_CFG_REG_WRITE_EN + reg;;
return mpi->pcicfgdata;
}
/*
* mpi_ResetPcCard: Set/Reset the PcCard
*/
static void mpi_ResetPcCard(int cardtype, BOOL bReset)
{
if (cardtype == MPI_CARDTYPE_NONE) {
return;
}
if (cardtype == MPI_CARDTYPE_CARDBUS) {
bReset = ! bReset;
}
if (bReset) {
mpi->pcmcia_cntl1 = (mpi->pcmcia_cntl1 & ~PCCARD_CARD_RESET);
} else {
mpi->pcmcia_cntl1 = (mpi->pcmcia_cntl1 | PCCARD_CARD_RESET);
}
}
/*
* mpi_ConfigCs: Configure an MPI/EBI chip select
*/
static void mpi_ConfigCs(uint32 cs, uint32 base, uint32 size, uint32 flags)
{
mpi->cs[cs].base = ((base & 0x1FFFFFFF) | size);
mpi->cs[cs].config = flags;
}
/*
* mpi_InitPcmciaSpace
*/
static void mpi_InitPcmciaSpace(void)
{
// ChipSelect 4 controls PCMCIA Memory accesses
mpi_ConfigCs(PCMCIA_COMMON_BASE, pcmciaMem, EBI_SIZE_1M, (EBI_WORD_WIDE|EBI_ENABLE));
// ChipSelect 5 controls PCMCIA Attribute accesses
mpi_ConfigCs(PCMCIA_ATTRIBUTE_BASE, pcmciaAttr, EBI_SIZE_1M, (EBI_WORD_WIDE|EBI_ENABLE));
// ChipSelect 6 controls PCMCIA I/O accesses
mpi_ConfigCs(PCMCIA_IO_BASE, pcmciaIo, EBI_SIZE_64K, (EBI_WORD_WIDE|EBI_ENABLE));
mpi->pcmcia_cntl2 = ((PCMCIA_ATTR_ACTIVE << RW_ACTIVE_CNT_BIT) |
(PCMCIA_ATTR_INACTIVE << INACTIVE_CNT_BIT) |
(PCMCIA_ATTR_CE_SETUP << CE_SETUP_CNT_BIT) |
(PCMCIA_ATTR_CE_HOLD << CE_HOLD_CNT_BIT));
mpi->pcmcia_cntl2 |= (PCMCIA_HALFWORD_EN | PCMCIA_BYTESWAP_DIS);
}
/*
* cardtype_vcc_detect: PC Card's card detect and voltage sense connection
*
* CD1#/ CD2#/ VS1#/ VS2#/ Card Initial Vcc
* CCD1# CCD2# CVS1 CVS2 Type
*
* GND GND open open 16-bit 5 vdc
*
* GND GND GND open 16-bit 3.3 vdc
*
* GND GND open GND 16-bit x.x vdc
*
* GND GND GND GND 16-bit 3.3 & x.x vdc
*
*====================================================================
*
* CVS1 GND CCD1# open CardBus 3.3 vdc
*
* GND CVS2 open CCD2# CardBus x.x vdc
*
* GND CVS1 CCD2# open CardBus y.y vdc
*
* GND CVS2 GND CCD2# CardBus 3.3 & x.x vdc
*
* CVS2 GND open CCD1# CardBus x.x & y.y vdc
*
* GND CVS1 CCD2# open CardBus 3.3, x.x & y.y vdc
*
*/
static int cardtype_vcc_detect(void)
{
uint32 data32;
int cardtype;
cardtype = MPI_CARDTYPE_NONE;
mpi->pcmcia_cntl1 = 0x0000A000; // Turn on the output enables and drive
// the CVS pins to 0.
data32 = mpi->pcmcia_cntl1;
switch (data32 & 0x00000003) // Test CD1# and CD2#, see if card is plugged in.
{
case 0x00000003: // No Card is in the slot.
printk("mpi: No Card is in the PCMCIA slot\n");
break;
case 0x00000002: // Partial insertion, No CD2#.
printk("mpi: Card in the PCMCIA slot partial insertion, no CD2 signal\n");
break;
case 0x00000001: // Partial insertion, No CD1#.
printk("mpi: Card in the PCMCIA slot partial insertion, no CD1 signal\n");
break;
case 0x00000000:
mpi->pcmcia_cntl1 = 0x0000A0C0; // Turn off the CVS output enables and
// float the CVS pins.
mdelay(1);
data32 = mpi->pcmcia_cntl1;
// Read the Register.
switch (data32 & 0x0000000C) // See what is on the CVS pins.
{
case 0x00000000: // CVS1 and CVS2 are tied to ground, only 1 option.
printk("mpi: Detected 3.3 & x.x 16-bit PCMCIA card\n");
cardtype = MPI_CARDTYPE_PCMCIA;
break;
case 0x00000004: // CVS1 is open or tied to CCD1/CCD2 and CVS2 is tied to ground.
// 2 valid voltage options.
switch (data32 & 0x00000003) // Test the values of CCD1 and CCD2.
{
case 0x00000003: // CCD1 and CCD2 are tied to 1 of the CVS pins.
// This is not a valid combination.
printk("mpi: Unknown card plugged into slot\n");
break;
case 0x00000002: // CCD2 is tied to either CVS1 or CVS2.
mpi->pcmcia_cntl1 = 0x0000A080; // Drive CVS1 to a 0.
mdelay(1);
data32 = mpi->pcmcia_cntl1;
if (data32 & 0x00000002) { // CCD2 is tied to CVS2, not valid.
printk("mpi: Unknown card plugged into slot\n");
} else { // CCD2 is tied to CVS1.
printk("mpi: Detected 3.3, x.x and y.y Cardbus card\n");
cardtype = MPI_CARDTYPE_CARDBUS;
}
break;
case 0x00000001: // CCD1 is tied to either CVS1 or CVS2.
// This is not a valid combination.
printk("mpi: Unknown card plugged into slot\n");
break;
case 0x00000000: // CCD1 and CCD2 are tied to ground.
printk("mpi: Detected x.x vdc 16-bit PCMCIA card\n");
cardtype = MPI_CARDTYPE_PCMCIA;
break;
}
break;
case 0x00000008: // CVS2 is open or tied to CCD1/CCD2 and CVS1 is tied to ground.
// 2 valid voltage options.
switch (data32 & 0x00000003) // Test the values of CCD1 and CCD2.
{
case 0x00000003: // CCD1 and CCD2 are tied to 1 of the CVS pins.
// This is not a valid combination.
printk("mpi: Unknown card plugged into slot\n");
break;
case 0x00000002: // CCD2 is tied to either CVS1 or CVS2.
mpi->pcmcia_cntl1 = 0x0000A040; // Drive CVS2 to a 0.
mdelay(1);
data32 = mpi->pcmcia_cntl1;
if (data32 & 0x00000002) { // CCD2 is tied to CVS1, not valid.
printk("mpi: Unknown card plugged into slot\n");
} else {// CCD2 is tied to CVS2.
printk("mpi: Detected 3.3 and x.x Cardbus card\n");
cardtype = MPI_CARDTYPE_CARDBUS;
}
break;
case 0x00000001: // CCD1 is tied to either CVS1 or CVS2.
// This is not a valid combination.
printk("mpi: Unknown card plugged into slot\n");
break;
case 0x00000000: // CCD1 and CCD2 are tied to ground.
cardtype = MPI_CARDTYPE_PCMCIA;
printk("mpi: Detected 3.3 vdc 16-bit PCMCIA card\n");
break;
}
break;
case 0x0000000C: // CVS1 and CVS2 are open or tied to CCD1/CCD2.
// 5 valid voltage options.
switch (data32 & 0x00000003) // Test the values of CCD1 and CCD2.
{
case 0x00000003: // CCD1 and CCD2 are tied to 1 of the CVS pins.
// This is not a valid combination.
printk("mpi: Unknown card plugged into slot\n");
break;
case 0x00000002: // CCD2 is tied to either CVS1 or CVS2.
// CCD1 is tied to ground.
mpi->pcmcia_cntl1 = 0x0000A040; // Drive CVS2 to a 0.
mdelay(1);
data32 = mpi->pcmcia_cntl1;
if (data32 & 0x00000002) { // CCD2 is tied to CVS1.
printk("mpi: Detected y.y vdc Cardbus card\n");
} else { // CCD2 is tied to CVS2.
printk("mpi: Detected x.x vdc Cardbus card\n");
}
cardtype = MPI_CARDTYPE_CARDBUS;
break;
case 0x00000001: // CCD1 is tied to either CVS1 or CVS2.
// CCD2 is tied to ground.
mpi->pcmcia_cntl1 = 0x0000A040; // Drive CVS2 to a 0.
mdelay(1);
data32 = mpi->pcmcia_cntl1;
if (data32 & 0x00000001) {// CCD1 is tied to CVS1.
printk("mpi: Detected 3.3 vdc Cardbus card\n");
} else { // CCD1 is tied to CVS2.
printk("mpi: Detected x.x and y.y Cardbus card\n");
}
cardtype = MPI_CARDTYPE_CARDBUS;
break;
case 0x00000000: // CCD1 and CCD2 are tied to ground.
cardtype = MPI_CARDTYPE_PCMCIA;
printk("mpi: Detected 5 vdc 16-bit PCMCIA card\n");
break;
}
break;
default:
printk("mpi: Unknown card plugged into slot\n");
break;
}
}
return cardtype;
}
/*
* mpi_DetectPcCard: Detect the plugged in PC-Card
* Return: < 0 => Unknown card detected
* 0 => No card detected
* 1 => 16-bit card detected
* 2 => 32-bit CardBus card detected
*/
static int mpi_DetectPcCard(void)
{
int cardtype;
cardtype = cardtype_vcc_detect();
switch(cardtype) {
case MPI_CARDTYPE_PCMCIA:
mpi->pcmcia_cntl1 &= ~0x0000e000; // disable enable bits
//mpi->pcmcia_cntl1 = (mpi->pcmcia_cntl1 & ~PCCARD_CARD_RESET);
mpi->pcmcia_cntl1 |= (PCMCIA_ENABLE | PCMCIA_GPIO_ENABLE);
mpi_InitPcmciaSpace();
mpi_ResetPcCard(cardtype, FALSE);
// Hold card in reset for 10ms
mdelay(10);
mpi_ResetPcCard(cardtype, TRUE);
// Let card come out of reset
mdelay(100);
break;
case MPI_CARDTYPE_CARDBUS:
// 8 => CardBus Enable
// 1 => PCI Slot Number
// C => Float VS1 & VS2
mpi->pcmcia_cntl1 = (mpi->pcmcia_cntl1 & 0xFFFF0000) |
CARDBUS_ENABLE |
(CARDBUS_SLOT << 8)|
VS2_OEN |
VS1_OEN;
/* access to this memory window will be to/from CardBus */
mpi->l2pmremap1 |= CARDBUS_MEM;
// Need to reset the Cardbus Card. There's no CardManager to do this,
// and we need to be ready for PCI configuration.
mpi_ResetPcCard(cardtype, FALSE);
// Hold card in reset for 10ms
mdelay(10);
mpi_ResetPcCard(cardtype, TRUE);
// Let card come out of reset
mdelay(100);
break;
default:
break;
}
return cardtype;
}
static int mpi_init(void)
{
unsigned long data;
unsigned int chipid, chiprev, sdramsize;
printk("Broadcom BCM963xx MPI\n");
chipid = (PERF->RevID & 0xFFFF0000) >> 16;
chiprev = (PERF->RevID & 0xFF);
if (boot_loader_type == BOOT_LOADER_CFE)
sdramsize = boot_mem_map.map[0].size;
else
sdramsize = 0x01000000;
/*
* Init the pci interface
*/
data = GPIO->GPIOMode; // GPIO mode register
data |= GROUP2_PCI | GROUP1_MII_PCCARD; // PCI internal arbiter + Cardbus
GPIO->GPIOMode = data; // PCI internal arbiter
/*
* In the BCM6348 CardBus support is defaulted to Slot 0
* because there is no external IDSEL for CardBus. To disable
* the CardBus and allow a standard PCI card in Slot 0
* set the cbus_idsel field to 0x1f.
*/
/*
uData = mpi->pcmcia_cntl1;
uData |= CARDBUS_IDSEL;
mpi->pcmcia_cntl1 = uData;
*/
// Setup PCI I/O Window range. Give 64K to PCI I/O
mpi->l2piorange = ~(BCM_PCI_IO_SIZE_64KB-1);
// UBUS to PCI I/O base address
mpi->l2piobase = BCM_PCI_IO_BASE & BCM_PCI_ADDR_MASK;
// UBUS to PCI I/O Window remap
mpi->l2pioremap = (BCM_PCI_IO_BASE | MEM_WINDOW_EN);
// enable PCI related GPIO pins and data swap between system and PCI bus
mpi->locbuscntrl = (EN_PCI_GPIO | DIR_U2P_NOSWAP);
/* Enable 6348 BusMaster and Memory access mode */
data = mpi_GetLocalPciConfigReg(PCI_COMMAND);
data |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
mpi_SetLocalPciConfigReg(PCI_COMMAND, data);
/* Configure two 16 MByte PCI to System memory regions. */
/* These memory regions are used when PCI device is a bus master */
/* Accesses to the SDRAM from PCI bus will be "byte swapped" for this region */
mpi_SetLocalPciConfigReg(PCI_BASE_ADDRESS_3, BCM_HOST_MEM_SPACE1);
mpi->sp0remap = 0x0;
/* Accesses to the SDRAM from PCI bus will not be "byte swapped" for this region */
mpi_SetLocalPciConfigReg(PCI_BASE_ADDRESS_4, BCM_HOST_MEM_SPACE2);
mpi->sp1remap = 0x0;
mpi->pcimodesel |= (PCI_BAR2_NOSWAP | 0x40);
if ((chipid == 0x6348) && (chiprev == 0xb0)) {
mpi->sp0range = ~(sdramsize-1);
mpi->sp1range = ~(sdramsize-1);
}
/*
* Change 6348 PCI Cfg Reg. offset 0x40 to PCI memory read retry count infinity
* by set 0 in bit 8~15. This resolve read Bcm4306 srom return 0xffff in
* first read.
*/
data = mpi_GetLocalPciConfigReg(BRCM_PCI_CONFIG_TIMER);
data &= ~BRCM_PCI_CONFIG_TIMER_RETRY_MASK;
data |= 0x00000080;
mpi_SetLocalPciConfigReg(BRCM_PCI_CONFIG_TIMER, data);
/* enable pci interrupt */
mpi->locintstat |= (EXT_PCI_INT << 16);
mpi_DetectPcCard();
ioport_resource.start = BCM_PCI_IO_BASE;
ioport_resource.end = BCM_PCI_IO_BASE + BCM_PCI_IO_SIZE_64KB;
#if defined(CONFIG_USB)
PERF->blkEnables |= USBH_CLK_EN;
mdelay(100);
*USBH_NON_OHCI = NON_OHCI_BYTE_SWAP;
#endif
return 0;
}
void __init plat_mem_setup(void)
{
_machine_restart = brcm_machine_restart;
_machine_halt = brcm_machine_halt;
pm_power_off = brcm_machine_halt;
board_time_init = brcm_time_init;
/* mpi initialization */
mpi_init();
}
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