+++ /dev/null
-/*
-<: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();
-}
projects / openwrt.git / blobdiff