From b6e4c4033c4f889c452c511d38c77808c67f9cf7 Mon Sep 17 00:00:00 2001 From: wdenk Date: Fri, 2 Jan 2004 16:05:07 +0000 Subject: * Patch by Denis Peter, 8 Dec 2003 - add support for the PATI board (MPC555) - add SPI support for the MPC5xx * Patch by Anders Larsen, 08 Dec 2003: add configuration options CONFIG_SERIAL_TAG and CONFIG_REVISION_TAG to pass ATAG_SERIAL and ATAG_REVISION, resp., to the ARM target; cleanup some redundand #defines --- board/mpl/pati/pati.c | 618 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 618 insertions(+) create mode 100644 board/mpl/pati/pati.c (limited to 'board/mpl/pati/pati.c') diff --git a/board/mpl/pati/pati.c b/board/mpl/pati/pati.c new file mode 100644 index 0000000..0355b65 --- /dev/null +++ b/board/mpl/pati/pati.c @@ -0,0 +1,618 @@ +/* + * (C) Copyright 2003 + * Martin Winistoerfer, martinwinistoerfer@gmx.ch. + * Atapted for PATI + * Denis Peter, d.peter@mpl.ch + * 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 + */ + +/*********************************************************************************** + * Bits for the SDRAM controller + * ----------------------------- + * + * CAL: CAS Latency. If cleared to 0 (default) the SDRAM controller asserts TA# on + * the 2nd Clock after ACTIVE command (CAS Latency = 2). If set to 1 the SDRAM + * controller asserts TA# on the 3rd Clock after ACTIVE command (CAS Latency = 3). + * RCD: RCD ACTIVE to READ or WRITE Delay (Ras to Cas Delay). If cleared 0 (default) + * tRCD of the SDRAM must equal or less 25ns. If set to 1 tRCD must be equal or less 50ns. + * WREC:Write Recovery. If cleared 0 (default) tWR of the SDRAM must equal or less 25ns. + * If set to 1 tWR must be equal or less 50ns. + * RP: Precharge Command Time. If cleared 0 (default) tRP of the SDRAM must equal or less + * 25ns. If set to 1 tRP must be equal or less 50ns. + * RC: Auto Refresh to Active Time. If cleared 0 (default) tRC of the SDRAM must equal + * or less 75ns. If set to 1 tRC must be equal or less 100ns. + * LMR: Bit to set the Mode Register of the SDRAM. If set, the next access to the SDRAM + * is the Load Mode Register Command. + * IIP: Init in progress. Set to 1 for starting the init sequence + * (Precharge All). As long this bit is set, the Precharge All is still in progress. + * After command has completed, wait at least for 8 refresh (200usec) before proceed. + **********************************************************************************/ + +#include +#include +#include +#include +#define PLX9056_LOC +#include "plx9056.h" +#include "pati.h" + +#if defined(__APPLE__) +/* Leading underscore on symbols */ +# define SYM_CHAR "_" +#else /* No leading character on symbols */ +# define SYM_CHAR +#endif + +#undef SDRAM_DEBUG +/* + * Macros to generate global absolutes. + */ +#define GEN_SYMNAME(str) SYM_CHAR #str +#define GEN_VALUE(str) #str +#define GEN_ABS(name, value) \ + asm (".globl " GEN_SYMNAME(name)); \ + asm (GEN_SYMNAME(name) " = " GEN_VALUE(value)) + + +/************************************************************************ + * Early debug routines + */ +void write_hex (unsigned char i) +{ + char cc; + + cc = i >> 4; + cc &= 0xf; + if (cc > 9) + serial_putc (cc + 55); + else + serial_putc (cc + 48); + cc = i & 0xf; + if (cc > 9) + serial_putc (cc + 55); + else + serial_putc (cc + 48); +} + +#if defined(SDRAM_DEBUG) + +void write_4hex (unsigned long val) +{ + write_hex ((unsigned char) (val >> 24)); + write_hex ((unsigned char) (val >> 16)); + write_hex ((unsigned char) (val >> 8)); + write_hex ((unsigned char) val); +} + +#endif + +unsigned long in32(unsigned long addr) +{ + unsigned long *p=(unsigned long *)addr; + return *p; +} + +void out32(unsigned long addr,unsigned long data) +{ + unsigned long *p=(unsigned long *)addr; + *p=data; +} + +typedef struct { + unsigned short boardtype; /* Board revision and Population Options */ + unsigned char cal; /* cas Latency 0:CAL=2 1:CAL=3 */ + unsigned char rcd; /* ras to cas delay 0:<25ns 1:<50ns*/ + unsigned char wrec; /* write recovery 0:<25ns 1:<50ns */ + unsigned char pr; /* Precharge Command Time 0:<25ns 1:<50ns */ + unsigned char rc; /* Auto Refresh to Active Time 0:<75ns 1:<100ns */ + unsigned char sz; /* log binary => Size = (4MByte< Size 2 = 16MByte, 1=8 */ + }, + { 0xffff, /* terminator */ + 0xff, + 0xff, + 0xff, + 0xff, + 0xff, + 0xff } +}; + + +extern int mem_test (unsigned long start, unsigned long ramsize, int quiet); +extern void mem_test_reloc(void); + +/* + * Get RAM size. + */ +long int initdram(int board_type) +{ + unsigned char board_rev; + unsigned long reg; + unsigned long lmr; + int i,timeout; + +#if defined(SDRAM_DEBUG) + reg=in32(PLD_CONFIG_BASE+PLD_PART_ID); + puts("\n\nSYSTEM part 0x"); write_4hex(SYSCNTR_PART(reg)); + puts(" Vers 0x"); write_4hex(SYSCNTR_ID(reg)); + puts("\nSDRAM part 0x"); write_4hex(SDRAM_PART(reg)); + puts(" Vers 0x"); write_4hex(SDRAM_ID(reg)); + reg=in32(PLD_CONFIG_BASE+PLD_BOARD_TIMING); + puts("\nBoard rev. 0x"); write_4hex(SYSCNTR_BREV(reg)); + putc('\n'); +#endif + reg=in32(PLD_CONFIG_BASE+PLD_BOARD_TIMING); + board_rev=(unsigned char)(SYSCNTR_BREV(reg)); + i=0; + while(1) { + if(sdram_table[i].boardtype==0xffff) { + puts("ERROR, found no table for Board 0x"); + write_hex(board_rev); + while(1); + } + if(sdram_table[i].boardtype==(unsigned char)board_rev) + break; + i++; + } + /* Set CAL, RCD, WREQ, PR and RC Bits */ +#if defined(SDRAM_DEBUG) + puts("Set CAL, RCD, WREQ, PR and RC Bits\n"); +#endif + /* mask bits */ + reg &= ~(SET_REG_BIT(1,SDRAM_CAL) | SET_REG_BIT(1,SDRAM_RCD) | SET_REG_BIT(1,SDRAM_WREQ) | + SET_REG_BIT(1,SDRAM_PR) | SET_REG_BIT(1,SDRAM_RC) | SET_REG_BIT(1,SDRAM_LMR) | + SET_REG_BIT(1,SDRAM_IIP) | SET_REG_BIT(1,SDRAM_RES0)); + /* set bits */ + reg |= (SET_REG_BIT(sdram_table[i].cal,SDRAM_CAL) | + SET_REG_BIT(sdram_table[i].rcd,SDRAM_RCD) | + SET_REG_BIT(sdram_table[i].wrec,SDRAM_WREQ) | + SET_REG_BIT(sdram_table[i].pr,SDRAM_PR) | + SET_REG_BIT(sdram_table[i].rc,SDRAM_RC)); + + out32(PLD_CONFIG_BASE+PLD_BOARD_TIMING,reg); + /* step 2 set IIP */ +#if defined(SDRAM_DEBUG) + puts("step 2 set IIP\n"); +#endif + /* step 2 set IIP */ + reg |= SET_REG_BIT(1,SDRAM_IIP); + timeout=0; + while (timeout!=0xffff) { + __asm__ volatile("eieio"); + reg=in32(PLD_CONFIG_BASE+PLD_BOARD_TIMING); + if((reg & SET_REG_BIT(1,SDRAM_IIP))==0) + break; + timeout++; + udelay(1); + } + /* wait for at least 8 refresh */ + udelay(1000); + /* set LMR */ + reg |= SET_REG_BIT(1,SDRAM_LMR); + out32(PLD_CONFIG_BASE+PLD_BOARD_TIMING,reg); + __asm__ volatile("eieio"); + lmr=0x00000002; /* sequential burst 4 data */ + if(sdram_table[i].cal==1) + lmr|=0x00000030; /* cal = 3 */ + else + lmr|=0000000020; /* cal = 2 */ + /* rest standard operation programmed write burst length */ + /* we have a x32 bit bus to the SDRAM, so shift the addr with 2 */ + lmr<<=2; + in32(CFG_SDRAM_BASE + lmr); + /* ok, we're done, return SDRAM size */ + return ((0x400000 << sdram_table[i].sz)); /* log2 value of 4MByte */ +} + + +void set_flash_vpp(int ext_vpp, int ext_wp, int int_vpp) +{ + unsigned long reg; + reg=in32(PLD_CONF_REG2+PLD_CONFIG_BASE); + reg &= ~(SET_REG_BIT(1,SYSCNTR_CPU_VPP) | + SET_REG_BIT(1,SYSCNTR_FL_VPP) | + SET_REG_BIT(1,SYSCNTR_FL_WP)); + + reg |= (SET_REG_BIT(int_vpp,SYSCNTR_CPU_VPP) | + SET_REG_BIT(ext_vpp,SYSCNTR_FL_VPP) | + SET_REG_BIT(ext_wp,SYSCNTR_FL_WP)); + out32(PLD_CONF_REG2+PLD_CONFIG_BASE,reg); + udelay(100); +} + + +void show_pld_regs(void) +{ + unsigned long reg,reg1; + reg=in32(PLD_CONFIG_BASE+PLD_PART_ID); + printf("\nSYSTEM part %ld, Vers %ld\n",SYSCNTR_PART(reg),SYSCNTR_ID(reg)); + printf("SDRAM part %ld, Vers %ld\n",SDRAM_PART(reg),SDRAM_ID(reg)); + reg=in32(PLD_CONFIG_BASE+PLD_BOARD_TIMING); + printf("Board rev. %c\n",(char) (SYSCNTR_BREV(reg)+'A')); + printf("Waitstates %ld\n",GET_SYSCNTR_FLWAIT(reg)); + printf("SDRAM: CAL=%ld RCD=%ld WREQ=%ld PR=%ld\n RC=%ld LMR=%ld IIP=%ld\n", + GET_REG_BIT(reg,SDRAM_CAL),GET_REG_BIT(reg,SDRAM_RCD), + GET_REG_BIT(reg,SDRAM_WREQ),GET_REG_BIT(reg,SDRAM_PR), + GET_REG_BIT(reg,SDRAM_RC),GET_REG_BIT(reg,SDRAM_LMR), + GET_REG_BIT(reg,SDRAM_IIP)); + reg=in32(PLD_CONFIG_BASE+PLD_CONF_REG1); + reg1=in32(PLD_CONFIG_BASE+PLD_CONF_REG2); + printf("HW Config: FLAG=%ld IP=%ld index=%ld PRPM=%ld\n ICW=%ld ISB=%ld BDIS=%ld PCIM=%ld\n", + GET_REG_BIT(reg,SYSCNTR_FLAG),GET_REG_BIT(reg,SYSCNTR_IP), + GET_SYSCNTR_BOOTIND(reg),GET_REG_BIT(reg,SYSCNTR_PRM), + GET_REG_BIT(reg,SYSCNTR_ICW),GET_SYSCNTR_ISB(reg), + GET_REG_BIT(reg1,SYSCNTR_BDIS),GET_REG_BIT(reg1,SYSCNTR_PCIM)); + printf("Switches: MUX=%ld PCI_DIS=%ld Boot_EN=%ld Config=%ld\n",GET_SDRAM_MUX(reg), + GET_REG_BIT(reg,SDRAM_PDIS),GET_REG_BIT(reg1,SYSCNTR_BOOTEN), + GET_SYSCNTR_CFG(reg1)); + printf("Misc: RIP=%ld CPU_VPP=%ld FLSH_VPP=%ld FLSH_WP=%ld\n\n", + GET_REG_BIT(reg,SDRAM_RIP),GET_REG_BIT(reg1,SYSCNTR_CPU_VPP), + GET_REG_BIT(reg1,SYSCNTR_FL_VPP),GET_REG_BIT(reg1,SYSCNTR_FL_WP)); +} + + +/**************************************************************** + * Setting IOs + * ----------- + * GPIO6 is User LED1 + * GPIO7 is Interrupt PLX (Output) + * GPIO5 is User LED0 + * GPIO2 is PLX USERi (Output) + * GPIO1 is PLX Interrupt (Input) + ****************************************************************/ + void init_ios(void) + { + volatile immap_t * immr = (immap_t *) CFG_IMMR; + volatile sysconf5xx_t *sysconf = &immr->im_siu_conf; + unsigned long reg; + reg=sysconf->sc_sgpiocr; /* Data direction register */ + reg &= ~0x67000000; + reg |= 0x27000000; /* set outpupts */ + sysconf->sc_sgpiocr=reg; /* Data direction register */ + reg=sysconf->sc_sgpiodt2; /* Data register */ + /* set output to 0 */ + reg &= ~0x27000000; + /* set IRQ and USERi to 1 */ + reg |= 0x28000000; + sysconf->sc_sgpiodt2=reg; /* Data register */ +} + +void user_led0(int led_on) +{ + volatile immap_t * immr = (immap_t *) CFG_IMMR; + volatile sysconf5xx_t *sysconf = &immr->im_siu_conf; + unsigned long reg; + reg=sysconf->sc_sgpiodt2; /* Data register */ + if(led_on) /* set output to 1 */ + reg |= 0x04000000; + else + reg &= ~0x04000000; + sysconf->sc_sgpiodt2=reg; /* Data register */ +} + +void user_led1(int led_on) +{ + volatile immap_t * immr = (immap_t *) CFG_IMMR; + volatile sysconf5xx_t *sysconf = &immr->im_siu_conf; + unsigned long reg; + reg=sysconf->sc_sgpiodt2; /* Data register */ + if(led_on) /* set output to 1 */ + reg |= 0x02000000; + else + reg &= ~0x02000000; + sysconf->sc_sgpiodt2=reg; /* Data register */ +} + + +/**************************************************************** + * Last Stage Init + ****************************************************************/ +int last_stage_init (void) +{ + mem_test_reloc(); + init_ios(); + return 0; +} + +/**************************************************************** + * Check the board + ****************************************************************/ + +#define BOARD_NAME "PATI" + +int checkboard (void) +{ + unsigned char s[50]; + unsigned long reg; + char rev; + int i; + + puts ("\nBoard: "); + reg=in32(PLD_CONFIG_BASE+PLD_BOARD_TIMING); + rev=(char)(SYSCNTR_BREV(reg)+'A'); + i = getenv_r ("serial#", s, 32); + if ((i == -1)) { + puts ("### No HW ID - assuming " BOARD_NAME); + printf(" Rev. %c\n",rev); + } + else { + s[sizeof(BOARD_NAME)-1] = 0; + printf ("%s-1 Rev %c SN: %s\n", s,rev, + &s[sizeof(BOARD_NAME)]); + } + set_flash_vpp(1,0,0); /* set Flash VPP */ + return 0; +} + + +#ifdef CFG_PCI_CON_DEVICE +/************************************************************************ + * PCI Communication + * + * Alive (Pinging): + * ---------------- + * PCI Host sends message ALIVE, Local acknowledges with ALIVE + * + * PCI_CON console over PCI: + * ------------------------- + * Local side: + * - uses PCI9056_LOC_TO_PCI_DBELL register to signal that + * data is avaible (PCIMSG_CONN) + * - uses PCI9056_MAILBOX1 to send data + * - uses PCI9056_MAILBOX0 to receive data + * PCI side: + * - uses PCI9056_PCI_TO_LOC_DBELL register to signal that + * data is avaible (PCIMSG_CONN) + * - uses PCI9056_MAILBOX0 to send data + * - uses PCI9056_MAILBOX1 to receive data + * + * How it works: + * Send: + * - check if PCICON_TRANSMIT_REG is empty + * - write data or'ed with 0x80000000 into the PCICON_TRANSMIT_REG + * - write PCIMSG_CONN into the PCICON_DBELL_REG to signal a data + * is waiting + * Receive: + * - get an interrupt via the PCICON_ACK_REG register message + * PCIMSG_CONN + * - write the data from the PCICON_RECEIVE_REG into the receive + * buffer and if the receive buffer is not full, clear the + * PCICON_RECEIVE_REG (this allows the counterpart to write more data) + * - Clear the interrupt by writing 0xFFFFFFFF to the PCICON_ACK_REG + * + * The PCICON_RECEIVE_REG must be cleared by the routine which reads + * the receive buffer if the buffer is not full any more + * + */ + +#undef PCI_CON_DEBUG + +#ifdef PCI_CON_DEBUG +#define PCI_CON_PRINTF(fmt,args...) serial_printf (fmt ,##args) +#else +#define PCI_CON_PRINTF(fmt,args...) +#endif + + +/********************************************************* + * we work only with a receive buffer on eiter side. + * Transmit buffer is free, if mailbox is cleared. + * Transmit character is or'ed with 0x80000000 + * PATI receive register MAILBOX0 + * PATI transmit register MAILBOX1 + *********************************************************/ +#define PCICON_RECEIVE_REG PCI9056_MAILBOX0 +#define PCICON_TRANSMIT_REG PCI9056_MAILBOX1 +#define PCICON_DBELL_REG PCI9056_LOC_TO_PCI_DBELL +#define PCICON_ACK_REG PCI9056_PCI_TO_LOC_DBELL + + +#define PCIMSG_ALIVE 0x1 +#define PCIMSG_CONN 0x2 +#define PCIMSG_DISC 0x3 +#define PCIMSG_CON_DATA 0x5 + + +#define PCICON_GET_REG(x) (in32(x + PCI_CONFIG_BASE)) +#define PCICON_SET_REG(x,y) (out32(x + PCI_CONFIG_BASE,y)) +#define PCICON_TX_FLAG 0x80000000 + + +#define REC_BUFFER_SIZE 0x100 +int recbuf[REC_BUFFER_SIZE]; +static int r_ptr = 0; +int w_ptr; +device_t pci_con_dev; +int conn=0; +int buff_full=0; + +void pci_con_put_it(const char c) +{ + /* Test for completition */ + unsigned long reg; + do { + reg=PCICON_GET_REG(PCICON_TRANSMIT_REG); + }while(reg); + reg=PCICON_TX_FLAG + c; + PCICON_SET_REG(PCICON_TRANSMIT_REG,reg); + PCICON_SET_REG(PCICON_DBELL_REG,PCIMSG_CON_DATA); +} + +void pci_con_putc(const char c) +{ + pci_con_put_it(c); + if(c == '\n') + pci_con_put_it('\r'); +} + + +int pci_con_getc(void) +{ + int res; + int diff; + while(r_ptr==(volatile int)w_ptr); + res=recbuf[r_ptr++]; + if(r_ptr==REC_BUFFER_SIZE) + r_ptr=0; + if(w_ptr(REC_BUFFER_SIZE-4)) + buff_full=1; + else + /* clear Mail box */ + PCICON_SET_REG(PCICON_RECEIVE_REG,0L); + break; + default: + serial_printf(" PCI9056_PCI_TO_LOC_DBELL = %08lX\n",reg); + } + /* clear IRQ */ + PCICON_SET_REG(PCICON_ACK_REG,~0L); + } + return 0; +} + +void pci_con_connect(void) +{ + unsigned long reg; + conn=0; + reg=PCICON_GET_REG(PCI9056_INT_CTRL_STAT); + /* default 0x0f010180 */ + reg &= 0xff000000; + reg |= 0x00030000; /* enable local dorbell */ + reg |= 0x00000300; /* enable PCI dorbell */ + PCICON_SET_REG(PCI9056_INT_CTRL_STAT , reg); + irq_install_handler (0x2, (interrupt_handler_t *) pci_dorbell_irq,NULL); + memset (&pci_con_dev, 0, sizeof (pci_con_dev)); + strcpy (pci_con_dev.name, "pci_con"); + pci_con_dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; + pci_con_dev.putc = pci_con_putc; + pci_con_dev.puts = pci_con_puts; + pci_con_dev.getc = pci_con_getc; + pci_con_dev.tstc = pci_con_tstc; + device_register (&pci_con_dev); + printf("PATI ready for PCI connection, type ctrl-c for exit\n"); + do { + udelay(10); + if((volatile int)conn) + break; + if(ctrlc()) { + irq_free_handler(0x2); + return; + } + }while(1); + console_assign(stdin,"pci_con"); + console_assign(stderr,"pci_con"); + console_assign(stdout,"pci_con"); +} + +void pci_con_disc(void) +{ + console_assign(stdin,"serial"); + console_assign(stderr,"serial"); + console_assign(stdout,"serial"); + PCICON_SET_REG(PCICON_DBELL_REG,PCIMSG_DISC); + /* reconnection */ + irq_free_handler(0x02); + pci_con_connect(); +} +#endif /* #ifdef CFG_PCI_CON_DEVICE */ + +/* + * Absolute environment address for linker file. + */ +GEN_ABS(env_start, CFG_ENV_OFFSET + CFG_FLASH_BASE); -- cgit v1.1